1 files changed, 61 insertions, 0 deletions
diff --git a/src/lib/crypto/krb/decrypt_iov.c b/src/lib/crypto/krb/decrypt_iov.c
new file mode 100644
index 0000000..1a98b06
--- /dev/null
+++ b/src/lib/crypto/krb/decrypt_iov.c
@@ -0,0 +1,61 @@
+/*
+ * lib/crypto/encrypt_iov.c
+ *
+ * Copyright 2008 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.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * 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 "etypes.h"
+#include "aead.h"
+
+krb5_error_code KRB5_CALLCONV
+krb5_c_decrypt_iov(krb5_context context,
+		   const krb5_keyblock *key,
+		   krb5_keyusage usage,
+		   const krb5_data *cipher_state,
+		   krb5_crypto_iov *data,
+		   size_t num_data)
+{
+    int i;
+    const struct krb5_keytypes *ktp = NULL;
+
+    for (i = 0; i < krb5_enctypes_length; i++) {
+	if (krb5_enctypes_list[i].etype == key->enctype) {
+	    ktp = &krb5_enctypes_list[i];
+	    break;
+	}
+    }
+
+    if (ktp == NULL || ktp->aead == NULL) {
+	return KRB5_BAD_ENCTYPE;
+    }
+
+    if (krb5int_c_locate_iov(data, num_data, KRB5_CRYPTO_TYPE_STREAM) != NULL) {
+	return krb5int_c_iov_decrypt_stream(ktp->aead, ktp->enc, ktp->hash,
+					    key, usage, cipher_state, data, num_data);
+    }
+
+    return ktp->aead->decrypt_iov(ktp->aead, ktp->enc, ktp->hash,
+				  key, usage, cipher_state, data, num_data);
+}
+