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esp32 hwcrypto: Make SHA-224 an obvious no-op for now

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This is not the long term solution...
This commit is contained in:
Angus Gratton 2016-09-05 10:36:25 +10:00 committed by Wu Jian Gang
parent 2bee84062a
commit 2580c07ae6
3 changed files with 12 additions and 9 deletions
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14
components/esp32/hwcrypto/sha.c
View File

@ -138,10 +138,10 @@ void esp_sha256_start( SHA256_CTX *ctx, int is224 )
if ( is224 == 0 ) {
/* SHA-256 */
ctx->context_type = SHA256;
ctx->context_type = SHA2_256;
} else {
/* SHA-224 */
ctx->context_type = SHA224;
/* SHA-224 is not supported! */
ctx->context_type = SHA_INVALID;
}
}
@ -158,7 +158,13 @@ void esp_sha256_update( SHA256_CTX *ctx, const unsigned char *input, size_t ilen
*/
void esp_sha256_finish( SHA256_CTX *ctx, unsigned char output[32] )
{
ets_sha_finish(&ctx->context, ctx->context_type, output);
if ( ctx->context_type == SHA2_256 ) {
ets_sha_finish(&ctx->context, ctx->context_type, output);
} else {
/* No hardware SHA-224 support, but mbedTLS API doesn't allow failure.
For now, zero the output to make it clear it's not valid. */
bzero( output, 28 );
}
esp_sha_release_hardware();
}

4
components/esp32/include/hwcrypto/sha.h
View File

@ -109,10 +109,6 @@ void esp_sha1_finish( SHA1_CTX *ctx, unsigned char output[20] );
*/
void esp_sha1_output( const unsigned char *input, size_t ilen, unsigned char output[20] );
///
#define SHA256 SHA2_256
#define SHA224 4 /* TODO: check this */
/**
* \brief SHA-256 context structure
*/

3
components/esp32/include/rom/sha.h
View File

@ -37,7 +37,8 @@ enum SHA_TYPE {
SHA1 = 0,
SHA2_256,
SHA2_384,
SHA2_512
SHA2_512,
SHA_INVALID = -1,
};
void ets_sha_init(SHA_CTX *ctx);