Added support for ENCTYPE_DES3_CBC_RAW (gssapi)

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@7732 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/lib/crypto/des3_raw.c b/src/lib/crypto/des3_raw.c
new file mode 100644 (file)
index 0000000..aa7a4c9
--- /dev/null
+++ b/src/lib/crypto/des3_raw.c
@@ -0,0 +1,104 @@
+/*
+ * lib/crypto/des3_raw.c
+ *
+ * Copyright 1996 by the Massachusetts Institute of Technology.
+ * 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 M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include "k5-int.h"
+#include "des_int.h"
+
+krb5_error_code mit_des3_raw_encrypt_func
+    PROTOTYPE(( krb5_const_pointer, krb5_pointer, const size_t,
+               krb5_encrypt_block *, krb5_pointer ));
+
+krb5_error_code mit_des3_raw_decrypt_func
+    PROTOTYPE(( krb5_const_pointer, krb5_pointer, const size_t,
+               krb5_encrypt_block *, krb5_pointer ));
+
+static krb5_cryptosystem_entry mit_des3_raw_cryptosystem_entry = {
+    0,
+    mit_des3_raw_encrypt_func,
+    mit_des3_raw_decrypt_func,
+    mit_des3_process_key,
+    mit_des_finish_key,
+    mit_des3_string_to_key,
+    mit_des_init_random_key,
+    mit_des_finish_random_key,
+    mit_des3_random_key,
+    sizeof(mit_des_cblock),
+    0,
+    sizeof(mit_des3_cblock),
+    ENCTYPE_DES3_CBC_RAW
+    };
+
+krb5_cs_table_entry krb5_des3_raw_cst_entry = {
+    0,
+    &mit_des3_raw_cryptosystem_entry,
+    0
+    };
+
+krb5_error_code
+mit_des3_raw_decrypt_func(in, out, size, key, ivec)
+    krb5_const_pointer in;
+    krb5_pointer out;
+    const size_t size;
+    krb5_encrypt_block * key;
+    krb5_pointer ivec;
+{
+    return (mit_des3_cbc_encrypt((const mit_des_cblock *) in, 
+                                out, 
+                                size, 
+                                (struct mit_des_ks_struct *)key->priv,
+                                ((struct mit_des_ks_struct *)key->priv) + 1,
+                                ((struct mit_des_ks_struct *)key->priv) + 2,
+                                ivec ? ivec : (krb5_pointer)key->key->contents,
+                                MIT_DES_DECRYPT));
+}
+
+krb5_error_code
+mit_des3_raw_encrypt_func(in, out, size, key, ivec)
+    krb5_const_pointer in;
+    krb5_pointer out;
+    const size_t size;
+    krb5_encrypt_block * key;
+    krb5_pointer ivec;
+{
+   int sumsize;
+
+   /* round up to des block size */
+
+   sumsize =  krb5_roundup(size, sizeof(mit_des_cblock));
+
+   /* assemble crypto input into the output area, then encrypt in place. */
+
+   memset((char *)out, 0, sumsize);
+   memcpy((char *)out, (char *)in, size);
+
+    /* We depend here on the ability of this DES implementation to
+       encrypt plaintext to ciphertext in-place. */
+    return (mit_des3_cbc_encrypt(out, 
+                                out, 
+                                sumsize, 
+                                (struct mit_des_ks_struct *)key->priv,
+                                ((struct mit_des_ks_struct *)key->priv) + 1,
+                                ((struct mit_des_ks_struct *)key->priv) + 2,
+                                ivec ? ivec : (krb5_pointer)key->key->contents,
+                                MIT_DES_ENCRYPT));
+}