1c1e26e1eSJan Glauber /* 2c1e26e1eSJan Glauber * Cryptographic API. 3c1e26e1eSJan Glauber * 4c1e26e1eSJan Glauber * s390 implementation of the DES Cipher Algorithm. 5c1e26e1eSJan Glauber * 686aa9fc2SJan Glauber * Copyright IBM Corp. 2003,2007 786aa9fc2SJan Glauber * Author(s): Thomas Spatzier 886aa9fc2SJan Glauber * Jan Glauber (jan.glauber@de.ibm.com) 9c1e26e1eSJan Glauber * 10c1e26e1eSJan Glauber * This program is free software; you can redistribute it and/or modify 11c1e26e1eSJan Glauber * it under the terms of the GNU General Public License as published by 12c1e26e1eSJan Glauber * the Free Software Foundation; either version 2 of the License, or 13c1e26e1eSJan Glauber * (at your option) any later version. 14c1e26e1eSJan Glauber * 15c1e26e1eSJan Glauber */ 16a9e62fadSHerbert Xu 17c1e26e1eSJan Glauber #include <linux/init.h> 18c1e26e1eSJan Glauber #include <linux/module.h> 191efbd15cSJan Glauber #include <linux/crypto.h> 201efbd15cSJan Glauber #include <crypto/algapi.h> 211efbd15cSJan Glauber #include <crypto/des.h> 22c1357833SJan Glauber 23c1e26e1eSJan Glauber #include "crypt_s390.h" 24c1e26e1eSJan Glauber 25c1e26e1eSJan Glauber #define DES3_192_KEY_SIZE (3 * DES_KEY_SIZE) 26c1e26e1eSJan Glauber 27c1e26e1eSJan Glauber struct crypt_s390_des_ctx { 28c1e26e1eSJan Glauber u8 iv[DES_BLOCK_SIZE]; 29c1e26e1eSJan Glauber u8 key[DES_KEY_SIZE]; 30c1e26e1eSJan Glauber }; 31c1e26e1eSJan Glauber 32c1e26e1eSJan Glauber struct crypt_s390_des3_192_ctx { 33c1e26e1eSJan Glauber u8 iv[DES_BLOCK_SIZE]; 34c1e26e1eSJan Glauber u8 key[DES3_192_KEY_SIZE]; 35c1e26e1eSJan Glauber }; 36c1e26e1eSJan Glauber 376c2bb98bSHerbert Xu static int des_setkey(struct crypto_tfm *tfm, const u8 *key, 38560c06aeSHerbert Xu unsigned int keylen) 39c1e26e1eSJan Glauber { 406c2bb98bSHerbert Xu struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm); 41560c06aeSHerbert Xu u32 *flags = &tfm->crt_flags; 421efbd15cSJan Glauber u32 tmp[DES_EXPKEY_WORDS]; 43c1e26e1eSJan Glauber 441efbd15cSJan Glauber /* check for weak keys */ 451efbd15cSJan Glauber if (!des_ekey(tmp, key) && (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { 461efbd15cSJan Glauber *flags |= CRYPTO_TFM_RES_WEAK_KEY; 471efbd15cSJan Glauber return -EINVAL; 481efbd15cSJan Glauber } 491efbd15cSJan Glauber 50c1e26e1eSJan Glauber memcpy(dctx->key, key, keylen); 511efbd15cSJan Glauber return 0; 52c1e26e1eSJan Glauber } 53c1e26e1eSJan Glauber 546c2bb98bSHerbert Xu static void des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) 55c1e26e1eSJan Glauber { 566c2bb98bSHerbert Xu struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm); 57c1e26e1eSJan Glauber 58b8dc6038SJan Glauber crypt_s390_km(KM_DEA_ENCRYPT, dctx->key, out, in, DES_BLOCK_SIZE); 59c1e26e1eSJan Glauber } 60c1e26e1eSJan Glauber 616c2bb98bSHerbert Xu static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) 62c1e26e1eSJan Glauber { 636c2bb98bSHerbert Xu struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm); 64c1e26e1eSJan Glauber 65b8dc6038SJan Glauber crypt_s390_km(KM_DEA_DECRYPT, dctx->key, out, in, DES_BLOCK_SIZE); 66b8dc6038SJan Glauber } 67b8dc6038SJan Glauber 