Merge remote-tracking branch 'upstream-public/pr/1578' into development-proposed
This commit is contained in:
commit
1afdec1812
2 changed files with 375 additions and 298 deletions
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@ -1,10 +1,21 @@
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/**
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/**
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* \file ecp.h
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* \file ecp.h
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*
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*
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* \brief Elliptic curves over GF(p)
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* \brief This file provides an API for Elliptic Curves over GF(P) (ECP).
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||||||
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*
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||||||
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* The use of ECP in cryptography and TLS is defined in
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* <em>Standards for Efficient Cryptography Group (SECG): SEC1
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* Elliptic Curve Cryptography</em> and
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||||||
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* <em>RFC-4492: Elliptic Curve Cryptography (ECC) Cipher Suites
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* for Transport Layer Security (TLS)</em>.
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*
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||||||
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* <em>RFC-2409: The Internet Key Exchange (IKE)</em> defines ECP
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* group types.
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*
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*/
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*/
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/*
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/*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
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||||||
* SPDX-License-Identifier: Apache-2.0
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* SPDX-License-Identifier: Apache-2.0
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||||||
*
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*
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||||||
* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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@ -19,8 +30,9 @@
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* See the License for the specific language governing permissions and
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* See the License for the specific language governing permissions and
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||||||
* limitations under the License.
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* limitations under the License.
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||||||
*
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*
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||||||
* This file is part of mbed TLS (https://tls.mbed.org)
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* This file is part of Mbed TLS (https://tls.mbed.org)
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*/
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*/
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#ifndef MBEDTLS_ECP_H
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#ifndef MBEDTLS_ECP_H
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#define MBEDTLS_ECP_H
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#define MBEDTLS_ECP_H
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@ -31,13 +43,13 @@
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*/
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*/
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#define MBEDTLS_ERR_ECP_BAD_INPUT_DATA -0x4F80 /**< Bad input parameters to function. */
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#define MBEDTLS_ERR_ECP_BAD_INPUT_DATA -0x4F80 /**< Bad input parameters to function. */
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#define MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL -0x4F00 /**< The buffer is too small to write to. */
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#define MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL -0x4F00 /**< The buffer is too small to write to. */
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#define MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE -0x4E80 /**< Requested curve not available. */
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#define MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE -0x4E80 /**< The requested feature is not available, for example, the requested curve is not supported. */
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#define MBEDTLS_ERR_ECP_VERIFY_FAILED -0x4E00 /**< The signature is not valid. */
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#define MBEDTLS_ERR_ECP_VERIFY_FAILED -0x4E00 /**< The signature is not valid. */
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#define MBEDTLS_ERR_ECP_ALLOC_FAILED -0x4D80 /**< Memory allocation failed. */
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#define MBEDTLS_ERR_ECP_ALLOC_FAILED -0x4D80 /**< Memory allocation failed. */
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#define MBEDTLS_ERR_ECP_RANDOM_FAILED -0x4D00 /**< Generation of random value, such as (ephemeral) key, failed. */
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#define MBEDTLS_ERR_ECP_RANDOM_FAILED -0x4D00 /**< Generation of random value, such as ephemeral key, failed. */
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#define MBEDTLS_ERR_ECP_INVALID_KEY -0x4C80 /**< Invalid private or public key. */
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#define MBEDTLS_ERR_ECP_INVALID_KEY -0x4C80 /**< Invalid private or public key. */
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#define MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH -0x4C00 /**< The buffer contains a valid signature followed by more data. */
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#define MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH -0x4C00 /**< The buffer contains a valid signature followed by more data. */
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#define MBEDTLS_ERR_ECP_HW_ACCEL_FAILED -0x4B80 /**< ECP hardware accelerator failed. */
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#define MBEDTLS_ERR_ECP_HW_ACCEL_FAILED -0x4B80 /**< The ECP hardware accelerator failed. */
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#if !defined(MBEDTLS_ECP_ALT)
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#if !defined(MBEDTLS_ECP_ALT)
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/*
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/*
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@ -53,123 +65,135 @@ extern "C" {
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#endif
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#endif
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||||||
/**
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/**
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||||||
* Domain parameters (curve, subgroup and generator) identifiers.
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* Domain-parameter identifiers: curve, subgroup, and generator.
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*
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*
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* Only curves over prime fields are supported.
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* \note Only curves over prime fields are supported.
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||||||
*
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*
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||||||
* \warning This library does not support validation of arbitrary domain
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* \warning This library does not support validation of arbitrary domain
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||||||
* parameters. Therefore, only well-known domain parameters from trusted
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* parameters. Therefore, only standardized domain parameters from trusted
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* sources should be used. See mbedtls_ecp_group_load().
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* sources should be used. See mbedtls_ecp_group_load().
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||||||
*/
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*/
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typedef enum
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typedef enum
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||||||
{
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{
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MBEDTLS_ECP_DP_NONE = 0,
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MBEDTLS_ECP_DP_NONE = 0, /*!< Curve not defined. */
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MBEDTLS_ECP_DP_SECP192R1, /*!< 192-bits NIST curve */
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MBEDTLS_ECP_DP_SECP192R1, /*!< Domain parameters for the 192-bit curve defined by FIPS 186-4 and SEC1. */
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MBEDTLS_ECP_DP_SECP224R1, /*!< 224-bits NIST curve */
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MBEDTLS_ECP_DP_SECP224R1, /*!< Domain parameters for the 224-bit curve defined by FIPS 186-4 and SEC1. */
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MBEDTLS_ECP_DP_SECP256R1, /*!< 256-bits NIST curve */
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MBEDTLS_ECP_DP_SECP256R1, /*!< Domain parameters for the 256-bit curve defined by FIPS 186-4 and SEC1. */
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MBEDTLS_ECP_DP_SECP384R1, /*!< 384-bits NIST curve */
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MBEDTLS_ECP_DP_SECP384R1, /*!< Domain parameters for the 384-bit curve defined by FIPS 186-4 and SEC1. */
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||||||
MBEDTLS_ECP_DP_SECP521R1, /*!< 521-bits NIST curve */
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MBEDTLS_ECP_DP_SECP521R1, /*!< Domain parameters for the 521-bit curve defined by FIPS 186-4 and SEC1. */
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MBEDTLS_ECP_DP_BP256R1, /*!< 256-bits Brainpool curve */
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MBEDTLS_ECP_DP_BP256R1, /*!< Domain parameters for 256-bit Brainpool curve. */
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MBEDTLS_ECP_DP_BP384R1, /*!< 384-bits Brainpool curve */
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MBEDTLS_ECP_DP_BP384R1, /*!< Domain parameters for 384-bit Brainpool curve. */
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MBEDTLS_ECP_DP_BP512R1, /*!< 512-bits Brainpool curve */
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MBEDTLS_ECP_DP_BP512R1, /*!< Domain parameters for 512-bit Brainpool curve. */
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MBEDTLS_ECP_DP_CURVE25519, /*!< Curve25519 */
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MBEDTLS_ECP_DP_CURVE25519, /*!< Domain parameters for Curve25519. */
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MBEDTLS_ECP_DP_CURVE448, /*!< Curve448 */
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MBEDTLS_ECP_DP_CURVE448, /*!< Domain parameters for Curve448. */
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MBEDTLS_ECP_DP_SECP192K1, /*!< 192-bits "Koblitz" curve */
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MBEDTLS_ECP_DP_SECP192K1, /*!< Domain parameters for 192-bit "Koblitz" curve. */
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MBEDTLS_ECP_DP_SECP224K1, /*!< 224-bits "Koblitz" curve */
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MBEDTLS_ECP_DP_SECP224K1, /*!< Domain parameters for 224-bit "Koblitz" curve. */
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MBEDTLS_ECP_DP_SECP256K1, /*!< 256-bits "Koblitz" curve */
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MBEDTLS_ECP_DP_SECP256K1, /*!< Domain parameters for 256-bit "Koblitz" curve. */
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||||||
} mbedtls_ecp_group_id;
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} mbedtls_ecp_group_id;
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||||||
|
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||||||
/**
|
/**
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||||||
* Number of supported curves (plus one for NONE).
