initially checkin

include/cipher.h

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+/* cipher.h
+ *	Copyright (c) 1997 by Werner Koch (dd9jn)
+ *
+ * ATTENTION: This code should not be exported from the United States
+ * nor should it be used their without a license agreement with PKP.
+ * The RSA alorithm is protected by U.S. Patent #4,405,829 which
+ * expires on September 20, 2000!
+ *
+ * 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_CIPHER_H
+#define G10_CIPHER_H
+
+#define DBG_CIPHER cipher_debug_mode
+
+#include "mpi.h"
+#include "../cipher/md5.h"
+#include "../cipher/rmd.h"
+#include "../cipher/rsa.h"
+#include "../cipher/idea.h"
+#include "../cipher/blowfish.h"
+#include "../cipher/gost.h"
+#include "../cipher/elgamal.h"
+
+
+#define CIPHER_ALGO_NONE      0
+#define CIPHER_ALGO_IDEA      1
+#define CIPHER_ALGO_BLOWFISH 42
+#define CIPHER_ALGO_GOST     43
+
+#define PUBKEY_ALGO_RSA       1
+#define PUBKEY_ALGO_ELGAMAL  42
+
+#define DIGEST_ALGO_MD5       1
+#define DIGEST_ALGO_RMD160   42
+
+#define DEFAULT_CIPHER_ALGO  CIPHER_ALGO_BLOWFISH
+#define DEFAULT_PUBKEY_ALGO  PUBKEY_ALGO_RSA
+#define DEFAULT_DIGEST_ALGO  DIGEST_ALGO_RMD160
+
+typedef struct {
+    int algo;
+    int keylen;
+    byte key[20]; /* this is the largest used keylen */
+} DEK;
+
+typedef struct {
+    int algo;	/* digest algo */
+    union {
+      MD5HANDLE md5;
+      RMDHANDLE rmd;
+    } u;
+} MD_HANDLE;
+
+
+int cipher_debug_mode;
+
+/*-- random.c --*/
+void randomize_buffer( byte *buffer, size_t length, int level );
+byte get_random_byte( int level );
+
+/*-- smallprime.c --*/
+extern ushort small_prime_numbers[];
+
+/*-- primegen.c --*/
+MPI generate_random_prime( unsigned nbits );
+
+/*-- seskey.c --*/
+void make_session_key( DEK *dek );
+MPI encode_session_key( DEK *dek, unsigned nbits );
+
+
+#endif /*G10_CIPHER_H*/