diff options
Diffstat (limited to 'crypto/ccm.c')
-rw-r--r-- | crypto/ccm.c | 380 |
1 files changed, 218 insertions, 162 deletions
diff --git a/crypto/ccm.c b/crypto/ccm.c index a4d1a5eda..cc31ea433 100644 --- a/crypto/ccm.c +++ b/crypto/ccm.c @@ -36,14 +36,20 @@ struct crypto_rfc4309_ctx { u8 nonce[3]; }; +struct crypto_rfc4309_req_ctx { + struct scatterlist src[3]; + struct scatterlist dst[3]; + struct aead_request subreq; +}; + struct crypto_ccm_req_priv_ctx { u8 odata[16]; u8 idata[16]; u8 auth_tag[16]; u32 ilen; u32 flags; - struct scatterlist src[2]; - struct scatterlist dst[2]; + struct scatterlist src[3]; + struct scatterlist dst[3]; struct ablkcipher_request abreq; }; @@ -265,7 +271,7 @@ static int crypto_ccm_auth(struct aead_request *req, struct scatterlist *plain, /* format associated data and compute into mac */ if (assoclen) { pctx->ilen = format_adata(idata, assoclen); - get_data_to_compute(cipher, pctx, req->assoc, req->assoclen); + get_data_to_compute(cipher, pctx, req->src, req->assoclen); } else { pctx->ilen = 0; } @@ -286,7 +292,8 @@ static void crypto_ccm_encrypt_done(struct crypto_async_request *areq, int err) u8 *odata = pctx->odata; if (!err) - scatterwalk_map_and_copy(odata, req->dst, req->cryptlen, + scatterwalk_map_and_copy(odata, req->dst, + req->assoclen + req->cryptlen, crypto_aead_authsize(aead), 1); aead_request_complete(req, err); } @@ -300,6 +307,41 @@ static inline int crypto_ccm_check_iv(const u8 *iv) return 0; } +static int crypto_ccm_init_crypt(struct aead_request *req, u8 *tag) +{ + struct crypto_ccm_req_priv_ctx *pctx = crypto_ccm_reqctx(req); + struct scatterlist *sg; + u8 *iv = req->iv; + int err; + + err = crypto_ccm_check_iv(iv); + if (err) + return err; + + pctx->flags = aead_request_flags(req); + + /* Note: rfc 3610 and NIST 800-38C require counter of + * zero to encrypt auth tag. + */ + memset(iv + 15 - iv[0], 0, iv[0] + 1); + + sg_init_table(pctx->src, 3); + sg_set_buf(pctx->src, tag, 16); + sg = scatterwalk_ffwd(pctx->src + 1, req->src, req->assoclen); + if (sg != pctx->src + 1) + sg_chain(pctx->src, 2, sg); + + if (req->src != req->dst) { + sg_init_table(pctx->dst, 3); + sg_set_buf(pctx->dst, tag, 16); + sg = scatterwalk_ffwd(pctx->dst + 1, req->dst, req->assoclen); + if (sg != pctx->dst + 1) + sg_chain(pctx->dst, 2, sg); + } + + return 0; +} + static int crypto_ccm_encrypt(struct aead_request *req) { struct crypto_aead *aead = crypto_aead_reqtfm(req); @@ -312,32 +354,17 @@ static int crypto_ccm_encrypt(struct aead_request *req) u8 *iv = req->iv; int err; - err = crypto_ccm_check_iv(iv); + err = crypto_ccm_init_crypt(req, odata); if (err) return err; - pctx->flags = aead_request_flags(req); - - err = crypto_ccm_auth(req, req->src, cryptlen); + err = crypto_ccm_auth(req, sg_next(pctx->src), cryptlen); if (err) return err; - /* Note: rfc 3610 and NIST 800-38C require counter of - * zero to encrypt auth tag. - */ - memset(iv + 15 - iv[0], 0, iv[0] + 1); - - sg_init_table(pctx->src, 2); - sg_set_buf(pctx->src, odata, 16); - scatterwalk_sg_chain(pctx->src, 2, req->src); - dst = pctx->src; - if (req->src != req->dst) { - sg_init_table(pctx->dst, 2); - sg_set_buf(pctx->dst, odata, 16); - scatterwalk_sg_chain(pctx->dst, 2, req->dst); + if (req->src != req->dst) dst = pctx->dst; - } ablkcipher_request_set_tfm(abreq, ctx->ctr); ablkcipher_request_set_callback(abreq, pctx->flags, @@ -348,7 +375,7 @@ static int crypto_ccm_encrypt(struct