C++ (Cpp) twofish_enc_blk Examples

Example #1

File: twofish_avx2_glue.c Project: 18712886438/android_kernel_motorola_quark

static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
{
	const unsigned int bsize = TF_BLOCK_SIZE;
	struct crypt_priv *ctx = priv;
	int i;

	ctx->fpu_enabled = twofish_fpu_begin(ctx->fpu_enabled, nbytes);

	while (nbytes >= TF_AVX2_PARALLEL_BLOCKS * bsize) {
		twofish_ecb_enc_16way(ctx->ctx, srcdst, srcdst);
		srcdst += bsize * TF_AVX2_PARALLEL_BLOCKS;
		nbytes -= bsize * TF_AVX2_PARALLEL_BLOCKS;
	}

	while (nbytes >= 8 * bsize) {
		twofish_ecb_enc_8way(ctx->ctx, srcdst, srcdst);
		srcdst += bsize * 8;
		nbytes -= bsize * 8;
	}

	while (nbytes >= 3 * bsize) {
		twofish_enc_blk_3way(ctx->ctx, srcdst, srcdst);
		srcdst += bsize * 3;
		nbytes -= bsize * 3;
	}

	for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
		twofish_enc_blk(ctx->ctx, srcdst, srcdst);
}

Example #2

File: twofish_glue_3way.c Project: ARMWorks/FA_2451_Linux_Kernel

void twofish_enc_blk_ctr(void *ctx, u128 *dst, const u128 *src, u128 *iv)
{
	be128 ctrblk;

	if (dst != src)
		*dst = *src;

	u128_to_be128(&ctrblk, iv);
	u128_inc(iv);

	twofish_enc_blk(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
	u128_xor(dst, dst, (u128 *)&ctrblk);
}

Example #3

File: twofish_glue_3way.c Project: ARMWorks/FA_2451_Linux_Kernel

static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
{
	const unsigned int bsize = TF_BLOCK_SIZE;
	struct twofish_ctx *ctx = priv;
	int i;

	if (nbytes == 3 * bsize) {
		twofish_enc_blk_3way(ctx, srcdst, srcdst);
		return;
	}

	for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
		twofish_enc_blk(ctx, srcdst, srcdst);
}

Example #4

File: twofish_glue_3way.c Project: 08opt/linux

static void ctr_crypt_final(struct blkcipher_desc *desc,
			    struct blkcipher_walk *walk)
{
	struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	u8 *ctrblk = walk->iv;
	u8 keystream[TF_BLOCK_SIZE];
	u8 *src = walk->src.virt.addr;
	u8 *dst = walk->dst.virt.addr;
	unsigned int nbytes = walk->nbytes;

	twofish_enc_blk(ctx, keystream, ctrblk);
	crypto_xor(keystream, src, nbytes);
	memcpy(dst, keystream, nbytes);

	crypto_inc(ctrblk, TF_BLOCK_SIZE);
}

Example #5

File: twofish_avx_glue.c Project: AllenDou/linux

static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
{
	const unsigned int bsize = TF_BLOCK_SIZE;
	struct crypt_priv *ctx = priv;
	int i;

	ctx->fpu_enabled = twofish_fpu_begin(ctx->fpu_enabled, nbytes);

	if (nbytes == bsize * TWOFISH_PARALLEL_BLOCKS) {
		twofish_enc_blk_xway(ctx->ctx, srcdst, srcdst);
		return;
	}

	for (i = 0; i < nbytes / (bsize * 3); i++, srcdst += bsize * 3)
		twofish_enc_blk_3way(ctx->ctx, srcdst, srcdst);

	nbytes %= bsize * 3;

	for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
		twofish_enc_blk(ctx->ctx, srcdst, srcdst);
}

Example #6

File: twofish_glue_3way.c Project: 08opt/linux

static unsigned int __cbc_encrypt(struct blkcipher_desc *desc,
				  struct blkcipher_walk *walk)
{
	struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	unsigned int bsize = TF_BLOCK_SIZE;
	unsigned int nbytes = walk->nbytes;
	u128 *src = (u128 *)walk->src.virt.addr;
	u128 *dst = (u128 *)walk->dst.virt.addr;
	u128 *iv = (u128 *)walk->iv;

	do {
		u128_xor(dst, src, iv);
		twofish_enc_blk(ctx, (u8 *)dst, (u8 *)dst);
		iv = dst;

		src += 1;
		dst += 1;
		nbytes -= bsize;
	} while (nbytes >= bsize);

	u128_xor((u128 *)walk->iv, (u128 *)walk->iv, iv);
	return nbytes;
}

Example #7

File: twofish_glue.c Project: 10x-Amin/x10_Th_kernel

static void twofish_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
{
	twofish_enc_blk(tfm, dst, src);
}

Example #8

File: twofish_glue_3way.c Project: 08opt/linux

static unsigned int __ctr_crypt(struct blkcipher_desc *desc,
				struct blkcipher_walk *walk)
{
	struct twofish_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	unsigned int bsize = TF_BLOCK_SIZE;
	unsigned int nbytes = walk->nbytes;
	u128 *src = (u128 *)walk->src.virt.addr;
	u128 *dst = (u128 *)walk->dst.virt.addr;
	u128 ctrblk;
	be128 ctrblocks[3];

	be128_to_u128(&ctrblk, (be128 *)walk->iv);

	/* Process three block batch */
	if (nbytes >= bsize * 3) {
		do {
			if (dst != src) {
				dst[0] = src[0];
				dst[1] = src[1];
				dst[2] = src[2];
			}

			/* create ctrblks for parallel encrypt */
			u128_to_be128(&ctrblocks[0], &ctrblk);
			u128_inc(&ctrblk);
			u128_to_be128(&ctrblocks[1], &ctrblk);
			u128_inc(&ctrblk);
			u128_to_be128(&ctrblocks[2], &ctrblk);
			u128_inc(&ctrblk);

			twofish_enc_blk_xor_3way(ctx, (u8 *)dst,
						 (u8 *)ctrblocks);

			src += 3;
			dst += 3;
			nbytes -= bsize * 3;
		} while (nbytes >= bsize * 3);

		if (nbytes < bsize)
			goto done;
	}

	/* Handle leftovers */
	do {
		if (dst != src)
			*dst = *src;

		u128_to_be128(&ctrblocks[0], &ctrblk);
		u128_inc(&ctrblk);

		twofish_enc_blk(ctx, (u8 *)ctrblocks, (u8 *)ctrblocks);
		u128_xor(dst, dst, (u128 *)ctrblocks);

		src += 1;
		dst += 1;
		nbytes -= bsize;
	} while (nbytes >= bsize);

done:
	u128_to_be128((be128 *)walk->iv, &ctrblk);
	return nbytes;
}