1 files changed, 51 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/cmac/cm_ameth.c b/openssl-1.1.0h/crypto/cmac/cm_ameth.c
new file mode 100644
index 0000000..a58454a
--- /dev/null
+++ b/openssl-1.1.0h/crypto/cmac/cm_ameth.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/evp.h>
+#include <openssl/cmac.h>
+#include "internal/asn1_int.h"
+
+/*
+ * CMAC "ASN1" method. This is just here to indicate the maximum CMAC output
+ * length and to free up a CMAC key.
+ */
+
+static int cmac_size(const EVP_PKEY *pkey)
+{
+    return EVP_MAX_BLOCK_LENGTH;
+}
+
+static void cmac_key_free(EVP_PKEY *pkey)
+{
+    CMAC_CTX *cmctx = EVP_PKEY_get0(pkey);
+    CMAC_CTX_free(cmctx);
+}
+
+const EVP_PKEY_ASN1_METHOD cmac_asn1_meth = {
+    EVP_PKEY_CMAC,
+    EVP_PKEY_CMAC,
+    0,
+
+    "CMAC",
+    "OpenSSL CMAC method",
+
+    0, 0, 0, 0,
+
+    0, 0, 0,
+
+    cmac_size,
+    0, 0,
+    0, 0, 0, 0, 0, 0, 0,
+
+    cmac_key_free,
+    0,
+    0, 0
+};