diff options
| -rw-r--r-- | crypto/aead.c | 606 | ||||
| -rw-r--r-- | include/crypto/aead.h | 148 | ||||
| -rw-r--r-- | include/crypto/internal/aead.h | 42 | ||||
| -rw-r--r-- | include/crypto/internal/geniv.h | 2 | ||||
| -rw-r--r-- | include/linux/crypto.h | 48 |
5 files changed, 28 insertions, 818 deletions
diff --git a/crypto/aead.c b/crypto/aead.c index a4dcd19dcca6..c40df2c4d420 100644 --- a/crypto/aead.c +++ b/crypto/aead.c @@ -3,7 +3,7 @@ * * This file provides API support for AEAD algorithms. * - * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> + * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -21,7 +21,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/rtnetlink.h> -#include <linux/sched.h> #include <linux/slab.h> #include <linux/seq_file.h> #include <linux/cryptouser.h> @@ -29,17 +28,6 @@ #include "internal.h" -struct compat_request_ctx { - struct scatterlist src[2]; - struct scatterlist dst[2]; - struct scatterlist ivbuf[2]; - struct scatterlist *ivsg; - struct aead_givcrypt_request subreq; -}; - -static int aead_null_givencrypt(struct aead_givcrypt_request *req); -static int aead_null_givdecrypt(struct aead_givcrypt_request *req); - static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key, unsigned int keylen) { @@ -55,7 +43,7 @@ static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key, alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); memcpy(alignbuffer, key, keylen); - ret = tfm->setkey(tfm, alignbuffer, keylen); + ret = crypto_aead_alg(tfm)->setkey(tfm, alignbuffer, keylen); memset(alignbuffer, 0, keylen); kfree(buffer); return ret; @@ -66,12 +54,10 @@ int crypto_aead_setkey(struct crypto_aead *tfm, { unsigned long alignmask = crypto_aead_alignmask(tfm); - tfm = tfm->child; - if ((unsigned long)key & alignmask) return setkey_unaligned(tfm, key, keylen); - return tfm->setkey(tfm, key, keylen); + return crypto_aead_alg(tfm)->setkey(tfm, key, keylen); } EXPORT_SYMBOL_GPL(crypto_aead_setkey); @@ -82,100 +68,17 @@ int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize) if (authsize > crypto_aead_maxauthsize(tfm)) return -EINVAL; - if (tfm->setauthsize) { - err = tfm->setauthsize(tfm->child, authsize); + if (crypto_aead_alg(tfm)->setauthsize) { + err = crypto_aead_alg(tfm)->setauthsize(tfm, authsize); if (err) return err; } - tfm->child->authsize = authsize; tfm->authsize = authsize; return 0; } EXPORT_SYMBOL_GPL(crypto_aead_setauthsize); -struct aead_old_request { - struct scatterlist srcbuf[2]; - struct scatterlist dstbuf[2]; - struct aead_request subreq; -}; - -unsigned int crypto_aead_reqsize(struct crypto_aead *tfm) -{ - return tfm->reqsize + sizeof(struct aead_old_request); -} -EXPORT_SYMBOL_GPL(crypto_aead_reqsize); - -static int old_crypt(struct aead_request *req, - int (*crypt)(struct aead_request *req)) -{ - struct aead_old_request *nreq = aead_request_ctx(req); - struct crypto_aead *aead = crypto_aead_reqtfm(req); - struct scatterlist *src, *dst; - - if (req->old) - return crypt(req); - - src = scatterwalk_ffwd(nreq->srcbuf, req->src, req->assoclen); - dst = req->src == req->dst ? - src : scatterwalk_ffwd(nreq->dstbuf, req->dst, req->assoclen); - - aead_request_set_tfm(&nreq->subreq, aead); - aead_request_set_callback(&nreq->subreq, aead_request_flags(req), - req->base.complete, req->base.data); - aead_request_set_crypt(&nreq->subreq, src, dst, req->cryptlen, - req->iv); - aead_request_set_assoc(&nreq->subreq, req->src, req->assoclen); - - return crypt(&nreq->subreq); -} - -static