diff options
Diffstat (limited to 'crypto/gcm.c')
-rw-r--r-- | crypto/gcm.c | 55 |
1 files changed, 18 insertions, 37 deletions
diff --git a/crypto/gcm.c b/crypto/gcm.c index 3841b5eafa7e..8589681fb9f6 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -14,9 +14,9 @@ #include <crypto/internal/hash.h> #include <crypto/null.h> #include <crypto/scatterwalk.h> +#include <crypto/gcm.h> #include <crypto/hash.h> #include "internal.h" -#include <linux/completion.h> #include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> @@ -78,11 +78,6 @@ struct crypto_gcm_req_priv_ctx { } u; }; -struct crypto_gcm_setkey_result { - int err; - struct completion completion; -}; - static struct { u8 buf[16]; struct scatterlist sg; @@ -98,17 +93,6 @@ static inline struct crypto_gcm_req_priv_ctx *crypto_gcm_reqctx( return (void *)PTR_ALIGN((u8 *)aead_request_ctx(req), align + 1); } -static void crypto_gcm_setkey_done(struct crypto_async_request *req, int err) -{ - struct crypto_gcm_setkey_result *result = req->data; - - if (err == -EINPROGRESS) - return; - - result->err = err; - complete(&result->completion); -} - static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key, unsigned int keylen) { @@ -119,7 +103,7 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key, be128 hash; u8 iv[16]; - struct crypto_gcm_setkey_result result; + struct crypto_wait wait; struct scatterlist sg[1]; struct skcipher_request req; @@ -140,21 +124,18 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key, if (!data) return -ENOMEM; - init_completion(&data->result.completion); + crypto_init_wait(&data->wait); sg_init_one(data->sg, &data->hash, sizeof(data->hash)); skcipher_request_set_tfm(&data->req, ctr); skcipher_request_set_callback(&data->req, CRYPTO_TFM_REQ_MAY_SLEEP | CRYPTO_TFM_REQ_MAY_BACKLOG, - crypto_gcm_setkey_done, - &data->result); + crypto_req_done, + &data->wait); skcipher_request_set_crypt(&data->req, data->sg, data->sg, sizeof(data->hash), data->iv); - err = crypto_skcipher_encrypt(&data->req); - if (err == -EINPROGRESS || err == -EBUSY) { - wait_for_completion(&data->result.completion); - err = data->result.err; - } + err = crypto_wait_req(crypto_skcipher_encrypt(&data->req), + &data->wait); if (err) goto out; @@ -197,8 +178,8 @@ static void crypto_gcm_init_common(struct aead_request *req) struct scatterlist *sg; memset(pctx->auth_tag, 0, sizeof(pctx->auth_tag)); - memcpy(pctx->iv, req->iv, 12); - memcpy(pctx->iv + 12, &counter, 4); + memcpy(pctx->iv, req->iv, GCM_AES_IV_SIZE); + memcpy(pctx->iv + GCM_AES_IV_SIZE, &counter, 4); sg_init_table(pctx->src, 3); sg_set_buf(pctx->src, pctx->auth_tag, sizeof(pctx->auth_tag)); @@ -695,7 +676,7 @@ static int crypto_gcm_create_common(struct crypto_template *tmpl, inst->alg.base.cra_alignmask = ghash->base.cra_alignmask | ctr->base.cra_alignmask; inst->alg.base.cra_ctxsize = sizeof(struct crypto_gcm_ctx); - inst->alg.ivsize = 12; + inst->alg.ivsize = GCM_AES_IV_SIZE; inst->alg.chunksize = crypto_skcipher_alg_chunksize(ctr); inst->alg.maxauthsize = 16; inst->alg.init = crypto_gcm_init_tfm; @@ -832,20 +813,20 @@ static struct aead_request *crypto_rfc4106_crypt(struct aead_request *req) u8 *iv = PTR_ALIGN((u8 *)(subreq + 1) + crypto_aead_reqsize(child), crypto_aead_alignmask(child) + 1); - scatterwalk_map_and_copy(iv + 12, req->src, 0, req->assoclen - 8, 0); + scatterwalk_map_and_copy(iv + GCM_AES_IV_SIZE, req->src, 0, req->assoclen - 8, 0); memcpy(iv, ctx->nonce, 4); memcpy(iv + 4, req->iv, 8); sg_init_table(rctx->src, 3); - sg_set_buf(rctx->src, iv + 12, req->assoclen - 8); + sg_set_buf(rctx->src, iv + GCM_AES_IV_SIZE, req->assoclen - 8); sg = scatterwalk_ffwd(rctx->src + 1, req->src, req->assoclen); if (sg != rctx->src + 1) sg_chain(rctx->src, 2, sg); if (req->src != req->dst) { sg_init_table(rctx->dst, 3); - sg_set_buf(rctx->dst, iv + 12, req->assoclen - 8); + sg_set_buf(rctx->dst, iv + GCM_AES_IV_SIZE, req->assoclen - 8); sg = scatterwalk_ffwd(rctx->dst + 1, req->dst, req->assoclen); if (sg != rctx->dst + 1) sg_chain(rctx->dst, 2, sg); @@ -957,7 +938,7 @@ static int crypto_rfc4106_create(struct crypto_template *tmpl, err = -EINVAL; /* Underlying IV size must be 12. */ - if (crypto_aead_alg_ivsize(alg) != 12) + if (crypto_aead_alg_ivsize(alg) != GCM_AES_IV_SIZE) goto out_drop_alg; /* Not a stream cipher? */ @@ -980,7 +961,7 @@ static int crypto_rfc4106_create(struct crypto_template *tmpl, inst->alg.base.cra_ctxsize = sizeof(struct crypto_rfc4106_ctx); - inst->alg.ivsize = 8; + inst->alg.ivsize = GCM_RFC4106_IV_SIZE; inst->alg.chunksize = crypto_aead_alg_chunksize(alg); inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); @@ -1134,7 +1115,7 @@ static int crypto_rfc4543_init_tfm(struct crypto_aead *tfm) tfm, sizeof(struct crypto_rfc4543_req_ctx) + ALIGN(crypto_aead_reqsize(aead), crypto_tfm_ctx_alignment()) + - align + 12); + align + GCM_AES_IV_SIZE); return 0; @@ -1199,7 +1180,7 @@ static int crypto_rfc4543_create(struct crypto_template *tmpl, err = -EINVAL; /* Underlying IV size must be 12. */ - if (crypto_aead_alg_ivsize(alg) != 12) + if (crypto_aead_alg_ivsize(alg) != GCM_AES_IV_SIZE) goto out_drop_alg; /* Not a stream cipher? */ @@ -1222,7 +1203,7 @@ static int crypto_rfc4543_create(struct crypto_template *tmpl, inst->alg.base.cra_ctxsize = sizeof(struct crypto_rfc4543_ctx); - inst->alg.ivsize = 8; + inst->alg.ivsize = GCM_RFC4543_IV_SIZE; inst->alg.chunksize = crypto_aead_alg_chunksize(alg); inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); |