crypto: s390 - support hardware accelerated SHA-224 (e3b4f515) · Commits · 戴 / test

arch/s390/crypto/sha256_s390.c

+55 −11

Original line number	Diff line number	Diff line
		/*
		* Cryptographic API.
		*
		* s390 implementation of the SHA256 Secure Hash Algorithm.
		* s390 implementation of the SHA256 and SHA224 Secure Hash Algorithm.
		*
		* s390 Version:
		* Copyright IBM Corp. 2005,2007
		* Copyright IBM Corp. 2005,2011
		* Author(s): Jan Glauber (jang@de.ibm.com)
		*
		* Derived from "crypto/sha256_generic.c"
		* and "arch/s390/crypto/sha1_s390.c"
		*
		* 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)
		@@ -65,7 +62,7 @@ static int sha256_import(struct shash_desc desc, const void in)
		return 0;
		}

		static struct shash_alg alg = {
		static struct shash_alg sha256_alg = {
		.digestsize = SHA256_DIGEST_SIZE,
		.init = sha256_init,
		.update = s390_sha_update,
		@@ -84,22 +81,69 @@ static struct shash_alg alg = {
		}
		};

		static int sha256_s390_init(void)
		static int sha224_init(struct shash_desc *desc)
		{
		struct s390_sha_ctx *sctx = shash_desc_ctx(desc);

		sctx->state[0] = SHA224_H0;
		sctx->state[1] = SHA224_H1;
		sctx->state[2] = SHA224_H2;
		sctx->state[3] = SHA224_H3;
		sctx->state[4] = SHA224_H4;
		sctx->state[5] = SHA224_H5;
		sctx->state[6] = SHA224_H6;
		sctx->state[7] = SHA224_H7;
		sctx->count = 0;
		sctx->func = KIMD_SHA_256;

		return 0;
		}

		static struct shash_alg sha224_alg = {
		.digestsize = SHA224_DIGEST_SIZE,
		.init = sha224_init,
		.update = s390_sha_update,
		.final = s390_sha_final,
		.export = sha256_export,
		.import = sha256_import,
		.descsize = sizeof(struct s390_sha_ctx),
		.statesize = sizeof(struct sha256_state),
		.base = {
		.cra_name = "sha224",
		.cra_driver_name= "sha224-s390",
		.cra_priority = CRYPT_S390_PRIORITY,
		.cra_flags = CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize = SHA224_BLOCK_SIZE,
		.cra_module = THIS_MODULE,
		}
		};

		static int __init sha256_s390_init(void)
		{
		int ret;

		if (!crypt_s390_func_available(KIMD_SHA_256, CRYPT_S390_MSA))
		return -EOPNOTSUPP;

		return crypto_register_shash(&alg);
		ret = crypto_register_shash(&sha256_alg);
		if (ret < 0)
		goto out;
		ret = crypto_register_shash(&sha224_alg);
		if (ret < 0)
		crypto_unregister_shash(&sha256_alg);
		out:
		return ret;
		}

		static void __exit sha256_s390_fini(void)
		{
		crypto_unregister_shash(&alg);
		crypto_unregister_shash(&sha224_alg);
		crypto_unregister_shash(&sha256_alg);
		}

		module_init(sha256_s390_init);
		module_exit(sha256_s390_fini);

		MODULE_ALIAS("sha256");
		MODULE_ALIAS("sha224");
		MODULE_LICENSE("GPL");
		MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm");
		MODULE_DESCRIPTION("SHA256 and SHA224 Secure Hash Algorithm");

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