diff options
Diffstat (limited to 'drivers/crypto/ccp')
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto-aes-xts.c | 43 | ||||
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto.h | 3 |
2 files changed, 21 insertions, 25 deletions
diff --git a/drivers/crypto/ccp/ccp-crypto-aes-xts.c b/drivers/crypto/ccp/ccp-crypto-aes-xts.c index 0d0d4529ee36..58a4244b4752 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-xts.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-xts.c @@ -14,9 +14,8 @@ #include <linux/sched.h> #include <linux/delay.h> #include <linux/scatterlist.h> -#include <linux/crypto.h> -#include <crypto/algapi.h> #include <crypto/aes.h> +#include <crypto/internal/skcipher.h> #include <crypto/scatterwalk.h> #include "ccp-crypto.h" @@ -110,15 +109,12 @@ static int ccp_aes_xts_setkey(struct crypto_ablkcipher *tfm, const u8 *key, ctx->u.aes.key_len = key_len / 2; sg_init_one(&ctx->u.aes.key_sg, ctx->u.aes.key, key_len); - return crypto_ablkcipher_setkey(ctx->u.aes.tfm_ablkcipher, key, - key_len); + return crypto_skcipher_setkey(ctx->u.aes.tfm_skcipher, key, key_len); } static int ccp_aes_xts_crypt(struct ablkcipher_request *req, unsigned int encrypt) { - struct crypto_tfm *tfm = - crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req)); struct ccp_ctx *ctx = crypto_tfm_ctx(req->base.tfm); struct ccp_aes_req_ctx *rctx = ablkcipher_request_ctx(req); unsigned int unit; @@ -146,14 +142,19 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req, if ((unit_size == CCP_XTS_AES_UNIT_SIZE__LAST) || (ctx->u.aes.key_len != AES_KEYSIZE_128)) { + SKCIPHER_REQUEST_ON_STACK(subreq, ctx->u.aes.tfm_skcipher); + /* Use the fallback to process the request for any * unsupported unit sizes or key sizes */ - ablkcipher_request_set_tfm(req, ctx->u.aes.tfm_ablkcipher); - ret = (encrypt) ? crypto_ablkcipher_encrypt(req) : - crypto_ablkcipher_decrypt(req); - ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm)); - + skcipher_request_set_tfm(subreq, ctx->u.aes.tfm_skcipher); + skcipher_request_set_callback(subreq, req->base.flags, + NULL, NULL); + skcipher_request_set_crypt(subreq, req->src, req->dst, + req->nbytes, req->info); + ret = encrypt ? crypto_skcipher_encrypt(subreq) : + crypto_skcipher_decrypt(subreq); + skcipher_request_zero(subreq); return ret; } @@ -192,23 +193,21 @@ static int ccp_aes_xts_decrypt(struct ablkcipher_request *req) static int ccp_aes_xts_cra_init(struct crypto_tfm *tfm) { struct ccp_ctx *ctx = crypto_tfm_ctx(tfm); - struct crypto_ablkcipher *fallback_tfm; + struct crypto_skcipher *fallback_tfm; ctx->complete = ccp_aes_xts_complete; ctx->u.aes.key_len = 0; - fallback_tfm = crypto_alloc_ablkcipher(crypto_tfm_alg_name(tfm), 0, - CRYPTO_ALG_ASYNC | - CRYPTO_ALG_NEED_FALLBACK); + fallback_tfm = crypto_alloc_skcipher("xts(aes)", 0, + CRYPTO_ALG_ASYNC | + CRYPTO_ALG_NEED_FALLBACK); if (IS_ERR(fallback_tfm)) { - pr_warn("could not load fallback driver %s\n", - crypto_tfm_alg_name(tfm)); + pr_warn("could not load fallback driver xts(aes)\n"); return PTR_ERR(fallback_tfm); } - ctx->u.aes.tfm_ablkcipher = fallback_tfm; + ctx->u.aes.tfm_skcipher = fallback_tfm; - tfm->crt_ablkcipher.reqsize = sizeof(struct ccp_aes_req_ctx) + - fallback_tfm->base.crt_ablkcipher.reqsize; + tfm->crt_ablkcipher.reqsize = sizeof(struct ccp_aes_req_ctx); return 0; } @@ -217,9 +216,7 @@ static void ccp_aes_xts_cra_exit(struct crypto_tfm *tfm) { struct ccp_ctx *ctx = crypto_tfm_ctx(tfm); - if (ctx->u.aes.tfm_ablkcipher) - crypto_free_ablkcipher(ctx->u.aes.tfm_ablkcipher); - ctx->u.aes.tfm_ablkcipher = NULL; + crypto_free_skcipher(ctx->u.aes.tfm_skcipher); } static int ccp_register_aes_xts_alg(struct list_head *head, diff --git a/drivers/crypto/ccp/ccp-crypto.h b/drivers/crypto/ccp/ccp-crypto.h index a326ec20bfa8..8335b32e815e 100644 --- a/drivers/crypto/ccp/ccp-crypto.h +++ b/drivers/crypto/ccp/ccp-crypto.h @@ -17,7 +17,6 @@ #include <linux/wait.h> #include <linux/pci.h> #include <linux/ccp.h> -#include <linux/crypto.h> #include <crypto/algapi.h> #include <crypto/aes.h> #include <crypto/ctr.h> @@ -69,7 +68,7 @@ static inline struct ccp_crypto_ahash_alg * /***** AES related defines *****/ struct ccp_aes_ctx { /* Fallback cipher for XTS with unsupported unit sizes */ - struct crypto_ablkcipher *tfm_ablkcipher; + struct crypto_skcipher *tfm_skcipher; /* Cipher used to generate CMAC K1/K2 keys */ struct crypto_cipher *tfm_cipher; |