X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=tfdef.h;h=0facb028e2999dc74a1c804ba5cd9911c08e6ab4;hb=427cccc02bf41be626fb70408e172d41fb1176b4;hp=72c713df4764b331452e311b7c9380c3ec43cf2b;hpb=f402e6aa2dd18138ec26e9bfb340dae294637aec;p=tfcrypt.git

diff --git a/tfdef.h b/tfdef.h
index 72c713d..0facb02 100644
--- a/tfdef.h
+++ b/tfdef.h
@@ -92,6 +92,18 @@ static inline void data_to_words(void *p, size_t l)
 #endif
 }
 
+static inline void xor_block(void *dst, const void *src, size_t sz)
+{
+	const size_t *sx = (const size_t *)src;
+	const TF_BYTE_TYPE *usx = (const TF_BYTE_TYPE *)src;
+	size_t *dx = (size_t *)dst;
+	TF_BYTE_TYPE *udx = (TF_BYTE_TYPE *)dst;
+	size_t sl = sz;
+
+	for (sl = 0; sl < (sz / sizeof(size_t)); sl++) dx[sl] ^= sx[sl];
+	if (sz - (sl * sizeof(size_t))) for (sl *= sizeof(size_t); sl < sz; sl++) udx[sl] ^= usx[sl];
+}
+
 static inline void ctr_inc(TF_UNIT_TYPE *x, size_t xl)
 {
 	size_t z;
@@ -137,7 +149,5 @@ void tf_cbc_encrypt(const void *key, void *iv, void *out, const void *in, size_t
 void tf_cbc_decrypt(const void *key, void *iv, void *out, const void *in, size_t sz);
 void tf_xts_encrypt(const void *keyx, const void *keyz, void *ctr, void *out, const void *in, size_t sz, size_t bpi);
 void tf_xts_decrypt(const void *keyx, const void *keyz, void *ctr, void *out, const void *in, size_t sz, size_t bpi);
-void tf_ocb_encrypt(const void *key, void *ctr, void *out, void *tag, const void *in, size_t sz, size_t bpi);
-void tf_ocb_decrypt(const void *key, void *ctr, void *out, void *tag, const void *in, size_t sz, size_t bpi);
 
 #endif