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* The number of supported curves, plus one for #MBEDTLS_ECP_DP_NONE.
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||||||
*
|
*
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||||||
* (Montgomery curves excluded for now.)
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* \note Montgomery curves are currently excluded.
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||||||
*/
|
*/
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||||||
#define MBEDTLS_ECP_DP_MAX 12
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#define MBEDTLS_ECP_DP_MAX 12
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|
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||||||
/**
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/**
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||||||
* Curve information for use by other modules
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* Curve information, for use by other modules.
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||||||
*/
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*/
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||||||
typedef struct
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typedef struct
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||||||
{
|
{
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||||||
mbedtls_ecp_group_id grp_id; /*!< Internal identifier */
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mbedtls_ecp_group_id grp_id; /*!< An internal identifier. */
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||||||
uint16_t tls_id; /*!< TLS NamedCurve identifier */
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uint16_t tls_id; /*!< The TLS NamedCurve identifier. */
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||||||
uint16_t bit_size; /*!< Curve size in bits */
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uint16_t bit_size; /*!< The curve size in bits. */
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||||||
const char *name; /*!< Human-friendly name */
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const char *name; /*!< A human-friendly name. */
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||||||
} mbedtls_ecp_curve_info;
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} mbedtls_ecp_curve_info;
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||||||
|
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||||||
/**
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/**
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||||||
* \brief ECP point structure (jacobian coordinates)
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* \brief The ECP point structure, in Jacobian coordinates.
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||||||
*
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*
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||||||
* \note All functions expect and return points satisfying
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* \note All functions expect and return points satisfying
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||||||
* the following condition: Z == 0 or Z == 1. (Other
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* the following condition: <code>Z == 0</code> or
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||||||
* values of Z are used by internal functions only.)
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* <code>Z == 1</code>. Other values of \p Z are
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* The point is zero, or "at infinity", if Z == 0.
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* used only by internal functions.
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* Otherwise, X and Y are its standard (affine) coordinates.
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* The point is zero, or "at infinity", if <code>Z == 0</code>.
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* Otherwise, \p X and \p Y are its standard (affine)
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* coordinates.
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*/
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*/
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typedef struct
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typedef struct
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||||||
{
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{
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mbedtls_mpi X; /*!< the point's X coordinate */
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mbedtls_mpi X; /*!< The X coordinate of the ECP point. */
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mbedtls_mpi Y; /*!< the point's Y coordinate */
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mbedtls_mpi Y; /*!< The Y coordinate of the ECP point. */
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||||||
mbedtls_mpi Z; /*!< the point's Z coordinate */
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mbedtls_mpi Z; /*!< The Z coordinate of the ECP point. */
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}
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}
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mbedtls_ecp_point;
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mbedtls_ecp_point;
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||||||
|
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||||||
/**
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/**
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||||||
* \brief ECP group structure
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* \brief The ECP group structure.
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||||||
*
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*
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||||||
* We consider two types of curves equations:
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* We consider two types of curve equations:
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||||||
* 1. Short Weierstrass y^2 = x^3 + A x + B mod P (SEC1 + RFC 4492)
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* <ul><li>Short Weierstrass: <code>y^2 = x^3 + A x + B mod P</code>
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||||||
* 2. Montgomery, y^2 = x^3 + A x^2 + x mod P (Curve25519 + draft)
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* (SEC1 + RFC-4492)</li>
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||||||
* In both cases, a generator G for a prime-order subgroup is fixed. In the
|
* <li>Montgomery: <code>y^2 = x^3 + A x^2 + x mod P</code> (Curve25519,
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||||||
* short weierstrass, this subgroup is actually the whole curve, and its
|
* Curve448)</li></ul>
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||||||
* cardinal is denoted by N.
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* In both cases, the generator (\p G) for a prime-order subgroup is fixed.
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||||||
*
|
*
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||||||
* In the case of Short Weierstrass curves, our code requires that N is an odd
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* For Short Weierstrass, this subgroup is the whole curve, and its
|
||||||
* prime. (Use odd in mbedtls_ecp_mul() and prime in mbedtls_ecdsa_sign() for blinding.)
|
* cardinality is denoted by \p N. Our code requires that \p N is an
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||||||
|
* odd prime as mbedtls_ecp_mul() requires an odd number, and
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||||||
|
* mbedtls_ecdsa_sign() requires that it is prime for blinding purposes.
|
||||||
*
|
*
|
||||||
* In the case of Montgomery curves, we don't store A but (A + 2) / 4 which is
|
* For Montgomery curves, we do not store \p A, but <code>(A + 2) / 4</code>,
|
||||||
* the quantity actually used in the formulas. Also, nbits is not the size of N
|
* which is the quantity used in the formulas. Additionally, \p nbits is
|
||||||
* but the required size for private keys.
|
* not the size of \p N but the required size for private keys.
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||||||
|
*
|
||||||
|
* If \p modp is NULL, reduction modulo \p P is done using a generic algorithm.
