diff options
author | Jan Glauber <jang@linux.vnet.ibm.com> | 2011-04-19 19:29:15 (GMT) |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2011-05-04 05:05:52 (GMT) |
commit | 98971f8439b1bb9a61682fe24a865ddd25167a6b (patch) | |
tree | 0ac9fa1de6e0750c05e7917529f3a6e4e76a3686 /arch/s390/crypto/des_s390.c | |
parent | 1822bc9093e05059e4144d6041b0f5450ad275e1 (diff) | |
download | linux-98971f8439b1bb9a61682fe24a865ddd25167a6b.tar.xz |
crypto: s390 - cleanup DES code
Remove a stale file left over from 1efbd15c3bc2b79d33e033e898211109c32159fa
and and cleanup the DES code a bit to make it easier to add new code.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/s390/crypto/des_s390.c')
-rw-r--r-- | arch/s390/crypto/des_s390.c | 199 |
1 files changed, 96 insertions, 103 deletions
diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c index 1121e73..c36a01d 100644 --- a/arch/s390/crypto/des_s390.c +++ b/arch/s390/crypto/des_s390.c @@ -22,22 +22,17 @@ #include "crypt_s390.h" -#define DES3_192_KEY_SIZE (3 * DES_KEY_SIZE) +#define DES3_KEY_SIZE (3 * DES_KEY_SIZE) -struct crypt_s390_des_ctx { +struct s390_des_ctx { u8 iv[DES_BLOCK_SIZE]; - u8 key[DES_KEY_SIZE]; -}; - -struct crypt_s390_des3_192_ctx { - u8 iv[DES_BLOCK_SIZE]; - u8 key[DES3_192_KEY_SIZE]; + u8 key[DES3_KEY_SIZE]; }; static int des_setkey(struct crypto_tfm *tfm, const u8 *key, - unsigned int keylen) + unsigned int key_len) { - struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm); + struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); u32 *flags = &tfm->crt_flags; u32 tmp[DES_EXPKEY_WORDS]; @@ -47,22 +42,22 @@ static int des_setkey(struct crypto_tfm *tfm, const u8 *key, return -EINVAL; } - memcpy(dctx->key, key, keylen); + memcpy(ctx->key, key, key_len); return 0; } static void des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) { - struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm); + struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); - crypt_s390_km(KM_DEA_ENCRYPT, dctx->key, out, in, DES_BLOCK_SIZE); + crypt_s390_km(KM_DEA_ENCRYPT, ctx->key, out, in, DES_BLOCK_SIZE); } static void des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) { - struct crypt_s390_des_ctx *dctx = crypto_tfm_ctx(tfm); + struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); - crypt_s390_km(KM_DEA_DECRYPT, dctx->key, out, in, DES_BLOCK_SIZE); + crypt_s390_km(KM_DEA_DECRYPT, ctx->key, out, in, DES_BLOCK_SIZE); } static struct crypto_alg des_alg = { @@ -71,7 +66,7 @@ static struct crypto_alg des_alg = { .cra_priority = CRYPT_S390_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_CIPHER, .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_s390_des_ctx), + .cra_ctxsize = sizeof(struct s390_des_ctx), .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT(des_alg.cra_list), .cra_u = { @@ -86,7 +81,7 @@ static struct crypto_alg des_alg = { }; static int ecb_desall_crypt(struct blkcipher_desc *desc, long func, - void *param, struct blkcipher_walk *walk) + u8 *key, struct blkcipher_walk *walk) { int ret = blkcipher_walk_virt(desc, walk); unsigned int nbytes; @@ -97,7 +92,7 @@ static int ecb_desall_crypt(struct blkcipher_desc *desc, long func, u8 *out = walk->dst.virt.addr; u8 *in = walk->src.virt.addr; - ret = crypt_s390_km(func, param, out, in, n); + ret = crypt_s390_km(func, key, out, in, n); BUG_ON((ret < 0) || (ret != n)); nbytes &= DES_BLOCK_SIZE - 1; @@ -108,7 +103,7 @@ static int ecb_desall_crypt(struct blkcipher_desc *desc, long func, } static int cbc_desall_crypt(struct blkcipher_desc *desc, long func, - void *param, struct blkcipher_walk *walk) + u8 *iv, struct blkcipher_walk *walk) { int ret = blkcipher_walk_virt(desc, walk); unsigned int nbytes = walk->nbytes; @@ -116,20 +111,20 @@ static int cbc_desall_crypt(struct blkcipher_desc *desc, long func, if (!nbytes) goto out; - memcpy(param, walk->iv, DES_BLOCK_SIZE); + memcpy(iv, walk->iv, DES_BLOCK_SIZE); do { /* only use complete blocks */ unsigned int n = nbytes & ~(DES_BLOCK_SIZE - 1); u8 *out = walk->dst.virt.addr; u8 *in = walk->src.virt.addr; - ret = crypt_s390_kmc(func, param, out, in, n); + ret = crypt_s390_kmc(func, iv, out, in, n); BUG_ON((ret < 0) || (ret != n)); nbytes &= DES_BLOCK_SIZE - 1; ret = blkcipher_walk_done(desc, walk, nbytes); } while ((nbytes = walk->nbytes)); - memcpy(walk->iv, param, DES_BLOCK_SIZE); + memcpy(walk->iv, iv, DES_BLOCK_SIZE); out: return ret; @@ -139,22 +134,22 @@ static int ecb_des_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { - struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, sctx->key, &walk); + return ecb_desall_crypt(desc, KM_DEA_ENCRYPT, ctx->key, &walk); } static int ecb_des_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { - struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return ecb_desall_crypt(desc, KM_DEA_DECRYPT, sctx->key, &walk); + return ecb_desall_crypt(desc, KM_DEA_DECRYPT, ctx->key, &walk); } static struct crypto_alg ecb_des_alg = { @@ -163,7 +158,7 @@ static struct crypto_alg ecb_des_alg = { .