aead_request *req) return err; /* copy authtag to end of dst */ - scatterwalk_map_and_copy(odata, req->dst, cryptlen, + scatterwalk_map_and_copy(odata, sg_next(dst), cryptlen, crypto_aead_authsize(aead), 1); return err; } @@ -361,9 +388,14 @@ static void crypto_ccm_decrypt_done(struct crypto_async_request *areq, struct crypto_aead *aead = crypto_aead_reqtfm(req); unsigned int authsize = crypto_aead_authsize(aead); unsigned int cryptlen = req->cryptlen - authsize; + struct scatterlist *dst; + + pctx->flags = 0; + + dst = sg_next(req->src == req->dst ? pctx->src : pctx->dst); if (!err) { - err = crypto_ccm_auth(req, req->dst, cryptlen); + err = crypto_ccm_auth(req, dst, cryptlen); if (!err && crypto_memneq(pctx->auth_tag, pctx->odata, authsize)) err = -EBADMSG; } @@ -384,31 +416,18 @@ static int crypto_ccm_decrypt(struct aead_request *req) u8 *iv = req->iv; int err; - if (cryptlen < authsize) - return -EINVAL; cryptlen -= authsize; - err = crypto_ccm_check_iv(iv); + err = crypto_ccm_init_crypt(req, authtag); if (err) return err; - pctx->flags = aead_request_flags(req); - - scatterwalk_map_and_copy(authtag, req->src, cryptlen, authsize, 0); - - memset(iv + 15 - iv[0], 0, iv[0] + 1); - - sg_init_table(pctx->src, 2); - sg_set_buf(pctx->src, authtag, 16); - scatterwalk_sg_chain(pctx->src, 2, req->src); + scatterwalk_map_and_copy(authtag, sg_next(pctx->src), cryptlen, + authsize, 0); dst = pctx->src; - if (req->src != req->dst) { - sg_init_table(pctx->dst, 2); - sg_set_buf(pctx->dst, authtag, 16); - scatterwalk_sg_chain(pctx->dst, 2, req->dst); + if (req->src != req->dst) dst = pctx->dst; - } ablkcipher_request_set_tfm(abreq, ctx->ctr); ablkcipher_request_set_callback(abreq, pctx->flags, @@ -418,7 +437,7 @@ static int crypto_ccm_decrypt(struct aead_request *req) if (err) return err; - err = crypto_ccm_auth(req, req->dst, cryptlen); + err = crypto_ccm_auth(req, sg_next(dst), cryptlen); if (err) return err; @@ -429,11 +448,11 @@ static int crypto_ccm_decrypt(struct aead_request *req) return err; } -static int crypto_ccm_init_tfm(struct crypto_tfm *tfm) +static int crypto_ccm_init_tfm(struct crypto_aead *tfm) { - struct crypto_instance *inst = (void *)tfm->__crt_alg; - struct ccm_instance_ctx *ictx = crypto_instance_ctx(inst); - struct crypto_ccm_ctx *ctx = crypto_tfm_ctx(tfm); + struct aead_instance *inst = aead_alg_instance(tfm); + struct ccm_instance_ctx *ictx = aead_instance_ctx(inst); + struct crypto_ccm_ctx *ctx = crypto_aead_ctx(tfm); struct crypto_cipher *cipher; struct crypto_ablkcipher *ctr; unsigned long align; @@ -451,9 +470,10 @@ static int crypto_ccm_init_tfm(struct crypto_tfm *tfm) ctx->cipher = cipher; ctx->ctr = ctr; - align = crypto_tfm_alg_alignmask(tfm); + align = crypto_aead_alignmask(tfm); align &= ~(crypto_tfm_ctx_alignment() - 1); - crypto_aead_set_reqsize(__crypto_aead_cast(tfm), + crypto_aead_set_reqsize( + tfm, align + sizeof(struct crypto_ccm_req_priv_ctx) + crypto_ablkcipher_reqsize(ctr)); @@ -464,21 +484,31 @@ err_free_cipher: return err; } -static void crypto_ccm_exit_tfm(struct crypto_tfm *tfm) +static void crypto_ccm_exit_tfm(struct crypto_aead *tfm) { - struct crypto_ccm_ctx *ctx = crypto_tfm_ctx(tfm); + struct crypto_ccm_ctx *ctx = crypto_aead_ctx(tfm); crypto_free_cipher(ctx->cipher); crypto_free_ablkcipher(ctx->ctr); } -static struct crypto_instance *crypto_ccm_alloc_common(struct rtattr **tb, - const char *full_name, - const char *ctr_name, - const char *cipher_name) +static void crypto_ccm_free(struct aead_instance *inst) +{ + struct ccm_instance_ctx *ctx = aead_instance_ctx(inst); + + crypto_drop_spawn(&ctx->cipher); + crypto_drop_skcipher(&ctx->ctr); + kfree(inst); +} + +static int crypto_ccm_create_common(struct crypto_template *tmpl, + struct rtattr **tb, + const char *full_name, + const char *ctr_name, + const char *cipher_name) { struct crypto_attr_type *algt; - struct crypto_instance *inst; + struct aead_instance *inst; struct crypto_alg *ctr; struct crypto_alg *cipher; struct ccm_instance_ctx *ictx; @@ -486,15 +516,15 @@ static struct crypto_instance *crypto_ccm_alloc_common(struct rtattr **tb, algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) - return ERR_CAST(algt); + return PTR_ERR(algt); if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask) - return ERR_PTR(-EINVAL); + return -EINVAL; cipher = crypto_alg_mod_lookup(cipher_name, CRYPTO_ALG_TYPE_CIPHER, CRYPTO_ALG_TYPE_MASK); if (IS_ERR(cipher)) - return ERR_CAST(cipher); + return PTR_ERR(cipher); err = -EINVAL; if (cipher->cra_blocksize != 16) @@ -505,14 +535,15 @@ static struct crypto_instance *crypto_ccm_alloc_common(struct rtattr **tb, if (!inst) goto out_put_cipher; - ictx = crypto_instance_ctx(inst); + ictx = aead_instance_ctx(inst); - err = crypto_init_spawn(&ictx->cipher, cipher, inst, + err = crypto_init_spawn(&ictx->cipher, cipher, + aead_crypto_instance(inst), CRYPTO_ALG_TYPE_MASK); if (err) goto err_free_inst; - crypto_set_skcipher_spawn(&ictx->ctr, inst); + crypto_set_skcipher_spawn(&ictx->ctr, aead_crypto_instance(inst)); err = crypto_grab_skcipher(&ictx->ctr, ctr_name, 0, crypto_requires_sync(algt->type, algt->mask)); @@ -531,33 +562,39 @@ static struct crypto_instance *crypto_ccm_alloc_common(struct rtattr **tb, goto err_drop_ctr; err = -ENAMETOOLONG; - if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, + if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "ccm_base(%s,%s)", ctr->cra_driver_name, cipher->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) goto err_drop_ctr; - memcpy(inst->alg.cra_name, full_name, CRYPTO_MAX_ALG_NAME); - - inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD; - inst->alg.cra_flags |= ctr->cra_flags & CRYPTO_ALG_ASYNC; - inst->alg.cra_priority = cipher->cra_priority + ctr->cra_priority; - inst->alg.cra_blocksize = 1; - inst->alg.cra_alignmask = cipher->cra_alignmask | ctr->cra_alignmask | - (__alignof__(u32) - 1); - inst->alg.cra_type = &crypto_aead_type; - inst->alg.cra_aead.ivsize = 16; - inst->alg.cra_aead.maxauthsize = 16; - inst->alg.cra_ctxsize = sizeof(struct crypto_ccm_ctx); - inst->alg.cra_init = crypto_ccm_init_tfm; - inst->alg.cra_exit = crypto_ccm_exit_tfm; - inst->alg.cra_aead.setkey = crypto_ccm_setkey; - inst->alg.cra_aead.setauthsize = crypto_ccm_setauthsize; - inst->alg.cra_aead.encrypt = crypto_ccm_encrypt; - inst->alg.cra_aead.decrypt = crypto_ccm_decrypt; + memcpy(inst->alg.base.cra_name, full_name, CRYPTO_MAX_ALG_NAME); + + inst->alg.base.cra_flags = ctr->cra_flags & CRYPTO_ALG_ASYNC; + inst->alg.base.cra_priority = (cipher->cra_priority + + ctr->cra_priority) / 2; + inst->alg.base.cra_blocksize = 1; + inst->alg.base.cra_alignmask = cipher->cra_alignmask | + ctr->cra_alignmask | + (__alignof__(u32) - 1); + inst->alg.ivsize = 16; + inst->alg.maxauthsize = 16; + inst->alg.base.cra_ctxsize = sizeof(struct crypto_ccm_ctx); + inst->alg.init = crypto_ccm_init_tfm; + inst->alg.exit = crypto_ccm_exit_tfm; + inst->alg.setkey = crypto_ccm_setkey; + inst->alg.setauthsize = crypto_ccm_setauthsize; + inst->alg.encrypt = crypto_ccm_encrypt; + inst->alg.decrypt = crypto_ccm_decrypt; + + inst->free = crypto_ccm_free; + + err = aead_register_instance(tmpl, inst); + if (err) + goto err_drop_ctr; -out: +out_put_cipher: crypto_mod_put(cipher); - return inst; + return err; err_drop_ctr: crypto_drop_skcipher(&ictx->ctr); @@ -565,12 +602,10 @@ err_drop_cipher: crypto_drop_spawn(&ictx->cipher); err_free_inst: kfree(inst); -out_put_cipher: - inst = ERR_PTR(err); - goto out; + goto out_put_cipher; } -static struct crypto_instance *crypto_ccm_alloc(struct rtattr **tb) +static int crypto_ccm_create(struct crypto_template *tmpl, struct rtattr **tb) { const char *cipher_name; char ctr_name[CRYPTO_MAX_ALG_NAME]; @@ -578,36 +613,28 @@ static struct crypto_instance *crypto_ccm_alloc(struct rtattr **tb) cipher_name = crypto_attr_alg_name(tb[1]); if (IS_ERR(cipher_name)) - return ERR_CAST(cipher_name); + return PTR_ERR(cipher_name); if (snprintf(ctr_name, CRYPTO_MAX_ALG_NAME, "ctr(%s)", cipher_name) >= CRYPTO_MAX_ALG_NAME) - return ERR_PTR(-ENAMETOOLONG); + return -ENAMETOOLONG; if (snprintf(full_name, CRYPTO_MAX_ALG_NAME, "ccm(%s)", cipher_name) >= CRYPTO_MAX_ALG_NAME) - return ERR_PTR(-ENAMETOOLONG); + return -ENAMETOOLONG; - return crypto_ccm_alloc_common(tb, full_name, ctr_name, cipher_name); -} - -static void crypto_ccm_free(struct crypto_instance *inst) -{ - struct ccm_instance_ctx *ctx = crypto_instance_ctx(inst); - - crypto_drop_spawn(&ctx->cipher); - crypto_drop_skcipher(&ctx->ctr); - kfree(inst); + return crypto_ccm_create_common(tmpl, tb, full_name, ctr_name, + cipher_name); } static struct crypto_template crypto_ccm_tmpl = { .name = "ccm", - .alloc = crypto_ccm_alloc, - .free = crypto_ccm_free, + .create = crypto_ccm_create, .module = THIS_MODULE, }; -static struct crypto_instance *crypto_ccm_base_alloc(struct rtattr **tb) +static int crypto_ccm_base_create(struct crypto_template *tmpl, + struct rtattr **tb) { const char *ctr_name; const char *cipher_name; @@ -615,23 +642,23 @@ static struct crypto_instance *crypto_ccm_base_alloc(struct rtattr **tb) ctr_name = crypto_attr_alg_name(tb[1]); if (IS_ERR(ctr_name)) - return ERR_CAST(ctr_name); + return PTR_ERR(ctr_name); cipher_name = crypto_attr_alg_name(tb[2]); if (IS_ERR(cipher_name)) - return ERR_CAST(cipher_name); + return PTR_ERR(cipher_name); if (snprintf(full_name, CRYPTO_MAX_ALG_NAME, "ccm_base(%s,%s)", ctr_name, cipher_name) >= CRYPTO_MAX_ALG_NAME) - return ERR_PTR(-ENAMETOOLONG); + return -ENAMETOOLONG; - return crypto_ccm_alloc_common(tb, full_name, ctr_name, cipher_name); + return crypto_ccm_create_common(tmpl, tb, full_name, ctr_name, + cipher_name); } static struct crypto_template crypto_ccm_base_tmpl = { .name = "ccm_base", - .alloc = crypto_ccm_base_alloc, - .free = crypto_ccm_free, + .create = crypto_ccm_base_create, .module = THIS_MODULE, }; @@ -677,10 +704,12 @@ static int crypto_rfc4309_setauthsize(struct crypto_aead *parent, static struct aead_request *crypto_rfc4309_crypt(struct aead_request *req) { - struct aead_request *subreq = aead_request_ctx(req); + struct crypto_rfc4309_req_ctx *rctx = aead_request_ctx(req); + struct aead_request *subreq = &rctx->subreq; struct crypto_aead *aead = crypto_aead_reqtfm(req); struct crypto_rfc4309_ctx *ctx = crypto_aead_ctx(aead); struct