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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/crypto/xts.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/crypto/xts.c')
-rw-r--r--qemu/crypto/xts.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/qemu/crypto/xts.c b/qemu/crypto/xts.c
deleted file mode 100644
index 95212341f..000000000
--- a/qemu/crypto/xts.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- * QEMU Crypto XTS cipher mode
- *
- * Copyright (c) 2015-2016 Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- *
- * This code is originally derived from public domain / WTFPL code in
- * LibTomCrypt crytographic library http://libtom.org. The XTS code
- * was donated by Elliptic Semiconductor Inc (www.ellipticsemi.com)
- * to the LibTom Projects
- *
- */
-
-#include "qemu/osdep.h"
-#include "crypto/xts.h"
-
-static void xts_mult_x(uint8_t *I)
-{
- int x;
- uint8_t t, tt;
-
- for (x = t = 0; x < 16; x++) {
- tt = I[x] >> 7;
- I[x] = ((I[x] << 1) | t) & 0xFF;
- t = tt;
- }
- if (tt) {
- I[0] ^= 0x87;
- }
-}
-
-
-/**
- * xts_tweak_uncrypt:
- * @param ctxt: the cipher context
- * @param func: the cipher function
- * @src: buffer providing the cipher text of XTS_BLOCK_SIZE bytes
- * @dst: buffer to output the plain text of XTS_BLOCK_SIZE bytes
- * @iv: the initialization vector tweak of XTS_BLOCK_SIZE bytes
- *
- * Decrypt data with a tweak
- */
-static void xts_tweak_decrypt(const void *ctx,
- xts_cipher_func *func,
- const uint8_t *src,
- uint8_t *dst,
- uint8_t *iv)
-{
- unsigned long x;
-
- /* tweak encrypt block i */
- for (x = 0; x < XTS_BLOCK_SIZE; x++) {
- dst[x] = src[x] ^ iv[x];
- }
-
- func(ctx, XTS_BLOCK_SIZE, dst, dst);
-
- for (x = 0; x < XTS_BLOCK_SIZE; x++) {
- dst[x] = dst[x] ^ iv[x];
- }
-
- /* LFSR the tweak */
- xts_mult_x(iv);
-}
-
-
-void xts_decrypt(const void *datactx,
- const void *tweakctx,
- xts_cipher_func *encfunc,
- xts_cipher_func *decfunc,
- uint8_t *iv,
- size_t length,
- uint8_t *dst,
- const uint8_t *src)
-{
- uint8_t PP[XTS_BLOCK_SIZE], CC[XTS_BLOCK_SIZE], T[XTS_BLOCK_SIZE];
- unsigned long i, m, mo, lim;
-
- /* get number of blocks */
- m = length >> 4;
- mo = length & 15;
-
- /* must have at least one full block */
- g_assert(m != 0);
-
- if (mo == 0) {
- lim = m;
- } else {
- lim = m - 1;
- }
-
- /* encrypt the iv */
- encfunc(tweakctx, XTS_BLOCK_SIZE, T, iv);
-
- for (i = 0; i < lim; i++) {
- xts_tweak_decrypt(datactx, decfunc, src, dst, T);
-
- src += XTS_BLOCK_SIZE;
- dst += XTS_BLOCK_SIZE;
- }
-
- /* if length is not a multiple of XTS_BLOCK_SIZE then */
- if (mo > 0) {
- memcpy(CC, T, XTS_BLOCK_SIZE);
- xts_mult_x(CC);
-
- /* PP = tweak decrypt block m-1 */
- xts_tweak_decrypt(datactx, decfunc, src, PP, CC);
-
- /* Pm = first length % XTS_BLOCK_SIZE bytes of PP */
- for (i = 0; i < mo; i++) {
- CC[i] = src[XTS_BLOCK_SIZE + i];
- dst[XTS_BLOCK_SIZE + i] = PP[i];
- }
- for (; i < XTS_BLOCK_SIZE; i++) {
- CC[i] = PP[i];
- }
-
- /* Pm-1 = Tweak uncrypt CC */
- xts_tweak_decrypt(datactx, decfunc, CC, dst, T);
- }
-
- /* Decrypt the iv back */
- decfunc(tweakctx, XTS_BLOCK_SIZE, iv, T);
-}
-
-
-/**
- * xts_tweak_crypt:
- * @param ctxt: the cipher context
- * @param func: the cipher function
- * @src: buffer providing the plain text of XTS_BLOCK_SIZE bytes
- * @dst: buffer to output the cipher text of XTS_BLOCK_SIZE bytes
- * @iv: the initialization vector tweak of XTS_BLOCK_SIZE bytes
- *
- * Encrypt data with a tweak
- */
-static void xts_tweak_encrypt(const void *ctx,
- xts_cipher_func *func,
- const uint8_t *src,
- uint8_t *dst,
- uint8_t *iv)
-{
- unsigned long x;
-
- /* tweak encrypt block i */
- for (x = 0; x < XTS_BLOCK_SIZE; x++) {
- dst[x] = src[x] ^ iv[x];
- }
-
- func(ctx, XTS_BLOCK_SIZE, dst, dst);
-
- for (x = 0; x < XTS_BLOCK_SIZE; x++) {
- dst[x] = dst[x] ^ iv[x];
- }
-
- /* LFSR the tweak */
- xts_mult_x(iv);
-}
-
-
-void xts_encrypt(const void *datactx,
- const void *tweakctx,
- xts_cipher_func *encfunc,
- xts_cipher_func *decfunc,
- uint8_t *iv,
- size_t length,
- uint8_t *dst,
- const uint8_t *src)
-{
- uint8_t PP[XTS_BLOCK_SIZE], CC[XTS_BLOCK_SIZE], T[XTS_BLOCK_SIZE];
- unsigned long i, m, mo, lim;
-
- /* get number of blocks */
- m = length >> 4;
- mo = length & 15;
-
- /* must have at least one full block */
- g_assert(m != 0);
-
- if (mo == 0) {
- lim = m;
- } else {
- lim = m - 1;
- }
-
- /* encrypt the iv */
- encfunc(tweakctx, XTS_BLOCK_SIZE, T, iv);
-
- for (i = 0; i < lim; i++) {
- xts_tweak_encrypt(datactx, encfunc, src, dst, T);
-
- dst += XTS_BLOCK_SIZE;
- src += XTS_BLOCK_SIZE;
- }
-
- /* if length is not a multiple of XTS_BLOCK_SIZE then */
- if (mo > 0) {
- /* CC = tweak encrypt block m-1 */
- xts_tweak_encrypt(datactx, encfunc, src, CC, T);
-
- /* Cm = first length % XTS_BLOCK_SIZE bytes of CC */
- for (i = 0; i < mo; i++) {
- PP[i] = src[XTS_BLOCK_SIZE + i];
- dst[XTS_BLOCK_SIZE + i] = CC[i];
- }
-
- for (; i < XTS_BLOCK_SIZE; i++) {
- PP[i] = CC[i];
- }
-
- /* Cm-1 = Tweak encrypt PP */
- xts_tweak_encrypt(datactx, encfunc, PP, dst, T);
- }
-
- /* Decrypt the iv back */
- decfunc(tweakctx, XTS_BLOCK_SIZE, iv, T);
-}