135ce69361
The calculation of the expected key size when not using the test_size_function was not correct. The function has now been updated to handle all cases properly to ensure the expected key size is correct for key pairs, public keys, and symmetric keys. Cleaned up some comments and removed unused includes. Signed-off-by: John Durkop <john.durkop@fermatsoftware.com>
95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/*
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* Test driver for context size functions
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*/
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/* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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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*/
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#ifndef PSA_CRYPTO_TEST_DRIVERS_SIZE_H
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#define PSA_CRYPTO_TEST_DRIVERS_SIZE_H
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(PSA_CRYPTO_DRIVER_TEST)
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#include <psa/crypto_driver_common.h>
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typedef struct {
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unsigned int context;
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} test_driver_key_context_t;
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/** \def TEST_DRIVER_KEY_CONTEXT_BASE_SIZE
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*
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* This macro returns the base size for the key context. It is the size of the
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* driver specific information stored in each key context.
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*/
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#define TEST_DRIVER_KEY_CONTEXT_BASE_SIZE sizeof( test_driver_key_context_t )
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/** \def TEST_DRIVER_KEY_CONTEXT_KEY_PAIR_SIZE
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*
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* Number of bytes included in every key context for a key pair.
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*
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* This pair size is for an ECC 256-bit private/public key pair.
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* Based on this value, the size of the private key can be derived by
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* subtracting the public key size below from this one.
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*/
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#define TEST_DRIVER_KEY_CONTEXT_KEY_PAIR_SIZE 65
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/** \def TEST_DRIVER_KEY_CONTEXT_PUBLIC_KEY_SIZE
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*
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* Number of bytes included in every key context for a public key.
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*
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* For ECC public keys, it needs 257 bits so 33 bytes.
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*/
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#define TEST_DRIVER_KEY_CONTEXT_PUBLIC_KEY_SIZE 33
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/** \def TEST_DRIVER_KEY_CONTEXT_SYMMETRIC_FACTOR
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*
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* Every key context for a symmetric key includes this many times the key size.
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*/
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#define TEST_DRIVER_KEY_CONTEXT_SYMMETRIC_FACTOR 0
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/** \def TEST_DRIVER_KEY_CONTEXT_STORE_PUBLIC_KEY
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*
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* If this is true for a key pair, the key context includes space for the public key.
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* If this is false, no additional space is added for the public key.
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*
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* For this instance, store the public key with the private one.
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*/
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#define TEST_DRIVER_KEY_CONTEXT_STORE_PUBLIC_KEY 1
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/** \def TEST_DRIVER_KEY_CONTEXT_SIZE_FUNCTION
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*
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* If TEST_DRIVER_KEY_CONTEXT_SIZE_FUNCTION is defined, the test driver
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* provides a size_function entry point, otherwise, it does not.
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*
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* Some opaque drivers have the need to support a custom size for the storage
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* of key and context information. The size_function provides the ability to
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* provide that customization.
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*/
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//#define TEST_DRIVER_KEY_CONTEXT_SIZE_FUNCTION
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#ifdef TEST_DRIVER_KEY_CONTEXT_SIZE_FUNCTION
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size_t test_size_function(
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const psa_key_type_t key_type,
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const size_t key_bits );
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#endif /* TEST_DRIVER_KEY_CONTEXT_SIZE_FUNCTION */
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#endif /* PSA_CRYPTO_DRIVER_TEST */
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#endif /* PSA_CRYPTO_TEST_DRIVERS_SIZE_H */
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