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_s390_des_ctx), + .cra_ctxsize = sizeof(struct s390_des_ctx), .cra_type = &crypto_blkcipher_type, .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT(ecb_des_alg.cra_list), @@ -182,22 +177,22 @@ static int cbc_des_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { - struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, sctx->iv, &walk); + return cbc_desall_crypt(desc, KMC_DEA_ENCRYPT, ctx->iv, &walk); } static int cbc_des_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { - struct crypt_s390_des_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, sctx->iv, &walk); + return cbc_desall_crypt(desc, KMC_DEA_DECRYPT, ctx->iv, &walk); } static struct crypto_alg cbc_des_alg = { @@ -206,7 +201,7 @@ static struct crypto_alg cbc_des_alg = { .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_s390_des_ctx), + .cra_ctxsize = sizeof(struct s390_des_ctx), .cra_type = &crypto_blkcipher_type, .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT(cbc_des_alg.cra_list), @@ -235,10 +230,10 @@ static struct crypto_alg cbc_des_alg = { * property. * */ -static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key, - unsigned int keylen) +static int des3_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int key_len) { - struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm); + struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); u32 *flags = &tfm->crt_flags; if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) && @@ -248,136 +243,134 @@ static int des3_192_setkey(struct crypto_tfm *tfm, const u8 *key, *flags |= CRYPTO_TFM_RES_WEAK_KEY; return -EINVAL; } - memcpy(dctx->key, key, keylen); + memcpy(ctx->key, key, key_len); return 0; } -static void des3_192_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +static void des3_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) { - struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm); + struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); - crypt_s390_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src, - DES_BLOCK_SIZE); + crypt_s390_km(KM_TDEA_192_ENCRYPT, ctx->key, dst, src, DES_BLOCK_SIZE); } -static void des3_192_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +static void des3_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) { - struct crypt_s390_des3_192_ctx *dctx = crypto_tfm_ctx(tfm); + struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm); - crypt_s390_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src, - DES_BLOCK_SIZE); + crypt_s390_km(KM_TDEA_192_DECRYPT, ctx->key, dst, src, DES_BLOCK_SIZE); } -static struct crypto_alg des3_192_alg = { +static struct crypto_alg des3_alg = { .cra_name = "des3_ede", .cra_driver_name = "des3_ede-s390", .cra_priority = CRYPT_S390_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_CIPHER, .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx), + .cra_ctxsize = sizeof(struct s390_des_ctx), .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(des3_192_alg.cra_list), + .cra_list = LIST_HEAD_INIT(des3_alg.cra_list), .cra_u = { .cipher = { - .cia_min_keysize = DES3_192_KEY_SIZE, - .cia_max_keysize = DES3_192_KEY_SIZE, - .cia_setkey = des3_192_setkey, - .cia_encrypt = des3_192_encrypt, - .cia_decrypt = des3_192_decrypt, + .cia_min_keysize = DES3_KEY_SIZE, + .cia_max_keysize = DES3_KEY_SIZE, + .cia_setkey = des3_setkey, + .cia_encrypt = des3_encrypt, + .cia_decrypt = des3_decrypt, } } }; -static int ecb_des3_192_encrypt(struct blkcipher_desc *desc, - struct scatterlist *dst, - struct scatterlist *src, unsigned int nbytes) +static int ecb_des3_encrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) { - struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, sctx->key, &walk); + return ecb_desall_crypt(desc, KM_TDEA_192_ENCRYPT, ctx->key, &walk); } -static int ecb_des3_192_decrypt(struct blkcipher_desc *desc, - struct scatterlist *dst, - struct scatterlist *src, unsigned int nbytes) +static int ecb_des3_decrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) { - struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, sctx->key, &walk); + return ecb_desall_crypt(desc, KM_TDEA_192_DECRYPT, ctx->key, &walk); } -static struct crypto_alg ecb_des3_192_alg = { +static struct crypto_alg ecb_des3_alg = { .cra_name = "ecb(des3_ede)", .cra_driver_name = "ecb-des3_ede-s390", .