Diff: wolfssl/wolfcrypt/idea.h

Revision:

13:80fb167dafdf

Parent:

3:6f956bdb3073

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfssl/wolfcrypt/idea.h	Tue May 30 06:16:19 2017 +0000
@@ -0,0 +1,68 @@
+/* idea.h
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+#ifndef WOLF_CRYPT_IDEA_H
+#define WOLF_CRYPT_IDEA_H
+
+#include <wolfssl/wolfcrypt/types.h>
+
+#ifdef HAVE_IDEA
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+enum {
+    IDEA_MODULO     = 0x10001,             /* 2^16+1 */
+    IDEA_2EXP16     = 0x10000,             /* 2^16 */
+    IDEA_MASK       = 0xFFFF,              /* 16 bits set to one */
+    IDEA_ROUNDS     = 8,                   /* number of rounds for IDEA */
+    IDEA_SK_NUM     = (6*IDEA_ROUNDS + 4), /* number of subkeys */
+    IDEA_KEY_SIZE   = 16,                  /* size of key in bytes */
+    IDEA_BLOCK_SIZE = 8,                   /* size of IDEA blocks in bytes */
+    IDEA_IV_SIZE    = 8,                   /* size of IDEA IV in bytes */
+    IDEA_ENCRYPTION = 0,
+    IDEA_DECRYPTION = 1
+};
+
+/* IDEA encryption and decryption */
+typedef struct Idea {
+    word32  reg[IDEA_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */
+    word32  tmp[IDEA_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */
+    word16  skey[IDEA_SK_NUM]; /* 832 bits expanded key */
+} Idea;
+
+WOLFSSL_API int wc_IdeaSetKey(Idea *idea, const byte* key, word16 keySz,
+                              const byte *iv, int dir);
+WOLFSSL_API int wc_IdeaSetIV(Idea *idea, const byte* iv);
+WOLFSSL_API void wc_IdeaCipher(Idea *idea, byte* out, const byte* in);
+WOLFSSL_API int wc_IdeaCbcEncrypt(Idea *idea, byte* out,
+                                  const byte* in, word32 len);
+WOLFSSL_API int wc_IdeaCbcDecrypt(Idea *idea, byte* out,
+                                  const byte* in, word32 len);
+#ifdef __cplusplus
+    } /* extern "C" */
+#endif
+
+#endif /* HAVE_IDEA */
+#endif /* WOLF_CRYPT_IDEA_H */
+