--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtomcrypt/tests/modes_test.c	Fri Feb 09 21:44:05 2018 +0800
@@ -0,0 +1,130 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+/* test CFB/OFB/CBC modes */
+#include <tomcrypt_test.h>
+
+int modes_test(void)
+{
+   int ret = CRYPT_NOP;
+#ifdef LTC_CBC_MODE
+   symmetric_CBC cbc;
+#endif
+#ifdef LTC_CFB_MODE
+   symmetric_CFB cfb;
+#endif
+#ifdef LTC_OFB_MODE
+   symmetric_OFB ofb;
+#endif
+#if defined(LTC_CBC_MODE) || defined(LTC_CFB_MODE) || defined(LTC_OFB_MODE)
+   unsigned char pt[64], ct[64], tmp[64], key[16], iv[16], iv2[16];
+   int cipher_idx;
+   unsigned long l;
+
+   /* make a random pt, key and iv */
+   yarrow_read(pt,  64, &yarrow_prng);
+   yarrow_read(key, 16, &yarrow_prng);
+   yarrow_read(iv,  16, &yarrow_prng);
+
+   /* get idx of AES handy */
+   cipher_idx = find_cipher("aes");
+   if (cipher_idx == -1) {
+      fprintf(stderr, "test requires AES");
+      return 1;
+   }
+#endif
+
+#ifdef LTC_F8_MODE
+   DO(ret = f8_test_mode());
+#endif
+
+#ifdef LTC_LRW_MODE
+   DO(ret = lrw_test());
+#endif
+
+#ifdef LTC_CBC_MODE
+   /* test CBC mode */
+   /* encode the block */
+   DO(ret = cbc_start(cipher_idx, iv, key, 16, 0, &cbc));
+   l = sizeof(iv2);
+   DO(ret = cbc_getiv(iv2, &l, &cbc));
+   if (l != 16 || memcmp(iv2, iv, 16)) {
+      fprintf(stderr, "cbc_getiv failed");
+      return 1;
+   }
+   DO(ret = cbc_encrypt(pt, ct, 64, &cbc));
+
+   /* decode the block */
+   DO(ret = cbc_setiv(iv2, l, &cbc));
+   zeromem(tmp, sizeof(tmp));
+   DO(ret = cbc_decrypt(ct, tmp, 64, &cbc));
+   if (memcmp(tmp, pt, 64) != 0) {
+      fprintf(stderr, "CBC failed");
+      return 1;
+   }
+#endif
+
+#ifdef LTC_CFB_MODE
+   /* test CFB mode */
+   /* encode the block */
+   DO(ret = cfb_start(cipher_idx, iv, key, 16, 0, &cfb));
+   l = sizeof(iv2);
+   DO(ret = cfb_getiv(iv2, &l, &cfb));
+   /* note we don't memcmp iv2/iv since cfb_start processes the IV for the first block */
+   if (l != 16) {
+      fprintf(stderr, "cfb_getiv failed");
+      return 1;
+   }
+   DO(ret = cfb_encrypt(pt, ct, 64, &cfb));
+
+   /* decode the block */
+   DO(ret = cfb_setiv(iv, l, &cfb));
+   zeromem(tmp, sizeof(tmp));
+   DO(ret = cfb_decrypt(ct, tmp, 64, &cfb));
+   if (memcmp(tmp, pt, 64) != 0) {
+      fprintf(stderr, "CFB failed");
+      return 1;
+   }
+#endif
+
+#ifdef LTC_OFB_MODE
+   /* test OFB mode */
+   /* encode the block */
+   DO(ret = ofb_start(cipher_idx, iv, key, 16, 0, &ofb));
+   l = sizeof(iv2);
+   DO(ret = ofb_getiv(iv2, &l, &ofb));
+   if (l != 16 || memcmp(iv2, iv, 16)) {
+      fprintf(stderr, "ofb_getiv failed");
+      return 1;
+   }
+   DO(ret = ofb_encrypt(pt, ct, 64, &ofb));
+
+   /* decode the block */
+   DO(ret = ofb_setiv(iv2, l, &ofb));
+   zeromem(tmp, sizeof(tmp));
+   DO(ret = ofb_decrypt(ct, tmp, 64, &ofb));
+   if (memcmp(tmp, pt, 64) != 0) {
+      fprintf(stderr, "OFB failed");
+      return 1;
+   }
+#endif
+
+#if defined(LTC_CTR_MODE) && defined(LTC_RIJNDAEL)
+   DO(ret = ctr_test());
+#endif
+
+#ifdef LTC_XTS_MODE
+   DO(ret = xts_test());
+#endif
+
+   return 0;
+}
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */