mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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65c9a9f925
Explicitly include <linux/export.h> in files which contain an
EXPORT_SYMBOL().
See commit a934a57a42 ("scripts/misc-check: check missing #include
<linux/export.h> when W=1") for more details.
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Cryptographic API.
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*
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* s390 generic implementation of the SHA Secure Hash Algorithms.
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*
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* Copyright IBM Corp. 2007
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* Author(s): Jan Glauber (jang@de.ibm.com)
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*/
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#include <crypto/internal/hash.h>
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#include <linux/export.h>
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#include <linux/module.h>
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#include <asm/cpacf.h>
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#include "sha.h"
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int s390_sha_update_blocks(struct shash_desc *desc, const u8 *data,
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unsigned int len)
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{
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unsigned int bsize = crypto_shash_blocksize(desc->tfm);
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struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
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unsigned int n;
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int fc;
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fc = ctx->func;
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if (ctx->first_message_part)
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fc |= CPACF_KIMD_NIP;
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/* process as many blocks as possible */
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n = (len / bsize) * bsize;
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ctx->count += n;
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switch (ctx->func) {
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case CPACF_KLMD_SHA_512:
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case CPACF_KLMD_SHA3_384:
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if (ctx->count < n)
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ctx->sha512.count_hi++;
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break;
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}
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cpacf_kimd(fc, ctx->state, data, n);
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ctx->first_message_part = 0;
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return len - n;
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}
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EXPORT_SYMBOL_GPL(s390_sha_update_blocks);
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static int s390_crypto_shash_parmsize(int func)
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{
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switch (func) {
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case CPACF_KLMD_SHA_1:
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return 20;
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case CPACF_KLMD_SHA_256:
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return 32;
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case CPACF_KLMD_SHA_512:
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return 64;
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case CPACF_KLMD_SHA3_224:
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case CPACF_KLMD_SHA3_256:
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case CPACF_KLMD_SHA3_384:
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case CPACF_KLMD_SHA3_512:
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return 200;
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default:
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return -EINVAL;
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}
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}
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int s390_sha_finup(struct shash_desc *desc, const u8 *src, unsigned int len,
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u8 *out)
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{
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struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
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int mbl_offset, fc;
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u64 bits;
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ctx->count += len;
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bits = ctx->count * 8;
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mbl_offset = s390_crypto_shash_parmsize(ctx->func);
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if (mbl_offset < 0)
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return -EINVAL;
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mbl_offset = mbl_offset / sizeof(u32);
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/* set total msg bit length (mbl) in CPACF parmblock */
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switch (ctx->func) {
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case CPACF_KLMD_SHA_512:
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/* The SHA512 parmblock has a 128-bit mbl field. */
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if (ctx->count < len)
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ctx->sha512.count_hi++;
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ctx->sha512.count_hi <<= 3;
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ctx->sha512.count_hi |= ctx->count >> 61;
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mbl_offset += sizeof(u64) / sizeof(u32);
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fallthrough;
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case CPACF_KLMD_SHA_1:
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case CPACF_KLMD_SHA_256:
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memcpy(ctx->state + mbl_offset, &bits, sizeof(bits));
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break;
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case CPACF_KLMD_SHA3_224:
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case CPACF_KLMD_SHA3_256:
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case CPACF_KLMD_SHA3_384:
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case CPACF_KLMD_SHA3_512:
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break;
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default:
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return -EINVAL;
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}
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fc = ctx->func;
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fc |= test_facility(86) ? CPACF_KLMD_DUFOP : 0;
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if (ctx->first_message_part)
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fc |= CPACF_KLMD_NIP;
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cpacf_klmd(fc, ctx->state, src, len);
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/* copy digest to out */
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memcpy(out, ctx->state, crypto_shash_digestsize(desc->tfm));
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return 0;
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}
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EXPORT_SYMBOL_GPL(s390_sha_finup);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("s390 SHA cipher common functions");
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