int old_encrypt(struct aead_request *req) -{ - struct crypto_aead *aead = crypto_aead_reqtfm(req); - struct old_aead_alg *alg = crypto_old_aead_alg(aead); - - return old_crypt(req, alg->encrypt); -} - -static int old_decrypt(struct aead_request *req) -{ - struct crypto_aead *aead = crypto_aead_reqtfm(req); - struct old_aead_alg *alg = crypto_old_aead_alg(aead); - - return old_crypt(req, alg->decrypt); -} - -static int no_givcrypt(struct aead_givcrypt_request *req) -{ - return -ENOSYS; -} - -static int crypto_old_aead_init_tfm(struct crypto_tfm *tfm) -{ - struct old_aead_alg *alg = &tfm->__crt_alg->cra_aead; - struct crypto_aead *crt = __crypto_aead_cast(tfm); - - if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8) - return -EINVAL; - - crt->setkey = alg->setkey; - crt->setauthsize = alg->setauthsize; - crt->encrypt = old_encrypt; - crt->decrypt = old_decrypt; - if (alg->ivsize) { - crt->givencrypt = alg->givencrypt ?: no_givcrypt; - crt->givdecrypt = alg->givdecrypt ?: no_givcrypt; - } else { - crt->givencrypt = aead_null_givencrypt; - crt->givdecrypt = aead_null_givdecrypt; - } - crt->child = __crypto_aead_cast(tfm); - crt->authsize = alg->maxauthsize; - - return 0; -} - static void crypto_aead_exit_tfm(struct crypto_tfm *tfm) { struct crypto_aead *aead = __crypto_aead_cast(tfm); @@ -189,14 +92,6 @@ static int crypto_aead_init_tfm(struct crypto_tfm *tfm) struct crypto_aead *aead = __crypto_aead_cast(tfm); struct aead_alg *alg = crypto_aead_alg(aead); - if (crypto_old_aead_alg(aead)->encrypt) - return crypto_old_aead_init_tfm(tfm); - - aead->setkey = alg->setkey; - aead->setauthsize = alg->setauthsize; - aead->encrypt = alg->encrypt; - aead->decrypt = alg->decrypt; - aead->child = __crypto_aead_cast(tfm); aead->authsize = alg->maxauthsize; if (alg->exit) @@ -209,64 +104,6 @@ static int crypto_aead_init_tfm(struct crypto_tfm *tfm) } #ifdef CONFIG_NET -static int crypto_old_aead_report(struct sk_buff *skb, struct crypto_alg *alg) -{ - struct crypto_report_aead raead; - struct old_aead_alg *aead = &alg->cra_aead; - - strncpy(raead.type, "aead", sizeof(raead.type)); - strncpy(raead.geniv, aead->geniv ?: "<built-in>", sizeof(raead.geniv)); - - raead.blocksize = alg->cra_blocksize; - raead.maxauthsize = aead->maxauthsize; - raead.ivsize = aead->ivsize; - - if (nla_put(skb, CRYPTOCFGA_REPORT_AEAD, - sizeof(struct crypto_report_aead), &raead)) - goto nla_put_failure; - return 0; - -nla_put_failure: - return -EMSGSIZE; -} -#else -static int crypto_old_aead_report(struct sk_buff *skb, struct crypto_alg *alg) -{ - return -ENOSYS; -} -#endif - -static void crypto_old_aead_show(struct seq_file *m, struct crypto_alg *alg) - __attribute__ ((unused)); -static void crypto_old_aead_show(struct seq_file *m, struct crypto_alg *alg) -{ - struct old_aead_alg *aead = &alg->cra_aead; - - seq_printf(m, "type : aead\n"); - seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ? - "yes" : "no"); - seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); - seq_printf(m, "ivsize : %u\n", aead->ivsize); - seq_printf(m, "maxauthsize : %u\n", aead->maxauthsize); - seq_printf(m, "geniv : %s\n", aead->geniv ?: "<built-in>"); -} - -const struct crypto_type crypto_aead_type = { - .extsize = crypto_alg_extsize, - .init_tfm = crypto_aead_init_tfm, -#ifdef CONFIG_PROC_FS - .show = crypto_old_aead_show, -#endif - .report = crypto_old_aead_report, - .lookup = crypto_lookup_aead, - .maskclear = ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV), - .maskset = CRYPTO_ALG_TYPE_MASK, - .type = CRYPTO_ALG_TYPE_AEAD, - .tfmsize = offsetof(struct crypto_aead, base), -}; -EXPORT_SYMBOL_GPL(crypto_aead_type); - -#ifdef CONFIG_NET static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg) { struct crypto_report_aead raead; @@ -321,7 +158,7 @@ static void crypto_aead_free_instance(struct crypto_instance *inst) aead->free(aead); } -static const struct crypto_type crypto_new_aead_type = { +static const struct crypto_type crypto_aead_type = { .extsize = crypto_alg_extsize, .init_tfm = crypto_aead_init_tfm, .free = crypto_aead_free_instance, @@ -335,81 +172,6 @@ static const struct crypto_type crypto_new_aead_type = { .tfmsize = offsetof(struct crypto_aead, base), }; -static int aead_null_givencrypt(struct aead_givcrypt_request *req) -{ - return crypto_aead_encrypt(&req->areq); -} - -static int aead_null_givdecrypt(struct aead_givcrypt_request *req) -{ - return crypto_aead_decrypt(&req->areq); -} - -#ifdef CONFIG_NET -static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg) -{ - struct crypto_report_aead raead; - struct old_aead_alg *aead = &alg->cra_aead; - - strncpy(raead.type, "nivaead", sizeof(raead.type)); - strncpy(raead.geniv, aead->geniv, sizeof(raead.geniv)); - - raead.blocksize = alg->cra_blocksize; - raead.maxauthsize = aead->maxauthsize; - raead.ivsize = aead->ivsize; - - if (nla_put(skb, CRYPTOCFGA_REPORT_AEAD, - sizeof(struct crypto_report_aead), &raead)) - goto nla_put_failure; - return 0; - -nla_put_failure: - return -EMSGSIZE; -} -#else -static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg) -{ - return -ENOSYS; -} -#endif - - -static void crypto_nivaead_show(struct seq_file *m, struct crypto_alg *alg) - __attribute__ ((unused)); -static void crypto_nivaead_show(struct seq_file *m, struct crypto_alg *alg) -{ - struct old_aead_alg *aead = &alg->cra_aead; - - seq_printf(m, "type : nivaead\n"); - seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ? - "yes" : "no"); - seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); - seq_printf(m, "ivsize : %u\n", aead->ivsize); - seq_printf(m, "maxauthsize : %u\n", aead->maxauthsize); - seq_printf(m, "geniv : %s\n", aead->geniv); -} - -const struct crypto_type crypto_nivaead_type = { - .extsize = crypto_alg_extsize, - .init_tfm = crypto_aead_init_tfm, -#ifdef CONFIG_PROC_FS - .show = crypto_nivaead_show, -#endif - .report = crypto_nivaead_report, - .maskclear = ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV), - .maskset = CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV, - .type = CRYPTO_ALG_TYPE_AEAD, - .tfmsize = offsetof(struct crypto_aead, base), -}; -EXPORT_SYMBOL_GPL(crypto_nivaead_type); - -static int crypto_grab_nivaead(struct crypto_aead_spawn *spawn, - const char *name, u32 type, u32 mask) -{ - spawn->base.frontend = &crypto_nivaead_type; - return crypto_grab_spawn(&spawn->base, name, type, mask); -} - static int aead_geniv_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen) { @@ -426,169 +188,6 @@ static int aead_geniv_setauthsize(struct crypto_aead *tfm, return crypto_aead_setauthsize(ctx->child, authsize); } -static void compat_encrypt_complete2(struct aead_request *req, int err) -{ - struct compat_request_ctx *rctx = aead_request_ctx(req); - struct aead_givcrypt_request *subreq = &rctx->subreq; - struct crypto_aead *geniv; - - if (err == -EINPROGRESS) - return; - - if (err) - goto out; - - geniv = crypto_aead_reqtfm(req); - scatterwalk_map_and_copy(subreq->giv, rctx->ivsg, 