crypto_aead *child = ctx->child; + struct scatterlist *sg; u8 *iv = PTR_ALIGN((u8 *)(subreq + 1) + crypto_aead_reqsize(child), crypto_aead_alignmask(child) + 1); @@ -690,17 +719,38 @@ static struct aead_request *crypto_rfc4309_crypt(struct aead_request *req) memcpy(iv + 1, ctx->nonce, 3); memcpy(iv + 4, req->iv, 8); + scatterwalk_map_and_copy(iv + 16, req->src, 0, req->assoclen - 8, 0); + + sg_init_table(rctx->src, 3); + sg_set_buf(rctx->src, iv + 16, 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 + 16, req->assoclen - 8); + sg = scatterwalk_ffwd(rctx->dst + 1, req->dst, req->assoclen); + if (sg != rctx->dst + 1) + sg_chain(rctx->dst, 2, sg); + } + aead_request_set_tfm(subreq, child); aead_request_set_callback(subreq, req->base.flags, req->base.complete, req->base.data); - aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, iv); - aead_request_set_assoc(subreq, req->assoc, req->assoclen); + aead_request_set_crypt(subreq, rctx->src, + req->src == req->dst ? rctx->src : rctx->dst, + req->cryptlen, iv); + aead_request_set_ad(subreq, req->assoclen - 8); return subreq; } static int crypto_rfc4309_encrypt(struct aead_request *req) { + if (req->assoclen != 16 && req->assoclen != 20) + return -EINVAL; + req = crypto_rfc4309_crypt(req); return crypto_aead_encrypt(req); @@ -708,16 +758,19 @@ static int crypto_rfc4309_encrypt(struct aead_request *req) static int crypto_rfc4309_decrypt(struct aead_request *req) { + if (req->assoclen != 16 && req->assoclen != 20) + return -EINVAL; + req = crypto_rfc4309_crypt(req); return crypto_aead_decrypt(req); } -static int crypto_rfc4309_init_tfm(struct crypto_tfm *tfm) +static int crypto_rfc4309_init_tfm(struct crypto_aead *tfm) { - struct crypto_instance *inst = (void *)tfm->__crt_alg; - struct crypto_aead_spawn *spawn = crypto_instance_ctx(inst); - struct crypto_rfc4309_ctx *ctx = crypto_tfm_ctx(tfm); + struct aead_instance *inst = aead_alg_instance(tfm); + struct crypto_aead_spawn *spawn = aead_instance_ctx(inst); + struct crypto_rfc4309_ctx *ctx = crypto_aead_ctx(tfm); struct crypto_aead *aead; unsigned long align; @@ -729,115 +782,118 @@ static int crypto_rfc4309_init_tfm(struct crypto_tfm *tfm) align = crypto_aead_alignmask(aead); align &= ~(crypto_tfm_ctx_alignment() - 1); - crypto_aead_set_reqsize(__crypto_aead_cast(tfm), - sizeof(struct aead_request) + + crypto_aead_set_reqsize( + tfm, + sizeof(struct crypto_rfc4309_req_ctx) + ALIGN(crypto_aead_reqsize(aead), crypto_tfm_ctx_alignment()) + - align + 16); + align + 32); return 0; } -static void crypto_rfc4309_exit_tfm(struct crypto_tfm *tfm) +static void crypto_rfc4309_exit_tfm(struct crypto_aead *tfm) { - struct crypto_rfc4309_ctx *ctx = crypto_tfm_ctx(tfm); + struct crypto_rfc4309_ctx *ctx = crypto_aead_ctx(tfm); crypto_free_aead(ctx->child); } -static struct crypto_instance *crypto_rfc4309_alloc(struct rtattr **tb) +static void crypto_rfc4309_free(struct aead_instance *inst) +{ + crypto_drop_aead(aead_instance_ctx(inst)); + kfree(inst); +} + +static int crypto_rfc4309_create(struct crypto_template *tmpl, + struct rtattr **tb) { struct crypto_attr_type *algt; - struct crypto_instance *inst; + struct aead_instance *inst; struct crypto_aead_spawn *spawn; - struct crypto_alg *alg; + struct aead_alg *alg; const char *ccm_name; int err; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) - return ERR_CAST(algt); + return PTR_ERR(algt); if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask) - return