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-rw-r--r--arch/x86/crypto/serpent_sse2_glue.c519
1 files changed, 69 insertions, 450 deletions
diff --git a/arch/x86/crypto/serpent_sse2_glue.c b/arch/x86/crypto/serpent_sse2_glue.c
index ac0e831943f5..3dafe137596a 100644
--- a/arch/x86/crypto/serpent_sse2_glue.c
+++ b/arch/x86/crypto/serpent_sse2_glue.c
@@ -30,21 +30,22 @@
*/
#include <linux/module.h>
-#include <linux/hardirq.h>
#include <linux/types.h>
#include <linux/crypto.h>
#include <linux/err.h>
-#include <crypto/ablk_helper.h>
#include <crypto/algapi.h>
-#include <crypto/serpent.h>
-#include <crypto/cryptd.h>
#include <crypto/b128ops.h>
-#include <crypto/ctr.h>
-#include <crypto/lrw.h>
-#include <crypto/xts.h>
+#include <crypto/internal/simd.h>
+#include <crypto/serpent.h>
#include <asm/crypto/serpent-sse2.h>
#include <asm/crypto/glue_helper.h>
+static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen);
+}
+
static void serpent_decrypt_cbc_xway(void *ctx, u128 *dst, const u128 *src)
{
u128 ivs[SERPENT_PARALLEL_BLOCKS - 1];
@@ -139,464 +140,79 @@ static const struct common_glue_ctx serpent_dec_cbc = {
} }
};
-static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- return glue_ecb_crypt_128bit(&serpent_enc, desc, dst, src, nbytes);
-}
-
-static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- return glue_ecb_crypt_128bit(&serpent_dec, desc, dst, src, nbytes);
-}
-
-static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
+static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(__serpent_encrypt), desc,
- dst, src, nbytes);
+ return glue_ecb_req_128bit(&serpent_enc, req);
}
-static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
+static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_128bit(&serpent_dec_cbc, desc, dst, src,
- nbytes);
+ return glue_ecb_req_128bit(&serpent_dec, req);
}
-static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
+static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_ctr_crypt_128bit(&serpent_ctr, desc, dst, src, nbytes);
+ return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(__serpent_encrypt),
+ req);
}
-static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes)
+static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_fpu_begin(SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS,
- NULL, fpu_enabled, nbytes);
+ return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
}
-static inline void serpent_fpu_end(bool fpu_enabled)
+static int ctr_crypt(struct skcipher_request *req)
{
- glue_fpu_end(fpu_enabled);
+ return glue_ctr_req_128bit(&serpent_ctr, req);
}
-struct crypt_priv {
- struct serpent_ctx *ctx;
- bool fpu_enabled;
-};
-
-static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
-{
- const unsigned int bsize = SERPENT_BLOCK_SIZE;
- struct crypt_priv *ctx = priv;
- int i;
-
- ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes);
-
- if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) {
- serpent_enc_blk_xway(ctx->ctx, srcdst, srcdst);
- return;
- }
-
- for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
- __serpent_encrypt(ctx->ctx, srcdst, srcdst);
-}
-
-static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes)
-{
- const unsigned int bsize = SERPENT_BLOCK_SIZE;
- struct crypt_priv *ctx = priv;
- int i;
-
- ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes);
-
- if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) {
- serpent_dec_blk_xway(ctx->ctx, srcdst, srcdst);
- return;
- }
-
- for (i = 0; i < nbytes / bsize; i++, srcdst += bsize)
- __serpent_decrypt(ctx->ctx, srcdst, srcdst);
-}
-
-struct serpent_lrw_ctx {
- struct lrw_table_ctx lrw_table;
- struct serpent_ctx serpent_ctx;
-};
-
-static int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
- int err;
-
- err = __serpent_setkey(&ctx->serpent_ctx, key, keylen -
- SERPENT_BLOCK_SIZE);
- if (err)
- return err;
-
- return lrw_init_table(&ctx->lrw_table, key + keylen -
- SERPENT_BLOCK_SIZE);
-}
-
-static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- be128 buf[SERPENT_PARALLEL_BLOCKS];
- struct crypt_priv crypt_ctx = {
- .ctx = &ctx->serpent_ctx,
- .fpu_enabled = false,
- };
- struct lrw_crypt_req req = {
- .tbuf = buf,
- .tbuflen = sizeof(buf),
