1 files changed, 74 insertions, 0 deletions
diff --git a/src/lib/crypto/krb/string_to_key.c b/src/lib/crypto/krb/string_to_key.c
new file mode 100644
index 000000000000..b55ee75d2f34
--- /dev/null
+++ b/src/lib/crypto/krb/string_to_key.c
@@ -0,0 +1,74 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+ * 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 "crypto_int.h"
+
+krb5_error_code KRB5_CALLCONV
+krb5_c_string_to_key(krb5_context context, krb5_enctype enctype,
+                     const krb5_data *string, const krb5_data *salt,
+                     krb5_keyblock *key)
+{
+    return krb5_c_string_to_key_with_params(context, enctype, string, salt,
+                                            NULL, key);
+}
+
+krb5_error_code KRB5_CALLCONV
+krb5_c_string_to_key_with_params(krb5_context context, krb5_enctype enctype,
+                                 const krb5_data *string,
+                                 const krb5_data *salt,
+                                 const krb5_data *params, krb5_keyblock *key)
+{
+    krb5_error_code ret;
+    const struct krb5_keytypes *ktp;
+    size_t keylength;
+
+    ktp = find_enctype(enctype);
+    if (ktp == NULL)
+        return KRB5_BAD_ENCTYPE;
+    keylength = ktp->enc->keylength;
+
+    /* Fail gracefully if someone is using the old AFS string-to-key hack. */
+    if (salt != NULL && salt->length == SALT_TYPE_AFS_LENGTH)
+        return EINVAL;
+
+    key->contents = malloc(keylength);
+    if (key->contents == NULL)
+        return ENOMEM;
+
+    key->magic = KV5M_KEYBLOCK;
+    key->enctype = enctype;
+    key->length = keylength;
+
+    ret = (*ktp->str2key)(ktp, string, salt, params, key);
+    if (ret) {
+        zapfree(key->contents, keylength);
+        key->length = 0;
+        key->contents = NULL;
+    }
+
+    return ret;
+}