68c1e26e1eSJan Glauber static struct crypto_alg des_alg = { 69c1e26e1eSJan Glauber .cra_name = "des", 7065b75c36SHerbert Xu .cra_driver_name = "des-s390", 7165b75c36SHerbert Xu .cra_priority = CRYPT_S390_PRIORITY, 72c1e26e1eSJan Glauber .cra_flags = CRYPTO_ALG_TYPE_CIPHER, 73c1e26e1eSJan Glauber .cra_blocksize = DES_BLOCK_SIZE, 74c1e26e1eSJan Glauber .cra_ctxsize = sizeof(struct crypt_s390_des_ctx), 75c1e26e1eSJan Glauber .cra_module = THIS_MODULE, 76c1e26e1eSJan Glauber .cra_list = LIST_HEAD_INIT(des_alg.cra_list), 77c1357833SJan Glauber .cra_u = { 78c1357833SJan Glauber .cipher = { 79c1e26e1eSJan Glauber .cia_min_keysize = DES_KEY_SIZE, 80c1e26e1eSJan Glauber .cia_max_keysize = DES_KEY_SIZE, 81c1e26e1eSJan Glauber .cia_setkey = des_setkey, 82c1e26e1eSJan Glauber .cia_encrypt = des_encrypt, 83b8dc6038SJan Glauber .cia_decrypt = des_decrypt, 84c1357833SJan Glauber } 85c1357833SJan Glauber } 86c1e26e1eSJan Glauber }; 87c1e26e1eSJan Glauber 88a9e62fadSHerbert Xu static int ecb_desall_crypt(struct blkcipher_desc *desc, long func, 89a9e62fadSHerbert Xu void *param, struct blkcipher_walk *walk) 90a9e62fadSHerbert Xu { 91a9e62fadSHerbert Xu int ret = blkcipher_walk_virt(desc, walk); 92a9e62fadSHerbert Xu unsigned int nbytes; 93a9e62fadSHerbert Xu 94a9e62fadSHerbert Xu while ((nbytes = walk->nbytes)) { 95a9e62fadSHerbert Xu /* only use complete blocks */ 96a9e62fadSHerbert Xu unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1); 97a9e62fadSHerbert Xu u8 *out = walk->dst.virt.addr; 98a9e62fadSHerbert Xu u8 *in = walk->src.virt.addr; 99a9e62fadSHerbert Xu 100a9e62fadSHerbert Xu ret = crypt_s390_km(func, param, out, in, n); 101a9e62fadSHerbert Xu BUG_ON((ret < 0) || (ret != n)); 102a9e62fadSHerbert Xu 103a9e62fadSHerbert Xu nbytes &= DES_BLOCK_SIZE - 1; 104a9e62fadSHerbert Xu ret = blkcipher_walk_done(desc, walk, nbytes); 105a9e62fadSHerbert Xu } 106a9e62fadSHerbert Xu 107a9e62fadSHerbert Xu return ret; 108a9e62fadSHerbert Xu } 109a9e62fadSHerbert Xu 110a9e62fadSHerbert Xu static int cbc_desall_crypt(struct blkcipher_desc *desc, long func, 111a9e62fadSHerbert Xu void *param, struct blkcipher_walk *walk) 112a9e62fadSHerbert Xu { 113a9e62fadSHerbert Xu int ret = blkcipher_walk_virt(desc, walk); 114a9e62fadSHerbert Xu unsigned int nbytes = walk->nbytes; 115a9e62fadSHerbert Xu 116a9e62fadSHerbert Xu if (!nbytes) 117a9e62fadSHerbert Xu goto out; 118a9e62fadSHerbert Xu 119a9e62fadSHerbert Xu memcpy(param, walk->iv, DES_BLOCK_SIZE); 120a9e62fadSHerbert Xu do { 121a9e62fadSHerbert Xu /* only use complete blocks */ 122a9e62fadSHerbert Xu unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1); 123a9e62fadSHerbert Xu u8 *out = walk->dst.virt.addr; 124a9e62fadSHerbert Xu u8 *in = walk->src.virt.addr; 125a9e62fadSHerbert Xu 126a9e62fadSHerbert Xu ret = crypt_s390_kmc(func, param, out, in, n); 127a9e62fadSHerbert Xu BUG_ON((ret < 0) || (ret != n)); 128a9e62fadSHerbert Xu 129a9e62fadSHerbert Xu nbytes &= DES_BLOCK_SIZE - 1; 130a9e62fadSHerbert Xu ret = blkcipher_walk_done(desc, walk, nbytes); 131a9e62fadSHerbert Xu } while ((nbytes = walk->nbytes)); 132a9e62fadSHerbert Xu