Move max sizes of RSA & EC DER keys into private pkwrite.h
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Neil Armstrong
parent
4579a972bf
commit
e0326a6acc
2 changed files with 111 additions and 78 deletions
|
|
@ -37,6 +37,9 @@
|
|||
#include "mbedtls/ecp.h"
|
||||
#include "mbedtls/platform_util.h"
|
||||
#endif
|
||||
#if defined(MBEDTLS_RSA_C) || defined(MBEDTLS_ECP_C)
|
||||
#include "pkwrite.h"
|
||||
#endif
|
||||
#if defined(MBEDTLS_ECDSA_C)
|
||||
#include "mbedtls/ecdsa.h"
|
||||
#endif
|
||||
|
|
@ -470,84 +473,6 @@ int mbedtls_pk_write_key_der( const mbedtls_pk_context *key, unsigned char *buf,
|
|||
#define PEM_BEGIN_PRIVATE_KEY_EC "-----BEGIN EC PRIVATE KEY-----\n"
|
||||
#define PEM_END_PRIVATE_KEY_EC "-----END EC PRIVATE KEY-----\n"
|
||||
|
||||
/*
|
||||
* Max sizes of key per types. Shown as tag + len (+ content).
|
||||
*/
|
||||
|
||||
#if defined(MBEDTLS_RSA_C)
|
||||
/*
|
||||
* RSA public keys:
|
||||
* SubjectPublicKeyInfo ::= SEQUENCE { 1 + 3
|
||||
* algorithm AlgorithmIdentifier, 1 + 1 (sequence)
|
||||
* + 1 + 1 + 9 (rsa oid)
|
||||
* + 1 + 1 (params null)
|
||||
* subjectPublicKey BIT STRING } 1 + 3 + (1 + below)
|
||||
* RSAPublicKey ::= SEQUENCE { 1 + 3
|
||||
* modulus INTEGER, -- n 1 + 3 + MPI_MAX + 1
|
||||
* publicExponent INTEGER -- e 1 + 3 + MPI_MAX + 1
|
||||
* }
|
||||
*/
|
||||
#define RSA_PUB_DER_MAX_BYTES ( 38 + 2 * MBEDTLS_MPI_MAX_SIZE )
|
||||
|
||||
/*
|
||||
* RSA private keys:
|
||||
* RSAPrivateKey ::= SEQUENCE { 1 + 3
|
||||
* version Version, 1 + 1 + 1
|
||||
* modulus INTEGER, 1 + 3 + MPI_MAX + 1
|
||||
* publicExponent INTEGER, 1 + 3 + MPI_MAX + 1
|
||||
* privateExponent INTEGER, 1 + 3 + MPI_MAX + 1
|
||||
* prime1 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* prime2 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* exponent1 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* exponent2 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* coefficient INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* otherPrimeInfos OtherPrimeInfos OPTIONAL 0 (not supported)
|
||||
* }
|
||||
*/
|
||||
#define MPI_MAX_SIZE_2 ( MBEDTLS_MPI_MAX_SIZE / 2 + \
|
||||
MBEDTLS_MPI_MAX_SIZE % 2 )
|
||||
#define RSA_PRV_DER_MAX_BYTES ( 47 + 3 * MBEDTLS_MPI_MAX_SIZE \
|
||||
+ 5 * MPI_MAX_SIZE_2 )
|
||||
|
||||
#else /* MBEDTLS_RSA_C */
|
||||
|
||||
#define RSA_PUB_DER_MAX_BYTES 0
|
||||
#define RSA_PRV_DER_MAX_BYTES 0
|
||||
|
||||
#endif /* MBEDTLS_RSA_C */
|
||||
|
||||
#if defined(MBEDTLS_ECP_C)
|
||||
/*
|
||||
* EC public keys:
|
||||
* SubjectPublicKeyInfo ::= SEQUENCE { 1 + 2
|
||||
* algorithm AlgorithmIdentifier, 1 + 1 (sequence)
|
||||
* + 1 + 1 + 7 (ec oid)
|
||||
* + 1 + 1 + 9 (namedCurve oid)
|
||||
* subjectPublicKey BIT STRING 1 + 2 + 1 [1]
|
||||
* + 1 (point format) [1]
|
||||
* + 2 * ECP_MAX (coords) [1]
|
||||
* }
|
||||
*/
|
||||
#define ECP_PUB_DER_MAX_BYTES ( 30 + 2 * MBEDTLS_ECP_MAX_BYTES )
|
||||
|
||||
/*
|
||||
* EC private keys:
|
||||
* ECPrivateKey ::= SEQUENCE { 1 + 2
|
||||
* version INTEGER , 1 + 1 + 1
|
||||
* privateKey OCTET STRING, 1 + 1 + ECP_MAX
|
||||
* parameters [0] ECParameters OPTIONAL, 1 + 1 + (1 + 1 + 9)
|
||||
* publicKey [1] BIT STRING OPTIONAL 1 + 2 + [1] above
|
||||
* }
|
||||
*/
|
||||
#define ECP_PRV_DER_MAX_BYTES ( 29 + 3 * MBEDTLS_ECP_MAX_BYTES )
|
||||
|
||||
#else /* MBEDTLS_ECP_C */
|
||||
|
||||
#define ECP_PUB_DER_MAX_BYTES 0
|
||||
#define ECP_PRV_DER_MAX_BYTES 0
|
||||
|
||||
#endif /* MBEDTLS_ECP_C */
|
||||
|
||||
#define PUB_DER_MAX_BYTES ( RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
|
||||
RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES )
|
||||
#define PRV_DER_MAX_BYTES ( RSA_PRV_DER_MAX_BYTES > ECP_PRV_DER_MAX_BYTES ? \
|
||||
|
|
|
|||
108
library/pkwrite.h
Normal file
108
library/pkwrite.h
Normal file
|
|
@ -0,0 +1,108 @@
|
|||
/**
|
||||
* \file pkwrite.h
|
||||
*
|
||||
* \brief Internal defines shared by the PK write module
|
||||
*/
|
||||
/*
|
||||
* Copyright The Mbed TLS Contributors
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||||
* not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#ifndef MBEDTLS_PK_WRITE_H
|
||||
#define MBEDTLS_PK_WRITE_H
|
||||
|
||||
#include "mbedtls/build_info.h"
|
||||
|
||||
#include "mbedtls/pk.h"
|
||||
|
||||
/*
|
||||
* Max sizes of key per types. Shown as tag + len (+ content).