0, - crypto_aead_ivsize(geniv), 1); - -out: - kzfree(subreq->giv); -} - -static void compat_encrypt_complete(struct crypto_async_request *base, int err) -{ - struct aead_request *req = base->data; - - compat_encrypt_complete2(req, err); - aead_request_complete(req, err); -} - -static int compat_encrypt(struct aead_request *req) -{ - struct crypto_aead *geniv = crypto_aead_reqtfm(req); - struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); - struct compat_request_ctx *rctx = aead_request_ctx(req); - struct aead_givcrypt_request *subreq = &rctx->subreq; - unsigned int ivsize = crypto_aead_ivsize(geniv); - struct scatterlist *src, *dst; - crypto_completion_t compl; - void *data; - u8 *info; - __be64 seq; - int err; - - if (req->cryptlen < ivsize) - return -EINVAL; - - compl = req->base.complete; - data = req->base.data; - - rctx->ivsg = scatterwalk_ffwd(rctx->ivbuf, req->dst, req->assoclen); - info = PageHighMem(sg_page(rctx->ivsg)) ? NULL : sg_virt(rctx->ivsg); - - if (!info) { - info = kmalloc(ivsize, req->base.flags & - CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL: - GFP_ATOMIC); - if (!info) - return -ENOMEM; - - compl = compat_encrypt_complete; - data = req; - } - - memcpy(&seq, req->iv + ivsize - sizeof(seq), sizeof(seq)); - - src = scatterwalk_ffwd(rctx->src, req->src, req->assoclen + ivsize); - dst = req->src == req->dst ? - src : scatterwalk_ffwd(rctx->dst, rctx->ivsg, ivsize); - - aead_givcrypt_set_tfm(subreq, ctx->child); - aead_givcrypt_set_callback(subreq, req->base.flags, - req->base.complete, req->base.data); - aead_givcrypt_set_crypt(subreq, src, dst, - req->cryptlen - ivsize, req->iv); - aead_givcrypt_set_assoc(subreq, req->src, req->assoclen); - aead_givcrypt_set_giv(subreq, info, be64_to_cpu(seq)); - - err = crypto_aead_givencrypt(subreq); - if (unlikely(PageHighMem(sg_page(rctx->ivsg)))) - compat_encrypt_complete2(req, err); - return err; -} - -static int compat_decrypt(struct aead_request *req) -{ - struct crypto_aead *geniv = crypto_aead_reqtfm(req); - struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); - struct compat_request_ctx *rctx = aead_request_ctx(req); - struct aead_request *subreq = &rctx->subreq.areq; - unsigned int ivsize = crypto_aead_ivsize(geniv); - struct scatterlist *src, *dst; - crypto_completion_t compl; - void *data; - - if (req->cryptlen < ivsize) - return -EINVAL; - - aead_request_set_tfm(subreq, ctx->child); - - compl = req->base.complete; - data = req->base.data; - - src = scatterwalk_ffwd(rctx->src, req->src, req->assoclen + ivsize); - dst = req->src == req->dst ? - src : scatterwalk_ffwd(rctx->dst, req->dst, - req->assoclen + ivsize); - - aead_request_set_callback(subreq, req->base.flags, compl, data); - aead_request_set_crypt(subreq, src, dst, - req->cryptlen - ivsize, req->iv); - aead_request_set_assoc(subreq, req->src, req->assoclen); - - scatterwalk_map_and_copy(req->iv, req->src, req->assoclen, ivsize, 0); - - return crypto_aead_decrypt(subreq); -} - -static int compat_encrypt_first(struct aead_request *req) -{ - struct crypto_aead *geniv = crypto_aead_reqtfm(req); - struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); - int err = 0; - - spin_lock_bh(&ctx->lock); - if (geniv->encrypt != compat_encrypt_first) - goto unlock; - - geniv->encrypt = compat_encrypt; - -unlock: - spin_unlock_bh(&ctx->lock); - - if (err) - return err; - - return compat_encrypt(req); -} - -static int aead_geniv_init_compat(struct crypto_tfm *tfm) -{ - struct