memcpy(walk->iv, param, DES_BLOCK_SIZE); 133a9e62fadSHerbert Xu 134a9e62fadSHerbert Xu out: 135a9e62fadSHerbert Xu return ret; 136a9e62fadSHerbert Xu } 137a9e62fadSHerbert Xu 138a9e62fadSHerbert Xu static int ecb_des_encrypt(struct blkcipher_desc *desc, 139a9e62fadSHerbert Xu struct scatterlist *dst, struct scatterlist *src, 140a9e62fadSHerbert Xu unsigned int nbytes) 141a9e62fadSHerbert Xu { 142a9e62fadSHerbert Xu struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 143a9e62fadSHerbert Xu struct blkcipher_walk walk; 144a9e62fadSHerbert Xu 145a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 146a9e62fadSHerbert Xu return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, sctx->key, &walk); 147a9e62fadSHerbert Xu } 148a9e62fadSHerbert Xu 149a9e62fadSHerbert Xu static int ecb_des_decrypt(struct blkcipher_desc *desc, 150a9e62fadSHerbert Xu struct scatterlist *dst, struct scatterlist *src, 151a9e62fadSHerbert Xu unsigned int nbytes) 152a9e62fadSHerbert Xu { 153a9e62fadSHerbert Xu struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 154a9e62fadSHerbert Xu struct blkcipher_walk walk; 155a9e62fadSHerbert Xu 156a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 157a9e62fadSHerbert Xu return ecb_desall_crypt(desc, KM_DEA_DECRYPT, sctx->key, &walk); 158a9e62fadSHerbert Xu } 159a9e62fadSHerbert Xu 160a9e62fadSHerbert Xu static struct crypto_alg ecb_des_alg = { 161a9e62fadSHerbert Xu .cra_name = "ecb(des)", 162a9e62fadSHerbert Xu .cra_driver_name = "ecb-des-s390", 163a9e62fadSHerbert Xu .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, 164a9e62fadSHerbert Xu .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, 165a9e62fadSHerbert Xu .cra_blocksize = DES_BLOCK_SIZE, 166a9e62fadSHerbert Xu .cra_ctxsize = sizeof(struct crypt_s390_des_ctx), 167a9e62fadSHerbert Xu .cra_type = &crypto_blkcipher_type, 168a9e62fadSHerbert Xu .cra_module = THIS_MODULE, 169a9e62fadSHerbert Xu .cra_list = LIST_HEAD_INIT(ecb_des_alg.cra_list), 170a9e62fadSHerbert Xu .cra_u = { 171a9e62fadSHerbert Xu .blkcipher = { 172a9e62fadSHerbert Xu .min_keysize = DES_KEY_SIZE, 173a9e62fadSHerbert Xu .max_keysize = DES_KEY_SIZE, 174a9e62fadSHerbert Xu .setkey = des_setkey, 175a9e62fadSHerbert Xu .encrypt = ecb_des_encrypt, 176a9e62fadSHerbert Xu .decrypt = ecb_des_decrypt, 177a9e62fadSHerbert Xu } 178a9e62fadSHerbert Xu } 179a9e62fadSHerbert Xu }; 180a9e62fadSHerbert Xu 181a9e62fadSHerbert Xu static int cbc_des_encrypt(struct blkcipher_desc *desc, 182a9e62fadSHerbert Xu struct scatterlist *dst, struct scatterlist *src, 183a9e62fadSHerbert Xu unsigned int nbytes) 184a9e62fadSHerbert Xu { 185a9e62fadSHerbert Xu struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 186a9e62fadSHerbert Xu struct blkcipher_walk walk; 187a9e62fadSHerbert Xu 188a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 189a9e62fadSHerbert Xu return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, sctx->iv, &walk); 190a9e62fadSHerbert Xu } 191a9e62fadSHerbert Xu 192a9e62fadSHerbert Xu static int cbc_des_decrypt(struct blkcipher_desc *desc, 193a9e62fadSHerbert Xu struct scatterlist *dst, struct scatterlist *src, 194a9e62fadSHerbert Xu unsigned int nbytes) 195a9e62fadSHerbert Xu { 196a9e62fadSHerbert Xu struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 197a9e62fadSHerbert Xu struct blkcipher_walk walk; 198a9e62fadSHerbert Xu 199a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 200a9e62fadSHerbert Xu return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, sctx->iv, &walk); 201a9e62fadSHerbert Xu } 202a9e62fadSHerbert Xu 203a9e62fadSHerbert Xu static struct crypto_alg cbc_des_alg = { 204a9e62fadSHerbert Xu .cra_name = "cbc(des)", 205a9e62fadSHerbert Xu .cra_driver_name = "cbc-des-s390", 206a9e62fadSHerbert Xu .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, 207a9e62fadSHerbert Xu .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, 208a9e62fadSHerbert Xu .cra_blocksize = DES_BLOCK_SIZE, 209a9e62fadSHerbert Xu .cra_ctxsize = sizeof(struct crypt_s390_des_ctx), 210a9e62fadSHerbert Xu .cra_type = &crypto_blkcipher_type, 211a9e62fadSHerbert Xu .cra_module = THIS_MODULE, 212a9e62fadSHerbert Xu .cra_list = LIST_HEAD_INIT(cbc_des_alg.cra_list), 213a9e62fadSHerbert Xu .cra_u = { 214a9e62fadSHerbert Xu .blkcipher = { 215a9e62fadSHerbert Xu .min_keysize = DES_KEY_SIZE, 216a9e62fadSHerbert Xu .max_keysize = DES_KEY_SIZE, 217a9e62fadSHerbert Xu .ivsize = DES_BLOCK_SIZE, 218a9e62fadSHerbert Xu .setkey = des_setkey, 219a9e62fadSHerbert Xu .encrypt = cbc_des_encrypt, 220a9e62fadSHerbert Xu .decrypt = cbc_des_decrypt, 221a9e62fadSHerbert Xu } 222a9e62fadSHerbert Xu } 223a9e62fadSHerbert Xu }; 224a9e62fadSHerbert Xu 225c1e26e1eSJan Glauber /* 226c1e26e1eSJan Glauber * RFC2451: 227c1e26e1eSJan Glauber * 228c1e26e1eSJan Glauber * For DES-EDE3, there is no known need to reject weak or 229c1e26e1eSJan Glauber * complementation keys. Any weakness is obviated by the use of 230c1e26e1eSJan Glauber * multiple keys. 231c1e26e1eSJan Glauber * 232c1e26e1eSJan Glauber * However, if the first two or last two independent 64-bit keys are 233c1e26e1eSJan Glauber * equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the 234c1e26e1eSJan Glauber * same as DES. Implementers MUST reject keys that exhibit this 235c1e26e1eSJan Glauber * property. 236c1e26e1eSJan Glauber * 237c1e26e1eSJan Glauber */ 2386c2bb98bSHerbert Xu static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key, 239560c06aeSHerbert Xu unsigned int keylen) 240c1e26e1eSJan Glauber { 2416c2bb98bSHerbert Xu struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm); 242560c06aeSHerbert Xu u32 *flags = &tfm->crt_flags; 243c1e26e1eSJan Glauber 244c1e26e1eSJan Glauber if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) && 245c1e26e1eSJan Glauber memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2], 24603b56ce5SJarod Wilson DES_KEY_SIZE)) && 24703b56ce5SJarod Wilson (*flags & CRYPTO_TFM_REQ_WEAK_KEY)) { 24803b56ce5SJarod Wilson *flags |= CRYPTO_TFM_RES_WEAK_KEY; 249c1e26e1eSJan Glauber return -EINVAL; 250c1e26e1eSJan Glauber } 251c1e26e1eSJan Glauber memcpy(dctx->key, key, keylen); 252c1e26e1eSJan Glauber return 0; 253c1e26e1eSJan Glauber } 254c1e26e1eSJan Glauber 2556c2bb98bSHerbert Xu static