C++ (Cpp) serpent_fpu_end Examples

Example #1

File: serpent_avx2_glue.c Project: 0x000000FF/edison-linux

static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	be128 buf[SERPENT_AVX2_PARALLEL_BLOCKS];
	struct crypt_priv crypt_ctx = {
		.ctx = &ctx->serpent_ctx,
		.fpu_enabled = false,
	};
	struct lrw_crypt_req req = {
		.tbuf = buf,
		.tbuflen = sizeof(buf),

		.table_ctx = &ctx->lrw_table,
		.crypt_ctx = &crypt_ctx,
		.crypt_fn = encrypt_callback,
	};
	int ret;

	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
	ret = lrw_crypt(desc, dst, src, nbytes, &req);
	serpent_fpu_end(crypt_ctx.fpu_enabled);

	return ret;
}

static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	be128 buf[SERPENT_AVX2_PARALLEL_BLOCKS];
	struct crypt_priv crypt_ctx = {
		.ctx = &ctx->serpent_ctx,
		.fpu_enabled = false,
	};
	struct lrw_crypt_req req = {
		.tbuf = buf,
		.tbuflen = sizeof(buf),

		.table_ctx = &ctx->lrw_table,
		.crypt_ctx = &crypt_ctx,
		.crypt_fn = decrypt_callback,
	};
	int ret;

	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
	ret = lrw_crypt(desc, dst, src, nbytes, &req);
	serpent_fpu_end(crypt_ctx.fpu_enabled);

	return ret;
}

static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);

	return glue_xts_crypt_128bit(&serpent_enc_xts, desc, dst, src, nbytes,
				     XTS_TWEAK_CAST(__serpent_encrypt),
				     &ctx->tweak_ctx, &ctx->crypt_ctx);
}

static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);

	return glue_xts_crypt_128bit(&serpent_dec_xts, desc, dst, src, nbytes,
				     XTS_TWEAK_CAST(__serpent_encrypt),
				     &ctx->tweak_ctx, &ctx->crypt_ctx);
}

static struct crypto_alg srp_algs[10] = { {
	.cra_name		= "__ecb-serpent-avx2",
	.cra_driver_name	= "__driver-ecb-serpent-avx2",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= SERPENT_BLOCK_SIZE,
	.cra_ctxsize		= sizeof(struct serpent_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_list		= LIST_HEAD_INIT(srp_algs[0].cra_list),
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE,
			.setkey		= serpent_setkey,
			.encrypt	= ecb_encrypt,
			.decrypt	= ecb_decrypt,
		},
	},
}, {
	.cra_name		= "__cbc-serpent-avx2",
	.cra_driver_name	= "__driver-cbc-serpent-avx2",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= SERPENT_BLOCK_SIZE,
	.cra_ctxsize		= sizeof(struct serpent_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_list		= LIST_HEAD_INIT(srp_algs[1].cra_list),
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE,
			.setkey		= serpent_setkey,
			.encrypt	= cbc_encrypt,
			.decrypt	= cbc_decrypt,
		},
	},
}, {
	.cra_name		= "__ctr-serpent-avx2",
	.cra_driver_name	= "__driver-ctr-serpent-avx2",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= 1,
	.cra_ctxsize		= sizeof(struct serpent_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_list		= LIST_HEAD_INIT(srp_algs[2].cra_list),
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE,
			.ivsize		= SERPENT_BLOCK_SIZE,
			.setkey		= serpent_setkey,
			.encrypt	= ctr_crypt,
			.decrypt	= ctr_crypt,
		},
	},
}, {
	.cra_name		= "__lrw-serpent-avx2",
	.cra_driver_name	= "__driver-lrw-serpent-avx2",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= SERPENT_BLOCK_SIZE,
	.cra_ctxsize		= sizeof(struct serpent_lrw_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_list		= LIST_HEAD_INIT(srp_algs[3].cra_list),
	.cra_exit		= lrw_serpent_exit_tfm,
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE +
					  SERPENT_BLOCK_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE +
					  SERPENT_BLOCK_SIZE,
			.ivsize		= SERPENT_BLOCK_SIZE,
			.setkey		= lrw_serpent_setkey,
			.encrypt	= lrw_encrypt,
			.decrypt	= lrw_decrypt,
		},
	},
}, {
	.cra_name		= "__xts-serpent-avx2",

Example #2

File: serpent_avx_glue.c Project: DenisLug/mptcp

static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	be128 buf[SERPENT_PARALLEL_BLOCKS];
	struct crypt_priv crypt_ctx = {
		.ctx = &ctx->serpent_ctx,
		.fpu_enabled = false,
	};
	struct lrw_crypt_req req = {
		.tbuf = buf,
		.tbuflen = sizeof(buf),

		.table_ctx = &ctx->lrw_table,
		.crypt_ctx = &crypt_ctx,
		.crypt_fn = encrypt_callback,
	};
	int ret;