|
||||
*/
|
||||
|
||||
#if defined(MBEDTLS_RSA_C)
|
||||
/*
|
||||
* RSA public keys:
|
||||
* SubjectPublicKeyInfo ::= SEQUENCE { 1 + 3
|
||||
* algorithm AlgorithmIdentifier, 1 + 1 (sequence)
|
||||
* + 1 + 1 + 9 (rsa oid)
|
||||
* + 1 + 1 (params null)
|
||||
* subjectPublicKey BIT STRING } 1 + 3 + (1 + below)
|
||||
* RSAPublicKey ::= SEQUENCE { 1 + 3
|
||||
* modulus INTEGER, -- n 1 + 3 + MPI_MAX + 1
|
||||
* publicExponent INTEGER -- e 1 + 3 + MPI_MAX + 1
|
||||
* }
|
||||
*/
|
||||
#define RSA_PUB_DER_MAX_BYTES ( 38 + 2 * MBEDTLS_MPI_MAX_SIZE )
|
||||
|
||||
/*
|
||||
* RSA private keys:
|
||||
* RSAPrivateKey ::= SEQUENCE { 1 + 3
|
||||
* version Version, 1 + 1 + 1
|
||||
* modulus INTEGER, 1 + 3 + MPI_MAX + 1
|
||||
* publicExponent INTEGER, 1 + 3 + MPI_MAX + 1
|
||||
* privateExponent INTEGER, 1 + 3 + MPI_MAX + 1
|
||||
* prime1 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* prime2 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* exponent1 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* exponent2 INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* coefficient INTEGER, 1 + 3 + MPI_MAX / 2 + 1
|
||||
* otherPrimeInfos OtherPrimeInfos OPTIONAL 0 (not supported)
|
||||
* }
|
||||
*/
|
||||
#define MPI_MAX_SIZE_2 ( MBEDTLS_MPI_MAX_SIZE / 2 + \
|
||||
MBEDTLS_MPI_MAX_SIZE % 2 )
|
||||
#define RSA_PRV_DER_MAX_BYTES ( 47 + 3 * MBEDTLS_MPI_MAX_SIZE \
|
||||
+ 5 * MPI_MAX_SIZE_2 )
|
||||
|
||||
#else /* MBEDTLS_RSA_C */
|
||||
|
||||
#define RSA_PUB_DER_MAX_BYTES 0
|
||||
#define RSA_PRV_DER_MAX_BYTES 0
|
||||
|
||||
#endif /* MBEDTLS_RSA_C */
|
||||
|
||||
#if defined(MBEDTLS_ECP_C)
|
||||
/*
|
||||
* EC public keys:
|
||||
* SubjectPublicKeyInfo ::= SEQUENCE { 1 + 2
|
||||
* algorithm AlgorithmIdentifier, 1 + 1 (sequence)
|
||||
* + 1 + 1 + 7 (ec oid)
|
||||
* + 1 + 1 + 9 (namedCurve oid)
|
||||
* subjectPublicKey BIT STRING 1 + 2 + 1 [1]
|
||||
* + 1 (point format) [1]
|
||||
* + 2 * ECP_MAX (coords) [1]
|
||||
* }
|
||||
*/
|
||||
#define ECP_PUB_DER_MAX_BYTES ( 30 + 2 * MBEDTLS_ECP_MAX_BYTES )
|
||||
|
||||
/*
|
||||
* EC private keys:
|
||||
* ECPrivateKey ::= SEQUENCE { 1 + 2
|
||||
* version INTEGER , 1 + 1 + 1
|
||||
* privateKey OCTET STRING, 1 + 1 + ECP_MAX
|
||||
* parameters [0] ECParameters OPTIONAL, 1 + 1 + (1 + 1 + 9)
|
||||
* publicKey [1] BIT STRING OPTIONAL 1 + 2 + [1] above
|
||||
* }
|
||||
*/
|
||||
#define ECP_PRV_DER_MAX_BYTES ( 29 + 3 * MBEDTLS_ECP_MAX_BYTES )
|
||||
|
||||
#else /* MBEDTLS_ECP_C */
|
||||
|
||||
#define ECP_PUB_DER_MAX_BYTES 0
|
||||
#define ECP_PRV_DER_MAX_BYTES 0
|
||||
|
||||
#endif /* MBEDTLS_ECP_C */
|
||||
|
||||
#endif /* MBEDTLS_PK_WRITE_H */
|
||||
Loading…
Reference in a new issue