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Fixes issue of not zeroing entire block on reset and conditional compilation.
This commit is contained in:
Simon Butcher 2016-10-06 10:39:49 +01:00
parent ea680197f8
commit 2127932fb8
1 changed files with 4 additions and 4 deletions
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8
library/cmac.c
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@ -59,8 +59,7 @@
#include <stdlib.h> #include <stdlib.h>
#define mbedtls_calloc calloc #define mbedtls_calloc calloc
#define mbedtls_free free #define mbedtls_free free
#if defined(MBEDTLS_SELF_TEST) && ( defined(MBEDTLS_AES_C) || \ #if defined(MBEDTLS_SELF_TEST)
defined(MBEDTLS_DES_C) )
#include <stdio.h> #include <stdio.h>
#define mbedtls_printf printf #define mbedtls_printf printf
#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C || MBEDTLS_DES_C */ #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C || MBEDTLS_DES_C */
@ -388,8 +387,9 @@ int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx )
/* Reset the internal state */ /* Reset the internal state */
cmac_ctx->unprocessed_len = 0; cmac_ctx->unprocessed_len = 0;
mbedtls_zeroize( cmac_ctx->unprocessed_block, mbedtls_zeroize( cmac_ctx->unprocessed_block,
sizeof( cmac_ctx->unprocessed_len ) ); sizeof( cmac_ctx->unprocessed_block ));
mbedtls_zeroize( cmac_ctx->state, MBEDTLS_CIPHER_BLKSIZE_MAX ); mbedtls_zeroize( cmac_ctx->state,
sizeof( cmac_ctx->state ) );
cmac_ctx->padding_flag = 1; cmac_ctx->padding_flag = 1;
return( 0 ); return( 0 );