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Implement AEAD-ChaCha20-Poly1305.

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This implementation is based off the description in RFC 7539.

The ChaCha20 code is also updated to provide a means of generating
keystream blocks with arbitrary counter values. This is used to
generated the one-time Poly1305 key in the AEAD construction.
This commit is contained in:
Daniel King
2016-05-17 14:43:01 -03:00
committed by Manuel Pégourié-Gonnard
parent adc32c0b50
commit b8025c5826
15 changed files with 954 additions and 32 deletions
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11
library/error.c
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@ -41,6 +41,10 @@
#include <stdio.h>
#if defined(MBEDTLS_AEAD_CHACHA20_POLY1305_C)
#include "mbedtls/aead_chacha20_poly1305.h"
#endif
#if defined(MBEDTLS_AES_C)
#include "mbedtls/aes.h"
#endif
@ -575,6 +579,13 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
// Low level error codes
//
// BEGIN generated code
#if defined(MBEDTLS_AEAD_CHACHA20_POLY1305_C)
if( use_ret == -(MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_INPUT_DATA) )
mbedtls_snprintf( buf, buflen, "AEAD_CHACHA20_POLY1305 - Invalid input parameter(s)" );
if( use_ret == -(MBEDTLS_ERR_AEAD_CHACHA20_POLY1305_BAD_STATE) )
mbedtls_snprintf( buf, buflen, "AEAD_CHACHA20_POLY1305 - The requested operation is not permitted in the current state" );
#endif /* MBEDTLS_AEAD_CHACHA20_POLY1305_C */
#if defined(MBEDTLS_AES_C)
if( use_ret == -(MBEDTLS_ERR_AES_INVALID_KEY_LENGTH) )
mbedtls_snprintf( buf, buflen, "AES - Invalid key length" );