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[CRYPTO] lzo: Add LZO compression algorithm support
Add LZO compression algorithm support Signed-off-by: Zoltan Sogor <weth@inf.u-szeged.hu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Zoltan Sogor
Herbert Xu
parent
91755a921c
commit
0b77abb3b2
@ -536,6 +536,14 @@ config CRYPTO_AUTHENC
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Authenc: Combined mode wrapper for IPsec.
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This is required for IPSec.
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config CRYPTO_LZO
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tristate "LZO compression algorithm"
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select CRYPTO_ALGAPI
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select LZO_COMPRESS
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select LZO_DECOMPRESS
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help
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This is the LZO algorithm.
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source "drivers/crypto/Kconfig"
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endif # if CRYPTO
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@ -55,6 +55,7 @@ obj-$(CONFIG_CRYPTO_DEFLATE) += deflate.o
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obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o
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obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o
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obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o
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obj-$(CONFIG_CRYPTO_LZO) += lzo.o
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obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
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106
crypto/lzo.c
Normal file
106
crypto/lzo.c
Normal file
@ -0,0 +1,106 @@
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/*
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* Cryptographic API.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/crypto.h>
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#include <linux/vmalloc.h>
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#include <linux/lzo.h>
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struct lzo_ctx {
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void *lzo_comp_mem;
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};
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static int lzo_init(struct crypto_tfm *tfm)
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{
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struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
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ctx->lzo_comp_mem = vmalloc(LZO1X_MEM_COMPRESS);
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if (!ctx->lzo_comp_mem)
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return -ENOMEM;
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return 0;
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}
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static void lzo_exit(struct crypto_tfm *tfm)
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{
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struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
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vfree(ctx->lzo_comp_mem);
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}
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static int lzo_compress(struct crypto_tfm *tfm, const u8 *src,
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unsigned int slen, u8 *dst, unsigned int *dlen)
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{
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struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
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size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */
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int err;
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err = lzo1x_1_compress(src, slen, dst, &tmp_len, ctx->lzo_comp_mem);
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if (err != LZO_E_OK)
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return -EINVAL;
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*dlen = tmp_len;
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return 0;
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}
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static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src,
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unsigned int slen, u8 *dst, unsigned int *dlen)
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{
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int err;
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size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */
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err = lzo1x_decompress_safe(src, slen, dst, &tmp_len);
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if (err != LZO_E_OK)
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return -EINVAL;
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*dlen = tmp_len;
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return 0;
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}
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static struct crypto_alg alg = {
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.cra_name = "lzo",
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.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
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.cra_ctxsize = sizeof(struct lzo_ctx),
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(alg.cra_list),
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.cra_init = lzo_init,
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.cra_exit = lzo_exit,
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.cra_u = { .compress = {
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.coa_compress = lzo_compress,
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.coa_decompress = lzo_decompress } }
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};
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static int __init init(void)
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{
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return crypto_register_alg(&alg);
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}
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static void __exit fini(void)
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{
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crypto_unregister_alg(&alg);
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}
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module_init(init);
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module_exit(fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("LZO Compression Algorithm");
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@ -84,7 +84,7 @@ static char *check[] = {
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"cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
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"arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
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"khazad", "wp512", "wp384", "wp256", "tnepres", "xeta", "fcrypt",
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"camellia", "seed", "salsa20", NULL
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"camellia", "seed", "salsa20", "lzo", NULL
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};
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static void hexdump(unsigned char *buf, unsigned int len)
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@ -1292,6 +1292,8 @@ static void do_test(void)
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test_comp("deflate", deflate_comp_tv_template,
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deflate_decomp_tv_template, DEFLATE_COMP_TEST_VECTORS,
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DEFLATE_DECOMP_TEST_VECTORS);
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test_comp("lzo", lzo_comp_tv_template, lzo_decomp_tv_template,
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LZO_COMP_TEST_VECTORS, LZO_DECOMP_TEST_VECTORS);
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test_hash("crc32c", crc32c_tv_template, CRC32C_TEST_VECTORS);
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test_hash("hmac(md5)", hmac_md5_tv_template,
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HMAC_MD5_TEST_VECTORS);
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@ -1550,6 +1552,11 @@ static void do_test(void)
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AES_GCM_DEC_TEST_VECTORS);
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break;
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case 36:
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test_comp("lzo", lzo_comp_tv_template, lzo_decomp_tv_template,
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LZO_COMP_TEST_VECTORS, LZO_DECOMP_TEST_VECTORS);
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break;
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case 100:
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test_hash("hmac(md5)", hmac_md5_tv_template,
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HMAC_MD5_TEST_VECTORS);
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@ -7460,6 +7460,88 @@ static struct comp_testvec deflate_decomp_tv_template[] = {
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},
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};
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/*
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* LZO test vectors (null-terminated strings).
