Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Cryptographic API. |
| 3 | * |
Jan Glauber | c1e26e1 | 2006-01-06 00:19:17 -0800 | [diff] [blame] | 4 | * s390 implementation of the DES Cipher Algorithm. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * |
Jan Glauber | 86aa9fc | 2007-02-05 21:18:14 +0100 | [diff] [blame] | 6 | * Copyright IBM Corp. 2003,2007 |
| 7 | * Author(s): Thomas Spatzier |
| 8 | * Jan Glauber (jan.glauber@de.ibm.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | */ |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 16 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/init.h> |
| 18 | #include <linux/module.h> |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 19 | #include <linux/crypto.h> |
| 20 | #include <crypto/algapi.h> |
| 21 | #include <crypto/des.h> |
Jan Glauber | c135783 | 2006-01-14 13:20:53 -0800 | [diff] [blame] | 22 | |
Jan Glauber | c1e26e1 | 2006-01-06 00:19:17 -0800 | [diff] [blame] | 23 | #include "crypt_s390.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 25 | #define DES3_KEY_SIZE (3 * DES_KEY_SIZE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 27 | struct s390_des_ctx { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | u8 iv[DES_BLOCK_SIZE]; |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 29 | u8 key[DES3_KEY_SIZE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | }; |
| 31 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 32 | static int des_setkey(struct crypto_tfm *tfm, const u8 *key, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 33 | unsigned int key_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 35 | struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); |
Herbert Xu | 560c06a | 2006-08-13 14:16:39 +1000 | [diff] [blame] | 36 | u32 *flags = &tfm->crt_flags; |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 37 | u32 tmp[DES_EXPKEY_WORDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 39 | /* check for weak keys */ |
| 40 | if (!des_ekey(tmp, key) && (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { |
| 41 | *flags |= CRYPTO_TFM_RES_WEAK_KEY; |
| 42 | return -EINVAL; |
| 43 | } |
| 44 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 45 | memcpy(ctx->key, key, key_len); |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 46 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | } |
| 48 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 49 | static void des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 51 | struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 53 | crypt_s390_km(KM_DEA_ENCRYPT, ctx->key, out, in, DES_BLOCK_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | } |
| 55 | |
Herbert Xu | 6c2bb98 | 2006-05-16 22:09:29 +1000 | [diff] [blame] | 56 | static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 58 | struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 60 | crypt_s390_km(KM_DEA_DECRYPT, ctx->key, out, in, DES_BLOCK_SIZE); |
Jan Glauber | b8dc603 | 2006-01-14 13:20:53 -0800 | [diff] [blame] | 61 | } |
| 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | static struct crypto_alg des_alg = { |
| 64 | .cra_name = "des", |
Herbert Xu | 65b75c3 | 2006-08-21 21:18:50 +1000 | [diff] [blame] | 65 | .cra_driver_name = "des-s390", |
| 66 | .cra_priority = CRYPT_S390_PRIORITY, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
| 68 | .cra_blocksize = DES_BLOCK_SIZE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 69 | .cra_ctxsize = sizeof(struct s390_des_ctx), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | .cra_module = THIS_MODULE, |
| 71 | .cra_list = LIST_HEAD_INIT(des_alg.cra_list), |
Jan Glauber | c135783 | 2006-01-14 13:20:53 -0800 | [diff] [blame] | 72 | .cra_u = { |
| 73 | .cipher = { |
| 74 | .cia_min_keysize = DES_KEY_SIZE, |
| 75 | .cia_max_keysize = DES_KEY_SIZE, |
| 76 | .cia_setkey = des_setkey, |
| 77 | .cia_encrypt = des_encrypt, |
Jan Glauber | b8dc603 | 2006-01-14 13:20:53 -0800 | [diff] [blame] | 78 | .cia_decrypt = des_decrypt, |
Jan Glauber | c135783 | 2006-01-14 13:20:53 -0800 | [diff] [blame] | 79 | } |
| 80 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | }; |
| 82 | |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 83 | static int ecb_desall_crypt(struct blkcipher_desc *desc, long func, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 84 | u8 *key, struct blkcipher_walk *walk) |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 85 | { |