void des3_192_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) 256c1e26e1eSJan Glauber { 2576c2bb98bSHerbert Xu struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm); 258c1e26e1eSJan Glauber 259c1e26e1eSJan Glauber crypt_s390_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src, 2601efbd15cSJan Glauber DES_BLOCK_SIZE); 261c1e26e1eSJan Glauber } 262c1e26e1eSJan Glauber 2636c2bb98bSHerbert Xu static void des3_192_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) 264c1e26e1eSJan Glauber { 2656c2bb98bSHerbert Xu struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm); 266c1e26e1eSJan Glauber 267c1e26e1eSJan Glauber crypt_s390_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src, 2681efbd15cSJan Glauber DES_BLOCK_SIZE); 269c1e26e1eSJan Glauber } 270c1e26e1eSJan Glauber 271c1e26e1eSJan Glauber static struct crypto_alg des3_192_alg = { 272c1e26e1eSJan Glauber .cra_name = "des3_ede", 27365b75c36SHerbert Xu .cra_driver_name = "des3_ede-s390", 27465b75c36SHerbert Xu .cra_priority = CRYPT_S390_PRIORITY, 275c1e26e1eSJan Glauber .cra_flags = CRYPTO_ALG_TYPE_CIPHER, 2761efbd15cSJan Glauber .cra_blocksize = DES_BLOCK_SIZE, 277c1e26e1eSJan Glauber .cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx), 278c1e26e1eSJan Glauber .cra_module = THIS_MODULE, 279c1e26e1eSJan Glauber .cra_list = LIST_HEAD_INIT(des3_192_alg.cra_list), 280c1357833SJan Glauber .cra_u = { 281c1357833SJan Glauber .cipher = { 282c1e26e1eSJan Glauber .cia_min_keysize = DES3_192_KEY_SIZE, 283c1e26e1eSJan Glauber .cia_max_keysize = DES3_192_KEY_SIZE, 284c1e26e1eSJan Glauber .cia_setkey = des3_192_setkey, 285c1e26e1eSJan Glauber .cia_encrypt = des3_192_encrypt, 286b8dc6038SJan Glauber .cia_decrypt = des3_192_decrypt, 287c1357833SJan Glauber } 288c1357833SJan Glauber } 289c1e26e1eSJan Glauber }; 290c1e26e1eSJan Glauber 291a9e62fadSHerbert Xu static int ecb_des3_192_encrypt(struct blkcipher_desc *desc, 292a9e62fadSHerbert Xu struct scatterlist *dst, 293a9e62fadSHerbert Xu struct scatterlist *src, unsigned int nbytes) 294a9e62fadSHerbert Xu { 295a9e62fadSHerbert Xu struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 296a9e62fadSHerbert Xu struct blkcipher_walk walk; 297a9e62fadSHerbert Xu 298a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 299a9e62fadSHerbert Xu return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, sctx->key, &walk); 300a9e62fadSHerbert Xu } 301a9e62fadSHerbert Xu 302a9e62fadSHerbert Xu static int ecb_des3_192_decrypt(struct blkcipher_desc *desc, 303a9e62fadSHerbert Xu struct scatterlist *dst, 304a9e62fadSHerbert Xu struct scatterlist *src, unsigned int nbytes) 305a9e62fadSHerbert Xu { 306a9e62fadSHerbert Xu struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 307a9e62fadSHerbert Xu struct blkcipher_walk walk; 308a9e62fadSHerbert Xu 309a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 310a9e62fadSHerbert Xu return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, sctx->key, &walk); 311a9e62fadSHerbert Xu } 312a9e62fadSHerbert Xu 313a9e62fadSHerbert Xu static struct crypto_alg ecb_des3_192_alg = { 314a9e62fadSHerbert Xu .cra_name = "ecb(des3_ede)", 315a9e62fadSHerbert Xu .cra_driver_name = "ecb-des3_ede-s390", 316a9e62fadSHerbert Xu .