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Allow alternate core implementation of CCM

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This commit is contained in:
Steven Cooreman 2017-04-04 11:37:15 +02:00
parent b65c2be5f1
commit 222e2ff421
3 changed files with 20 additions and 0 deletions
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16
include/mbedtls/ccm.h
View file

@ -28,6 +28,10 @@
#define MBEDTLS_ERR_CCM_BAD_INPUT -0x000D /**< Bad input parameters to function. */ #define MBEDTLS_ERR_CCM_BAD_INPUT -0x000D /**< Bad input parameters to function. */
#define MBEDTLS_ERR_CCM_AUTH_FAILED -0x000F /**< Authenticated decryption failed. */ #define MBEDTLS_ERR_CCM_AUTH_FAILED -0x000F /**< Authenticated decryption failed. */
#if !defined(MBEDTLS_CCM_ALT)
// Regular implementation
//
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
#endif #endif
@ -125,6 +129,18 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *input, unsigned char *output, const unsigned char *input, unsigned char *output,
const unsigned char *tag, size_t tag_len ); const unsigned char *tag, size_t tag_len );
#ifdef __cplusplus
}
#endif
#else /* !MBEDTLS_CCM_ALT */
#include "ccm_alt.h"
#endif /* !MBEDTLS_CCM_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C) #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
/** /**
* \brief Checkup routine * \brief Checkup routine

1
include/mbedtls/config.h
View file

@ -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_CCM_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

3
library/ccm.c
View file

@ -49,6 +49,8 @@
#endif /* MBEDTLS_PLATFORM_C */ #endif /* MBEDTLS_PLATFORM_C */
#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */ #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
#if !defined(MBEDTLS_CCM_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;
@ -348,6 +350,7 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
return( 0 ); return( 0 );
} }
#endif /* !MBEDTLS_CCM_ALT */
#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C) #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
/* /*