-
- .table_ctx = &ctx->lrw_table,
- .crypt_ctx = &crypt_ctx,
- .crypt_fn = encrypt_callback,
- };
- int ret;
-
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
- ret = lrw_crypt(desc, dst, src, nbytes, &req);
- serpent_fpu_end(crypt_ctx.fpu_enabled);
-
- return ret;
-}
-
-static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- be128 buf[SERPENT_PARALLEL_BLOCKS];
- struct crypt_priv crypt_ctx = {
- .ctx = &ctx->serpent_ctx,
- .fpu_enabled = false,
- };
- struct lrw_crypt_req req = {
- .tbuf = buf,
- .tbuflen = sizeof(buf),
-
- .table_ctx = &ctx->lrw_table,
- .crypt_ctx = &crypt_ctx,
- .crypt_fn = decrypt_callback,
- };
- int ret;
-
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
- ret = lrw_crypt(desc, dst, src, nbytes, &req);
- serpent_fpu_end(crypt_ctx.fpu_enabled);
-
- return ret;
-}
-
-static void lrw_exit_tfm(struct crypto_tfm *tfm)
-{
- struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm);
-
- lrw_free_table(&ctx->lrw_table);
-}
-
-struct serpent_xts_ctx {
- struct serpent_ctx tweak_ctx;
- struct serpent_ctx crypt_ctx;
+static struct skcipher_alg serpent_algs[] = {
+ {
+ .base.cra_name = "__ecb(serpent)",
+ .base.cra_driver_name = "__ecb-serpent-sse2",
+ .base.cra_priority = 400,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = SERPENT_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct serpent_ctx),
+ .base.cra_module = THIS_MODULE,
+ .min_keysize = SERPENT_MIN_KEY_SIZE,
+ .max_keysize = SERPENT_MAX_KEY_SIZE,
+ .setkey = serpent_setkey_skcipher,
+ .encrypt = ecb_encrypt,
+ .decrypt = ecb_decrypt,
+ }, {
+ .base.cra_name = "__cbc(serpent)",
+ .base.cra_driver_name = "__cbc-serpent-sse2",
+ .base.cra_priority = 400,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = SERPENT_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct serpent_ctx),
+ .base.cra_module = THIS_MODULE,
+ .min_keysize = SERPENT_MIN_KEY_SIZE,
+ .max_keysize = SERPENT_MAX_KEY_SIZE,
+ .ivsize = SERPENT_BLOCK_SIZE,
+ .setkey = serpent_setkey_skcipher,
+ .encrypt = cbc_encrypt,
+ .decrypt = cbc_decrypt,
+ }, {
+ .base.cra_name = "__ctr(serpent)",
+ .base.cra_driver_name = "__ctr-serpent-sse2",
+ .base.cra_priority = 400,
+ .base.cra_flags = CRYPTO_ALG_INTERNAL,
+ .base.cra_blocksize = 1,
+ .base.cra_ctxsize = sizeof(struct serpent_ctx),
+ .base.cra_module = THIS_MODULE,
+ .min_keysize = SERPENT_MIN_KEY_SIZE,
+ .max_keysize = SERPENT_MAX_KEY_SIZE,
+ .ivsize = SERPENT_BLOCK_SIZE,
+ .chunksize = SERPENT_BLOCK_SIZE,
+ .setkey = serpent_setkey_skcipher,
+ .encrypt = ctr_crypt,
+ .decrypt = ctr_crypt,
+ },
};
-static int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct serpent_xts_ctx *ctx = crypto_tfm_ctx(tfm);
- int err;
-
- err = xts_check_key(tfm, key, keylen);
- if (err)
- return err;
-
- /* first half of xts-key is for crypt */
- err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2);
- if (err)
- return err;
-
- /* second half of xts-key is for tweak */
- return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2);
-}
-
-static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- le128 buf[SERPENT_PARALLEL_BLOCKS];
- struct crypt_priv crypt_ctx = {
- .ctx = &ctx->crypt_ctx,
- .fpu_enabled = false,
- };
- struct xts_crypt_req req = {
- .tbuf = buf,
- .tbuflen = sizeof(buf),
-
- .tweak_ctx = &ctx->tweak_ctx,
- .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt),
- .crypt_ctx = &crypt_ctx,
- .crypt_fn = encrypt_callback,
- };
- int ret;
-
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
- ret = xts_crypt(desc, dst, src, nbytes, &req);
- serpent_fpu_end(crypt_ctx.fpu_enabled);
-
- return ret;
-}
-
-static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes)
-{
- struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- le128 buf[SERPENT_PARALLEL_BLOCKS];
- struct crypt_priv crypt_ctx = {
- .ctx = &ctx->crypt_ctx,
- .fpu_enabled = false,
- };
- struct xts_crypt_req req = {
- .tbuf = buf,
- .tbuflen = sizeof(buf),
-
- .tweak_ctx = &ctx->tweak_ctx,
- .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt),
- .crypt_ctx = &crypt_ctx,
- .crypt_fn = decrypt_callback,
- };
- int ret;
-
- desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
- ret = xts_crypt(desc, dst, src, nbytes, &req);
