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4d2fa8b44b
Pull crypto updates from Herbert Xu: "Here is the crypto update for 5.3: API: - Test shash interface directly in testmgr - cra_driver_name is now mandatory Algorithms: - Replace arc4 crypto_cipher with library helper - Implement 5 way interleave for ECB, CBC and CTR on arm64 - Add xxhash - Add continuous self-test on noise source to drbg - Update jitter RNG Drivers: - Add support for SHA204A random number generator - Add support for 7211 in iproc-rng200 - Fix fuzz test failures in inside-secure - Fix fuzz test failures in talitos - Fix fuzz test failures in qat" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (143 commits) crypto: stm32/hash - remove interruptible condition for dma crypto: stm32/hash - Fix hmac issue more than 256 bytes crypto: stm32/crc32 - rename driver file crypto: amcc - remove memset after dma_alloc_coherent crypto: ccp - Switch to SPDX license identifiers crypto: ccp - Validate the the error value used to index error messages crypto: doc - Fix formatting of new crypto engine content crypto: doc - Add parameter documentation crypto: arm64/aes-ce - implement 5 way interleave for ECB, CBC and CTR crypto: arm64/aes-ce - add 5 way interleave routines crypto: talitos - drop icv_ool crypto: talitos - fix hash on SEC1. crypto: talitos - move struct talitos_edesc into talitos.h lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE crypto/NX: Set receive window credits to max number of CRBs in RxFIFO crypto: asymmetric_keys - select CRYPTO_HASH where needed crypto: serpent - mark __serpent_setkey_sbox noinline crypto: testmgr - dynamically allocate crypto_shash crypto: testmgr - dynamically allocate testvec_config crypto: talitos - eliminate unneeded 'done' functions at build time ...
164 lines
3.3 KiB
C
164 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Cryptographic API.
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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/mm.h>
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#include <linux/lzo.h>
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#include <crypto/internal/scompress.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 void *lzo_alloc_ctx(struct crypto_scomp *tfm)
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{
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void *ctx;
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ctx = kvmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL);
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if (!ctx)
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return ERR_PTR(-ENOMEM);
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return ctx;
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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 = lzo_alloc_ctx(NULL);
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if (IS_ERR(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_free_ctx(struct crypto_scomp *tfm, void *ctx)
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{
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kvfree(ctx);
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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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lzo_free_ctx(NULL, ctx->lzo_comp_mem);
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}
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static int __lzo_compress(const u8 *src, unsigned int slen,
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u8 *dst, unsigned int *dlen, void *ctx)
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{
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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);
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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_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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return __lzo_compress(src, slen, dst, dlen, ctx->lzo_comp_mem);
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}
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static int lzo_scompress(struct crypto_scomp *tfm, const u8 *src,
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unsigned int slen, u8 *dst, unsigned int *dlen,
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void *ctx)
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{
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return __lzo_compress(src, slen, dst, dlen, ctx);
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}
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static int __lzo_decompress(const u8 *src, unsigned int slen,
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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 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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return __lzo_decompress(src, slen, dst, dlen);
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}
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static int lzo_sdecompress(struct crypto_scomp *tfm, const u8 *src,
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unsigned int slen, u8 *dst, unsigned int *dlen,
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void *ctx)
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{
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return __lzo_decompress(src, slen, dst, dlen);
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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_driver_name = "lzo-generic",
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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_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 struct scomp_alg scomp = {
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.alloc_ctx = lzo_alloc_ctx,
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.free_ctx = lzo_free_ctx,
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.compress = lzo_scompress,
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.decompress = lzo_sdecompress,
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.base = {
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.cra_name = "lzo",
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.cra_driver_name = "lzo-scomp",
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.cra_module = THIS_MODULE,
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}
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};
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static int __init lzo_mod_init(void)
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{
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int ret;
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ret = crypto_register_alg(&alg);
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if (ret)
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return ret;
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ret = crypto_register_scomp(&scomp);
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if (ret) {
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crypto_unregister_alg(&alg);
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return ret;
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}
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return ret;
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}
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static void __exit lzo_mod_fini(void)
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{
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crypto_unregister_alg(&alg);
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crypto_unregister_scomp(&scomp);
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}
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subsys_initcall(lzo_mod_init);
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module_exit(lzo_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("LZO Compression Algorithm");
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MODULE_ALIAS_CRYPTO("lzo");
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