patchlevel 2

1 files changed, 152 insertions, 0 deletions

diff --git a/cipher/misc.c b/cipher/misc.c
new file mode 100644
index 000000000..cd0d31a49
--- /dev/null
+++ b/cipher/misc.c
@@ -0,0 +1,152 @@
+/* misc.c  -  utility functions
+ *	Copyright (c) 1997 by Werner Koch (dd9jn)
+ *
+ * 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
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "util.h"
+#include "cipher.h"
+
+
+static struct { const char *name; int algo;} cipher_names[] = {
+    { "IDEA",        CIPHER_ALGO_IDEA        },
+    { "3DES",        CIPHER_ALGO_3DES        },
+    { "CAST",        CIPHER_ALGO_CAST        },
+    { "BLOWFISH128", CIPHER_ALGO_BLOWFISH128 },
+    { "ROT_N",       CIPHER_ALGO_ROT_N       },
+    { "SAFER_SK128", CIPHER_ALGO_SAFER_SK128 },
+    { "DES_SK",      CIPHER_ALGO_DES_SK      },
+    { "BLOWFISH",    CIPHER_ALGO_BLOWFISH    },
+    { "GOST",        CIPHER_ALGO_GOST        },
+    {NULL} };
+
+static struct { const char *name; int algo;} pubkey_names[] = {
+    { "RSA",           PUBKEY_ALGO_RSA     },
+    { "RSA-E",         PUBKEY_ALGO_RSA_E   },
+    { "RSA-S",         PUBKEY_ALGO_RSA_S   },
+    { "ELGAMAL",       PUBKEY_ALGO_ELGAMAL },
+    { "ELG",           PUBKEY_ALGO_ELGAMAL },
+    { "DSA",           PUBKEY_ALGO_DSA     },
+    {NULL} };
+
+static struct { const char *name; int algo;} digest_names[] = {
+    { "MD5",           DIGEST_ALGO_MD5    },
+    { "SHA1",          DIGEST_ALGO_SHA1   },
+    { "SHA-1",         DIGEST_ALGO_SHA1   },
+    { "RMD160",        DIGEST_ALGO_RMD160 },
+    { "RMD-160",       DIGEST_ALGO_RMD160 },
+    { "RIPE-MD-160",   DIGEST_ALGO_RMD160 },
+    {NULL} };
+
+
+/****************
+ * Map a string to the cipher algo
+ */
+int
+string_to_cipher_algo( const char *string )
+{
+    int i;
+    const char *s;
+
+    for(i=0; s=cipher_names[i].name; i++ )
+	if( !stricmp( s, string ) )
+	    return cipher_names[i].algo;
+    return 0;
+}
+
+
+/****************
+ * Map a string to the pubkey algo
+ */
+int
+string_to_pubkey_algo( const char *string )
+{
+    int i;
+    const char *s;
+
+    for(i=0; s=pubkey_names[i].name; i++ )
+	if( !stricmp( s, string ) )
+	    return pubkey_names[i].algo;
+    return 0;
+}
+
+/****************
+ * Map a string to the digest algo
+ */
+int
+string_to_digest_algo( const char *string )
+{
+    int i;
+    const char *s;
+
+    for(i=0; s=digest_names[i].name; i++ )
+	if( !stricmp( s, string ) )
+	    return digest_names[i].algo;
+    return 0;
+}
+
+/****************
+ * Return 0 if the cipher algo is available
+ */
+int
+check_cipher_algo( int algo )
+{
+    switch( algo ) {
+      case CIPHER_ALGO_BLOWFISH128:
+      case CIPHER_ALGO_BLOWFISH:
+	return 0;
+      default:
+	return G10ERR_CIPHER_ALGO;
+    }
+}
+
+
+int
+check_pubkey_algo( int algo )
+{
+    switch( algo ) {
+      case PUBKEY_ALGO_ELGAMAL:
+    #ifdef HAVE_RSA_CIPHER
+      case PUBKEY_ALGO_RSA:
+    #endif
+	return 0;
+      default:
+	return G10ERR_PUBKEY_ALGO;
+    }
+}
+
+
+int
+check_digest_algo( int algo )
+{
+    switch( algo ) {
+      case DIGEST_ALGO_MD5:
+      case DIGEST_ALGO_RMD160:
+      case DIGEST_ALGO_SHA1:
+	return 0;
+      default:
+	return G10ERR_DIGEST_ALGO;
+    }
+}
+
+
+