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-rw-r--r--arch/s390/crypto/Makefile5
-rw-r--r--arch/s390/crypto/crypt_s390.h2
-rw-r--r--arch/s390/crypto/sha.h35
-rw-r--r--arch/s390/crypto/sha1_s390.c91
-rw-r--r--arch/s390/crypto/sha256_s390.c90
-rw-r--r--arch/s390/crypto/sha512_s390.c114
-rw-r--r--arch/s390/crypto/sha_common.c97
7 files changed, 263 insertions, 171 deletions
diff --git a/arch/s390/crypto/Makefile b/arch/s390/crypto/Makefile
index 14e552c5cc43..6a1157fa4f98 100644
--- a/arch/s390/crypto/Makefile
+++ b/arch/s390/crypto/Makefile
@@ -2,8 +2,9 @@
2# Cryptographic API 2# Cryptographic API
3# 3#
4 4
5obj-$(CONFIG_CRYPTO_SHA1_S390) += sha1_s390.o 5obj-$(CONFIG_CRYPTO_SHA1_S390) += sha1_s390.o sha_common.o
6obj-$(CONFIG_CRYPTO_SHA256_S390) += sha256_s390.o 6obj-$(CONFIG_CRYPTO_SHA256_S390) += sha256_s390.o sha_common.o
7obj-$(CONFIG_CRYPTO_SHA512_S390) += sha512_s390.o sha_common.o
7obj-$(CONFIG_CRYPTO_DES_S390) += des_s390.o des_check_key.o 8obj-$(CONFIG_CRYPTO_DES_S390) += des_s390.o des_check_key.o
8obj-$(CONFIG_CRYPTO_AES_S390) += aes_s390.o 9obj-$(CONFIG_CRYPTO_AES_S390) += aes_s390.o
9obj-$(CONFIG_S390_PRNG) += prng.o 10obj-$(CONFIG_S390_PRNG) += prng.o
diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index 95f5160df27f..9992f95ef992 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -82,6 +82,7 @@ enum crypt_s390_kimd_func {
82 KIMD_QUERY = CRYPT_S390_KIMD | 0, 82 KIMD_QUERY = CRYPT_S390_KIMD | 0,
83 KIMD_SHA_1 = CRYPT_S390_KIMD | 1, 83 KIMD_SHA_1 = CRYPT_S390_KIMD | 1,
84 KIMD_SHA_256 = CRYPT_S390_KIMD | 2, 84 KIMD_SHA_256 = CRYPT_S390_KIMD | 2,
85 KIMD_SHA_512 = CRYPT_S390_KIMD | 3,
85}; 86};
86 87
87/* 88/*
@@ -92,6 +93,7 @@ enum crypt_s390_klmd_func {
92 KLMD_QUERY = CRYPT_S390_KLMD | 0, 93 KLMD_QUERY = CRYPT_S390_KLMD | 0,
93 KLMD_SHA_1 = CRYPT_S390_KLMD | 1, 94 KLMD_SHA_1 = CRYPT_S390_KLMD | 1,
94 KLMD_SHA_256 = CRYPT_S390_KLMD | 2, 95 KLMD_SHA_256 = CRYPT_S390_KLMD | 2,
96 KLMD_SHA_512 = CRYPT_S390_KLMD | 3,
95}; 97};
96 98
97/* 99/*
diff --git a/arch/s390/crypto/sha.h b/arch/s390/crypto/sha.h
new file mode 100644
index 000000000000..1ceafa571eab
--- /dev/null
+++ b/arch/s390/crypto/sha.h
@@ -0,0 +1,35 @@
1/*
2 * Cryptographic API.
3 *
4 * s390 generic implementation of the SHA Secure Hash Algorithms.
5 *
6 * Copyright IBM Corp. 2007
7 * Author(s): Jan Glauber (jang@de.ibm.com)
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 */
15#ifndef _CRYPTO_ARCH_S390_SHA_H
16#define _CRYPTO_ARCH_S390_SHA_H
17
18#include <linux/crypto.h>
19#include <crypto/sha.h>
20
21/* must be big enough for the largest SHA variant */
22#define SHA_MAX_STATE_SIZE 16
23#define SHA_MAX_BLOCK_SIZE SHA512_BLOCK_SIZE
24
25struct s390_sha_ctx {
26 u64 count; /* message length in bytes */
27 u32 state[SHA_MAX_STATE_SIZE];
28 u8 buf[2 * SHA_MAX_BLOCK_SIZE];
29 int func; /* KIMD function to use */
30};
31
32void s390_sha_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len);
33void s390_sha_final(struct crypto_tfm *tfm, u8 *out);
34
35#endif
diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index 9cf9eca22747..b3cb5a89b00d 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -29,16 +29,11 @@
29#include <crypto/sha.h> 29#include <crypto/sha.h>
30 30
31#include "crypt_s390.h" 31#include "crypt_s390.h"
32 32#include "sha.h"
33struct s390_sha1_ctx {
34 u64 count; /* message length */
35 u32 state[5];
36 u8 buf[2 * SHA1_BLOCK_SIZE];
37};
38 33
39static void sha1_init(struct crypto_tfm *tfm) 34static void sha1_init(struct crypto_tfm *tfm)
40{ 35{
41 struct s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm); 36 struct s390_sha_ctx *sctx = crypto_tfm_ctx(tfm);
42 37
43 sctx->state[0] = SHA1_H0; 38 sctx->state[0] = SHA1_H0;
44 sctx->state[1] = SHA1_H1; 39 sctx->state[1] = SHA1_H1;
@@ -46,79 +41,7 @@ static void sha1_init(struct crypto_tfm *tfm)
46 sctx->state[3] = SHA1_H3; 41 sctx->state[3] = SHA1_H3;
47 sctx->state[4] = SHA1_H4; 42 sctx->state[4] = SHA1_H4;
48 sctx->count = 0; 43 sctx->count = 0;
49} 44 sctx->func = KIMD_SHA_1;
50
51static void sha1_update(struct crypto_tfm *tfm, const u8 *data,
52 unsigned int len)
53{
54 struct s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm);
55 unsigned int index;
56 int ret;
57
58 /* how much is already in the buffer? */
59 index = sctx->count & 0x3f;
60
61 sctx->count += len;
62
63 if (index + len < SHA1_BLOCK_SIZE)
64 goto store;
65
66 /* process one stored block */
67 if (index) {
68 memcpy(sctx->buf + index, data, SHA1_BLOCK_SIZE - index);
69 ret = crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buf,
70 SHA1_BLOCK_SIZE);
71 BUG_ON(ret != SHA1_BLOCK_SIZE);
72 data += SHA1_BLOCK_SIZE - index;
73 len -= SHA1_BLOCK_SIZE - index;
74 }
75
76 /* process as many blocks as possible */
77 if (len >= SHA1_BLOCK_SIZE) {
78 ret = crypt_s390_kimd(KIMD_SHA_1, sctx->state, data,
79 len & ~(SHA1_BLOCK_SIZE - 1));
80 BUG_ON(ret != (len & ~(SHA1_BLOCK_SIZE - 1)));
81 data += ret;
82 len -= ret;
83 }
84
85store:
86 /* anything left? */
87 if (len)
88 memcpy(sctx->buf + index , data, len);
89}
90
91/* Add padding and return the message digest. */
92static void sha1_final(struct crypto_tfm *tfm, u8 *out)
93{
94 struct s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm);
95 u64 bits;
96 unsigned int index, end;
97 int ret;
98
99 /* must perform manual padding */
100 index = sctx->count & 0x3f;
101 end = (index < 56) ? SHA1_BLOCK_SIZE : (2 * SHA1_BLOCK_SIZE);
102
103 /* start pad with 1 */
104 sctx->buf[index] = 0x80;
105
106 /* pad with zeros */
107 index++;
108 memset(sctx->buf + index, 0x00, end - index - 8);
109
110 /* append message length */
111 bits = sctx->count * 8;
112 memcpy(sctx->buf + end - 8, &bits, sizeof(bits));
113
114 ret = crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buf, end);
115 BUG_ON(ret != end);
116
117 /* copy digest to out */
118 memcpy(out, sctx->state, SHA1_DIGEST_SIZE);
119
120 /* wipe context */
121 memset(sctx, 0, sizeof *sctx);
122} 45}
123 46
124static struct crypto_alg alg = { 47static struct crypto_alg alg = {
@@ -127,21 +50,20 @@ static struct crypto_alg alg = {
127 .cra_priority = CRYPT_S390_PRIORITY, 50 .cra_priority = CRYPT_S390_PRIORITY,
128 .cra_flags = CRYPTO_ALG_TYPE_DIGEST, 51 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
129 .cra_blocksize = SHA1_BLOCK_SIZE, 52 .cra_blocksize = SHA1_BLOCK_SIZE,
130 .cra_ctxsize = sizeof(struct s390_sha1_ctx), 53 .cra_ctxsize = sizeof(struct s390_sha_ctx),
131 .cra_module = THIS_MODULE, 54 .cra_module = THIS_MODULE,
132 .cra_list = LIST_HEAD_INIT(alg.cra_list), 55 .cra_list = LIST_HEAD_INIT(alg.cra_list),
133 .cra_u = { .digest = { 56 .cra_u = { .digest = {
134 .dia_digestsize = SHA1_DIGEST_SIZE, 57 .dia_digestsize = SHA1_DIGEST_SIZE,
135 .dia_init = sha1_init, 58 .dia_init = sha1_init,
136 .dia_update = sha1_update, 59 .dia_update = s390_sha_update,
137 .dia_final = sha1_final } } 60 .dia_final = s390_sha_final } }
138}; 61};
139 62
140static int __init sha1_s390_init(void) 63static int __init sha1_s390_init(void)
141{ 64{
142 if (!crypt_s390_func_available(KIMD_SHA_1)) 65 if (!crypt_s390_func_available(KIMD_SHA_1))
143 return -EOPNOTSUPP; 66 return -EOPNOTSUPP;
144
145 return crypto_register_alg(&alg); 67 return crypto_register_alg(&alg);
146} 68}
147 69
@@ -154,6 +76,5 @@ module_init(sha1_s390_init);
154module_exit(sha1_s390_fini); 76module_exit(sha1_s390_fini);
155 77
156MODULE_ALIAS("sha1"); 78MODULE_ALIAS("sha1");
157
158MODULE_LICENSE("GPL"); 79MODULE_LICENSE("GPL");
159MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm"); 80MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");
diff --git a/arch/s390/crypto/sha256_s390.c b/arch/s390/crypto/sha256_s390.c
index 2a3d756b35d4..19c03fb6ba7e 100644
--- a/arch/s390/crypto/sha256_s390.c
+++ b/arch/s390/crypto/sha256_s390.c
@@ -22,16 +22,11 @@
22#include <crypto/sha.h> 22#include <crypto/sha.h>
23 23
24#include "crypt_s390.h" 24#include "crypt_s390.h"
25 25#include "sha.h"
26struct s390_sha256_ctx {
27 u64 count; /* message length */
28 u32 state[8];
29 u8 buf[2 * SHA256_BLOCK_SIZE];
30};
31 26
32static void sha256_init(struct crypto_tfm *tfm) 27static void sha256_init(struct crypto_tfm *tfm)
33{ 28{
34 struct s390_sha256_ctx *sctx = crypto_tfm_ctx(tfm); 29 struct s390_sha_ctx *sctx = crypto_tfm_ctx(tfm);
35 30
36 sctx->state[0] = SHA256_H0; 31 sctx->state[0] = SHA256_H0;
37 sctx->state[1] = SHA256_H1; 32 sctx->state[1] = SHA256_H1;
@@ -42,79 +37,7 @@ static void sha256_init(struct crypto_tfm *tfm)
42 sctx->state[6] = SHA256_H6; 37 sctx->state[6] = SHA256_H6;
43 sctx->state[7] = SHA256_H7; 38 sctx->state[7] = SHA256_H7;
44 sctx->count = 0; 39 sctx->count = 0;
45} 40 sctx->func = KIMD_SHA_256;
46
47static void sha256_update(struct crypto_tfm *tfm, const u8 *data,
48 unsigned int len)
49{
50 struct s390_sha256_ctx *sctx = crypto_tfm_ctx(tfm);
51 unsigned int index;
52 int ret;
53
54 /* how much is already in the buffer? */