| 86 | int ret = blkcipher_walk_virt(desc, walk); |
| 87 | unsigned int nbytes; |
| 88 | |
| 89 | while ((nbytes = walk->nbytes)) { |
| 90 | /* only use complete blocks */ |
| 91 | unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1); |
| 92 | u8 *out = walk->dst.virt.addr; |
| 93 | u8 *in = walk->src.virt.addr; |
| 94 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 95 | ret = crypt_s390_km(func, key, out, in, n); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 96 | BUG_ON((ret < 0) || (ret != n)); |
| 97 | |
| 98 | nbytes &= DES_BLOCK_SIZE - 1; |
| 99 | ret = blkcipher_walk_done(desc, walk, nbytes); |
| 100 | } |
| 101 | |
| 102 | return ret; |
| 103 | } |
| 104 | |
| 105 | static int cbc_desall_crypt(struct blkcipher_desc *desc, long func, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 106 | u8 *iv, struct blkcipher_walk *walk) |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 107 | { |
| 108 | int ret = blkcipher_walk_virt(desc, walk); |
| 109 | unsigned int nbytes = walk->nbytes; |
| 110 | |
| 111 | if (!nbytes) |
| 112 | goto out; |
| 113 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 114 | memcpy(iv, walk->iv, DES_BLOCK_SIZE); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 115 | do { |
| 116 | /* only use complete blocks */ |
| 117 | unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1); |
| 118 | u8 *out = walk->dst.virt.addr; |
| 119 | u8 *in = walk->src.virt.addr; |
| 120 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 121 | ret = crypt_s390_kmc(func, iv, out, in, n); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 122 | BUG_ON((ret < 0) || (ret != n)); |
| 123 | |
| 124 | nbytes &= DES_BLOCK_SIZE - 1; |
| 125 | ret = blkcipher_walk_done(desc, walk, nbytes); |
| 126 | } while ((nbytes = walk->nbytes)); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 127 | memcpy(walk->iv, iv, DES_BLOCK_SIZE); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 128 | |
| 129 | out: |
| 130 | return ret; |
| 131 | } |
| 132 | |
| 133 | static int ecb_des_encrypt(struct blkcipher_desc *desc, |
| 134 | struct scatterlist *dst, struct scatterlist *src, |
| 135 | unsigned int nbytes) |
| 136 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 137 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 138 | struct blkcipher_walk walk; |
| 139 | |
| 140 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 141 | return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, ctx->key, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | static int ecb_des_decrypt(struct blkcipher_desc *desc, |
| 145 | struct scatterlist *dst, struct scatterlist *src, |
| 146 | unsigned int nbytes) |
| 147 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 148 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 149 | struct blkcipher_walk walk; |
| 150 | |
| 151 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 152 | return ecb_desall_crypt(desc, KM_DEA_DECRYPT, ctx->key, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | static struct crypto_alg ecb_des_alg = { |
| 156 | .cra_name = "ecb(des)", |
| 157 | .cra_driver_name = "ecb-des-s390", |
| 158 | .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, |
| 159 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
| 160 | .cra_blocksize = DES_BLOCK_SIZE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 161 | .cra_ctxsize = sizeof(struct s390_des_ctx), |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 162 | .cra_type = &crypto_blkcipher_type, |
| 163 | .cra_module = THIS_MODULE, |
| 164 | .cra_list = LIST_HEAD_INIT(ecb_des_alg.cra_list), |
| 165 | .cra_u = { |
| 166 | .blkcipher = { |
| 167 | .min_keysize = DES_KEY_SIZE, |
| 168 | .max_keysize = DES_KEY_SIZE, |
| 169 | .setkey = des_setkey, |
| 170 | .encrypt = ecb_des_encrypt, |
| 171 | .decrypt = ecb_des_decrypt, |
| 172 | } |
| 173 | } |
| 174 | }; |
| 175 | |
| 176 | static int cbc_des_encrypt(struct blkcipher_desc *desc, |
| 177 | struct scatterlist *dst, struct scatterlist *src, |
| 178 | unsigned int nbytes) |
| 179 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 180 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 181 | struct blkcipher_walk walk; |
| 182 | |
| 183 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 184 | return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, ctx->iv, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | static int cbc_des_decrypt(struct blkcipher_desc *desc, |