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, 317a9e62fadSHerbert Xu .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, 3181efbd15cSJan Glauber .cra_blocksize = DES_BLOCK_SIZE, 319a9e62fadSHerbert Xu .cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx), 320a9e62fadSHerbert Xu .cra_type = &crypto_blkcipher_type, 321a9e62fadSHerbert Xu .cra_module = THIS_MODULE, 322a9e62fadSHerbert Xu .cra_list = LIST_HEAD_INIT( 323a9e62fadSHerbert Xu ecb_des3_192_alg.cra_list), 324a9e62fadSHerbert Xu .cra_u = { 325a9e62fadSHerbert Xu .blkcipher = { 326a9e62fadSHerbert Xu .min_keysize = DES3_192_KEY_SIZE, 327a9e62fadSHerbert Xu .max_keysize = DES3_192_KEY_SIZE, 328a9e62fadSHerbert Xu .setkey = des3_192_setkey, 329a9e62fadSHerbert Xu .encrypt = ecb_des3_192_encrypt, 330a9e62fadSHerbert Xu .decrypt = ecb_des3_192_decrypt, 331a9e62fadSHerbert Xu } 332a9e62fadSHerbert Xu } 333a9e62fadSHerbert Xu }; 334a9e62fadSHerbert Xu 335a9e62fadSHerbert Xu static int cbc_des3_192_encrypt(struct blkcipher_desc *desc, 336a9e62fadSHerbert Xu struct scatterlist *dst, 337a9e62fadSHerbert Xu struct scatterlist *src, unsigned int nbytes) 338a9e62fadSHerbert Xu { 339a9e62fadSHerbert Xu struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 340a9e62fadSHerbert Xu struct blkcipher_walk walk; 341a9e62fadSHerbert Xu 342a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 343a9e62fadSHerbert Xu return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, sctx->iv, &walk); 344a9e62fadSHerbert Xu } 345a9e62fadSHerbert Xu 346a9e62fadSHerbert Xu static int cbc_des3_192_decrypt(struct blkcipher_desc *desc, 347a9e62fadSHerbert Xu struct scatterlist *dst, 348a9e62fadSHerbert Xu struct scatterlist *src, unsigned int nbytes) 349a9e62fadSHerbert Xu { 350a9e62fadSHerbert Xu struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); 351a9e62fadSHerbert Xu struct blkcipher_walk walk; 352a9e62fadSHerbert Xu 353a9e62fadSHerbert Xu blkcipher_walk_init(&walk, dst, src, nbytes); 354a9e62fadSHerbert Xu return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, sctx->iv, &walk); 355a9e62fadSHerbert Xu } 356a9e62fadSHerbert Xu 357a9e62fadSHerbert Xu static struct crypto_alg cbc_des3_192_alg = { 358a9e62fadSHerbert Xu .cra_name = "cbc(des3_ede)", 359a9e62fadSHerbert Xu .cra_driver_name = "cbc-des3_ede-s390", 360a9e62fadSHerbert Xu .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, 361a9e62fadSHerbert Xu .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, 3621efbd15cSJan Glauber .cra_blocksize = DES_BLOCK_SIZE, 363a9e62fadSHerbert Xu .cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx), 364a9e62fadSHerbert Xu .cra_type = &crypto_blkcipher_type, 365a9e62fadSHerbert Xu .cra_module = THIS_MODULE, 366a9e62fadSHerbert Xu .cra_list = LIST_HEAD_INIT( 367a9e62fadSHerbert Xu cbc_des3_192_alg.cra_list), 368a9e62fadSHerbert Xu .cra_u = { 369a9e62fadSHerbert Xu .blkcipher = { 370a9e62fadSHerbert Xu .min_keysize = DES3_192_KEY_SIZE, 371a9e62fadSHerbert Xu .max_keysize = DES3_192_KEY_SIZE, 3721efbd15cSJan