55 index = sctx->count & 0x3f;
56
57 sctx->count += len;
58
59 if ((index + len) < SHA256_BLOCK_SIZE)
60 goto store;
61
62 /* process one stored block */
63 if (index) {
64 memcpy(sctx->buf + index, data, SHA256_BLOCK_SIZE - index);
65 ret = crypt_s390_kimd(KIMD_SHA_256, sctx->state, sctx->buf,
66 SHA256_BLOCK_SIZE);
67 BUG_ON(ret != SHA256_BLOCK_SIZE);
68 data += SHA256_BLOCK_SIZE - index;
69 len -= SHA256_BLOCK_SIZE - index;
70 }
71
72 /* process as many blocks as possible */
73 if (len >= SHA256_BLOCK_SIZE) {
74 ret = crypt_s390_kimd(KIMD_SHA_256, sctx->state, data,
75 len & ~(SHA256_BLOCK_SIZE - 1));
76 BUG_ON(ret != (len & ~(SHA256_BLOCK_SIZE - 1)));
77 data += ret;
78 len -= ret;
79 }
80
81store:
82 /* anything left? */
83 if (len)
84 memcpy(sctx->buf + index , data, len);
85}
86
87/* Add padding and return the message digest */
88static void sha256_final(struct crypto_tfm *tfm, u8 *out)
89{
90 struct s390_sha256_ctx *sctx = crypto_tfm_ctx(tfm);
91 u64 bits;
92 unsigned int index, end;
93 int ret;
94
95 /* must perform manual padding */
96 index = sctx->count & 0x3f;
97 end = (index < 56) ? SHA256_BLOCK_SIZE : (2 * SHA256_BLOCK_SIZE);
98
99 /* start pad with 1 */
100 sctx->buf[index] = 0x80;
101
102 /* pad with zeros */
103 index++;
104 memset(sctx->buf + index, 0x00, end - index - 8);
105
106 /* append message length */
107 bits = sctx->count * 8;
108 memcpy(sctx->buf + end - 8, &bits, sizeof(bits));
109
110 ret = crypt_s390_kimd(KIMD_SHA_256, sctx->state, sctx->buf, end);
111 BUG_ON(ret != end);
112
113 /* copy digest to out */
114 memcpy(out, sctx->state, SHA256_DIGEST_SIZE);
115
116 /* wipe context */
117 memset(sctx, 0, sizeof *sctx);
118} 41}
119 42
120static struct crypto_alg alg = { 43static struct crypto_alg alg = {
@@ -123,14 +46,14 @@ static struct crypto_alg alg = {
123 .cra_priority = CRYPT_S390_PRIORITY, 46 .cra_priority = CRYPT_S390_PRIORITY,
124 .cra_flags = CRYPTO_ALG_TYPE_DIGEST, 47 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
125 .cra_blocksize = SHA256_BLOCK_SIZE, 48 .cra_blocksize = SHA256_BLOCK_SIZE,
126 .cra_ctxsize = sizeof(struct s390_sha256_ctx), 49 .cra_ctxsize = sizeof(struct s390_sha_ctx),
127 .cra_module = THIS_MODULE, 50 .cra_module = THIS_MODULE,
128 .cra_list = LIST_HEAD_INIT(alg.cra_list), 51 .cra_list = LIST_HEAD_INIT(alg.cra_list),
129 .cra_u = { .digest = { 52 .cra_u = { .digest = {
130 .dia_digestsize = SHA256_DIGEST_SIZE, 53 .dia_digestsize = SHA256_DIGEST_SIZE,
131 .dia_init = sha256_init, 54 .dia_init = sha256_init,
132 .dia_update = sha256_update, 55 .dia_update = s390_sha_update,
133 .dia_final = sha256_final } } 56 .dia_final = s390_sha_final } }
134}; 57};
135 58
136static int sha256_s390_init(void) 59static int sha256_s390_init(void)
@@ -150,6 +73,5 @@ module_init(sha256_s390_init);
150module_exit(sha256_s390_fini); 73module_exit(sha256_s390_fini);
151 74
152MODULE_ALIAS("sha256"); 75MODULE_ALIAS("sha256");
153
154MODULE_LICENSE("GPL"); 76MODULE_LICENSE("GPL");
155MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm"); 77MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm");
diff --git a/arch/s390/crypto/sha512_s390.c b/arch/s390/crypto/sha512_s390.c
new file mode 100644
index 000000000000..23c7861f6aeb
--- /dev/null
+++ b/arch/s390/crypto/sha512_s390.c
@@ -0,0 +1,114 @@
1/*
2 * Cryptographic API.
3 *
4 * s390 implementation of the SHA512 and SHA38 Secure Hash Algorithm.
5 *
6 * Copyright IBM Corp. 2007
7 * Author(s): Jan Glauber (jang@de.ibm.com)
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 */
15#include <linux/init.h>
16#include <linux/module.h>
17#include <linux/crypto.h>
18
19#include "sha.h"
20#include "crypt_s390.h"
21
22static void sha512_init(struct crypto_tfm *tfm)
23{
24 struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
25
26 *(__u64 *)&ctx->state[0] = 0x6a09e667f3bcc908ULL;
27 *(__u64 *)&ctx->state[2] = 0xbb67ae8584caa73bULL;
28 *(__u64 *)&ctx->state[4] = 0x3c6ef372fe94f82bULL;
29 *(__u64 *)&ctx->state[6] = 0xa54ff53a5f1d36f1ULL;
30 *(__u64 *)&ctx->state[8] = 0x510e527fade682d1ULL;
31 *(__u64 *)&ctx->state[10] = 0x9b05688c2b3e6c1fULL;
32 *(__u64 *)&ctx->state[12] = 0x1f83d9abfb41bd6bULL;
33 *(__u64 *)&ctx->state[14] = 0x5be0cd19137e2179ULL;
34 ctx->count = 0;
35 ctx->func = KIMD_SHA_512;
36}
37
38static struct crypto_alg sha512_alg = {
39 .cra_name = "sha512",
40 .cra_driver_name = "sha512-s390",
41 .cra_priority = CRYPT_S390_PRIORITY,
42 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
43 .cra_blocksize = SHA512_BLOCK_SIZE,
44 .cra_ctxsize = sizeof(struct s390_sha_ctx),
45 .cra_module = THIS_MODULE,
46 .cra_list = LIST_HEAD_INIT(sha512_alg.cra_list),
47 .cra_u = { .digest = {
48 .dia_digestsize = SHA512_DIGEST_SIZE,
49 .dia_init = sha512_init,
50 .dia_update = s390_sha_update,
51 .dia_final = s390_sha_final } }
52};
53
54MODULE_ALIAS("sha512");
55
56static void sha384_init(struct crypto_tfm *tfm)
57{
58 struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
59
60 *(__u64 *)&ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
61 *(__u64 *)&ctx->state[2] = 0x629a292a367cd507ULL;
62 *(__u64 *)&ctx->state[4] = 0x9159015a3070dd17ULL;
63 *(__u64 *)&ctx->state[6] = 0x152fecd8f70e5939ULL;
64 *(__u64 *)&ctx->state[8] = 0x67332667ffc00b31ULL;
65 *(__u64 *)&ctx->state[10] = 0x8eb44a8768581511ULL;
66 *(__u64 *)&ctx->state[12] = 0xdb0c2e0d64f98fa7ULL;
67 *(__u64 *)&ctx->state[14] = 0x47b5481dbefa4fa4ULL;
68 ctx->count = 0;
69 ctx->func = KIMD_SHA_512;
70}
71
72static struct crypto_alg sha384_alg = {
73 .cra_name = "sha384",
74 .cra_driver_name = "sha384-s390",
75 .cra_priority = CRYPT_S390_PRIORITY,
76 .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
77 .cra_blocksize = SHA384_BLOCK_SIZE,
78 .cra_ctxsize = sizeof(struct s390_sha_ctx),
79 .cra_module = THIS_MODULE,
80 .cra_list = LIST_HEAD_INIT(sha384_alg.cra_list),
81 .cra_u = { .digest = {
82 .dia_digestsize = SHA384_DIGEST_SIZE,
83 .dia_init = sha384_init,
84 .dia_update = s390_sha_update,
85 .dia_final = s390_sha_final } }
86};
87
88MODULE_ALIAS("sha384");
89
90static int __init init(void)
91{
92 int ret;
93
94 if (!crypt_s390_func_available(KIMD_SHA_512))
95 return -EOPNOTSUPP;
96 if ((ret = crypto_register_alg(&sha512_alg)) < 0)
97 goto out;
98 if ((ret = crypto_register_alg(&sha384_alg)) < 0)
99 crypto_unregister_alg(&sha512_alg);
100out:
101 return ret;
102}
103
104static void __exit fini(void)
105{
106 crypto_unregister_alg(&sha512_alg);
107 crypto_unregister_alg(&sha384_alg);
108}
109
110module_init(init);
111module_exit(fini);
112
113MODULE_LICENSE("GPL");
114MODULE_DESCRIPTION("SHA512 and SHA-384 Secure Hash Algorithm");
diff --git a/arch/s390/crypto/sha_common.c b/arch/s390/crypto/sha_common.c
new file mode 100644
index 000000000000..9d6eb8c3d37e
--- /dev/null
+++ b/arch/s390/crypto/sha_common.c
@@ -0,0 +1,97 @@
1/*
2 * Cryptographic API.