| 188 | struct scatterlist *dst, struct scatterlist *src, |
| 189 | unsigned int nbytes) |
| 190 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 191 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 192 | struct blkcipher_walk walk; |
| 193 | |
| 194 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 195 | return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, ctx->iv, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | static struct crypto_alg cbc_des_alg = { |
| 199 | .cra_name = "cbc(des)", |
| 200 | .cra_driver_name = "cbc-des-s390", |
| 201 | .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, |
| 202 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
| 203 | .cra_blocksize = DES_BLOCK_SIZE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 204 | .cra_ctxsize = sizeof(struct s390_des_ctx), |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 205 | .cra_type = &crypto_blkcipher_type, |
| 206 | .cra_module = THIS_MODULE, |
| 207 | .cra_list = LIST_HEAD_INIT(cbc_des_alg.cra_list), |
| 208 | .cra_u = { |
| 209 | .blkcipher = { |
| 210 | .min_keysize = DES_KEY_SIZE, |
| 211 | .max_keysize = DES_KEY_SIZE, |
| 212 | .ivsize = DES_BLOCK_SIZE, |
| 213 | .setkey = des_setkey, |
| 214 | .encrypt = cbc_des_encrypt, |
| 215 | .decrypt = cbc_des_decrypt, |
| 216 | } |
| 217 | } |
| 218 | }; |
| 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | /* |
| 221 | * RFC2451: |
| 222 | * |
| 223 | * For DES-EDE3, there is no known need to reject weak or |
| 224 | * complementation keys. Any weakness is obviated by the use of |
| 225 | * multiple keys. |
| 226 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | * However, if the first two or last two independent 64-bit keys are |
| 228 | * equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the |
| 229 | * same as DES. Implementers MUST reject keys that exhibit this |
| 230 | * property. |
| 231 | * |
| 232 | */ |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 233 | static int des3_setkey(struct crypto_tfm *tfm, const u8 *key, |
| 234 | unsigned int key_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 236 | struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); |
Herbert Xu | 560c06a | 2006-08-13 14:16:39 +1000 | [diff] [blame] | 237 | u32 *flags = &tfm->crt_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) && |
| 240 | memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2], |
Jarod Wilson | 03b56ce | 2009-06-18 19:52:59 +0800 | [diff] [blame] | 241 | DES_KEY_SIZE)) && |
| 242 | (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { |
| 243 | *flags |= CRYPTO_TFM_RES_WEAK_KEY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | return -EINVAL; |
| 245 | } |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 246 | memcpy(ctx->key, key, key_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | return 0; |
| 248 | } |
| 249 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 250 | static void des3_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 252 | struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 254 | crypt_s390_km(KM_TDEA_192_ENCRYPT, ctx->key, dst, src, DES_BLOCK_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | } |
| 256 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 257 | static void des3_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 259 | struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 261 | crypt_s390_km(KM_TDEA_192_DECRYPT, ctx->key, dst, src, DES_BLOCK_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | } |
| 263 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 264 | static struct crypto_alg des3_alg = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | .cra_name = "des3_ede", |
Herbert Xu | 65b75c3 | 2006-08-21 21:18:50 +1000 | [diff] [blame] | 266 | .cra_driver_name = "des3_ede-s390", |
| 267 | .cra_priority = CRYPT_S390_PRIORITY, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 269 | .cra_blocksize = DES_BLOCK_SIZE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 270 | .cra_ctxsize = sizeof(struct s390_des_ctx), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | .cra_module = THIS_MODULE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 272 | .cra_list = LIST_HEAD_INIT(des3_alg.cra_list), |
Jan Glauber | c135783 | 2006-01-14 13:20:53 -0800 | [diff] [blame] | 273 | .cra_u = { |
