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Start adding internal module block_cipher.c

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Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
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Manuel Pégourié-Gonnard
2023-11-10 11:21:17 +01:00
parent 4dec9ebdc2
commit 21718769d1
8 changed files with 223 additions and 1 deletions
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69
library/block_cipher.c Normal file
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/**
* \file block_cipher.c
*
* \brief Lightweight abstraction layer for block ciphers with 128 bit blocks,
* for use by the GCM and CCM modules.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
#include "common.h"
#include "block_cipher_internal.h"
#if defined(MBEDTLS_BLOCK_CIPHER_C)
void mbedtls_block_cipher_free(mbedtls_block_cipher_context_t *ctx)
{
switch (ctx->id) {
#if defined(MBEDTLS_AES_C)
case MBEDTLS_BLOCK_CIPHER_ID_AES:
mbedtls_aes_free(&ctx->ctx.aes);
break;
#endif
#if defined(MBEDTLS_ARIA_C)
case MBEDTLS_BLOCK_CIPHER_ID_ARIA:
mbedtls_aria_free(&ctx->ctx.aria);
break;
#endif
#if defined(MBEDTLS_CAMELLIA_C)
case MBEDTLS_BLOCK_CIPHER_ID_CAMELLIA:
mbedtls_camellia_free(&ctx->ctx.camellia);
break;
#endif
default:
break;
}
ctx->id = MBEDTLS_BLOCK_CIPHER_ID_NONE;
}
int mbedtls_block_cipher_setup(mbedtls_block_cipher_context_t *ctx,
mbedtls_cipher_id_t cipher_id)
{
switch (cipher_id) {
#if defined(MBEDTLS_AES_C)
case MBEDTLS_CIPHER_ID_AES:
ctx->id = MBEDTLS_BLOCK_CIPHER_ID_AES;
mbedtls_aes_init(&ctx->ctx.aes);
return 0;
#endif
#if defined(MBEDTLS_ARIA_C)
case MBEDTLS_CIPHER_ID_ARIA:
ctx->id = MBEDTLS_BLOCK_CIPHER_ID_ARIA;
mbedtls_aria_init(&ctx->ctx.aria);
return 0;
#endif
#if defined(MBEDTLS_CAMELLIA_C)
case MBEDTLS_CIPHER_ID_CAMELLIA:
ctx->id = MBEDTLS_BLOCK_CIPHER_ID_CAMELLIA;
mbedtls_camellia_init(&ctx->ctx.camellia);
return 0;
#endif
default:
return MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA;
}
}
#endif /* MBEDTLS_BLOCK_CIPHER_C */