	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
	ret = lrw_crypt(desc, dst, src, nbytes, &req);
	serpent_fpu_end(crypt_ctx.fpu_enabled);

	return ret;
}

static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
	be128 buf[SERPENT_PARALLEL_BLOCKS];
	struct crypt_priv crypt_ctx = {
		.ctx = &ctx->serpent_ctx,
		.fpu_enabled = false,
	};
	struct lrw_crypt_req req = {
		.tbuf = buf,
		.tbuflen = sizeof(buf),

		.table_ctx = &ctx->lrw_table,
		.crypt_ctx = &crypt_ctx,
		.crypt_fn = decrypt_callback,
	};
	int ret;

	desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
	ret = lrw_crypt(desc, dst, src, nbytes, &req);
	serpent_fpu_end(crypt_ctx.fpu_enabled);

	return ret;
}

void lrw_serpent_exit_tfm(struct crypto_tfm *tfm)
{
	struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm);

	lrw_free_table(&ctx->lrw_table);
}
EXPORT_SYMBOL_GPL(lrw_serpent_exit_tfm);

int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
		       unsigned int keylen)
{
	struct serpent_xts_ctx *ctx = crypto_tfm_ctx(tfm);
	u32 *flags = &tfm->crt_flags;
	int err;

	/* key consists of keys of equal size concatenated, therefore
	 * the length must be even
	 */
	if (keylen % 2) {
		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
		return -EINVAL;
	}

	/* first half of xts-key is for crypt */
	err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2);
	if (err)
		return err;

	/* second half of xts-key is for tweak */
	return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2);
}
EXPORT_SYMBOL_GPL(xts_serpent_setkey);

static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);

	return glue_xts_crypt_128bit(&serpent_enc_xts, desc, dst, src, nbytes,
				     XTS_TWEAK_CAST(__serpent_encrypt),
				     &ctx->tweak_ctx, &ctx->crypt_ctx);
}

static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
		       struct scatterlist *src, unsigned int nbytes)
{
	struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);

	return glue_xts_crypt_128bit(&serpent_dec_xts, desc, dst, src, nbytes,
				     XTS_TWEAK_CAST(__serpent_encrypt),
				     &ctx->tweak_ctx, &ctx->crypt_ctx);
}

static struct crypto_alg serpent_algs[10] = { {
	.cra_name		= "__ecb-serpent-avx",
	.cra_driver_name	= "__driver-ecb-serpent-avx",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= SERPENT_BLOCK_SIZE,
	.cra_ctxsize		= sizeof(struct serpent_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE,
			.setkey		= serpent_setkey,
			.encrypt	= ecb_encrypt,
			.decrypt	= ecb_decrypt,
		},
	},
}, {
	.cra_name		= "__cbc-serpent-avx",
	.cra_driver_name	= "__driver-cbc-serpent-avx",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= SERPENT_BLOCK_SIZE,
	.cra_ctxsize		= sizeof(struct serpent_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE,
			.setkey		= serpent_setkey,
			.encrypt	= cbc_encrypt,
			.decrypt	= cbc_decrypt,
		},
	},
}, {
	.cra_name		= "__ctr-serpent-avx",
	.cra_driver_name	= "__driver-ctr-serpent-avx",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= 1,
	.cra_ctxsize		= sizeof(struct serpent_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE,
			.ivsize		= SERPENT_BLOCK_SIZE,
			.setkey		= serpent_setkey,
			.encrypt	= ctr_crypt,
			.decrypt	= ctr_crypt,
		},
	},
}, {
	.cra_name		= "__lrw-serpent-avx",
	.cra_driver_name	= "__driver-lrw-serpent-avx",
	.cra_priority		= 0,
	.cra_flags		= CRYPTO_ALG_TYPE_BLKCIPHER |
				  CRYPTO_ALG_INTERNAL,
	.cra_blocksize		= SERPENT_BLOCK_SIZE,
	.cra_ctxsize		= sizeof(struct serpent_lrw_ctx),
	.cra_alignmask		= 0,
	.cra_type		= &crypto_blkcipher_type,
	.cra_module		= THIS_MODULE,
	.cra_exit		= lrw_serpent_exit_tfm,
	.cra_u = {
		.blkcipher = {
			.min_keysize	= SERPENT_MIN_KEY_SIZE +
					  SERPENT_BLOCK_SIZE,
			.max_keysize	= SERPENT_MAX_KEY_SIZE +
					  SERPENT_BLOCK_SIZE,
			.ivsize		= SERPENT_BLOCK_SIZE,
			.setkey		= lrw_serpent_setkey,
			.encrypt	= lrw_encrypt,
			.decrypt	= lrw_decrypt,
		},
	},
}, {
	.cra_name		= "__xts-serpent-avx",