| 274 | .cipher = { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 275 | .cia_min_keysize = DES3_KEY_SIZE, |
| 276 | .cia_max_keysize = DES3_KEY_SIZE, |
| 277 | .cia_setkey = des3_setkey, |
| 278 | .cia_encrypt = des3_encrypt, |
| 279 | .cia_decrypt = des3_decrypt, |
Jan Glauber | c135783 | 2006-01-14 13:20:53 -0800 | [diff] [blame] | 280 | } |
| 281 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | }; |
| 283 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 284 | static int ecb_des3_encrypt(struct blkcipher_desc *desc, |
| 285 | struct scatterlist *dst, struct scatterlist *src, |
| 286 | unsigned int nbytes) |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 287 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 288 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 289 | struct blkcipher_walk walk; |
| 290 | |
| 291 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 292 | return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, ctx->key, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 293 | } |
| 294 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 295 | static int ecb_des3_decrypt(struct blkcipher_desc *desc, |
| 296 | struct scatterlist *dst, struct scatterlist *src, |
| 297 | unsigned int nbytes) |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 298 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 299 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 300 | struct blkcipher_walk walk; |
| 301 | |
| 302 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 303 | return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, ctx->key, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 304 | } |
| 305 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 306 | static struct crypto_alg ecb_des3_alg = { |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 307 | .cra_name = "ecb(des3_ede)", |
| 308 | .cra_driver_name = "ecb-des3_ede-s390", |
| 309 | .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, |
| 310 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 311 | .cra_blocksize = DES_BLOCK_SIZE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 312 | .cra_ctxsize = sizeof(struct s390_des_ctx), |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 313 | .cra_type = &crypto_blkcipher_type, |
| 314 | .cra_module = THIS_MODULE, |
| 315 | .cra_list = LIST_HEAD_INIT( |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 316 | ecb_des3_alg.cra_list), |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 317 | .cra_u = { |
| 318 | .blkcipher = { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 319 | .min_keysize = DES3_KEY_SIZE, |
| 320 | .max_keysize = DES3_KEY_SIZE, |
| 321 | .setkey = des3_setkey, |
| 322 | .encrypt = ecb_des3_encrypt, |
| 323 | .decrypt = ecb_des3_decrypt, |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 324 | } |
| 325 | } |
| 326 | }; |
| 327 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 328 | static int cbc_des3_encrypt(struct blkcipher_desc *desc, |
| 329 | struct scatterlist *dst, struct scatterlist *src, |
| 330 | unsigned int nbytes) |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 331 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 332 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 333 | struct blkcipher_walk walk; |
| 334 | |
| 335 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 336 | return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, ctx->iv, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 337 | } |
| 338 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 339 | static int cbc_des3_decrypt(struct blkcipher_desc *desc, |
| 340 | struct scatterlist *dst, struct scatterlist *src, |
| 341 | unsigned int nbytes) |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 342 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 343 | struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 344 | struct blkcipher_walk walk; |
| 345 | |
| 346 | blkcipher_walk_init(&walk, dst, src, nbytes); |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 347 | return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, ctx->iv, &walk); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 348 | } |
| 349 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 350 | static struct crypto_alg cbc_des3_alg = { |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 351 | .cra_name = "cbc(des3_ede)", |