3 *
4 * s390 generic implementation of the SHA Secure Hash Algorithms.
5 *
6 * Copyright IBM Corp. 2007
7 * Author(s): Jan Glauber (jang@de.ibm.com)
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 */
15
16#include <linux/crypto.h>
17#include "sha.h"
18#include "crypt_s390.h"
19
20void s390_sha_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len)
21{
22 struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
23 unsigned int bsize = crypto_tfm_alg_blocksize(tfm);
24 unsigned int index;
25 int ret;
26
27 /* how much is already in the buffer? */
28 index = ctx->count & (bsize - 1);
29 ctx->count += len;
30
31 if ((index + len) < bsize)
32 goto store;
33
34 /* process one stored block */
35 if (index) {
36 memcpy(ctx->buf + index, data, bsize - index);
37 ret = crypt_s390_kimd(ctx->func, ctx->state, ctx->buf, bsize);
38 BUG_ON(ret != bsize);
39 data += bsize - index;
40 len -= bsize - index;
41 }
42
43 /* process as many blocks as possible */
44 if (len >= bsize) {
45 ret = crypt_s390_kimd(ctx->func, ctx->state, data,
46 len & ~(bsize - 1));
47 BUG_ON(ret != (len & ~(bsize - 1)));
48 data += ret;
49 len -= ret;
50 }
51store:
52 if (len)
53 memcpy(ctx->buf + index , data, len);
54}
55EXPORT_SYMBOL_GPL(s390_sha_update);
56
57void s390_sha_final(struct crypto_tfm *tfm, u8 *out)
58{
59 struct s390_sha_ctx *ctx = crypto_tfm_ctx(tfm);
60 unsigned int bsize = crypto_tfm_alg_blocksize(tfm);
61 u64 bits;
62 unsigned int index, end, plen;
63 int ret;
64
65 /* SHA-512 uses 128 bit padding length */
66 plen = (bsize > SHA256_BLOCK_SIZE) ? 16 : 8;
67
68 /* must perform manual padding */
69 index = ctx->count & (bsize - 1);
70 end = (index < bsize - plen) ? bsize : (2 * bsize);
71
72 /* start pad with 1 */
73 ctx->buf[index] = 0x80;
74 index++;
75
76 /* pad with zeros */
77 memset(ctx->buf + index, 0x00, end - index - 8);
78
79 /*
80 * Append message length. Well, SHA-512 wants a 128 bit lenght value,
81 * nevertheless we use u64, should be enough for now...
82 */
83 bits = ctx->count * 8;
84 memcpy(ctx->buf + end - 8, &bits, sizeof(bits));
85
86 ret = crypt_s390_kimd(ctx->func, ctx->state, ctx->buf, end);
87 BUG_ON(ret != end);
88
89 /* copy digest to out */
90 memcpy(out, ctx->state, crypto_hash_digestsize(crypto_hash_cast(tfm)));
91 /* wipe context */
92 memset(ctx, 0, sizeof *ctx);
93}
94EXPORT_SYMBOL_GPL(s390_sha_final);
95
96MODULE_LICENSE("GPL");
97MODULE_DESCRIPTION("s390 SHA cipher common functions");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 21:37:06 -0500