- serpent_fpu_end(crypt_ctx.fpu_enabled);
-
- return ret;
-}
-
-static struct crypto_alg serpent_algs[10] = { {
- .cra_name = "__ecb-serpent-sse2",
- .cra_driver_name = "__driver-ecb-serpent-sse2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct serpent_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .setkey = serpent_setkey,
- .encrypt = ecb_encrypt,
- .decrypt = ecb_decrypt,
- },
- },
-}, {
- .cra_name = "__cbc-serpent-sse2",
- .cra_driver_name = "__driver-cbc-serpent-sse2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct serpent_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .setkey = serpent_setkey,
- .encrypt = cbc_encrypt,
- .decrypt = cbc_decrypt,
- },
- },
-}, {
- .cra_name = "__ctr-serpent-sse2",
- .cra_driver_name = "__driver-ctr-serpent-sse2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct serpent_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = serpent_setkey,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
- },
- },
-}, {
- .cra_name = "__lrw-serpent-sse2",
- .cra_driver_name = "__driver-lrw-serpent-sse2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct serpent_lrw_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_exit = lrw_exit_tfm,
- .cra_u = {
- .blkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE +
- SERPENT_BLOCK_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE +
- SERPENT_BLOCK_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = lrw_serpent_setkey,
- .encrypt = lrw_encrypt,
- .decrypt = lrw_decrypt,
- },
- },
-}, {
- .cra_name = "__xts-serpent-sse2",
- .cra_driver_name = "__driver-xts-serpent-sse2",
- .cra_priority = 0,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER |
- CRYPTO_ALG_INTERNAL,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct serpent_xts_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_u = {
- .blkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE * 2,
- .max_keysize = SERPENT_MAX_KEY_SIZE * 2,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = xts_serpent_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
- },
- },
-}, {
- .cra_name = "ecb(serpent)",
- .cra_driver_name = "ecb-serpent-sse2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-}, {
- .cra_name = "cbc(serpent)",
- .cra_driver_name = "cbc-serpent-sse2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = __ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-}, {
- .cra_name = "ctr(serpent)",
- .cra_driver_name = "ctr-serpent-sse2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = 1,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_encrypt,
- .geniv = "chainiv",
- },
- },
-}, {
- .cra_name = "lrw(serpent)",
- .cra_driver_name = "lrw-serpent-sse2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE +
- SERPENT_BLOCK_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE +
- SERPENT_BLOCK_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-}, {
- .cra_name = "xts(serpent)",
- .cra_driver_name = "xts-serpent-sse2",
- .cra_priority = 400,
- .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC,
- .cra_blocksize = SERPENT_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct async_helper_ctx),
- .cra_alignmask = 0,
- .cra_type = &crypto_ablkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_init = ablk_init,
- .cra_exit = ablk_exit,
- .cra_u = {
- .ablkcipher = {
- .min_keysize = SERPENT_MIN_KEY_SIZE * 2,
- .max_keysize = SERPENT_MAX_KEY_SIZE * 2,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = ablk_set_key,
- .encrypt = ablk_encrypt,
- .decrypt = ablk_decrypt,
- },
- },
-} };
+static struct simd_skcipher_alg *serpent_simd_algs[ARRAY_SIZE(serpent_algs)];
static int __init serpent_sse2_init(void)
{
@@ -605,12 +221,15 @@ static int __init serpent_sse2_init(void)
return -ENODEV;
}
- return crypto_register_algs(serpent_algs, ARRAY_SIZE(serpent_algs));
+ return simd_register_skciphers_compat(serpent_algs,
+ ARRAY_SIZE(serpent_algs),
+ serpent_simd_algs);
}
static void __exit serpent_sse2_exit(void)
{
- crypto_unregister_algs(serpent_algs, ARRAY_SIZE(serpent_algs));
+ simd_unregister_skciphers(serpent_algs, ARRAY_SIZE(serpent_algs),
+ serpent_simd_algs);
}
module_init(serpent_sse2_init);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.