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx), + .cra_ctxsize = sizeof(struct s390_des_ctx), .cra_type = &crypto_blkcipher_type, .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT( - ecb_des3_192_alg.cra_list), + ecb_des3_alg.cra_list), .cra_u = { .blkcipher = { - .min_keysize = DES3_192_KEY_SIZE, - .max_keysize = DES3_192_KEY_SIZE, - .setkey = des3_192_setkey, - .encrypt = ecb_des3_192_encrypt, - .decrypt = ecb_des3_192_decrypt, + .min_keysize = DES3_KEY_SIZE, + .max_keysize = DES3_KEY_SIZE, + .setkey = des3_setkey, + .encrypt = ecb_des3_encrypt, + .decrypt = ecb_des3_decrypt, } } }; -static int cbc_des3_192_encrypt(struct blkcipher_desc *desc, - struct scatterlist *dst, - struct scatterlist *src, unsigned int nbytes) +static int cbc_des3_encrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) { - struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, sctx->iv, &walk); + return cbc_desall_crypt(desc, KMC_TDEA_192_ENCRYPT, ctx->iv, &walk); } -static int cbc_des3_192_decrypt(struct blkcipher_desc *desc, - struct scatterlist *dst, - struct scatterlist *src, unsigned int nbytes) +static int cbc_des3_decrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) { - struct crypt_s390_des3_192_ctx *sctx = crypto_blkcipher_ctx(desc->tfm); + struct s390_des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); struct blkcipher_walk walk; blkcipher_walk_init(&walk, dst, src, nbytes); - return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, sctx->iv, &walk); + return cbc_desall_crypt(desc, KMC_TDEA_192_DECRYPT, ctx->iv, &walk); } -static struct crypto_alg cbc_des3_192_alg = { +static struct crypto_alg cbc_des3_alg = { .cra_name = "cbc(des3_ede)", .cra_driver_name = "cbc-des3_ede-s390", .cra_priority = CRYPT_S390_COMPOSITE_PRIORITY, .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx), + .cra_ctxsize = sizeof(struct s390_des_ctx), .cra_type = &crypto_blkcipher_type, .cra_module = THIS_MODULE, .cra_list = LIST_HEAD_INIT( - cbc_des3_192_alg.cra_list), + cbc_des3_alg.cra_list), .cra_u = { .blkcipher = { - .min_keysize = DES3_192_KEY_SIZE, - .max_keysize = DES3_192_KEY_SIZE, + .min_keysize = DES3_KEY_SIZE, + .max_keysize = DES3_KEY_SIZE, .ivsize = DES_BLOCK_SIZE, - .setkey = des3_192_setkey, - .encrypt = cbc_des3_192_encrypt, - .decrypt = cbc_des3_192_decrypt, + .setkey = des3_setkey, + .encrypt = cbc_des3_encrypt, + .decrypt = cbc_des3_decrypt, } } }; -static int des_s390_init(void) +static int __init des_s390_init(void) { int ret; @@ -394,23 +387,23 @@ static int des_s390_init(void) ret = crypto_register_alg(&cbc_des_alg); if (ret) goto cbc_des_err; - ret = crypto_register_alg(&des3_192_alg); + ret = crypto_register_alg(&des3_alg); if (ret) - goto des3_192_err; - ret = crypto_register_alg(&ecb_des3_192_alg); + goto des3_err; + ret = crypto_register_alg(&ecb_des3_alg); if (ret) - goto ecb_des3_192_err; - ret = crypto_register_alg(&cbc_des3_192_alg); + goto ecb_des3_err; + ret = crypto_register_alg(&cbc_des3_alg); if (ret) - goto cbc_des3_192_err; + goto cbc_des3_err; out: return ret; -cbc_des3_192_err: - crypto_unregister_alg(&ecb_des3_192_alg); -ecb_des3_192_err: - crypto_unregister_alg(&des3_192_alg); -des3_192_err: +cbc_des3_err: + crypto_unregister_alg(&ecb_des3_alg); +ecb_des3_err: + crypto_unregister_alg(&des3_alg); +des3_err: crypto_unregister_alg(&cbc_des_alg); cbc_des_err: crypto_unregister_alg(&ecb_des_alg); @@ -422,9 +415,9 @@ des_err: static void __exit des_s390_exit(void) { - crypto_unregister_alg(&cbc_des3_192_alg); - crypto_unregister_alg(&ecb_des3_192_alg); - crypto_unregister_alg(&des3_192_alg); + crypto_unregister_alg(&cbc_des3_alg); + crypto_unregister_alg(&ecb_des3_alg); + crypto_unregister_alg(&des3_alg); crypto_unregister_alg(&cbc_des_alg); crypto_unregister_alg(&ecb_des_alg); crypto_unregister_alg(&des_alg); |