fixing a bug in sha1-C and sha256-C (only C-Versions are affected) in setting the...

[avr-crypto-lib.git] / sha256.c

diff --git a/sha256.c b/sha256.c
index 9df0f0497ae44d1d17a21b6b33dfb94e761ff4c9..f310f7c7ec23361073ff93176400113e1265c118 100644 (file)
--- a/sha256.c
+++ b/sha256.c
@@ -164,12 +164,12 @@ void sha256_lastBlock(sha256_ctx_t *state, const void* block, uint16_t length){
        memcpy (&(lb[0]), block, length/8);
        
        /* set the final one bit */
-       if (length & 0x3){ // if we have single bits at the end
+       if (length & 0x7){ // if we have single bits at the end
                lb[length/8] = ((uint8_t*)(block))[length/8];
        } else {
                lb[length/8] = 0;
        }
-       lb[length/8] |= 0x80>>(length & 0x3);
+       lb[length/8] |= 0x80>>(length & 0x7);
        length =(length >> 3) + 1; /* from now on length contains the number of BYTES in lb*/
        /* pad with zeros */
        if (length>64-8){ /* not enouth space for 64bit length value */