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Fix use case with size = 0 (md5_selftest #1)

pull/4889/head
adustm 2017-05-15 13:54:09 +02:00 committed by adbridge
parent 2d83ea6136
commit 77ac355864
1 changed files with 9 additions and 0 deletions
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9
features/mbedtls/targets/TARGET_STM/md5_alt.c
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@ -86,6 +86,15 @@ void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, s
unsigned char i=0; unsigned char i=0;
int currentlen = ilen; int currentlen = ilen;
/* store mechanism to handle 64 bytes per 64 bytes */ /* store mechanism to handle 64 bytes per 64 bytes */
if (currentlen == 0){ // change HW status is size if 0
if(ctx->hhash_md5.Phase == HAL_HASH_PHASE_READY)
{
/* Select the MD5 mode and reset the HASH processor core, so that the HASH will be ready to compute
the message digest of a new message */
HASH->CR |= HASH_ALGOSELECTION_MD5 | HASH_CR_INIT;
}
ctx->hhash_md5.Phase = HAL_HASH_PHASE_PROCESS;
}
while ((currentlen+ctx->sbuf_len) >=64) { while ((currentlen+ctx->sbuf_len) >=64) {
if (ctx->sbuf_len ==0) { /* straight forward */ if (ctx->sbuf_len ==0) { /* straight forward */
mbedtls_md5_process(ctx, input+(i*64)); mbedtls_md5_process(ctx, input+(i*64));