On Tue, 3 Jul 2012, Samuel Pitoiset wrote:
+void av_xtea_crypt(AVXTEA *x, uint8_t *dst, const uint8_t *src, int count,
+ uint8_t *iv, int decrypt)
+{
+ int i;
+
+ while (count > 0) {
+ if (decrypt) {
+ xtea_crypt_ecb(x, dst, src, decrypt);
+
+ if (iv) {
+ for (i = 0; i < 8; i++)
+ dst[i] = dst[i] ^ iv[i];
+ memcpy(iv, src, 8);
+ }
+ } else {
+ if (iv) {
+ for (i = 0; i < 8; i++)
+ dst[i] = src[i] ^ iv[i];
+ xtea_crypt_ecb(x, dst, dst, decrypt);
+ } else {
+ xtea_crypt_ecb(x, dst, src, decrypt);
+ }
+
+ if (iv)
+ memcpy(iv, dst, 8);
+ }
Since the crypt_ecb call is within the if, you can just as well move the
memcpy there too.
// Martin
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