diff options
Diffstat (limited to 'cipher/cipher.c')
| -rw-r--r-- | cipher/cipher.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/cipher/cipher.c b/cipher/cipher.c index 6e2bcce08..1f24c6b0e 100644 --- a/cipher/cipher.c +++ b/cipher/cipher.c @@ -225,8 +225,7 @@ do_cfb_encrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nbytes ) if( nbytes <= c->unused ) { /* short enough to be encoded by the remaining XOR mask */ /* XOR the input with the IV and store input into IV */ - c->unused -= nbytes; - for(ivp=c->iv+STD_BLOCKSIZE - c->unused; nbytes; nbytes-- ) + for(ivp=c->iv+STD_BLOCKSIZE - c->unused; nbytes; nbytes--, c->unused-- ) *outbuf++ = (*ivp++ ^= *inbuf++); return; } @@ -271,8 +270,7 @@ do_cfb_decrypt( CIPHER_HANDLE c, byte *outbuf, byte *inbuf, unsigned nbytes ) if( nbytes <= c->unused ) { /* short enough to be encoded by the remaining XOR mask */ /* XOR the input with the IV and store input into IV */ - c->unused -= nbytes; - for(ivp=c->iv+STD_BLOCKSIZE - c->unused; nbytes; nbytes-- ) { + for(ivp=c->iv+STD_BLOCKSIZE - c->unused; nbytes; nbytes--,c->unused--){ temp = *inbuf++; *outbuf++ = *ivp ^ temp; *ivp++ = temp; |