Glauber .ivsize = DES_BLOCK_SIZE, 373a9e62fadSHerbert Xu .setkey = des3_192_setkey, 374a9e62fadSHerbert Xu .encrypt = cbc_des3_192_encrypt, 375a9e62fadSHerbert Xu .decrypt = cbc_des3_192_decrypt, 376a9e62fadSHerbert Xu } 377a9e62fadSHerbert Xu } 378a9e62fadSHerbert Xu }; 379a9e62fadSHerbert Xu 3809f7819c1SHeiko Carstens static int des_s390_init(void) 381c1e26e1eSJan Glauber { 38280d663a4SJan Glauber int ret; 383c1e26e1eSJan Glauber 3841822bc90SJan Glauber if (!crypt_s390_func_available(KM_DEA_ENCRYPT, CRYPT_S390_MSA) || 3851822bc90SJan Glauber !crypt_s390_func_available(KM_TDEA_192_ENCRYPT, CRYPT_S390_MSA)) 38686aa9fc2SJan Glauber return -EOPNOTSUPP; 387c1e26e1eSJan Glauber 388a9e62fadSHerbert Xu ret = crypto_register_alg(&des_alg); 389a9e62fadSHerbert Xu if (ret) 390a9e62fadSHerbert Xu goto des_err; 391a9e62fadSHerbert Xu ret = crypto_register_alg(&ecb_des_alg); 392a9e62fadSHerbert Xu if (ret) 393a9e62fadSHerbert Xu goto ecb_des_err; 394a9e62fadSHerbert Xu ret = crypto_register_alg(&cbc_des_alg); 395a9e62fadSHerbert Xu if (ret) 396a9e62fadSHerbert Xu goto cbc_des_err; 397a9e62fadSHerbert Xu ret = crypto_register_alg(&des3_192_alg); 398a9e62fadSHerbert Xu if (ret) 399a9e62fadSHerbert Xu goto des3_192_err; 400a9e62fadSHerbert Xu ret = crypto_register_alg(&ecb_des3_192_alg); 401a9e62fadSHerbert Xu if (ret) 402a9e62fadSHerbert Xu goto ecb_des3_192_err; 403a9e62fadSHerbert Xu ret = crypto_register_alg(&cbc_des3_192_alg); 404a9e62fadSHerbert Xu if (ret) 405a9e62fadSHerbert Xu goto cbc_des3_192_err; 406a9e62fadSHerbert Xu out: 407a9e62fadSHerbert Xu return ret; 408a9e62fadSHerbert Xu 409a9e62fadSHerbert Xu cbc_des3_192_err: 410a9e62fadSHerbert Xu crypto_unregister_alg(&ecb_des3_192_alg); 411a9e62fadSHerbert Xu ecb_des3_192_err: 412c1e26e1eSJan Glauber crypto_unregister_alg(&des3_192_alg); 413a9e62fadSHerbert Xu des3_192_err: 414a9e62fadSHerbert Xu crypto_unregister_alg(&cbc_des_alg); 415a9e62fadSHerbert Xu cbc_des_err: 416a9e62fadSHerbert Xu crypto_unregister_alg(&ecb_des_alg); 417a9e62fadSHerbert Xu ecb_des_err: 418c1e26e1eSJan Glauber crypto_unregister_alg(&des_alg); 419a9e62fadSHerbert Xu des_err: 420a9e62fadSHerbert Xu goto out; 421c1e26e1eSJan Glauber } 422c1e26e1eSJan Glauber 4231efbd15cSJan Glauber static void __exit des_s390_exit(void) 424c1e26e1eSJan Glauber { 425a9e62fadSHerbert Xu crypto_unregister_alg(&cbc_des3_192_alg); 426a9e62fadSHerbert Xu crypto_unregister_alg(&ecb_des3_192_alg); 427c1e26e1eSJan Glauber crypto_unregister_alg(&des3_192_alg); 428a9e62fadSHerbert Xu crypto_unregister_alg(&cbc_des_alg); 429a9e62fadSHerbert Xu crypto_unregister_alg(&ecb_des_alg); 430c1e26e1eSJan Glauber crypto_unregister_alg(&des_alg); 431c1e26e1eSJan Glauber } 432c1e26e1eSJan Glauber 4339f7819c1SHeiko Carstens module_init(des_s390_init); 4341efbd15cSJan Glauber module_exit(des_s390_exit); 435c1e26e1eSJan Glauber 436c1e26e1eSJan Glauber MODULE_ALIAS("des"); 437c1e26e1eSJan Glauber MODULE_ALIAS("des3_ede"); 438c1e26e1eSJan Glauber 439c1e26e1eSJan Glauber MODULE_LICENSE("GPL"); 440c1e26e1eSJan Glauber MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms"); 441