From 291dc7c0996b09a7c58b2cf6e9cc3495123a607e Mon Sep 17 00:00:00 2001 From: Jan Glauber Date: Thu, 6 Mar 2008 19:52:00 +0800 Subject: [CRYPTO] sha512: Hardware acceleration for s390 Exploit the System z10 hardware acceleration for SHA512. Signed-off-by: Jan Glauber Signed-off-by: Herbert Xu --- arch/s390/crypto/sha512_s390.c | 71 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 arch/s390/crypto/sha512_s390.c (limited to 'arch/s390/crypto/sha512_s390.c') diff --git a/arch/s390/crypto/sha512_s390.c b/arch/s390/crypto/sha512_s390.c new file mode 100644 index 000000000000..4d651bbce0f4 --- /dev/null +++ b/arch/s390/crypto/sha512_s390.c @@ -0,0 +1,71 @@ +/* + * Cryptographic API. + * + * s390 implementation of the SHA512 Secure Hash Algorithm. + * + * Copyright IBM Corp. 2007 + * Author(s): Jan Glauber (jang@de.ibm.com) + * + * 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 "sha.h" +#include "crypt_s390.h" + +static void sha512_init(struct crypto_tfm *tfm) +{ + struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm); + + *(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL; + *(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL; + *(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL; + *(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL; + *(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL; + *(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL; + *(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL; + *(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL; + ctx->count = 0; + ctx->func = KIMD_SHA_512; +} + +static struct crypto_alg alg = { + .cra_name = "sha512", + .cra_driver_name = "sha512-s390", + .cra_priority = CRYPT_S390_PRIORITY, + .cra_flags = CRYPTO_ALG_TYPE_DIGEST, + .cra_blocksize = SHA512_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct s390_sha_ctx), + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(alg.cra_list), + .cra_u = { .digest = { + .dia_digestsize = SHA512_DIGEST_SIZE, + .dia_init = sha512_init, + .dia_update = s390_sha_update, + .dia_final = s390_sha_final } } +}; + +static int __init init(void) +{ + if (!crypt_s390_func_available(KIMD_SHA_512)) + return -EOPNOTSUPP; + return crypto_register_alg(&alg); +} + +static void __exit fini(void) +{ + crypto_unregister_alg(&alg); +} + +module_init(init); +module_exit(fini); + +MODULE_ALIAS("sha512"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("SHA512 Secure Hash Algorithm"); -- cgit v1.2.3-59-g8ed1b