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*/
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#define LZO_COMP_TEST_VECTORS 2
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#define LZO_DECOMP_TEST_VECTORS 2
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static struct comp_testvec lzo_comp_tv_template[] = {
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{
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.inlen = 70,
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.outlen = 46,
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.input = "Join us now and share the software "
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"Join us now and share the software ",
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.output = { 0x00, 0x0d, 0x4a, 0x6f, 0x69, 0x6e, 0x20, 0x75,
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0x73, 0x20, 0x6e, 0x6f, 0x77, 0x20, 0x61, 0x6e,
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0x64, 0x20, 0x73, 0x68, 0x61, 0x72, 0x65, 0x20,
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0x74, 0x68, 0x65, 0x20, 0x73, 0x6f, 0x66, 0x74,
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0x77, 0x70, 0x01, 0x01, 0x4a, 0x6f, 0x69, 0x6e,
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0x3d, 0x88, 0x00, 0x11, 0x00, 0x00 },
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}, {
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.inlen = 159,
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.outlen = 133,
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.input = "This document describes a compression method based on the LZO "
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"compression algorithm. This document defines the application of "
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"the LZO algorithm used in UBIFS.",
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.output = { 0x00, 0x2b, 0x54, 0x68, 0x69, 0x73, 0x20, 0x64,
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0x6f, 0x63, 0x75, 0x6d, 0x65, 0x6e, 0x74, 0x20,
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0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65,
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0x73, 0x20, 0x61, 0x20, 0x63, 0x6f, 0x6d, 0x70,
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0x72, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x20,
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0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64, 0x20, 0x62,
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0x61, 0x73, 0x65, 0x64, 0x20, 0x6f, 0x6e, 0x20,
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0x74, 0x68, 0x65, 0x20, 0x4c, 0x5a, 0x4f, 0x2b,
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0x8c, 0x00, 0x0d, 0x61, 0x6c, 0x67, 0x6f, 0x72,
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0x69, 0x74, 0x68, 0x6d, 0x2e, 0x20, 0x20, 0x54,
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0x68, 0x69, 0x73, 0x2a, 0x54, 0x01, 0x02, 0x66,
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0x69, 0x6e, 0x65, 0x73, 0x94, 0x06, 0x05, 0x61,
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0x70, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x76,
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0x0a, 0x6f, 0x66, 0x88, 0x02, 0x60, 0x09, 0x27,
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0xf0, 0x00, 0x0c, 0x20, 0x75, 0x73, 0x65, 0x64,
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0x20, 0x69, 0x6e, 0x20, 0x55, 0x42, 0x49, 0x46,
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0x53, 0x2e, 0x11, 0x00, 0x00 },
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},
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};
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static struct comp_testvec lzo_decomp_tv_template[] = {
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{
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.inlen = 133,
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.outlen = 159,
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.input = { 0x00, 0x2b, 0x54, 0x68, 0x69, 0x73, 0x20, 0x64,
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0x6f, 0x63, 0x75, 0x6d, 0x65, 0x6e, 0x74, 0x20,
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0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65,
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0x73, 0x20, 0x61, 0x20, 0x63, 0x6f, 0x6d, 0x70,
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0x72, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x20,
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0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64, 0x20, 0x62,
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0x61, 0x73, 0x65, 0x64, 0x20, 0x6f, 0x6e, 0x20,
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0x74, 0x68, 0x65, 0x20, 0x4c, 0x5a, 0x4f, 0x2b,
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0x8c, 0x00, 0x0d, 0x61, 0x6c, 0x67, 0x6f, 0x72,
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0x69, 0x74, 0x68, 0x6d, 0x2e, 0x20, 0x20, 0x54,
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0x68, 0x69, 0x73, 0x2a, 0x54, 0x01, 0x02, 0x66,
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0x69, 0x6e, 0x65, 0x73, 0x94, 0x06, 0x05, 0x61,
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0x70, 0x70, 0x6c, 0x69, 0x63, 0x61, 0x74, 0x76,
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0x0a, 0x6f, 0x66, 0x88, 0x02, 0x60, 0x09, 0x27,
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0xf0, 0x00, 0x0c, 0x20, 0x75, 0x73, 0x65, 0x64,
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0x20, 0x69, 0x6e, 0x20, 0x55, 0x42, 0x49, 0x46,
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0x53, 0x2e, 0x11, 0x00, 0x00 },
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.output = "This document describes a compression method based on the LZO "
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"compression algorithm. This document defines the application of "
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"the LZO algorithm used in UBIFS.",
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}, {
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.inlen = 46,
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.outlen = 70,
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.input = { 0x00, 0x0d, 0x4a, 0x6f, 0x69, 0x6e, 0x20, 0x75,
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0x73, 0x20, 0x6e, 0x6f, 0x77, 0x20, 0x61, 0x6e,
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0x64, 0x20, 0x73, 0x68, 0x61, 0x72, 0x65, 0x20,
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0x74, 0x68, 0x65, 0x20, 0x73, 0x6f, 0x66, 0x74,
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0x77, 0x70, 0x01, 0x01, 0x4a, 0x6f, 0x69, 0x6e,
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0x3d, 0x88, 0x00, 0x11, 0x00, 0x00 },
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.output = "Join us now and share the software "
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"Join us now and share the software ",
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},
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};
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/*
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* Michael MIC test vectors from IEEE 802.11i
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*/
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