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||||||
|
* Otherwise, \p modp must point to a function that takes an \p mbedtls_mpi in the
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||||||
|
* range of <code>0..2^(2*pbits)-1</code>, and transforms it in-place to an integer
|
||||||
|
* which is congruent mod \p P to the given MPI, and is close enough to \p pbits
|
||||||
|
* in size, so that it may be efficiently brought in the 0..P-1 range by a few
|
||||||
|
* additions or subtractions. Therefore, it is only an approximative modular
|
||||||
|
* reduction. It must return 0 on success and non-zero on failure.
|
||||||
*
|
*
|
||||||
* If modp is NULL, reduction modulo P is done using a generic algorithm.
|
|
||||||
* Otherwise, it must point to a function that takes an mbedtls_mpi in the range
|
|
||||||
* 0..2^(2*pbits)-1 and transforms it in-place in an integer of little more
|
|
||||||
* than pbits, so that the integer may be efficiently brought in the 0..P-1
|
|
||||||
* range by a few additions or substractions. It must return 0 on success and
|
|
||||||
* non-zero on failure.
|
|
||||||
*/
|
*/
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||||||
typedef struct
|
typedef struct
|
||||||
{
|
{
|
||||||
mbedtls_ecp_group_id id; /*!< internal group identifier */
|
mbedtls_ecp_group_id id; /*!< An internal group identifier. */
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||||||
mbedtls_mpi P; /*!< prime modulus of the base field */
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mbedtls_mpi P; /*!< The prime modulus of the base field. */
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||||||
mbedtls_mpi A; /*!< 1. A in the equation, or 2. (A + 2) / 4 */
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mbedtls_mpi A; /*!< For Short Weierstrass: \p A in the equation. For
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mbedtls_mpi B; /*!< 1. B in the equation, or 2. unused */
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Montgomery curves: <code>(A + 2) / 4</code>. */
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mbedtls_ecp_point G; /*!< generator of the (sub)group used */
|
mbedtls_mpi B; /*!< For Short Weierstrass: \p B in the equation.
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||||||
mbedtls_mpi N; /*!< the order of G */
|
For Montgomery curves: unused. */
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||||||
size_t pbits; /*!< number of bits in P */
|
mbedtls_ecp_point G; /*!< The generator of the subgroup used. */
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||||||
size_t nbits; /*!< number of bits in 1. P, or 2. private keys */
|
mbedtls_mpi N; /*!< The order of \p G. */
|
||||||
unsigned int h; /*!< internal: 1 if the constants are static */
|
size_t pbits; /*!< The number of bits in \p P.*/
|
||||||
int (*modp)(mbedtls_mpi *); /*!< function for fast reduction mod P */
|
size_t nbits; /*!< For Short Weierstrass: The number of bits in \p P.
|
||||||
int (*t_pre)(mbedtls_ecp_point *, void *); /*!< unused */
|
For Montgomery curves: the number of bits in the
|
||||||
int (*t_post)(mbedtls_ecp_point *, void *); /*!< unused */
|
private keys. */
|
||||||
void *t_data; /*!< unused */
|
unsigned int h; /*!< \internal 1 if the constants are static. */
|
||||||
mbedtls_ecp_point *T; /*!< pre-computed points for ecp_mul_comb() */
|
int (*modp)(mbedtls_mpi *); /*!< The function for fast pseudo-reduction
|
||||||
size_t T_size; /*!< number for pre-computed points */
|
mod \p P (see above).*/
|
||||||
|
int (*t_pre)(mbedtls_ecp_point *, void *); /*!< Unused. */
|
||||||
|
int (*t_post)(mbedtls_ecp_point *, void *); /*!< Unused. */
|
||||||
|
void *t_data; /*!< Unused. */
|
||||||
|
mbedtls_ecp_point *T; /*!< Pre-computed points for ecp_mul_comb(). */
|
||||||
|
size_t T_size; /*!< The number of pre-computed points. */
|
||||||
}
|
}
|
||||||
mbedtls_ecp_group;
|
mbedtls_ecp_group;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief ECP key pair structure
|
* \brief The ECP key-pair structure.
|
||||||
*
|
*
|
||||||
* A generic key pair that could be used for ECDSA, fixed ECDH, etc.
|
* A generic key-pair that may be used for ECDSA and fixed ECDH, for example.
|
||||||
*
|
*
|
||||||
* \note Members purposefully in the same order as struc mbedtls_ecdsa_context.
|
* \note Members are deliberately in the same order as in the
|
||||||
|
* ::mbedtls_ecdsa_context structure.
|
||||||
*/
|
*/
|
||||||
typedef struct
|
typedef struct
|
||||||
{
|
{
|
||||||
mbedtls_ecp_group grp; /*!< Elliptic curve and base point */
|
mbedtls_ecp_group grp; /*!< The elliptic curve and base point. */
|
||||||
mbedtls_mpi d; /*!< our secret value */
|
mbedtls_mpi d; /*!< Our secret value. */
|
||||||
mbedtls_ecp_point Q; /*!< our public value */
|
mbedtls_ecp_point Q; /*!< Our public value. */
|
||||||
}
|
}
|
||||||
mbedtls_ecp_keypair;
|
mbedtls_ecp_keypair;
|
||||||
|
|
||||||
|
@ -177,15 +201,15 @@ mbedtls_ecp_keypair;
|
||||||
* \name SECTION: Module settings
|
* \name SECTION: Module settings
|
||||||
*
|
*
|
||||||
* The configuration options you can set for this module are in this section.
|
* The configuration options you can set for this module are in this section.
|
||||||
* Either change them in config.h or define them on the compiler command line.
|
* Either change them in config.h, or define them using the compiler command line.
|
||||||
* \{
|
* \{
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#if !defined(MBEDTLS_ECP_MAX_BITS)
|
#if !defined(MBEDTLS_ECP_MAX_BITS)
|
||||||
/**
|
/**
|
||||||
* Maximum size of the groups (that is, of N and P)
|
* The maximum size of the groups, that is, of \c N and \c P.
|
||||||
*/
|
*/
|
||||||
#define MBEDTLS_ECP_MAX_BITS 521 /**< Maximum bit size of groups */
|
#define MBEDTLS_ECP_MAX_BITS 521 /**< The maximum size of groups, in bits. */
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#define MBEDTLS_ECP_MAX_BYTES ( ( MBEDTLS_ECP_MAX_BITS + 7 ) / 8 )
|
#define MBEDTLS_ECP_MAX_BYTES ( ( MBEDTLS_ECP_MAX_BITS + 7 ) / 8 )
|
||||||
|
@ -208,11 +232,10 @@ mbedtls_ecp_keypair;
|
||||||
* 521 145 141 135 120 97
|
* 521 145 141 135 120 97
|
||||||
* 384 214 209 198 177 146
|
* 384 214 209 198 177 146
|
||||||
* 256 320 320 303 262 226
|
* 256 320 320 303 262 226
|
||||||
|
|
||||||
* 224 475 475 453 398 342
|
* 224 475 475 453 398 342
|
||||||
* 192 640 640 633 587 476
|
* 192 640 640 633 587 476
|
||||||
*/
|
*/
|
||||||
#define MBEDTLS_ECP_WINDOW_SIZE 6 /**< Maximum window size used */
|
#define MBEDTLS_ECP_WINDOW_SIZE 6 /**< The maximum window size used. */
|
||||||
#endif /* MBEDTLS_ECP_WINDOW_SIZE */
|
#endif /* MBEDTLS_ECP_WINDOW_SIZE */
|
||||||
|
|
||||||
#if !defined(MBEDTLS_ECP_FIXED_POINT_OPTIM)
|
#if !defined(MBEDTLS_ECP_FIXED_POINT_OPTIM)
|
||||||
|
@ -227,7 +250,7 @@ mbedtls_ecp_keypair;
|
||||||
*
|
*
|
||||||
* Change this value to 0 to reduce peak memory usage.
