pull up 3des implementation from the marc-3des branch

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@11001 dc483132-0cff-0310-8789-dd5450dbe970

1 files changed, 68 insertions, 0 deletions

diff --git a/src/lib/crypto/string_to_key.c b/src/lib/crypto/string_to_key.c
new file mode 100644
index 0000000000..a569e4954c
--- /dev/null
+++ b/src/lib/crypto/string_to_key.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 1998 by the FundsXpress, INC.
+ * 
+ * All rights reserved.
+ * 
+ * Export of this software from the United States of America may require
+ * a specific license from the United States Government.  It is the
+ * responsibility of any person or organization contemplating export to
+ * obtain such a license before exporting.
+ * 
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of FundsXpress. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  FundsXpress makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ * 
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include "k5-int.h"
+#include "etypes.h"
+
+KRB5_DLLIMP krb5_error_code KRB5_CALLCONV
+krb5_c_string_to_key(context, enctype, string, salt, key)
+     krb5_context context;
+     krb5_enctype enctype;
+     krb5_const krb5_data *string;
+     krb5_const krb5_data *salt;
+     krb5_keyblock *key;
+{
+    int i;
+    krb5_error_code ret;
+    struct krb5_enc_provider *enc;
+    size_t keybytes, keylength;
+
+    for (i=0; i<krb5_enctypes_length; i++) {
+	if (krb5_enctypes_list[i].etype == enctype)
+	    break;
+    }
+
+    if (i == krb5_enctypes_length)
+	return(KRB5_BAD_ENCTYPE);
+
+    enc = krb5_enctypes_list[i].enc;
+
+    (*(enc->keysize))(&keybytes, &keylength);
+
+    if ((key->contents = (krb5_octet *) malloc(keylength)) == NULL)
+	return(ENOMEM);
+
+    key->magic = KV5M_KEYBLOCK;
+    key->enctype = enctype;
+    key->length = keylength;
+
+    if (ret = ((*(krb5_enctypes_list[i].str2key))(enc, string, salt, key))) {
+	memset(key->contents, 0, keylength);
+	free(key->contents);
+    }
+
+    return(ret);
+}