zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/modes/xts128.c b/ap/lib/libssl/openssl-1.1.1o/crypto/modes/xts128.c
new file mode 100644
index 0000000..fe1626c
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/modes/xts128.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright 2011-2020 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/crypto.h>
+#include "modes_local.h"
+#include <string.h>
+
+#ifndef STRICT_ALIGNMENT
+# ifdef __GNUC__
+typedef u64 u64_a1 __attribute((__aligned__(1)));
+# else
+typedef u64 u64_a1;
+# endif
+#endif
+
+int CRYPTO_xts128_encrypt(const XTS128_CONTEXT *ctx,
+ const unsigned char iv[16],
+ const unsigned char *inp, unsigned char *out,
+ size_t len, int enc)
+{
+ const union {
+ long one;
+ char little;
+ } is_endian = {
+ 1
+ };
+ union {
+ u64 u[2];
+ u32 d[4];
+ u8 c[16];
+ } tweak, scratch;
+ unsigned int i;
+
+ if (len < 16)
+ return -1;
+
+ memcpy(tweak.c, iv, 16);
+
+ (*ctx->block2) (tweak.c, tweak.c, ctx->key2);
+
+ if (!enc && (len % 16))
+ len -= 16;
+
+ while (len >= 16) {
+#if defined(STRICT_ALIGNMENT)
+ memcpy(scratch.c, inp, 16);
+ scratch.u[0] ^= tweak.u[0];
+ scratch.u[1] ^= tweak.u[1];
+#else
+ scratch.u[0] = ((u64_a1 *)inp)[0] ^ tweak.u[0];
+ scratch.u[1] = ((u64_a1 *)inp)[1] ^ tweak.u[1];
+#endif
+ (*ctx->block1) (scratch.c, scratch.c, ctx->key1);
+#if defined(STRICT_ALIGNMENT)
+ scratch.u[0] ^= tweak.u[0];
+ scratch.u[1] ^= tweak.u[1];
+ memcpy(out, scratch.c, 16);
+#else
+ ((u64_a1 *)out)[0] = scratch.u[0] ^= tweak.u[0];
+ ((u64_a1 *)out)[1] = scratch.u[1] ^= tweak.u[1];
+#endif
+ inp += 16;
+ out += 16;
+ len -= 16;
+
+ if (len == 0)
+ return 0;
+
+ if (is_endian.little) {
+ unsigned int carry, res;
+
+ res = 0x87 & (((int)tweak.d[3]) >> 31);
+ carry = (unsigned int)(tweak.u[0] >> 63);
+ tweak.u[0] = (tweak.u[0] << 1) ^ res;
+ tweak.u[1] = (tweak.u[1] << 1) | carry;
+ } else {
+ size_t c;
+
+ for (c = 0, i = 0; i < 16; ++i) {
+ /*
+ * + substitutes for |, because c is 1 bit
+ */
+ c += ((size_t)tweak.c[i]) << 1;
+ tweak.c[i] = (u8)c;
+ c = c >> 8;
+ }
+ tweak.c[0] ^= (u8)(0x87 & (0 - c));
+ }
+ }
+ if (enc) {
+ for (i = 0; i < len; ++i) {
+ u8 c = inp[i];
+ out[i] = scratch.c[i];
+ scratch.c[i] = c;
+ }
+ scratch.u[0] ^= tweak.u[0];
+ scratch.u[1] ^= tweak.u[1];
+ (*ctx->block1) (scratch.c, scratch.c, ctx->key1);
+ scratch.u[0] ^= tweak.u[0];
+ scratch.u[1] ^= tweak.u[1];
+ memcpy(out - 16, scratch.c, 16);
+ } else {
+ union {
+ u64 u[2];
+ u8 c[16];
+ } tweak1;
+
+ if (is_endian.little) {
+ unsigned int carry, res;
+
+ res = 0x87 & (((int)tweak.d[3]) >> 31);
+ carry = (unsigned int)(tweak.u[0] >> 63);
+ tweak1.u[0] = (tweak.u[0] << 1) ^ res;
+ tweak1.u[1] = (tweak.u[1] << 1) | carry;
+ } else {
+ size_t c;
+
+ for (c = 0, i = 0; i < 16; ++i) {
+ /*
+ * + substitutes for |, because c is 1 bit
+ */
+ c += ((size_t)tweak.c[i]) << 1;
+ tweak1.c[i] = (u8)c;
+ c = c >> 8;
+ }
+ tweak1.c[0] ^= (u8)(0x87 & (0 - c));
+ }
+#if defined(STRICT_ALIGNMENT)
+ memcpy(scratch.c, inp, 16);
+ scratch.u[0] ^= tweak1.u[0];
+ scratch.u[1] ^= tweak1.u[1];
+#else
+ scratch.u[0] = ((u64_a1 *)inp)[0] ^ tweak1.u[0];
+ scratch.u[1] = ((u64_a1 *)inp)[1] ^ tweak1.u[1];
+#endif
+ (*ctx->block1) (scratch.c, scratch.c, ctx->key1);
+ scratch.u[0] ^= tweak1.u[0];
+ scratch.u[1] ^= tweak1.u[1];
+
+ for (i = 0; i < len; ++i) {
+ u8 c = inp[16 + i];
+ out[16 + i] = scratch.c[i];
+ scratch.c[i] = c;
+ }
+ scratch.u[0] ^= tweak.u[0];
+ scratch.u[1] ^= tweak.u[1];
+ (*ctx->block1) (scratch.c, scratch.c, ctx->key1);
+#if defined(STRICT_ALIGNMENT)
+ scratch.u[0] ^= tweak.u[0];
+ scratch.u[1] ^= tweak.u[1];
+ memcpy(out, scratch.c, 16);
+#else
+ ((u64_a1 *)out)[0] = scratch.u[0] ^ tweak.u[0];
+ ((u64_a1 *)out)[1] = scratch.u[1] ^ tweak.u[1];
+#endif
+ }
+
+ return 0;
+}