diff options
| -rw-r--r-- | crypto/gcm.c | 107 |
1 files changed, 73 insertions, 34 deletions
diff --git a/crypto/gcm.c b/crypto/gcm.c index 5fc3292483ef..c6547130624c 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -40,7 +40,7 @@ struct crypto_rfc4106_ctx { struct crypto_gcm_ghash_ctx { unsigned int cryptlen; struct scatterlist *src; - crypto_completion_t complete; + void (*complete)(struct aead_request *req, int err); }; struct crypto_gcm_req_priv_ctx { @@ -267,23 +267,26 @@ static int gcm_hash_final(struct aead_request *req, return crypto_ahash_final(ahreq); } -static void gcm_hash_final_done(struct crypto_async_request *areq, - int err) +static void __gcm_hash_final_done(struct aead_request *req, int err) { - struct aead_request *req = areq->data; struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx; if (!err) crypto_xor(pctx->auth_tag, pctx->iauth_tag, 16); - gctx->complete(areq, err); + gctx->complete(req, err); } -static void gcm_hash_len_done(struct crypto_async_request *areq, - int err) +static void gcm_hash_final_done(struct crypto_async_request *areq, int err) { struct aead_request *req = areq->data; + + __gcm_hash_final_done(req, err); +} + +static void __gcm_hash_len_done(struct aead_request *req, int err) +{ struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); if (!err) { @@ -292,13 +295,18 @@ static void gcm_hash_len_done(struct crypto_async_request *areq, return; } - gcm_hash_final_done(areq, err); + __gcm_hash_final_done(req, err); } -static void gcm_hash_crypt_remain_done(struct crypto_async_request *areq, - int err) +static void gcm_hash_len_done(struct crypto_async_request *areq, int err) { struct aead_request *req = areq->data; + + __gcm_hash_len_done(req, err); +} + +static void __gcm_hash_crypt_remain_done(struct aead_request *req, int err) +{ struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); if (!err) { @@ -307,13 +315,19 @@ static void gcm_hash_crypt_remain_done(struct crypto_async_request *areq, return; } - gcm_hash_len_done(areq, err); + __gcm_hash_len_done(req, err); } -static void gcm_hash_crypt_done(struct crypto_async_request *areq, - int err) +static void gcm_hash_crypt_remain_done(struct crypto_async_request *areq, + int err) { struct aead_request *req = areq->data; + + __gcm_hash_crypt_remain_done(req, err); +} + +static void __gcm_hash_crypt_done(struct aead_request *req, int err) +{ struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx; unsigned int remain; @@ -327,13 +341,18 @@ static void gcm_hash_crypt_done(struct crypto_async_request *areq, return; } - gcm_hash_crypt_remain_done(areq, err); + __gcm_hash_crypt_remain_done(req, err); } -static void gcm_hash_assoc_remain_done(struct crypto_async_request *areq, - int err) +static void gcm_hash_crypt_done(struct crypto_async_request *areq, int err) { struct aead_request *req = areq->data; + + __gcm_hash_crypt_done(req, err); +} + +static void __gcm_hash_assoc_remain_done(struct aead_request *req, int err) +{ struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx; crypto_completion_t complete; @@ -350,15 +369,21 @@ static void gcm_hash_assoc_remain_done(struct crypto_async_request *areq, } if (remain) - gcm_hash_crypt_done(areq, err); + __gcm_hash_crypt_done(req, err); else - gcm_hash_crypt_remain_done(areq, err); + __gcm_hash_crypt_remain_done(req, err); } -static void gcm_hash_assoc_done(struct crypto_async_request *areq, - int err) +static void gcm_hash_assoc_remain_done(struct crypto_async_request *areq, + int err) { struct aead_request *req = areq->data; + + __gcm_hash_assoc_remain_done(req, err); +} + +static void __gcm_hash_assoc_done(struct aead_request *req, int err) +{ struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); unsigned int remain; @@ -371,13 +396,18 @@ static void gcm_hash_assoc_done(struct crypto_async_request *areq, return; } - gcm_hash_assoc_remain_done(areq, err); + __gcm_hash_assoc_remain_done(req, err); } -static void gcm_hash_init_done(struct crypto_async_request *areq, - int err) +static void gcm_hash_assoc_done(struct crypto_async_request *areq, int err) { struct aead_request *req = areq->data; + + __gcm_hash_assoc_done(req, err); +} + +static void __gcm_hash_init_done(struct aead_request *req, int err) +{ struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); crypto_completion_t complete; unsigned int remain = 0; @@ -393,9 +423,16 @@ static void gcm_hash_init_done(struct crypto_async_request *areq, } if (remain) - gcm_hash_assoc_done(areq, err); + __gcm_hash_assoc_done(req, err); else - gcm_hash_assoc_remain_done(areq, err); + __gcm_hash_assoc_remain_done(req, err); +} + +static void gcm_hash_init_done(struct crypto_async_request *areq, int err) +{ + struct aead_request *req = areq->data; + + __gcm_hash_init_done(req, err); } static int gcm_hash(struct aead_request *req, @@ -457,10 +494,8 @@ static void gcm_enc_copy_hash(struct aead_request *req, crypto_aead_authsize(aead), 1); } -static void gcm_enc_hash_done(struct crypto_async_request *areq, - int err) +static void gcm_enc_hash_done(struct aead_request *req, int err) { - struct aead_request *req = areq->data; struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); if (!err) @@ -469,8 +504,7 @@ static void gcm_enc_hash_done(struct crypto_async_request *areq, aead_request_complete(req, err); } -static void gcm_encrypt_done(struct crypto_async_request *areq, - int err) +static void gcm_encrypt_done(struct crypto_async_request *areq, int err) { struct aead_request *req = areq->data; struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); @@ -479,9 +513,13 @@ static void gcm_encrypt_done(struct crypto_async_request *areq, err = gcm_hash(req, pctx); if (err == -EINPROGRESS || err == -EBUSY) return; + else if (!err) { + crypto_xor(pctx->auth_tag, pctx->iauth_tag, 16); + gcm_enc_copy_hash(req, pctx); + } } - gcm_enc_hash_done(areq, err); + aead_request_complete(req, err); } static int crypto_gcm_encrypt(struct aead_request *req) @@ -538,9 +576,8 @@ static void gcm_decrypt_done(struct crypto_async_request *areq, int err) aead_request_complete(req, err); } -static void gcm_dec_hash_done(struct crypto_async_request *areq, int err) +static void gcm_dec_hash_done(struct aead_request *req, int err) { - struct aead_request *req = areq->data; struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req); struct ablkcipher_request *abreq = &pctx->u.abreq; struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx; @@ -552,9 +589,11 @@ static void gcm_dec_hash_done(struct crypto_async_request *areq, int err) err = crypto_ablkcipher_decrypt(abreq); if (err == -EINPROGRESS || err == -EBUSY) return; + else if (!err) + err = crypto_gcm_verify(req, pctx); } - gcm_decrypt_done(areq, err); + aead_request_complete(req, err); } static int crypto_gcm_decrypt(struct aead_request *req) |