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hwcrypto sha: Fix initialisation of SHA hardware in esp_shaX_start functions

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Problem exposed by previous commit.
This commit is contained in:
Angus Gratton 2016-09-09 14:27:34 +10:00
parent eb47a25012
commit 46a9754b8e
1 changed files with 11 additions and 9 deletions
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20
components/esp32/hwcrypto/sha.c
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@ -86,8 +86,9 @@ void esp_sha1_clone( esp_sha_context *dst, const esp_sha_context *src )
*/
void esp_sha1_start( esp_sha_context *ctx )
{
esp_sha_acquire_hardware();
ctx->context_type = SHA1;
esp_sha_acquire_hardware();
ets_sha_init(&ctx->context);
}
/*
@ -143,12 +144,11 @@ void esp_sha256_clone( esp_sha_context *dst, const esp_sha_context *src )
*/
void esp_sha256_start( esp_sha_context *ctx, int is224 )
{
esp_sha_acquire_hardware();
ets_sha_init(&ctx->context);
if ( is224 == 0 ) {
/* SHA-256 */
ctx->context_type = SHA2_256;
esp_sha_acquire_hardware();
ets_sha_init(&ctx->context);
} else {
/* SHA-224 is not supported! */
ctx->context_type = SHA_INVALID;
@ -160,7 +160,10 @@ void esp_sha256_start( esp_sha_context *ctx, int is224 )
*/
void esp_sha256_update( esp_sha_context *ctx, const unsigned char *input, size_t ilen )
{
esp_sha_update(ctx, input, ilen, 64);
if( ctx->context_type == SHA2_256 ) {
esp_sha_update(ctx, input, ilen, 64);
}
/* SHA-224 is a no-op */
}
/*
@ -170,12 +173,12 @@ void esp_sha256_finish( esp_sha_context *ctx, unsigned char output[32] )
{
if ( ctx->context_type == SHA2_256 ) {
ets_sha_finish(&ctx->context, ctx->context_type, output);
esp_sha_release_hardware();
} 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();
}
/*
@ -218,9 +221,6 @@ void esp_sha512_clone( esp_sha_context *dst, const esp_sha_context *src )
*/
void esp_sha512_start( esp_sha_context *ctx, int is384 )
{
esp_sha_acquire_hardware();
ets_sha_init(&ctx->context);
if ( is384 == 0 ) {
/* SHA-512 */
ctx->context_type = SHA2_512;
@ -228,6 +228,8 @@ void esp_sha512_start( esp_sha_context *ctx, int is384 )
/* SHA-384 */
ctx->context_type = SHA2_384;
}
esp_sha_acquire_hardware();
ets_sha_init(&ctx->context);
}
/*