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Diffstat (limited to 'arch/s390/crypto/sha1_s390.c')
-rw-r--r--arch/s390/crypto/sha1_s390.c177
1 files changed, 59 insertions, 118 deletions
diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index 98c896b86dc..a1b3a9dc9d8 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -8,10 +8,11 @@
* implementation written by Steve Reid.
*
* s390 Version:
- * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation
- * Author(s): Thomas Spatzier (tspat@de.ibm.com)
+ * Copyright IBM Corp. 2003, 2007
+ * Author(s): Thomas Spatzier
+ * Jan Glauber (jan.glauber@de.ibm.com)
*
- * Derived from "crypto/sha1.c"
+ * Derived from "crypto/sha1_generic.c"
* Copyright (c) Alan Smithee.
* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
* Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
@@ -22,146 +23,86 @@
* any later version.
*
*/
+#include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/crypto.h>
-#include <asm/scatterlist.h>
-#include <asm/byteorder.h>
-#include "crypt_s390.h"
-
-#define SHA1_DIGEST_SIZE 20
-#define SHA1_BLOCK_SIZE 64
+#include <crypto/sha.h>
-struct crypt_s390_sha1_ctx {
- u64 count;
- u32 state[5];
- u32 buf_len;
- u8 buffer[2 * SHA1_BLOCK_SIZE];
-};
-
-static void
-sha1_init(void *ctx)
-{
- static const struct crypt_s390_sha1_ctx initstate = {
- .state = {
- 0x67452301,
- 0xEFCDAB89,
- 0x98BADCFE,
- 0x10325476,
- 0xC3D2E1F0
- },
- };
- memcpy(ctx, &initstate, sizeof(initstate));
-}
+#include "crypt_s390.h"
+#include "sha.h"
-static void
-sha1_update(void *ctx, const u8 *data, unsigned int len)
+static int sha1_init(struct shash_desc *desc)
{
- struct crypt_s390_sha1_ctx *sctx;
- long imd_len;
+ struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
- sctx = ctx;
- sctx->count += len * 8; //message bit length
-
- //anything in buffer yet? -> must be completed
- if (sctx->buf_len && (sctx->buf_len + len) >= SHA1_BLOCK_SIZE) {
- //complete full block and hash
- memcpy(sctx->buffer + sctx->buf_len, data,
- SHA1_BLOCK_SIZE - sctx->buf_len);
- crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buffer,
- SHA1_BLOCK_SIZE);
- data += SHA1_BLOCK_SIZE - sctx->buf_len;
- len -= SHA1_BLOCK_SIZE - sctx->buf_len;
- sctx->buf_len = 0;
- }
+ sctx->state[0] = SHA1_H0;
+ sctx->state[1] = SHA1_H1;
+ sctx->state[2] = SHA1_H2;
+ sctx->state[3] = SHA1_H3;
+ sctx->state[4] = SHA1_H4;
+ sctx->count = 0;
+ sctx->func = KIMD_SHA_1;
- //rest of data contains full blocks?
- imd_len = len & ~0x3ful;
- if (imd_len){
- crypt_s390_kimd(KIMD_SHA_1, sctx->state, data, imd_len);
- data += imd_len;
- len -= imd_len;
- }
- //anything left? store in buffer
- if (len){
- memcpy(sctx->buffer + sctx->buf_len , data, len);
- sctx->buf_len += len;
- }
+ return 0;
}
-
-static void
-pad_message(struct crypt_s390_sha1_ctx* sctx)
+static int sha1_export(struct shash_desc *desc, void *out)
{
- int index;
+ struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
+ struct sha1_state *octx = out;
- index = sctx->buf_len;
- sctx->buf_len = (sctx->buf_len < 56)?
- SHA1_BLOCK_SIZE:2 * SHA1_BLOCK_SIZE;
- //start pad with 1
- sctx->buffer[index] = 0x80;
- //pad with zeros
- index++;
- memset(sctx->buffer + index, 0x00, sctx->buf_len - index);
- //append length
- memcpy(sctx->buffer + sctx->buf_len - 8, &sctx->count,
- sizeof sctx->count);
+ octx->count = sctx->count;
+ memcpy(octx->state, sctx->state, sizeof(octx->state));
+ memcpy(octx->buffer, sctx->buf, sizeof(octx->buffer));
+ return 0;
}
-/* Add padding and return the message digest. */
-static void
-sha1_final(void* ctx, u8 *out)
+static int sha1_import(struct shash_desc *desc, const void *in)
{
- struct crypt_s390_sha1_ctx *sctx = ctx;
-
- //must perform manual padding
- pad_message(sctx);
- crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buffer, sctx->buf_len);
- //copy digest to out
- memcpy(out, sctx->state, SHA1_DIGEST_SIZE);
- /* Wipe context */
- memset(sctx, 0, sizeof *sctx);
+ struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
+ const struct sha1_state *ictx = in;
+
+ sctx->count = ictx->count;
+ memcpy(sctx->state, ictx->state, sizeof(ictx->state));
+ memcpy(sctx->buf, ictx->buffer, sizeof(ictx->buffer));
+ sctx->func = KIMD_SHA_1;
+ return 0;
}
-static struct crypto_alg alg = {
- .cra_name = "sha1",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = SHA1_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct crypt_s390_sha1_ctx),
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(alg.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = SHA1_DIGEST_SIZE,
- .dia_init = sha1_init,
- .dia_update = sha1_update,
- .dia_final = sha1_final } }
+static struct shash_alg alg = {
+ .digestsize = SHA1_DIGEST_SIZE,
+ .init = sha1_init,
+ .update = s390_sha_update,
+ .final = s390_sha_final,
+ .export = sha1_export,
+ .import = sha1_import,
+ .descsize = sizeof(struct s390_sha_ctx),
+ .statesize = sizeof(struct sha1_state),
+ .base = {
+ .cra_name = "sha1",
+ .cra_driver_name= "sha1-s390",
+ .cra_priority = CRYPT_S390_PRIORITY,
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA1_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
};
-static int
-init(void)
+static int __init sha1_s390_init(void)
{
- int ret = -ENOSYS;
-
- if (crypt_s390_func_available(KIMD_SHA_1)){
- ret = crypto_register_alg(&alg);
- if (ret == 0){
- printk(KERN_INFO "crypt_s390: sha1_s390 loaded.\n");
- }
- }
- return ret;
+ if (!crypt_s390_func_available(KIMD_SHA_1, CRYPT_S390_MSA))
+ return -EOPNOTSUPP;
+ return crypto_register_shash(&alg);
}
-static void __exit
-fini(void)
+static void __exit sha1_s390_fini(void)
{
- crypto_unregister_alg(&alg);
+ crypto_unregister_shash(&alg);
}
-module_init(init);
-module_exit(fini);
+module_init(sha1_s390_init);
+module_exit(sha1_s390_fini);
MODULE_ALIAS("sha1");
-
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-14 09:19:57 +0000