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Add parameter validation to SHA-512 module

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Andres Amaya Garcia 2018-12-09 20:58:36 +00:00 committed by Hanno Becker
parent af0c6cb9e0
commit ba519b94a5
4 changed files with 27 additions and 1 deletions
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2
ChangeLog
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@ -41,6 +41,8 @@ API Changes
mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret() mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret() mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
* Extend ECDH interface to enable alternative implementations. * Extend ECDH interface to enable alternative implementations.
* Add validation checks for input parameters to functions in the SHA-512
module.
New deprecations New deprecations
* Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update

2
include/mbedtls/error.h
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@ -76,7 +76,7 @@
* RIPEMD160 1 0x0031-0x0031 * RIPEMD160 1 0x0031-0x0031
* SHA1 1 0x0035-0x0035 * SHA1 1 0x0035-0x0035
* SHA256 1 0x0037-0x0037 * SHA256 1 0x0037-0x0037
* SHA512 1 0x0039-0x0039 * SHA512 1 0x0039-0x0039 0x0075-0x0075
* CHACHA20 3 0x0051-0x0055 * CHACHA20 3 0x0051-0x0055
* POLY1305 3 0x0057-0x005B * POLY1305 3 0x0057-0x005B
* CHACHAPOLY 2 0x0054-0x0056 * CHACHAPOLY 2 0x0054-0x0056

1
include/mbedtls/sha512.h
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@ -37,6 +37,7 @@
/* MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED is deprecated and should not be used. */ /* MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED -0x0039 /**< SHA-512 hardware accelerator failed */ #define MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED -0x0039 /**< SHA-512 hardware accelerator failed */
#define MBEDTLS_ERR_SHA512_BAD_INPUT_DATA -0x0075 /**< Invalid input data. */
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {

23
library/sha512.c
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@ -88,8 +88,14 @@
} }
#endif /* PUT_UINT64_BE */ #endif /* PUT_UINT64_BE */
#define MBEDTLS_SHA512_VALIDATE_RET(cond) \
MBEDTLS_VALIDATE_RET( MBEDTLS_ERR_SHA512_BAD_INPUT_DATA, cond )
#define MBEDTLS_SHA512_VALIDATE(cond) MBEDTLS_VALIDATE( cond )
void mbedtls_sha512_init( mbedtls_sha512_context *ctx ) void mbedtls_sha512_init( mbedtls_sha512_context *ctx )
{ {
MBEDTLS_SHA512_VALIDATE( ctx != NULL );
memset( ctx, 0, sizeof( mbedtls_sha512_context ) ); memset( ctx, 0, sizeof( mbedtls_sha512_context ) );
} }
@ -104,6 +110,9 @@ void mbedtls_sha512_free( mbedtls_sha512_context *ctx )
void mbedtls_sha512_clone( mbedtls_sha512_context *dst, void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
const mbedtls_sha512_context *src ) const mbedtls_sha512_context *src )
{ {
MBEDTLS_SHA512_VALIDATE( dst != NULL );
MBEDTLS_SHA512_VALIDATE( src != NULL );
*dst = *src; *dst = *src;
} }
@ -112,6 +121,8 @@ void mbedtls_sha512_clone( mbedtls_sha512_context *dst,
*/ */
int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 ) int mbedtls_sha512_starts_ret( mbedtls_sha512_context *ctx, int is384 )
{ {
MBEDTLS_SHA512_VALIDATE_RET( ctx != NULL );
ctx->total[0] = 0; ctx->total[0] = 0;
ctx->total[1] = 0; ctx->total[1] = 0;
@ -209,6 +220,9 @@ int mbedtls_internal_sha512_process( mbedtls_sha512_context *ctx,
uint64_t temp1, temp2, W[80]; uint64_t temp1, temp2, W[80];
uint64_t A, B, C, D, E, F, G, H; uint64_t A, B, C, D, E, F, G, H;
MBEDTLS_SHA512_VALIDATE_RET( ctx != NULL );
MBEDTLS_SHA512_VALIDATE_RET( (const unsigned char *)data != NULL );
#define SHR(x,n) (x >> n) #define SHR(x,n) (x >> n)
#define ROTR(x,n) (SHR(x,n) | (x << (64 - n))) #define ROTR(x,n) (SHR(x,n) | (x << (64 - n)))
@ -297,6 +311,9 @@ int mbedtls_sha512_update_ret( mbedtls_sha512_context *ctx,
if( ilen == 0 ) if( ilen == 0 )
return( 0 ); return( 0 );
MBEDTLS_SHA512_VALIDATE_RET( ctx != NULL );
MBEDTLS_SHA512_VALIDATE_RET( input != NULL );
left = (unsigned int) (ctx->total[0] & 0x7F); left = (unsigned int) (ctx->total[0] & 0x7F);
fill = 128 - left; fill = 128 - left;
@ -351,6 +368,9 @@ int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx,
unsigned used; unsigned used;
uint64_t high, low; uint64_t high, low;
MBEDTLS_SHA512_VALIDATE_RET( ctx != NULL );
MBEDTLS_SHA512_VALIDATE_RET( (unsigned char *)output != NULL );
/* /*
* Add padding: 0x80 then 0x00 until 16 bytes remain for the length * Add padding: 0x80 then 0x00 until 16 bytes remain for the length
*/ */
@ -427,6 +447,9 @@ int mbedtls_sha512_ret( const unsigned char *input,
int ret; int ret;
mbedtls_sha512_context ctx; mbedtls_sha512_context ctx;
MBEDTLS_SHA512_VALIDATE_RET( ilen == 0 || input != NULL );
MBEDTLS_SHA512_VALIDATE_RET( (unsigned char *)output != NULL );
mbedtls_sha512_init( &ctx ); mbedtls_sha512_init( &ctx );
if( ( ret = mbedtls_sha512_starts_ret( &ctx, is384 ) ) != 0 ) if( ( ret = mbedtls_sha512_starts_ret( &ctx, is384 ) ) != 0 )