From f96d8ced8ec6e37b8c128bd9c7c65919cc273711 Mon Sep 17 00:00:00 2001 From: Eric Rost Date: Fri, 24 Oct 2014 17:33:15 -0500 Subject: [PATCH] staging: skein: Adds CryptoAPI Support Adds CryptoAPI support to the Skein Hashing Algorithm driver. Signed-off-by: Eric Rost Reviewed-by: Jason Cooper Signed-off-by: Greg Kroah-Hartman --- drivers/staging/skein/Makefile | 3 +- drivers/staging/skein/skein_base.h | 5 + drivers/staging/skein/skein_generic.c | 199 ++++++++++++++++++++++++++ 3 files changed, 206 insertions(+), 1 deletion(-) create mode 100644 drivers/staging/skein/skein_generic.c diff --git a/drivers/staging/skein/Makefile b/drivers/staging/skein/Makefile index ca746a9eb2ad..d8177cccf3f0 100644 --- a/drivers/staging/skein/Makefile +++ b/drivers/staging/skein/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_CRYPTO_SKEIN) += skein_base.o \ skein_api.o \ skein_block.o \ threefish_block.o \ - threefish_api.o + threefish_api.o \ + skein_generic.o diff --git a/drivers/staging/skein/skein_base.h b/drivers/staging/skein/skein_base.h index e6669f196e5d..9f10af910f41 100644 --- a/drivers/staging/skein/skein_base.h +++ b/drivers/staging/skein/skein_base.h @@ -28,6 +28,11 @@ ** ***************************************************************************/ +/*Skein digest sizes for crypto api*/ +#define SKEIN256_DIGEST_BIT_SIZE 256 +#define SKEIN512_DIGEST_BIT_SIZE 512 +#define SKEIN1024_DIGEST_BIT_SIZE 1024 + #ifndef rotl_64 #define rotl_64(x, N) (((x) << (N)) | ((x) >> (64-(N)))) #endif diff --git a/drivers/staging/skein/skein_generic.c b/drivers/staging/skein/skein_generic.c new file mode 100644 index 000000000000..f2d6dfbc66a4 --- /dev/null +++ b/drivers/staging/skein/skein_generic.c @@ -0,0 +1,199 @@ +/* + * Cryptographic API. + * + * Skein256 Hash Algorithm. + * + * Derived from cryptoapi implementation, adapted for in-place + * scatterlist interface. + * + * Copyright (c) Eric Rost + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + */ +#include +#include +#include +#include "skein_base.h" + + +static int skein256_init(struct shash_desc *desc) +{ + return skein_256_init((struct skein_256_ctx *) shash_desc_ctx(desc), + SKEIN256_DIGEST_BIT_SIZE); +} + +int skein256_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + return skein_256_update((struct skein_256_ctx *)shash_desc_ctx(desc), + data, len); +} + +static int skein256_final(struct shash_desc *desc, u8 *out) +{ + return skein_256_final((struct skein_256_ctx *)shash_desc_ctx(desc), + out); +} + +static int skein256_export(struct shash_desc *desc, void *out) +{ + struct skein_256_ctx *sctx = shash_desc_ctx(desc); + + memcpy(out, sctx, sizeof(*sctx)); + return 0; +} + +static int skein256_import(struct shash_desc *desc, const void *in) +{ + struct skein_256_ctx *sctx = shash_desc_ctx(desc); + + memcpy(sctx, in, sizeof(*sctx)); + return 0; +} + +static int skein512_init(struct shash_desc *desc) +{ + return skein_512_init((struct skein_512_ctx *)shash_desc_ctx(desc), + SKEIN512_DIGEST_BIT_SIZE); +} + +int skein512_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + return skein_512_update((struct skein_512_ctx *)shash_desc_ctx(desc), + data, len); +} + +static int skein512_final(struct shash_desc *desc, u8 *out) +{ + return skein_512_final((struct skein_512_ctx *)shash_desc_ctx(desc), + out); +} + +static int skein512_export(struct shash_desc *desc, void *out) +{ + struct skein_512_ctx *sctx = shash_desc_ctx(desc); + + memcpy(out, sctx, sizeof(*sctx)); + return 0; +} + +static int skein512_import(struct shash_desc *desc, const void *in) +{ + struct skein_512_ctx *sctx = shash_desc_ctx(desc); + + memcpy(sctx, in, sizeof(*sctx)); + return 0; +} + +static int skein1024_init(struct shash_desc *desc) +{ + return skein_1024_init((struct skein_1024_ctx *)shash_desc_ctx(desc), + SKEIN1024_DIGEST_BIT_SIZE); +} + +int skein1024_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + return skein_1024_update((struct skein_1024_ctx *)shash_desc_ctx(desc), + data, len); +} + +static int skein1024_final(struct shash_desc *desc, u8 *out) +{ + return skein_1024_final((struct skein_1024_ctx *)shash_desc_ctx(desc), + out); +} + +static int skein1024_export(struct shash_desc *desc, void *out) +{ + struct skein_1024_ctx *sctx = shash_desc_ctx(desc); + + memcpy(out, sctx, sizeof(*sctx)); + return 0; +} + +static int skein1024_import(struct shash_desc *desc, const void *in) +{ + struct skein_1024_ctx *sctx = shash_desc_ctx(desc); + + memcpy(sctx, in, sizeof(*sctx)); + return 0; +} + +static struct shash_alg alg256 = { + .digestsize = (SKEIN256_DIGEST_BIT_SIZE / 8), + .init = skein256_init, + .update = skein256_update, + .final = skein256_final, + .export = skein256_export, + .import = skein256_import, + .descsize = sizeof(struct skein_256_ctx), + .statesize = sizeof(struct skein_256_ctx), + .base = { + .cra_name = "skein256", + .cra_driver_name = "skein", + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = SKEIN_256_BLOCK_BYTES, + } +}; + +static struct shash_alg alg512 = { + .digestsize = (SKEIN512_DIGEST_BIT_SIZE / 8), + .init = skein512_init, + .update = skein512_update, + .final = skein512_final, + .export = skein512_export, + .import = skein512_import, + .descsize = sizeof(struct skein_512_ctx), + .statesize = sizeof(struct skein_512_ctx), + .base = { + .cra_name = "skein512", + .cra_driver_name = "skein", + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = SKEIN_512_BLOCK_BYTES, + } +}; + +static struct shash_alg alg1024 = { + .digestsize = (SKEIN1024_DIGEST_BIT_SIZE / 8), + .init = skein1024_init, + .update = skein1024_update, + .final = skein1024_final, + .export = skein1024_export, + .import = skein1024_import, + .descsize = sizeof(struct skein_1024_ctx), + .statesize = sizeof(struct skein_1024_ctx), + .base = { + .cra_name = "skein1024", + .cra_driver_name = "skein", + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = SKEIN_1024_BLOCK_BYTES, + } +}; + +static int __init skein_generic_init(void) +{ + if (crypto_register_shash(&alg256)) + goto out; + if (crypto_register_shash(&alg512)) + goto unreg256; + if (crypto_register_shash(&alg1024)) + goto unreg512; + + return 0; + + +unreg512: + crypto_unregister_shash(&alg512); +unreg256: + crypto_unregister_shash(&alg256); +out: + return -1; +} + +device_initcall(skein_generic_init); -- 2.34.1