zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/ec/ecdsa_vrf.c b/ap/lib/libssl/openssl-1.1.1o/crypto/ec/ecdsa_vrf.c
new file mode 100644
index 0000000..ff597bd
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/ec/ecdsa_vrf.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2002-2020 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 <openssl/ec.h>
+#include "ec_local.h"
+#include <openssl/err.h>
+
+/*-
+ * returns
+ * 1: correct signature
+ * 0: incorrect signature
+ * -1: error
+ */
+int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
+ const ECDSA_SIG *sig, EC_KEY *eckey)
+{
+ if (eckey->meth->verify_sig != NULL)
+ return eckey->meth->verify_sig(dgst, dgst_len, sig, eckey);
+ ECerr(EC_F_ECDSA_DO_VERIFY, EC_R_OPERATION_NOT_SUPPORTED);
+ return -1;
+}
+
+/*-
+ * returns
+ * 1: correct signature
+ * 0: incorrect signature
+ * -1: error
+ */
+int ECDSA_verify(int type, const unsigned char *dgst, int dgst_len,
+ const unsigned char *sigbuf, int sig_len, EC_KEY *eckey)
+{
+ if (eckey->meth->verify != NULL)
+ return eckey->meth->verify(type, dgst, dgst_len, sigbuf, sig_len,
+ eckey);
+ ECerr(EC_F_ECDSA_VERIFY, EC_R_OPERATION_NOT_SUPPORTED);
+ return -1;
+}