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Do not clear the padding (for alignment) section of a blake2b state

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So that it's acceptable for an application to provide a state that
doesn't include padding.
This commit is contained in:
Frank Denis 2017-08-26 08:19:58 +02:00
parent b503d75e43
commit 394e21884c
1 changed files with 3 additions and 1 deletions
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4
src/libsodium/crypto_generichash/blake2b/ref/blake2b-ref.c
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@ -14,6 +14,7 @@
*/ */
#include <assert.h> #include <assert.h>
#include <stddef.h>
#include <stdint.h> #include <stdint.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
@ -160,11 +161,12 @@ static inline int
blake2b_init0(blake2b_state *S) blake2b_init0(blake2b_state *S)
{ {
int i; int i;
memset(S, 0, sizeof(blake2b_state));
for (i = 0; i < 8; i++) { for (i = 0; i < 8; i++) {
S->h[i] = blake2b_IV[i]; S->h[i] = blake2b_IV[i];
} }
memset(S->t, 0, offsetof(blake2b_state, last_node) + sizeof(S->last_node)
- offsetof(blake2b_state, t));
return 0; return 0;
} }