Minor improvement and man pages for HMAC

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 6 insertions, 9 deletions

diff --git a/hmac_update.c b/hmac_update.c
index 7f4cef3..245c7b1 100644
--- a/hmac_update.c
+++ b/hmac_update.c
@@ -5,22 +5,19 @@
 /**
  * Feed data into the HMAC algorithm
  * 
- * @param   state  The state of the algorithm
- * @param   data   Data to feed into the algorithm
- * @param   n      The number of bytes to feed into the
- *                 algorithm, this must be a multiple of 8
- * @return         Zero on success, -1 on error
+ * @param  state  The state of the algorithm
+ * @param  data   Data to feed into the algorithm
+ * @param  n      The number of bytes to feed into the
+ *                algorithm, this must be a multiple of 8
  */
-int
+void
 libsha2_hmac_update(struct libsha2_hmac_state *restrict state, const void *restrict data, size_t n)
 {
 	if (!state->inited) {
-		if (libsha2_init(&state->sha2_state, state->sha2_state.algorithm))
-			return -1;
+		libsha2_init(&state->sha2_state, state->sha2_state.algorithm);
 		libsha2_update(&state->sha2_state, state->ipad, state->sha2_state.chunk_size * 8);
 		state->inited = 1;
 	}
 
 	libsha2_update(&state->sha2_state, data, n);
-	return 0;
 }