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aes: Remove AES-XEX

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AES-XEX is a building block for other cryptographic standards and not yet a
standard in and of itself. We'll just provide the standardized AES-XTS
algorithm, and not AES-XEX. The AES-XTS algorithm and interface provided
can be used to perform the AES-XEX algorithm when the length of the input
is a multiple of the AES block size.
This commit is contained in:
Jaeden Amero 2018-05-17 16:42:08 +01:00
parent 010c2cb456
commit e9ecf00007
8 changed files with 2 additions and 3794 deletions
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24
include/mbedtls/aes.h
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@ -213,30 +213,6 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CBC */
#if defined(MBEDTLS_CIPHER_MODE_XEX)
/**
* \brief AES-XEX buffer encryption/decryption
* Length should be a multiple of the block size (16 bytes)
*
* \param crypt_ctx AES context for encrypting data
* \param tweak_ctx AES context for xor-ing with data
* \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
* \param length length of the input data
* \param iv initialization vector
* \param input buffer holding the input data
* \param output buffer holding the output data
*
* \return 0 if successful, or MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH
*/
int mbedtls_aes_crypt_xex( mbedtls_aes_context *crypt_ctx,
mbedtls_aes_context *tweak_ctx,
int mode,
size_t length,
unsigned char iv[16],
const unsigned char *input,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_XEX */
#if defined(MBEDTLS_CIPHER_MODE_XTS)
/**
* \brief AES-XTS buffer encryption/decryption