diff options
Diffstat (limited to 'drivers/crypto/amcc/crypto4xx_alg.c')
| -rw-r--r-- | drivers/crypto/amcc/crypto4xx_alg.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_alg.c b/drivers/crypto/amcc/crypto4xx_alg.c index ea83d0bff0e9..51fffd6c8411 100644 --- a/drivers/crypto/amcc/crypto4xx_alg.c +++ b/drivers/crypto/amcc/crypto4xx_alg.c @@ -74,32 +74,38 @@ static void set_dynamic_sa_command_1(struct dynamic_sa_ctl *sa, u32 cm, sa->sa_command_1.bf.copy_hdr = cp_hdr; } -int crypto4xx_encrypt(struct ablkcipher_request *req) +static inline int crypto4xx_crypt(struct ablkcipher_request *req, + const unsigned int ivlen, bool decrypt) { struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); - unsigned int ivlen = crypto_ablkcipher_ivsize( - crypto_ablkcipher_reqtfm(req)); __le32 iv[ivlen]; if (ivlen) crypto4xx_memcpy_to_le32(iv, req->info, ivlen); return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst, - req->nbytes, iv, ivlen, ctx->sa_out, ctx->sa_len, 0); + req->nbytes, iv, ivlen, decrypt ? ctx->sa_in : ctx->sa_out, + ctx->sa_len, 0); } -int crypto4xx_decrypt(struct ablkcipher_request *req) +int crypto4xx_encrypt_noiv(struct ablkcipher_request *req) { - struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); - unsigned int ivlen = crypto_ablkcipher_ivsize( - crypto_ablkcipher_reqtfm(req)); - __le32 iv[ivlen]; + return crypto4xx_crypt(req, 0, false); +} - if (ivlen) - crypto4xx_memcpy_to_le32(iv, req->info, ivlen); +int crypto4xx_encrypt_iv(struct ablkcipher_request *req) +{ + return crypto4xx_crypt(req, AES_IV_SIZE, false); +} - return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst, - req->nbytes, iv, ivlen, ctx->sa_in, ctx->sa_len, 0); +int crypto4xx_decrypt_noiv(struct ablkcipher_request *req) +{ + return crypto4xx_crypt(req, 0, true); +} + +int crypto4xx_decrypt_iv(struct ablkcipher_request *req) +{ + return crypto4xx_crypt(req, AES_IV_SIZE, true); } /** |