staging: skein: Adds CryptoAPI Support
Adds CryptoAPI support to the Skein Hashing Algorithm driver. Signed-off-by: Eric Rost <eric.rost@mybabylon.net> Reviewed-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Rost
Greg Kroah-Hartman
parent
c17cdeb419
commit
f96d8ced8e
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@ -5,4 +5,5 @@ obj-$(CONFIG_CRYPTO_SKEIN) += skein_base.o \
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skein_api.o \
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skein_block.o \
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threefish_block.o \
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threefish_api.o
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threefish_api.o \
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skein_generic.o
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@ -28,6 +28,11 @@
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**
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***************************************************************************/
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/*Skein digest sizes for crypto api*/
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#define SKEIN256_DIGEST_BIT_SIZE 256
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#define SKEIN512_DIGEST_BIT_SIZE 512
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#define SKEIN1024_DIGEST_BIT_SIZE 1024
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#ifndef rotl_64
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#define rotl_64(x, N) (((x) << (N)) | ((x) >> (64-(N))))
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#endif
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@ -0,0 +1,199 @@
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/*
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* Cryptographic API.
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*
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* Skein256 Hash Algorithm.
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*
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* Derived from cryptoapi implementation, adapted for in-place
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* scatterlist interface.
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*
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* Copyright (c) Eric Rost <eric.rost@mybabylon.net>
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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 as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <crypto/internal/hash.h>
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#include "skein_base.h"
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static int skein256_init(struct shash_desc *desc)
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{
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return skein_256_init((struct skein_256_ctx *) shash_desc_ctx(desc),
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SKEIN256_DIGEST_BIT_SIZE);
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}
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int skein256_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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return skein_256_update((struct skein_256_ctx *)shash_desc_ctx(desc),
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data, len);
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}
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static int skein256_final(struct shash_desc *desc, u8 *out)
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{
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return skein_256_final((struct skein_256_ctx *)shash_desc_ctx(desc),
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out);
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}
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static int skein256_export(struct shash_desc *desc, void *out)
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{
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struct skein_256_ctx *sctx = shash_desc_ctx(desc);
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memcpy(out, sctx, sizeof(*sctx));
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return 0;
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}
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static int skein256_import(struct shash_desc *desc, const void *in)
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{
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struct skein_256_ctx *sctx = shash_desc_ctx(desc);
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memcpy(sctx, in, sizeof(*sctx));
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return 0;
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}
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static int skein512_init(struct shash_desc *desc)
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{
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return skein_512_init((struct skein_512_ctx *)shash_desc_ctx(desc),
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SKEIN512_DIGEST_BIT_SIZE);
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}
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int skein512_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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return skein_512_update((struct skein_512_ctx *)shash_desc_ctx(desc),
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data, len);
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}
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static int skein512_final(struct shash_desc *desc, u8 *out)
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{
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return skein_512_final((struct skein_512_ctx *)shash_desc_ctx(desc),
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out);
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}
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static int skein512_export(struct shash_desc *desc, void *out)
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{
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struct skein_512_ctx *sctx = shash_desc_ctx(desc);
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memcpy(out, sctx, sizeof(*sctx));
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return 0;
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}
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static int skein512_import(struct shash_desc *desc, const void *in)
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{
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struct skein_512_ctx *sctx = shash_desc_ctx(desc);
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memcpy(sctx, in, sizeof(*sctx));
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return 0;
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}
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static int skein1024_init(struct shash_desc *desc)
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{
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return skein_1024_init((struct skein_1024_ctx *)shash_desc_ctx(desc),
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SKEIN1024_DIGEST_BIT_SIZE);
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}
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int skein1024_update(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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return skein_1024_update((struct skein_1024_ctx *)shash_desc_ctx(desc),
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data, len);
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}
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static int skein1024_final(struct shash_desc *desc, u8 *out)
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{
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return skein_1024_final((struct skein_1024_ctx *)shash_desc_ctx(desc),
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out);
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}
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static int skein1024_export(struct shash_desc *desc, void *out)
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{
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struct skein_1024_ctx *sctx = shash_desc_ctx(desc);
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memcpy(out, sctx, sizeof(*sctx));
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return 0;
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}
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static int skein1024_import(struct shash_desc *desc, const void *in)
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{
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struct skein_1024_ctx *sctx = shash_desc_ctx(desc);
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memcpy(sctx, in, sizeof(*sctx));
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return 0;
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}
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static struct shash_alg alg256 = {
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.digestsize = (SKEIN256_DIGEST_BIT_SIZE / 8),
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.init = skein256_init,
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.update = skein256_update,
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.final = skein256_final,
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.export = skein256_export,
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.import = skein256_import,
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.descsize = sizeof(struct skein_256_ctx),
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.statesize = sizeof(struct skein_256_ctx),
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.base = {
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.cra_name = "skein256",
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.cra_driver_name = "skein",
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.cra_flags = CRYPTO_ALG_TYPE_SHASH,
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.cra_blocksize = SKEIN_256_BLOCK_BYTES,
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}
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};
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static struct shash_alg alg512 = {
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.digestsize = (SKEIN512_DIGEST_BIT_SIZE / 8),
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.init = skein512_init,
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.update = skein512_update,
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.final = skein512_final,
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.export = skein512_export,
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.import = skein512_import,
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.descsize = sizeof(struct skein_512_ctx),
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.statesize = sizeof(struct skein_512_ctx),
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.base = {
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.cra_name = "skein512",
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.cra_driver_name = "skein",
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.cra_flags = CRYPTO_ALG_TYPE_SHASH,
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.cra_blocksize = SKEIN_512_BLOCK_BYTES,
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}
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};
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static struct shash_alg alg1024 = {
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.digestsize = (SKEIN1024_DIGEST_BIT_SIZE / 8),
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.init = skein1024_init,
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.update = skein1024_update,
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.final = skein1024_final,
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.export = skein1024_export,
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.import = skein1024_import,
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.descsize = sizeof(struct skein_1024_ctx),
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.statesize = sizeof(struct skein_1024_ctx),
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.base = {
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.cra_name = "skein1024",
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.cra_driver_name = "skein",
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.cra_flags = CRYPTO_ALG_TYPE_SHASH,
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.cra_blocksize = SKEIN_1024_BLOCK_BYTES,
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}
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};
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static int __init skein_generic_init(void)
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{
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if (crypto_register_shash(&alg256))
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goto out;
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if (crypto_register_shash(&alg512))
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goto unreg256;
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if (crypto_register_shash(&alg1024))
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goto unreg512;
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return 0;
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unreg512:
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crypto_unregister_shash(&alg512);
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unreg256:
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crypto_unregister_shash(&alg256);
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out:
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return -1;
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}
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device_initcall(skein_generic_init);
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