|
* Change this value to 0 to reduce peak memory usage.
|
||||||
*/
|
*/
|
||||||
#define MBEDTLS_ECP_FIXED_POINT_OPTIM 1 /**< Enable fixed-point speed-up */
|
#define MBEDTLS_ECP_FIXED_POINT_OPTIM 1 /**< Enable fixed-point speed-up. */
|
||||||
#endif /* MBEDTLS_ECP_FIXED_POINT_OPTIM */
|
#endif /* MBEDTLS_ECP_FIXED_POINT_OPTIM */
|
||||||
|
|
||||||
/* \} name SECTION: Module settings */
|
/* \} name SECTION: Module settings */
|
||||||
|
@ -235,25 +258,27 @@ mbedtls_ecp_keypair;
|
||||||
/*
|
/*
|
||||||
* Point formats, from RFC 4492's enum ECPointFormat
|
* Point formats, from RFC 4492's enum ECPointFormat
|
||||||
*/
|
*/
|
||||||
#define MBEDTLS_ECP_PF_UNCOMPRESSED 0 /**< Uncompressed point format */
|
#define MBEDTLS_ECP_PF_UNCOMPRESSED 0 /**< Uncompressed point format. */
|
||||||
#define MBEDTLS_ECP_PF_COMPRESSED 1 /**< Compressed point format */
|
#define MBEDTLS_ECP_PF_COMPRESSED 1 /**< Compressed point format. */
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Some other constants from RFC 4492
|
* Some other constants from RFC 4492
|
||||||
*/
|
*/
|
||||||
#define MBEDTLS_ECP_TLS_NAMED_CURVE 3 /**< ECCurveType's named_curve */
|
#define MBEDTLS_ECP_TLS_NAMED_CURVE 3 /**< The named_curve of ECCurveType. */
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Get the list of supported curves in order of preferrence
|
* \brief This function retrieves the information defined in
|
||||||
* (full information)
|
* mbedtls_ecp_curve_info() for all supported curves in order
|
||||||
|
* of preference.
|
||||||
*
|
*
|
||||||
* \return A statically allocated array, the last entry is 0.
|
* \return A statically allocated array. The last entry is 0.
|
||||||
*/
|
*/
|
||||||
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_list( void );
|
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_list( void );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Get the list of supported curves in order of preferrence
|
* \brief This function retrieves the list of internal group
|
||||||
* (grp_id only)
|
* identifiers of all supported curves in the order of
|
||||||
|
* preference.
|
||||||
*
|
*
|
||||||
* \return A statically allocated array,
|
* \return A statically allocated array,
|
||||||
* terminated with MBEDTLS_ECP_DP_NONE.
|
* terminated with MBEDTLS_ECP_DP_NONE.
|
||||||
|
@ -261,357 +286,400 @@ const mbedtls_ecp_curve_info *mbedtls_ecp_curve_list( void );
|
||||||
const mbedtls_ecp_group_id *mbedtls_ecp_grp_id_list( void );
|
const mbedtls_ecp_group_id *mbedtls_ecp_grp_id_list( void );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Get curve information from an internal group identifier
|
* \brief This function retrieves curve information from an internal
|
||||||
|
* group identifier.
|
||||||
*
|
*
|
||||||
* \param grp_id A MBEDTLS_ECP_DP_XXX value
|
* \param grp_id An \c MBEDTLS_ECP_DP_XXX value.
|
||||||
*
|
*
|
||||||
* \return The associated curve information or NULL
|
* \return The associated curve information on success.
|
||||||
|
* \return NULL on failure.
|
||||||
*/
|
*/
|
||||||
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_grp_id( mbedtls_ecp_group_id grp_id );
|
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_grp_id( mbedtls_ecp_group_id grp_id );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Get curve information from a TLS NamedCurve value
|
* \brief This function retrieves curve information from a TLS
|
||||||
|
* NamedCurve value.
|
||||||
*
|
*
|
||||||
* \param tls_id A MBEDTLS_ECP_DP_XXX value
|
* \param tls_id An \c MBEDTLS_ECP_DP_XXX value.
|
||||||
*
|
*
|
||||||
* \return The associated curve information or NULL
|
* \return The associated curve information on success.
|
||||||
|
* \return NULL on failure.
|
||||||
*/
|
*/
|
||||||
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_tls_id( uint16_t tls_id );
|
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_tls_id( uint16_t tls_id );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Get curve information from a human-readable name
|
* \brief This function retrieves curve information from a
|
||||||
|
* human-readable name.
|
||||||
*
|
*
|
||||||
* \param name The name
|
* \param name The human-readable name.
|
||||||
*
|
*
|
||||||
* \return The associated curve information or NULL
|
* \return The associated curve information on success.
|
||||||
|
* \return NULL on failure.
|
||||||
*/
|
*/
|
||||||
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_name( const char *name );
|
const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_name( const char *name );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Initialize a point (as zero)
|
* \brief This function initializes a point as zero.
|
||||||
|
*
|
||||||
|
* \param pt The point to initialize.
|
||||||
*/
|
*/
|
||||||
void mbedtls_ecp_point_init( mbedtls_ecp_point *pt );
|
void mbedtls_ecp_point_init( mbedtls_ecp_point *pt );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Initialize a group (to something meaningless)
|
* \brief This function initializes an ECP group context
|
||||||
|
* without loading any domain parameters.
|
||||||
|
*
|
||||||
|
* \note After this function is called, domain parameters
|
||||||
|
* for various ECP groups can be loaded through the
|
||||||
|
* mbedtls_ecp_load() or mbedtls_ecp_tls_read_group()
|
||||||
|
* functions.
|
||||||
*/
|
*/
|
||||||
void mbedtls_ecp_group_init( mbedtls_ecp_group *grp );
|
void mbedtls_ecp_group_init( mbedtls_ecp_group *grp );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Initialize a key pair (as an invalid one)
|
* \brief This function initializes a key pair as an invalid one.
|
||||||
|
*
|
||||||
|
* \param key The key pair to initialize.
|
||||||
*/
|
*/
|
||||||
void mbedtls_ecp_keypair_init( mbedtls_ecp_keypair *key );
|
void mbedtls_ecp_keypair_init( mbedtls_ecp_keypair *key );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Free the components of a point
|
* \brief This function frees the components of a point.
|
||||||
|
*
|
||||||
|
* \param pt The point to free.
|
||||||
*/
|
*/
|
||||||
void mbedtls_ecp_point_free( mbedtls_ecp_point *pt );
|
void mbedtls_ecp_point_free( mbedtls_ecp_point *pt );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Free the components of an ECP group
|
* \brief This function frees the components of an ECP group.
|
||||||
|
* \param grp The group to free.
