1 files changed, 51 insertions, 0 deletions
diff --git a/cipher/idea.h b/cipher/idea.h
new file mode 100644
index 000000000..efebf5a56
--- /dev/null
+++ b/cipher/idea.h
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+/* idea.h
+ *	Copyright (c) 1997 by Werner Koch (dd9jn)
+ *
+ * ATTENTION: This code patented and needs a license for any commercial use.
+ *
+ * This file is part of G10.
+ *
+ * G10 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.
+ *
+ * G10 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+#ifndef G10_IDEA_H
+#define G10_IDEA_H
+
+#include "types.h"
+
+#define IDEA_KEYSIZE 16
+#define IDEA_BLOCKSIZE 8
+#define IDEA_ROUNDS 8
+#define IDEA_KEYLEN (6*IDEA_ROUNDS+4)
+
+typedef struct {
+    u16 ek[IDEA_KEYLEN];
+    u16 dk[IDEA_KEYLEN];
+    byte iv[IDEA_BLOCKSIZE];
+    byte lastcipher[IDEA_BLOCKSIZE];
+    int  nleft;
+} IDEA_context;
+
+void idea_setkey( IDEA_context *c, byte *key );
+void idea_setiv( IDEA_context *c, byte *iv );
+void idea_encode( IDEA_context *c, byte *out, byte *in, unsigned nblocks );
+void idea_decode( IDEA_context *c, byte *out, byte *in, unsigned nblocks );
+void idea_encode_cfb( IDEA_context *c, byte *outbuf,
+				       byte *inbuf, unsigned nbytes);
+void idea_decode_cfb( IDEA_context *c, byte *outbuf,
+				       byte *inbuf, unsigned nbytes);
+void idea_sync_cfb( IDEA_context *c );
+
+
+#endif /*G10_IDEA_H*/