zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/des/pcbc_enc.c b/ap/lib/libssl/openssl-1.1.1o/crypto/des/pcbc_enc.c
new file mode 100644
index 0000000..3490592
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/des/pcbc_enc.c
@@ -0,0 +1,66 @@
+/*
+ * 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 "des_local.h"
+
+void DES_pcbc_encrypt(const unsigned char *input, unsigned char *output,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int enc)
+{
+ register DES_LONG sin0, sin1, xor0, xor1, tout0, tout1;
+ DES_LONG tin[2];
+ const unsigned char *in;
+ unsigned char *out, *iv;
+
+ in = input;
+ out = output;
+ iv = &(*ivec)[0];
+
+ if (enc) {
+ c2l(iv, xor0);
+ c2l(iv, xor1);
+ for (; length > 0; length -= 8) {
+ if (length >= 8) {
+ c2l(in, sin0);
+ c2l(in, sin1);
+ } else
+ c2ln(in, sin0, sin1, length);
+ tin[0] = sin0 ^ xor0;
+ tin[1] = sin1 ^ xor1;
+ DES_encrypt1((DES_LONG *)tin, schedule, DES_ENCRYPT);
+ tout0 = tin[0];
+ tout1 = tin[1];
+ xor0 = sin0 ^ tout0;
+ xor1 = sin1 ^ tout1;
+ l2c(tout0, out);
+ l2c(tout1, out);
+ }
+ } else {
+ c2l(iv, xor0);
+ c2l(iv, xor1);
+ for (; length > 0; length -= 8) {
+ c2l(in, sin0);
+ c2l(in, sin1);
+ tin[0] = sin0;
+ tin[1] = sin1;
+ DES_encrypt1((DES_LONG *)tin, schedule, DES_DECRYPT);
+ tout0 = tin[0] ^ xor0;
+ tout1 = tin[1] ^ xor1;
+ if (length >= 8) {
+ l2c(tout0, out);
+ l2c(tout1, out);
+ } else
+ l2cn(tout0, tout1, out, length);
+ xor0 = tout0 ^ sin0;
+ xor1 = tout1 ^ sin1;
+ }
+ }
+ tin[0] = tin[1] = 0;
+ sin0 = sin1 = xor0 = xor1 = tout0 = tout1 = 0;
+}