|
||||||
*/
|
*/
|
||||||
void mbedtls_ecp_group_free( mbedtls_ecp_group *grp );
|
void mbedtls_ecp_group_free( mbedtls_ecp_group *grp );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Free the components of a key pair
|
* \brief This function frees the components of a key pair.
|
||||||
|
* \param key The key pair to free.
|
||||||
*/
|
*/
|
||||||
void mbedtls_ecp_keypair_free( mbedtls_ecp_keypair *key );
|
void mbedtls_ecp_keypair_free( mbedtls_ecp_keypair *key );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Copy the contents of point Q into P
|
* \brief This function copies the contents of point \p Q into
|
||||||
|
* point \p P.
|
||||||
*
|
*
|
||||||
* \param P Destination point
|
* \param P The destination point.
|
||||||
* \param Q Source point
|
* \param Q The source point.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
|
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_copy( mbedtls_ecp_point *P, const mbedtls_ecp_point *Q );
|
int mbedtls_ecp_copy( mbedtls_ecp_point *P, const mbedtls_ecp_point *Q );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Copy the contents of a group object
|
* \brief This function copies the contents of group \p src into
|
||||||
|
* group \p dst.
|
||||||
*
|
*
|
||||||
* \param dst Destination group
|
* \param dst The destination group.
|
||||||
* \param src Source group
|
* \param src The source group.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
|
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_group_copy( mbedtls_ecp_group *dst, const mbedtls_ecp_group *src );
|
int mbedtls_ecp_group_copy( mbedtls_ecp_group *dst, const mbedtls_ecp_group *src );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Set a point to zero
|
* \brief This function sets a point to zero.
|
||||||
*
|
*
|
||||||
* \param pt Destination point
|
* \param pt The point to set.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
|
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_set_zero( mbedtls_ecp_point *pt );
|
int mbedtls_ecp_set_zero( mbedtls_ecp_point *pt );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Tell if a point is zero
|
* \brief This function checks if a point is zero.
|
||||||
*
|
*
|
||||||
* \param pt Point to test
|
* \param pt The point to test.
|
||||||
*
|
*
|
||||||
* \return 1 if point is zero, 0 otherwise
|
* \return \c 1 if the point is zero.
|
||||||
|
* \return \c 0 if the point is non-zero.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_is_zero( mbedtls_ecp_point *pt );
|
int mbedtls_ecp_is_zero( mbedtls_ecp_point *pt );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Compare two points
|
* \brief This function compares two points.
|
||||||
*
|
*
|
||||||
* \note This assumes the points are normalized. Otherwise,
|
* \note This assumes that the points are normalized. Otherwise,
|
||||||
* they may compare as "not equal" even if they are.
|
* they may compare as "not equal" even if they are.
|
||||||
*
|
*
|
||||||
* \param P First point to compare
|
* \param P The first point to compare.
|
||||||
* \param Q Second point to compare
|
* \param Q The second point to compare.
|
||||||
*
|
*
|
||||||
* \return 0 if the points are equal,
|
* \return \c 0 if the points are equal.
|
||||||
* MBEDTLS_ERR_ECP_BAD_INPUT_DATA otherwise
|
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the points are not equal.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_point_cmp( const mbedtls_ecp_point *P,
|
int mbedtls_ecp_point_cmp( const mbedtls_ecp_point *P,
|
||||||
const mbedtls_ecp_point *Q );
|
const mbedtls_ecp_point *Q );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Import a non-zero point from two ASCII strings
|
* \brief This function imports a non-zero point from two ASCII
|
||||||
|
* strings.
|
||||||
*
|
*
|
||||||
* \param P Destination point
|
* \param P The destination point.
|
||||||
* \param radix Input numeric base
|
* \param radix The numeric base of the input.
|
||||||
* \param x First affine coordinate as a null-terminated string
|
* \param x The first affine coordinate, as a null-terminated string.
|
||||||
* \param y Second affine coordinate as a null-terminated string
|
* \param y The second affine coordinate, as a null-terminated string.
|
||||||
*
|
*
|
||||||
* \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code
|
* \return \c 0 on success.
|
||||||
|
* \return An \c MBEDTLS_ERR_MPI_XXX error code on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_point_read_string( mbedtls_ecp_point *P, int radix,
|
int mbedtls_ecp_point_read_string( mbedtls_ecp_point *P, int radix,
|
||||||
const char *x, const char *y );
|
const char *x, const char *y );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Export a point into unsigned binary data
|
* \brief This function exports a point into unsigned binary data.
|
||||||
*
|
*
|
||||||
* \param grp Group to which the point should belong
|
* \param grp The group to which the point should belong.
|
||||||
* \param P Point to export
|
* \param P The point to export.
|
||||||
* \param format Point format, should be a MBEDTLS_ECP_PF_XXX macro
|
* \param format The point format. Should be an \c MBEDTLS_ECP_PF_XXX macro.
|
||||||
* \param olen Length of the actual output
|
* \param olen The length of the output.
|
||||||
* \param buf Output buffer
|
* \param buf The output buffer.
|
||||||
* \param buflen Length of the output buffer
|
* \param buflen The length of the output buffer.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* or MBEDTLS_ERR_ECP_BAD_INPUT_DATA
|
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA
|
||||||
* or MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
|
* or #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *P,
|
int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *P,
|
||||||
int format, size_t *olen,
|
int format, size_t *olen,
|
||||||
unsigned char *buf, size_t buflen );
|
unsigned char *buf, size_t buflen );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Import a point from unsigned binary data
|
* \brief This function imports a point from unsigned binary data.
|
||||||
*
|
*
|
||||||
* \param grp Group to which the point should belong
|
* \note This function does not check that the point actually
|
||||||
* \param P Point to import
|
* belongs to the given group, see mbedtls_ecp_check_pubkey()
|
||||||
* \param buf Input buffer
|
* for that.
|
||||||
* \param ilen Actual length of input
|
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \param grp The group to which the point should belong.
|
||||||
* MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid,
|
* \param P The point to import.
|
||||||
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
|
* \param buf The input buffer.
|
||||||
* MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the point format
|
* \param ilen The length of the input.
|
||||||
|
*
|
||||||
|
* \return \c 0 on success.
|
||||||
|
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid.
|
||||||
|
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure.
|
||||||
|
* \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the point format
|
||||||
* is not implemented.
|
* is not implemented.
|
||||||
*
|
*
|
||||||
* \note This function does NOT check that the point actually
|
|
||||||
* belongs to the given group, see mbedtls_ecp_check_pubkey() for
|
|
||||||
* that.
|
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P,
|
int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P,
|
||||||
const unsigned char *buf, size_t ilen );
|
const unsigned char *buf, size_t ilen );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Import a point from a TLS ECPoint record
|
* \brief This function imports a point from a TLS ECPoint record.
|
||||||
*
|
*
|
||||||
* \param grp ECP group used
|
* \note On function return, \p buf is updated to point to immediately
|
||||||
* \param pt Destination point
|
* after the ECPoint record.
