X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=tfe.c;h=eea50d36e46c45cc81b8e5ce0ac7be4bc8164c10;hb=3699c1f4ba441ce91f5fa674e73c3c4fa0264578;hp=127d063cd26d71fe0f96055ae30839ed0a80d603;hpb=f761a53231d1a023e2d3e5efcc5591b04a34f98a;p=tfcrypt.git

diff --git a/tfe.c b/tfe.c
index 127d063..eea50d3 100644
--- a/tfe.c
+++ b/tfe.c
@@ -49,9 +49,13 @@ void tfe_emit(void *dst, size_t szdst, struct tfe_stream *tfe)
 	}
 
 	if (sz) {
+		TF_UNIT_TYPE t[TF_NR_BLOCK_UNITS];
+
 		tf_encrypt_rawblk(tfe->iv, tfe->iv, tfe->key);
-		memcpy(udst, tfe->iv, sz);
-		data_to_words(udst, TF_BLOCK_SIZE);
+		memcpy(t, tfe->iv, TF_BLOCK_SIZE);
+		data_to_words(t, TF_BLOCK_SIZE);
+		memcpy(udst, t, sz);
+		memset(t, 0, TF_BLOCK_SIZE);
 		udst = (TF_BYTE_TYPE *)tfe->iv;
 		tfe->carry_bytes = TF_BLOCK_SIZE-sz;
 		memcpy(tfe->carry_block, udst+sz, tfe->carry_bytes);