AuroraMiddleware/mbedtls
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Allow alternate core implementation of CMAC

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This commit is contained in:
Steven Cooreman 2017-04-04 11:47:16 +02:00
parent b65c2be5f1
commit 6334277320
3 changed files with 19 additions and 0 deletions
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14
include/mbedtls/cmac.h
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@ -39,6 +39,8 @@ extern "C" {
#define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /* longest used by CMAC is 3DES */ #define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /* longest used by CMAC is 3DES */
#endif #endif
#if !defined(MBEDTLS_CMAC_ALT)
/** /**
* CMAC context structure - Contains internal state information only * CMAC context structure - Contains internal state information only
*/ */
@ -154,6 +156,18 @@ int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
unsigned char output[16] ); unsigned char output[16] );
#endif /* MBEDTLS_AES_C */ #endif /* MBEDTLS_AES_C */
#ifdef __cplusplus
}
#endif
#else /* !MBEDTLS_CMAC_ALT */
#include "cmac_alt.h"
#endif /* !MBEDTLS_CMAC_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST) && ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C) ) #if defined(MBEDTLS_SELF_TEST) && ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C) )
/** /**
* \brief Checkup routine * \brief Checkup routine

1
include/mbedtls/config.h
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@ -237,6 +237,7 @@
//#define MBEDTLS_ARC4_ALT //#define MBEDTLS_ARC4_ALT
//#define MBEDTLS_BLOWFISH_ALT //#define MBEDTLS_BLOWFISH_ALT
//#define MBEDTLS_CAMELLIA_ALT //#define MBEDTLS_CAMELLIA_ALT
//#define MBEDTLS_CMAC_ALT
//#define MBEDTLS_DES_ALT //#define MBEDTLS_DES_ALT
//#define MBEDTLS_XTEA_ALT //#define MBEDTLS_XTEA_ALT
//#define MBEDTLS_MD2_ALT //#define MBEDTLS_MD2_ALT

4
library/cmac.c
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@ -65,6 +65,8 @@
#endif /* MBEDTLS_SELF_TEST */ #endif /* MBEDTLS_SELF_TEST */
#endif /* MBEDTLS_PLATFORM_C */ #endif /* MBEDTLS_PLATFORM_C */
#if !defined(MBEDTLS_CMAC_ALT)
/* Implementation that should never be optimized out by the compiler */ /* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) { static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0; volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
@ -468,6 +470,8 @@ exit:
} }
#endif /* MBEDTLS_AES_C */ #endif /* MBEDTLS_AES_C */
#endif /* !MBEDTLS_CMAC_ALT */
#if defined(MBEDTLS_SELF_TEST) #if defined(MBEDTLS_SELF_TEST)
/* /*
* CMAC test data for SP800-38B * CMAC test data for SP800-38B