|
||||||
* \param buf $(Start of input buffer)
|
|
||||||
* \param len Buffer length
|
|
||||||
*
|
*
|
||||||
* \note buf is updated to point right after the ECPoint on exit
|
* \param grp The ECP group used.
|
||||||
|
* \param pt The destination point.
|
||||||
|
* \param buf The address of the pointer to the start of the input buffer.
|
||||||
|
* \param len The length of the buffer.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* MBEDTLS_ERR_MPI_XXX if initialization failed
|
* \return An \c MBEDTLS_ERR_MPI_XXX error code on initialization failure.
|
||||||
* MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid
|
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_tls_read_point( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt,
|
int mbedtls_ecp_tls_read_point( const mbedtls_ecp_group *grp, mbedtls_ecp_point *pt,
|
||||||
const unsigned char **buf, size_t len );
|
const unsigned char **buf, size_t len );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Export a point as a TLS ECPoint record
|
* \brief This function exports a point as a TLS ECPoint record.
|
||||||
*
|
*
|
||||||
* \param grp ECP group used
|
* \param grp The ECP group used.
|
||||||
* \param pt Point to export
|
* \param pt The point format to export to. The point format is an
|
||||||
* \param format Export format
|
* \c MBEDTLS_ECP_PF_XXX constant.
|
||||||
* \param olen length of data written
|
* \param format The export format.
|
||||||
* \param buf Buffer to write to
|
* \param olen The length of the data written.
|
||||||
* \param blen Buffer length
|
* \param buf The buffer to write to.
|
||||||
|
* \param blen The length of the buffer.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* or MBEDTLS_ERR_ECP_BAD_INPUT_DATA
|
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA or
|
||||||
* or MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
|
* #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_tls_write_point( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt,
|
int mbedtls_ecp_tls_write_point( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt,
|
||||||
int format, size_t *olen,
|
int format, size_t *olen,
|
||||||
unsigned char *buf, size_t blen );
|
unsigned char *buf, size_t blen );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Set a group using well-known domain parameters
|
* \brief This function sets a group using standardized domain parameters.
|
||||||
*
|
*
|
||||||
* \param grp Destination group
|
* \note The index should be a value of the NamedCurve enum,
|
||||||
* \param id Index in the list of well-known domain parameters
|
* as defined in <em>RFC-4492: Elliptic Curve Cryptography
|
||||||
|
* (ECC) Cipher Suites for Transport Layer Security (TLS)</em>,
|
||||||
|
* usually in the form of an \c MBEDTLS_ECP_DP_XXX macro.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \param grp The destination group.
|
||||||
* MBEDTLS_ERR_MPI_XXX if initialization failed
|
* \param id The identifier of the domain parameter set to load.
|
||||||
* MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE for unkownn groups
|
|
||||||
*
|
*
|
||||||
* \note Index should be a value of RFC 4492's enum NamedCurve,
|
* \return \c 0 on success,
|
||||||
* usually in the form of a MBEDTLS_ECP_DP_XXX macro.
|
* \return An \c MBEDTLS_ERR_MPI_XXX error code on initialization failure.
|
||||||
|
* \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE for unkownn groups.
|
||||||
|
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id );
|
int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Set a group from a TLS ECParameters record
|
* \brief This function sets a group from a TLS ECParameters record.
|
||||||
*
|
*
|
||||||
* \param grp Destination group
|
* \note \p buf is updated to point right after the ECParameters record
|
||||||
* \param buf &(Start of input buffer)
|
* on exit.
|
||||||
* \param len Buffer length
|
|
||||||
*
|
*
|
||||||
* \note buf is updated to point right after ECParameters on exit
|
* \param grp The destination group.
|
||||||
|
* \param buf The address of the pointer to the start of the input buffer.
|
||||||
|
* \param len The length of the buffer.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* MBEDTLS_ERR_MPI_XXX if initialization failed
|
* \return An \c MBEDTLS_ERR_MPI_XXX error code on initialization failure.
|
||||||
* MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid
|
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if input is invalid.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_tls_read_group( mbedtls_ecp_group *grp, const unsigned char **buf, size_t len );
|
int mbedtls_ecp_tls_read_group( mbedtls_ecp_group *grp, const unsigned char **buf, size_t len );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Write the TLS ECParameters record for a group
|
* \brief This function writes the TLS ECParameters record for a group.
|
||||||
*
|
*
|
||||||
* \param grp ECP group used
|
* \param grp The ECP group used.
|
||||||
* \param olen Number of bytes actually written
|
* \param olen The number of Bytes written.
|
||||||
* \param buf Buffer to write to
|
* \param buf The buffer to write to.
|
||||||
* \param blen Buffer length
|
* \param blen The length of the buffer.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* or MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
|
* \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_tls_write_group( const mbedtls_ecp_group *grp, size_t *olen,
|
int mbedtls_ecp_tls_write_group( const mbedtls_ecp_group *grp, size_t *olen,
|
||||||
unsigned char *buf, size_t blen );
|
unsigned char *buf, size_t blen );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Multiplication by an integer: R = m * P
|
* \brief This function performs multiplication of a point by
|
||||||
* (Not thread-safe to use same group in multiple threads)
|
* an integer: \p R = \p m * \p P.
|
||||||
*
|
*
|
||||||
* \note In order to prevent timing attacks, this function
|
* It is not thread-safe to use same group in multiple threads.
|
||||||
* executes the exact same sequence of (base field)
|
|
||||||
* operations for any valid m. It avoids any if-branch or
|
|
||||||
* array index depending on the value of m.
|
|
||||||
*
|
*
|
||||||
* \note If f_rng is not NULL, it is used to randomize intermediate
|
* \note To prevent timing attacks, this function
|
||||||
* results in order to prevent potential timing attacks
|
* executes the exact same sequence of base-field
|
||||||
* targeting these results. It is recommended to always
|
* operations for any valid \p m. It avoids any if-branch or
|
||||||
* provide a non-NULL f_rng (the overhead is negligible).
|
* array index depending on the value of \p m.
|
||||||
*
|
*
|
||||||
* \param grp ECP group
|
* \note If \p f_rng is not NULL, it is used to randomize
|
||||||
* \param R Destination point
|
* intermediate results to prevent potential timing attacks
|
||||||
* \param m Integer by which to multiply
|
* targeting these results. We recommend always providing
|
||||||
* \param P Point to multiply
|
* a non-NULL \p f_rng. The overhead is negligible.
|
||||||
* \param f_rng RNG function (see notes)
|
|
||||||
* \param p_rng RNG parameter
|
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \param grp The ECP group.
|
||||||
* MBEDTLS_ERR_ECP_INVALID_KEY if m is not a valid privkey
|
* \param R The destination point.
|
||||||
* or P is not a valid pubkey,
|
* \param m The integer by which to multiply.
|
||||||
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
|
* \param P The point to multiply.
|
||||||
|
* \param f_rng The RNG function.
|
||||||
|
* \param p_rng The RNG context.
