zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/evp/e_null.c b/ap/lib/libssl/openssl-1.1.1o/crypto/evp/e_null.c
new file mode 100644
index 0000000..0725454
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/evp/e_null.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 1995-2016 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/objects.h>
+#include "crypto/evp.h"
+
+static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+static const EVP_CIPHER n_cipher = {
+ NID_undef,
+ 1, 0, 0, 0,
+ null_init_key,
+ null_cipher,
+ NULL,
+ 0,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
+const EVP_CIPHER *EVP_enc_null(void)
+{
+ return &n_cipher;
+}
+
+static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ return 1;
+}
+
+static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ if (in != out)
+ memcpy(out, in, inl);
+ return 1;
+}