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![Linus Torvalds](/assets/img/avatar_default.png)
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 ...
161 lines
3.4 KiB
C
161 lines
3.4 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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* Copyright (c) 2013 Chanho Min <chanho.min@lge.com>
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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/lz4.h>
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#include <crypto/internal/scompress.h>
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struct lz4hc_ctx {
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void *lz4hc_comp_mem;
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};
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static void *lz4hc_alloc_ctx(struct crypto_scomp *tfm)
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{
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void *ctx;
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ctx = vmalloc(LZ4HC_MEM_COMPRESS);
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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 lz4hc_init(struct crypto_tfm *tfm)
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{
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struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
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ctx->lz4hc_comp_mem = lz4hc_alloc_ctx(NULL);
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if (IS_ERR(ctx->lz4hc_comp_mem))
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return -ENOMEM;
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return 0;
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}
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static void lz4hc_free_ctx(struct crypto_scomp *tfm, void *ctx)
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{
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vfree(ctx);
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}
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static void lz4hc_exit(struct crypto_tfm *tfm)
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{
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struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
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lz4hc_free_ctx(NULL, ctx->lz4hc_comp_mem);
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}
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static int __lz4hc_compress_crypto(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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int out_len = LZ4_compress_HC(src, dst, slen,
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*dlen, LZ4HC_DEFAULT_CLEVEL, ctx);
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if (!out_len)
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return -EINVAL;
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*dlen = out_len;
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return 0;
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}
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static int lz4hc_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 __lz4hc_compress_crypto(src, slen, dst, dlen, ctx);
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}
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static int lz4hc_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
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unsigned int slen, u8 *dst,
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unsigned int *dlen)
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{
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struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
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return __lz4hc_compress_crypto(src, slen, dst, dlen,
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ctx->lz4hc_comp_mem);
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}
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static int __lz4hc_decompress_crypto(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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int out_len = LZ4_decompress_safe(src, dst, slen, *dlen);
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if (out_len < 0)
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return -EINVAL;
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*dlen = out_len;
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return 0;
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}
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static int lz4hc_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 __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
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}
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static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
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unsigned int slen, u8 *dst,
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unsigned int *dlen)
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{
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return __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
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}
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static struct crypto_alg alg_lz4hc = {
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.cra_name = "lz4hc",
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.cra_driver_name = "lz4hc-generic",
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.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
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.cra_ctxsize = sizeof(struct lz4hc_ctx),
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.cra_module = THIS_MODULE,
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.cra_init = lz4hc_init,
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.cra_exit = lz4hc_exit,
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.cra_u = { .compress = {
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.coa_compress = lz4hc_compress_crypto,
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.coa_decompress = lz4hc_decompress_crypto } }
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};
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static struct scomp_alg scomp = {
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.alloc_ctx = lz4hc_alloc_ctx,
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.free_ctx = lz4hc_free_ctx,
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.compress = lz4hc_scompress,
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.decompress = lz4hc_sdecompress,
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.base = {
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.cra_name = "lz4hc",
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.cra_driver_name = "lz4hc-scomp",
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.cra_module = THIS_MODULE,
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}
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};
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static int __init lz4hc_mod_init(void)
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{
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int ret;
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ret = crypto_register_alg(&alg_lz4hc);
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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_lz4hc);
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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 lz4hc_mod_fini(void)
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{
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crypto_unregister_alg(&alg_lz4hc);
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crypto_unregister_scomp(&scomp);
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}
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subsys_initcall(lz4hc_mod_init);
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module_exit(lz4hc_mod_fini);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("LZ4HC Compression Algorithm");
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MODULE_ALIAS_CRYPTO("lz4hc");
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