|
||||||
|
*
|
||||||
|
* \return \c 0 on success.
|
||||||
|
* \return #MBEDTLS_ERR_ECP_INVALID_KEY if \p m is not a valid private
|
||||||
|
* key, or \p P is not a valid public key.
|
||||||
|
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_mul( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
|
int mbedtls_ecp_mul( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
|
||||||
const mbedtls_mpi *m, const mbedtls_ecp_point *P,
|
const mbedtls_mpi *m, const mbedtls_ecp_point *P,
|
||||||
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
|
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Multiplication and addition of two points by integers:
|
* \brief This function performs multiplication and addition of two
|
||||||
* R = m * P + n * Q
|
* points by integers: \p R = \p m * \p P + \p n * \p Q
|
||||||
* (Not thread-safe to use same group in multiple threads)
|
|
||||||
*
|
*
|
||||||
* \note In contrast to mbedtls_ecp_mul(), this function does not guarantee
|
* It is not thread-safe to use same group in multiple threads.
|
||||||
* a constant execution flow and timing.
|
|
||||||
*
|
*
|
||||||
* \param grp ECP group
|
* \note In contrast to mbedtls_ecp_mul(), this function does not
|
||||||
* \param R Destination point
|
* guarantee a constant execution flow and timing.
|
||||||
* \param m Integer by which to multiply P
|
|
||||||
* \param P Point to multiply by m
|
|
||||||
* \param n Integer by which to multiply Q
|
|
||||||
* \param Q Point to be multiplied by n
|
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \param grp The ECP group.
|
||||||
* MBEDTLS_ERR_ECP_INVALID_KEY if m or n is not a valid privkey
|
* \param R The destination point.
|
||||||
* or P or Q is not a valid pubkey,
|
* \param m The integer by which to multiply \p P.
|
||||||
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
|
* \param P The point to multiply by \p m.
|
||||||
|
* \param n The integer by which to multiply \p Q.
|
||||||
|
* \param Q The point to be multiplied by \p n.
|
||||||
|
*
|
||||||
|
* \return \c 0 on success.
|
||||||
|
* \return #MBEDTLS_ERR_ECP_INVALID_KEY if \p m or \p n are not
|
||||||
|
* valid private keys, or \p P or \p Q are not valid public
|
||||||
|
* keys.
|
||||||
|
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_muladd( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
|
int mbedtls_ecp_muladd( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
|
||||||
const mbedtls_mpi *m, const mbedtls_ecp_point *P,
|
const mbedtls_mpi *m, const mbedtls_ecp_point *P,
|
||||||
const mbedtls_mpi *n, const mbedtls_ecp_point *Q );
|
const mbedtls_mpi *n, const mbedtls_ecp_point *Q );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Check that a point is a valid public key on this curve
|
* \brief This function checks that a point is a valid public key
|
||||||
|
* on this curve.
|
||||||
*
|
*
|
||||||
* \param grp Curve/group the point should belong to
|
* It only checks that the point is non-zero, has
|
||||||
* \param pt Point to check
|
* valid coordinates and lies on the curve. It does not verify
|
||||||
|
* that it is indeed a multiple of \p G. This additional
|
||||||
|
* check is computationally more expensive, is not required
|
||||||
|
* by standards, and should not be necessary if the group
|
||||||
|
* used has a small cofactor. In particular, it is useless for
|
||||||
|
* the NIST groups which all have a cofactor of 1.
|
||||||
*
|
*
|
||||||
* \return 0 if point is a valid public key,
|
* \note This function uses bare components rather than an
|
||||||
* MBEDTLS_ERR_ECP_INVALID_KEY otherwise.
|
* ::mbedtls_ecp_keypair structure, to ease use with other
|
||||||
|
* structures, such as ::mbedtls_ecdh_context or
|
||||||
|
* ::mbedtls_ecdsa_context.
|
||||||
*
|
*
|
||||||
* \note This function only checks the point is non-zero, has valid
|
* \param grp The curve the point should lie on.
|
||||||
* coordinates and lies on the curve, but not that it is
|
* \param pt The point to check.
|
||||||
* indeed a multiple of G. This is additional check is more
|
|
||||||
* expensive, isn't required by standards, and shouldn't be
|
|
||||||
* necessary if the group used has a small cofactor. In
|
|
||||||
* particular, it is useless for the NIST groups which all
|
|
||||||
* have a cofactor of 1.
|
|
||||||
*
|
*
|
||||||
* \note Uses bare components rather than an mbedtls_ecp_keypair structure
|
* \return \c 0 if the point is a valid public key.
|
||||||
* in order to ease use with other structures such as
|
* \return #MBEDTLS_ERR_ECP_INVALID_KEY on failure.
|
||||||
* mbedtls_ecdh_context of mbedtls_ecdsa_context.
|
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt );
|
int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *pt );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Check that an mbedtls_mpi is a valid private key for this curve
|
* \brief This function checks that an \p mbedtls_mpi is a valid private
|
||||||
|
* key for this curve.
|
||||||
*
|
*
|
||||||
* \param grp Group used
|
* \note This function uses bare components rather than an
|
||||||
* \param d Integer to check
|
* ::mbedtls_ecp_keypair structure to ease use with other
|
||||||
|
* structures, such as ::mbedtls_ecdh_context or
|
||||||
|
* ::mbedtls_ecdsa_context.
|
||||||
*
|
*
|
||||||
* \return 0 if point is a valid private key,
|
* \param grp The group used.
|
||||||
* MBEDTLS_ERR_ECP_INVALID_KEY otherwise.
|
* \param d The integer to check.
|
||||||
*
|
*
|
||||||
* \note Uses bare components rather than an mbedtls_ecp_keypair structure
|
* \return \c 0 if the point is a valid private key.
|
||||||
* in order to ease use with other structures such as
|
* \return #MBEDTLS_ERR_ECP_INVALID_KEY on failure.
|
||||||
* mbedtls_ecdh_context of mbedtls_ecdsa_context.
|
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi *d );
|
int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi *d );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Generate a keypair with configurable base point
|
* \brief This function generates a keypair with a configurable base
|
||||||
|
* point.
|
||||||
*
|
*
|
||||||
* \param grp ECP group
|
* \note This function uses bare components rather than an
|
||||||
* \param G Chosen base point
|
* ::mbedtls_ecp_keypair structure to ease use with other
|
||||||
* \param d Destination MPI (secret part)
|
* structures, such as ::mbedtls_ecdh_context or
|
||||||
* \param Q Destination point (public part)
|
* ::mbedtls_ecdsa_context.
|
||||||
* \param f_rng RNG function
|
|
||||||
* \param p_rng RNG parameter
|
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \param grp The ECP group.
|
||||||
* or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
|
* \param G The chosen base point.
|
||||||
|
* \param d The destination MPI (secret part).
|
||||||
|
* \param Q The destination point (public part).
|
||||||
|
* \param f_rng The RNG function.
|
||||||
|
* \param p_rng The RNG context.
