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- /*
- * Cryptographic API.
- *
- * Skein256 Hash Algorithm.
- *
- * Derived from cryptoapi implementation, adapted for in-place
- * scatterlist interface.
- *
- * Copyright (c) Eric Rost <eric.rost@mybabylon.net>
- *
- * 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 <linux/types.h>
- #include <linux/init.h>
- #include <linux/module.h>
- #include <crypto/internal/hash.h>
- #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);
- }
- static 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);
- }
- static 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);
- }
- static 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,
- .cra_module = THIS_MODULE,
- }
- };
- 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,
- .cra_module = THIS_MODULE,
- }
- };
- 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,
- .cra_module = THIS_MODULE,
- }
- };
- 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;
- }
- static void __exit skein_generic_fini(void)
- {
- crypto_unregister_shash(&alg256);
- crypto_unregister_shash(&alg512);
- crypto_unregister_shash(&alg1024);
- }
- module_init(skein_generic_init);
- module_exit(skein_generic_fini);
- MODULE_LICENSE("GPL");
- MODULE_DESCRIPTION("Skein Hash Algorithm");
- MODULE_ALIAS("skein");
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