| 352 | .cra_driver_name = "cbc-des3_ede-s390", |
| 353 | .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, |
| 354 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 355 | .cra_blocksize = DES_BLOCK_SIZE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 356 | .cra_ctxsize = sizeof(struct s390_des_ctx), |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 357 | .cra_type = &crypto_blkcipher_type, |
| 358 | .cra_module = THIS_MODULE, |
| 359 | .cra_list = LIST_HEAD_INIT( |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 360 | cbc_des3_alg.cra_list), |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 361 | .cra_u = { |
| 362 | .blkcipher = { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 363 | .min_keysize = DES3_KEY_SIZE, |
| 364 | .max_keysize = DES3_KEY_SIZE, |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 365 | .ivsize = DES_BLOCK_SIZE, |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 366 | .setkey = des3_setkey, |
| 367 | .encrypt = cbc_des3_encrypt, |
| 368 | .decrypt = cbc_des3_decrypt, |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 369 | } |
| 370 | } |
| 371 | }; |
| 372 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 373 | static int __init des_s390_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | { |
Jan Glauber | 80d663a | 2010-05-21 22:04:08 +1000 | [diff] [blame] | 375 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
Jan Glauber | 1822bc9 | 2011-04-19 21:29:14 +0200 | [diff] [blame] | 377 | if (!crypt_s390_func_available(KM_DEA_ENCRYPT, CRYPT_S390_MSA) || |
| 378 | !crypt_s390_func_available(KM_TDEA_192_ENCRYPT, CRYPT_S390_MSA)) |
Jan Glauber | 86aa9fc | 2007-02-05 21:18:14 +0100 | [diff] [blame] | 379 | return -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 381 | ret = crypto_register_alg(&des_alg); |
| 382 | if (ret) |
| 383 | goto des_err; |
| 384 | ret = crypto_register_alg(&ecb_des_alg); |
| 385 | if (ret) |
| 386 | goto ecb_des_err; |
| 387 | ret = crypto_register_alg(&cbc_des_alg); |
| 388 | if (ret) |
| 389 | goto cbc_des_err; |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 390 | ret = crypto_register_alg(&des3_alg); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 391 | if (ret) |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 392 | goto des3_err; |
| 393 | ret = crypto_register_alg(&ecb_des3_alg); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 394 | if (ret) |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 395 | goto ecb_des3_err; |
| 396 | ret = crypto_register_alg(&cbc_des3_alg); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 397 | if (ret) |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 398 | goto cbc_des3_err; |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 399 | out: |
| 400 | return ret; |
| 401 | |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 402 | cbc_des3_err: |
| 403 | crypto_unregister_alg(&ecb_des3_alg); |
| 404 | ecb_des3_err: |
| 405 | crypto_unregister_alg(&des3_alg); |
| 406 | des3_err: |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 407 | crypto_unregister_alg(&cbc_des_alg); |
| 408 | cbc_des_err: |
| 409 | crypto_unregister_alg(&ecb_des_alg); |
| 410 | ecb_des_err: |
| 411 | crypto_unregister_alg(&des_alg); |
| 412 | des_err: |
| 413 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | } |
| 415 | |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 416 | static void __exit des_s390_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | { |
Jan Glauber | 98971f8 | 2011-04-19 21:29:15 +0200 | [diff] [blame] | 418 | crypto_unregister_alg(&cbc_des3_alg); |
| 419 | crypto_unregister_alg(&ecb_des3_alg); |
| 420 | crypto_unregister_alg(&des3_alg); |
Herbert Xu | a9e62fa | 2006-08-21 21:39:24 +1000 | [diff] [blame] | 421 | crypto_unregister_alg(&cbc_des_alg); |
| 422 | crypto_unregister_alg(&ecb_des_alg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | crypto_unregister_alg(&des_alg); |
| 424 | } |
| 425 | |
Heiko Carstens | 9f7819c | 2008-04-17 07:46:17 +0200 | [diff] [blame] | 426 | module_init(des_s390_init); |
Jan Glauber | 1efbd15 | 2010-05-21 22:04:46 +1000 | [diff] [blame] | 427 | module_exit(des_s390_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
| 429 | MODULE_ALIAS("des"); |
| 430 | MODULE_ALIAS("des3_ede"); |
| 431 | |
| 432 | MODULE_LICENSE("GPL"); |
| 433 | MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms"); |