|
||||||
*
|
*
|
||||||
* \note Uses bare components rather than an mbedtls_ecp_keypair structure
|
* \return \c 0 on success.
|
||||||
* in order to ease use with other structures such as
|
* \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX error code
|
||||||
* mbedtls_ecdh_context of mbedtls_ecdsa_context.
|
* on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp,
|
int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp,
|
||||||
const mbedtls_ecp_point *G,
|
const mbedtls_ecp_point *G,
|
||||||
|
@ -620,57 +688,66 @@ int mbedtls_ecp_gen_keypair_base( mbedtls_ecp_group *grp,
|
||||||
void *p_rng );
|
void *p_rng );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Generate a keypair
|
* \brief This function generates an ECP keypair.
|
||||||
*
|
*
|
||||||
* \param grp ECP group
|
* \note This function uses bare components rather than an
|
||||||
* \param d Destination MPI (secret part)
|
* ::mbedtls_ecp_keypair structure to ease use with other
|
||||||
* \param Q Destination point (public part)
|
* structures, such as ::mbedtls_ecdh_context or
|
||||||
* \param f_rng RNG function
|
* ::mbedtls_ecdsa_context.
|
||||||
* \param p_rng RNG parameter
|
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \param grp The ECP group.
|
||||||
* or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
|
* \param d The destination MPI (secret part).
|
||||||
|
* \param Q The destination point (public part).
|
||||||
|
* \param f_rng The RNG function.
|
||||||
|
* \param p_rng The RNG context.
|
||||||
*
|
*
|
||||||
* \note Uses bare components rather than an mbedtls_ecp_keypair structure
|
* \return \c 0 on success.
|
||||||
* in order to ease use with other structures such as
|
* \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX error code
|
||||||
* mbedtls_ecdh_context of mbedtls_ecdsa_context.
|
* on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_gen_keypair( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp_point *Q,
|
int mbedtls_ecp_gen_keypair( mbedtls_ecp_group *grp, mbedtls_mpi *d, mbedtls_ecp_point *Q,
|
||||||
int (*f_rng)(void *, unsigned char *, size_t),
|
int (*f_rng)(void *, unsigned char *, size_t),
|
||||||
void *p_rng );
|
void *p_rng );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Generate a keypair
|
* \brief This function generates an ECP key.
|
||||||
*
|
*
|
||||||
* \param grp_id ECP group identifier
|
* \param grp_id The ECP group identifier.
|
||||||
* \param key Destination keypair
|
* \param key The destination key.
|
||||||
* \param f_rng RNG function
|
* \param f_rng The RNG function.
|
||||||
* \param p_rng RNG parameter
|
* \param p_rng The RNG context.
|
||||||
*
|
*
|
||||||
* \return 0 if successful,
|
* \return \c 0 on success.
|
||||||
* or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
|
* \return An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX error code
|
||||||
|
* on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_gen_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
|
int mbedtls_ecp_gen_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
|
||||||
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
|
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Check a public-private key pair
|
* \brief This function checks that the keypair objects
|
||||||
|
* \p pub and \p prv have the same group and the
|
||||||
|
* same public point, and that the private key in
|
||||||
|
* \p prv is consistent with the public key.
|
||||||
*
|
*
|
||||||
* \param pub Keypair structure holding a public key
|
* \param pub The keypair structure holding the public key.
|
||||||
* \param prv Keypair structure holding a private (plus public) key
|
* If it contains a private key, that part is ignored.
|
||||||
|
* \param prv The keypair structure holding the full keypair.
|
||||||
*
|
*
|
||||||
* \return 0 if successful (keys are valid and match), or
|
* \return \c 0 on success, meaning that the keys are valid and match.
|
||||||
* MBEDTLS_ERR_ECP_BAD_INPUT_DATA, or
|
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the keys are invalid or do not match.
|
||||||
* a MBEDTLS_ERR_ECP_XXX or MBEDTLS_ERR_MPI_XXX code.
|
* \return An \c MBEDTLS_ERR_ECP_XXX or an \c MBEDTLS_ERR_MPI_XXX
|
||||||
|
* error code on calculation failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_check_pub_priv( const mbedtls_ecp_keypair *pub, const mbedtls_ecp_keypair *prv );
|
int mbedtls_ecp_check_pub_priv( const mbedtls_ecp_keypair *pub, const mbedtls_ecp_keypair *prv );
|
||||||
|
|
||||||
#if defined(MBEDTLS_SELF_TEST)
|
#if defined(MBEDTLS_SELF_TEST)
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* \brief Checkup routine
|
* \brief The ECP checkup routine.
|
||||||
*
|
*
|
||||||
* \return 0 if successful, or 1 if a test failed
|
* \return \c 0 on success.
|
||||||
|
* \return \c 1 on failure.
|
||||||
*/
|
*/
|
||||||
int mbedtls_ecp_self_test( int verbose );
|
int mbedtls_ecp_self_test( int verbose );
|
||||||
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|
||||||
|
|
|
@ -256,19 +256,19 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - The buffer is too small to write to" );
|
mbedtls_snprintf( buf, buflen, "ECP - The buffer is too small to write to" );
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - Requested curve not available" );
|
mbedtls_snprintf( buf, buflen, "ECP - The requested feature is not available, for example, the requested curve is not supported" );
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_VERIFY_FAILED) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_VERIFY_FAILED) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - The signature is not valid" );
|
mbedtls_snprintf( buf, buflen, "ECP - The signature is not valid" );
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_ALLOC_FAILED) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_ALLOC_FAILED) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - Memory allocation failed" );
|
mbedtls_snprintf( buf, buflen, "ECP - Memory allocation failed" );
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_RANDOM_FAILED) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_RANDOM_FAILED) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - Generation of random value, such as (ephemeral) key, failed" );
|
mbedtls_snprintf( buf, buflen, "ECP - Generation of random value, such as ephemeral key, failed" );
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_INVALID_KEY) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_INVALID_KEY) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - Invalid private or public key" );
|
mbedtls_snprintf( buf, buflen, "ECP - Invalid private or public key" );
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - The buffer contains a valid signature followed by more data" );
|
mbedtls_snprintf( buf, buflen, "ECP - The buffer contains a valid signature followed by more data" );
|
||||||
if( use_ret == -(MBEDTLS_ERR_ECP_HW_ACCEL_FAILED) )
|
if( use_ret == -(MBEDTLS_ERR_ECP_HW_ACCEL_FAILED) )
|
||||||
mbedtls_snprintf( buf, buflen, "ECP - ECP hardware accelerator failed" );
|
mbedtls_snprintf( buf, buflen, "ECP - The ECP hardware accelerator failed" );
|
||||||
#endif /* MBEDTLS_ECP_C */
|
#endif /* MBEDTLS_ECP_C */
|
||||||
|
|
||||||
#if defined(MBEDTLS_MD_C)
|
#if defined(MBEDTLS_MD_C)
|
||||||
|
|
Loading…
Reference in a new issue