ERR_PTR(-EINVAL); + return -EINVAL; ccm_name = crypto_attr_alg_name(tb[1]); if (IS_ERR(ccm_name)) - return ERR_CAST(ccm_name); + return PTR_ERR(ccm_name); inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL); if (!inst) - return ERR_PTR(-ENOMEM); + return -ENOMEM; - spawn = crypto_instance_ctx(inst); - crypto_set_aead_spawn(spawn, inst); + spawn = aead_instance_ctx(inst); + crypto_set_aead_spawn(spawn, aead_crypto_instance(inst)); err = crypto_grab_aead(spawn, ccm_name, 0, crypto_requires_sync(algt->type, algt->mask)); if (err) goto out_free_inst; - alg = crypto_aead_spawn_alg(spawn); + alg = crypto_spawn_aead_alg(spawn); err = -EINVAL; /* We only support 16-byte blocks. */ - if (alg->cra_aead.ivsize != 16) + if (crypto_aead_alg_ivsize(alg) != 16) goto out_drop_alg; /* Not a stream cipher? */ - if (alg->cra_blocksize != 1) + if (alg->base.cra_blocksize != 1) goto out_drop_alg; err = -ENAMETOOLONG; - if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, - "rfc4309(%s)", alg->cra_name) >= CRYPTO_MAX_ALG_NAME || - snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, - "rfc4309(%s)", alg->cra_driver_name) >= + if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME, + "rfc4309(%s)", alg->base.cra_name) >= + CRYPTO_MAX_ALG_NAME || + snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME, + "rfc4309(%s)", alg->base.cra_driver_name) >= CRYPTO_MAX_ALG_NAME) goto out_drop_alg; - inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD; - inst->alg.cra_flags |= alg->cra_flags & CRYPTO_ALG_ASYNC; - inst->alg.cra_priority = alg->cra_priority; - inst->alg.cra_blocksize = 1; - inst->alg.cra_alignmask = alg->cra_alignmask; - inst->alg.cra_type = &crypto_nivaead_type; + inst->alg.base.cra_flags = alg->base.cra_flags & CRYPTO_ALG_ASYNC; + inst->alg.base.cra_priority = alg->base.cra_priority; + inst->alg.base.cra_blocksize = 1; + inst->alg.base.cra_alignmask = alg->base.cra_alignmask; - inst->alg.cra_aead.ivsize = 8; - inst->alg.cra_aead.maxauthsize = 16; + inst->alg.ivsize = 8; + inst->alg.maxauthsize = 16; - inst->alg.cra_ctxsize = sizeof(struct crypto_rfc4309_ctx); + inst->alg.base.cra_ctxsize = sizeof(struct crypto_rfc4309_ctx); - inst->alg.cra_init = crypto_rfc4309_init_tfm; - inst->alg.cra_exit = crypto_rfc4309_exit_tfm; + inst->alg.init = crypto_rfc4309_init_tfm; + inst->alg.exit = crypto_rfc4309_exit_tfm; - inst->alg.cra_aead.setkey = crypto_rfc4309_setkey; - inst->alg.cra_aead.setauthsize = crypto_rfc4309_setauthsize; - inst->alg.cra_aead.encrypt = crypto_rfc4309_encrypt; - inst->alg.cra_aead.decrypt = crypto_rfc4309_decrypt; + inst->alg.setkey = crypto_rfc4309_setkey; + inst->alg.setauthsize = crypto_rfc4309_setauthsize; + inst->alg.encrypt = crypto_rfc4309_encrypt; + inst->alg.decrypt = crypto_rfc4309_decrypt; - inst->alg.cra_aead.geniv = "seqiv"; + inst->free = crypto_rfc4309_free; + + err = aead_register_instance(tmpl, inst); + if (err) + goto out_drop_alg; out: - return inst; + return err; out_drop_alg: crypto_drop_aead(spawn); out_free_inst: kfree(inst); - inst = ERR_PTR(err); goto out; } -static void crypto_rfc4309_free(struct crypto_instance *inst) -{ - crypto_drop_spawn(crypto_instance_ctx(inst)); - kfree(inst); -} - static struct crypto_template crypto_rfc4309_tmpl = { .name = "rfc4309", - .alloc = crypto_rfc4309_alloc, - .free = crypto_rfc4309_free, + .create = crypto_rfc4309_create, .module = THIS_MODULE, }; |