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block_cipher: add setkey()

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Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This commit is contained in:
Manuel Pégourié-Gonnard
2023-11-10 11:52:10 +01:00
parent 21718769d1
commit 3e0884fc53
3 changed files with 68 additions and 2 deletions
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21
library/block_cipher.c
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@ -66,4 +66,25 @@ int mbedtls_block_cipher_setup(mbedtls_block_cipher_context_t *ctx,
}
}
int mbedtls_block_cipher_setkey(mbedtls_block_cipher_context_t *ctx,
const unsigned char *key,
unsigned key_bitlen)
{
switch (ctx->id) {
#if defined(MBEDTLS_AES_C)
case MBEDTLS_BLOCK_CIPHER_ID_AES:
return mbedtls_aes_setkey_enc(&ctx->ctx.aes, key, key_bitlen);
#endif
#if defined(MBEDTLS_ARIA_C)
case MBEDTLS_BLOCK_CIPHER_ID_ARIA:
return mbedtls_aria_setkey_enc(&ctx->ctx.aria, key, key_bitlen);
#endif
#if defined(MBEDTLS_CAMELLIA_C)
case MBEDTLS_BLOCK_CIPHER_ID_CAMELLIA:
return mbedtls_camellia_setkey_enc(&ctx->ctx.camellia, key, key_bitlen);
#endif
default:
return MBEDTLS_ERR_CIPHER_INVALID_CONTEXT;
}
}
#endif /* MBEDTLS_BLOCK_CIPHER_C */

18
library/block_cipher_internal.h
View File

@ -49,6 +49,24 @@ static inline void mbedtls_block_cipher_init(mbedtls_block_cipher_context_t *ctx
int mbedtls_block_cipher_setup(mbedtls_block_cipher_context_t *ctx,
mbedtls_cipher_id_t cipher_id);
/**
* \brief Set the key into the context.
*
* \param ctx The context to configure.
* \param key The buffer holding the key material.
* \param key_bitlen The size of the key in bits.
*
* \retval \c 0 on success.
* \retval #MBEDTLS_ERR_CIPHER_INVALID_CONTEXT if the context was not
* properly set up before calling this function.
* \retval One of #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH,
* #MBEDTLS_ERR_ARIA_BAD_INPUT_DATA,
* #MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA if \p key_bitlen is
* invalid.
*/
int mbedtls_block_cipher_setkey(mbedtls_block_cipher_context_t *ctx,
const unsigned char *key,
unsigned key_bitlen);
/**
* \brief Clear the context.
*