crypto_aead *geniv = __crypto_aead_cast(tfm); - struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); - int err; - - spin_lock_init(&ctx->lock); - - crypto_aead_set_reqsize(geniv, sizeof(struct compat_request_ctx)); - - err = aead_geniv_init(tfm); - - ctx->child = geniv->child; - geniv->child = geniv; - - return err; -} - -static void aead_geniv_exit_compat(struct crypto_tfm *tfm) -{ - struct crypto_aead *geniv = __crypto_aead_cast(tfm); - struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); - - crypto_free_aead(ctx->child); -} - struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, struct rtattr **tb, u32 type, u32 mask) { @@ -605,7 +204,7 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, if (IS_ERR(algt)) return ERR_CAST(algt); - if ((algt->type ^ (CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_GENIV)) & + if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask & ~CRYPTO_ALG_AEAD_NEW) return ERR_PTR(-EINVAL); @@ -623,9 +222,7 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, mask |= crypto_requires_sync(algt->type, algt->mask); crypto_set_aead_spawn(spawn, aead_crypto_instance(inst)); - err = (algt->mask & CRYPTO_ALG_GENIV) ? - crypto_grab_nivaead(spawn, name, type, mask) : - crypto_grab_aead(spawn, name, type, mask); + err = crypto_grab_aead(spawn, name, type, mask); if (err) goto err_free_inst; @@ -638,43 +235,6 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, if (ivsize < sizeof(u64)) goto err_drop_alg; - /* - * This is only true if we're constructing an algorithm with its - * default IV generator. For the default generator we elide the - * template name and double-check the IV generator. - */ - if (algt->mask & CRYPTO_ALG_GENIV) { - if (!alg->base.cra_aead.encrypt) - goto err_drop_alg; - if (strcmp(tmpl->name, alg->base.cra_aead.geniv)) - goto err_drop_alg; - - memcpy(inst->alg.base.cra_name, alg->base.cra_name, - CRYPTO_MAX_ALG_NAME); - memcpy(inst->alg.base.cra_driver_name, - alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME); - - inst->alg.base.cra_flags = CRYPTO_ALG_TYPE_AEAD | - CRYPTO_ALG_GENIV; - 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 = alg->base.cra_blocksize; - inst->alg.base.cra_alignmask = alg->base.cra_alignmask; - inst->alg.base.cra_type = &crypto_aead_type; - - inst->alg.base.cra_aead.ivsize = ivsize; - inst->alg.base.cra_aead.maxauthsize = maxauthsize; - - inst->alg.base.cra_aead.setkey = alg->base.cra_aead.setkey; - inst->alg.base.cra_aead.setauthsize = - alg->base.cra_aead.setauthsize; - inst->alg.base.cra_aead.encrypt = alg->base.cra_aead.encrypt; - inst->alg.base.cra_aead.decrypt = alg->base.cra_aead.decrypt; - - goto out; - } - err = -ENAMETOOLONG; if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", tmpl->name, alg->base.cra_name) >= @@ -698,12 +258,6 @@ struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, inst->alg.ivsize = ivsize; inst->alg.maxauthsize = maxauthsize; - inst->alg.encrypt = compat_encrypt_first; - inst->alg.decrypt = compat_decrypt; - - inst->alg.base.cra_init = aead_geniv_init_compat; - inst->alg.base.cra_exit = aead_geniv_exit_compat; - out: return inst; @@ -723,31 +277,6 @@ void aead_geniv_free(struct aead_instance *inst) } EXPORT_SYMBOL_GPL(aead_geniv_free); -int aead_geniv_init(struct crypto_tfm *tfm) -{ - struct crypto_instance *inst = (void *)tfm->__crt_alg; - struct crypto_aead *child; - struct crypto_aead *aead; - - aead = __crypto_aead_cast(tfm); - - child = crypto_spawn_aead(crypto_instance_ctx(inst)); - if (IS_ERR(child)) - return PTR_ERR(child); - - aead->child = child; - aead->reqsize += crypto_aead_reqsize(child); - - return 0; -} -EXPORT_SYMBOL_GPL(aead_geniv_init); - -void aead_geniv_exit(struct crypto_tfm *tfm) -{ - crypto_free_aead(__crypto_aead_cast(tfm)->child); -} -EXPORT_SYMBOL_GPL(aead_geniv_exit); - int aead_init_geniv(struct crypto_aead *aead) { struct aead_geniv_ctx *ctx = crypto_aead_ctx(aead); @@ -801,123 +330,6 @@ void aead_exit_geniv(struct crypto_aead *tfm) } EXPORT_SYMBOL_GPL(aead_exit_geniv); -static int crypto_nivaead_default(struct crypto_alg *alg, u32 type, u32 mask) -{ - struct rtattr *tb[3]; - struct { - struct rtattr attr; - struct crypto_attr_type data; - } ptype; - struct { - struct rtattr attr; - struct crypto_attr_alg data; - } palg; - struct crypto_template *tmpl; - struct crypto_instance *inst; - struct crypto_alg *larval; - const char *geniv; - int err; - - larval = crypto_larval_lookup(alg->cra_driver_name, - CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_GENIV, - CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); - err = PTR_ERR(larval); - if (IS_ERR(larval)) - goto out; - - err = -EAGAIN; - if (!crypto_is_larval(larval)) - goto drop_larval; - - ptype.attr.rta_len = sizeof(ptype); - ptype.attr.rta_type = CRYPTOA_TYPE; - ptype.data.type = type | CRYPTO_ALG_GENIV; - /* GENIV tells the template that we're making a default geniv. */ - ptype.data.mask = mask | CRYPTO_ALG_GENIV; - tb[0] = &ptype.attr; - - palg.attr.rta_len = sizeof(palg); - palg.attr.rta_type = CRYPTOA_ALG; - /* Must use the exact name to locate ourselves. */ - memcpy(palg.data.name, alg->cra_driver_name, CRYPTO_MAX_ALG_NAME); - tb[1] = &palg.attr; - - tb[2] = NULL; - - geniv = alg->cra_aead.geniv; - - tmpl = crypto_lookup_template(geniv); - err = -ENOENT; - if (!tmpl) - goto kill_larval; - - if (tmpl->create) { - err = tmpl->create(tmpl, tb); - if (err) - goto put_tmpl; - goto ok; - } - - inst = tmpl->alloc(tb); - err = PTR_ERR(inst); - if (IS_ERR(inst)) - goto put_tmpl; - - err = crypto_register_instance(tmpl, inst); - if (err) { - tmpl->free(inst); - goto put_tmpl; - } - -ok: - /* Redo the lookup to use the instance we just registered. */ - err = -EAGAIN; - -put_tmpl: - crypto_tmpl_put(tmpl); -kill_larval: - crypto_larval_kill(larval); -drop_larval: - crypto_mod_put(larval); -out: - crypto_mod_put(alg); - return err; -} - -struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask) -{ - struct crypto_alg *alg; - - alg = crypto_alg_mod_lookup(name, type, mask); - if (IS_ERR(alg)) - return alg; - - if (alg->cra_type == &crypto_aead_type) - return alg; - - if (!alg->cra_aead.ivsize) - return alg; - - crypto_mod_put(alg); - alg = crypto_alg_mod_lookup(name, type | CRYPTO_ALG_TESTED, - mask & ~CRYPTO_ALG_TESTED); - if (IS_ERR(alg)) - return alg; - - if (alg->cra_type == &crypto_aead_type) { - if (~alg->cra_flags & (type ^ ~mask) & CRYPTO_ALG_TESTED) { - crypto_mod_put(alg); - alg = ERR_PTR(-ENOENT); - } - return alg; - } - - BUG_ON(!alg->cra_aead.ivsize); - - return ERR_PTR(crypto_nivaead_default(alg, type, mask)); -} -EXPORT_SYMBOL_GPL(crypto_lookup_aead); - int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name, u32 type, u32 mask) { @@ -939,7 +351,7 @@ static int aead_prepare_alg(struct aead_alg *alg) if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8) return -EINVAL; - base->cra_type = &crypto_new_aead_type; + base->cra_type = &crypto_aead_type; base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK; base->cra_flags |= CRYPTO_ALG_TYPE_AEAD; diff --git a/include/crypto/aead.h b/include/crypto/aead.h index 14e35364cdfa..077cae1e6b51 100644 --- a/include/crypto/aead.h +++ b/include/crypto/aead.h @@ -1,7 +1,7 @@ /* * AEAD: Authenticated Encryption with Associated Data * - * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> + * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -71,14 +71,14 @@ * in the first scatter gather list entry pointing to a NULL buffer. */ +struct crypto_aead; + /** * struct aead_request - AEAD request * @base: Common attributes for async crypto requests - * @old: Boolean whether the old or new AEAD API is used * @assoclen: Length in bytes of associated data for authentication * @cryptlen: Length of data to be encrypted or decrypted * @iv: Initialisation vector - * @assoc: Associated data * @src: Source data * @dst: Destination data * @__ctx: Start of private context data @@ -86,14 +86,11 @@ struct aead_request { struct crypto_async_request base; - bool old; - unsigned int assoclen; unsigned int cryptlen; u8 *iv; - struct scatterlist *assoc; struct scatterlist *src; struct scatterlist *dst; @@ -101,19 +98,6 @@ struct aead_request { }; /** - * struct aead_givcrypt_request - AEAD request with IV generation - * @seq: Sequence number for IV generation - * @giv: Space for generated IV - * @areq: The AEAD request itself - */ -struct aead_givcrypt_request { - u64 seq; - u8 *giv; - - struct aead_request areq; -}; - -/** * struct aead_alg - AEAD cipher definition * @maxauthsize: Set the maximum authentication tag size supported by the * transformation. A transformation may support smaller tag sizes. @@ -165,16 +149,6 @@ struct aead_alg { }; struct crypto_aead { - int (*setkey)(struct crypto_aead *tfm, const u8 *key, - unsigned int keylen); - int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize); - int (*encrypt)(struct aead_request *req); - int (*decrypt)(struct aead_request *req); - int (*givencrypt)(struct aead_givcrypt_request *req); - int (*givdecrypt)(struct aead_givcrypt_request *req); - - struct crypto_aead *child; - unsigned int authsize; unsigned int reqsize; @@ -216,16 +190,6 @@ static inline void crypto_free_aead(struct crypto_aead *tfm) crypto_destroy_tfm(tfm, crypto_aead_tfm(tfm)); } -static inline struct crypto_aead *crypto_aead_crt(struct crypto_aead *tfm) -{ - return tfm; -} - -static inline struct old_aead_alg *crypto_old_aead_alg(struct crypto_aead *tfm) -{ - return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead; -} - static inline struct aead_alg *crypto_aead_alg(struct crypto_aead *tfm) { return container_of(crypto_aead_tfm(tfm)->__crt_alg, @@ -234,8 +198,7 @@ static inline struct aead_alg *crypto_aead_alg(struct crypto_aead *tfm) static inline unsigned int crypto_aead_alg_ivsize(struct aead_alg *alg) { - return alg->base.cra_aead.encrypt ? alg->base.cra_aead.ivsize : - alg->ivsize; + return alg->ivsize; } /** @@ -361,7 +324,7 @@ static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req) */ static inline int crypto_aead_encrypt(struct aead_request *req) { - return crypto_aead_reqtfm(req)->encrypt(req); + return crypto_aead_alg(crypto_aead_reqtfm(req))->encrypt(req); } /** @@ -388,10 +351,12 @@ static inline int crypto_aead_encrypt(struct aead_request *req) */ static inline int crypto_aead_decrypt(struct aead_request *req) { - if (req->cryptlen < crypto_aead_authsize(crypto_aead_reqtfm(req))) + struct crypto_aead *aead = crypto_aead_reqtfm(req); + + if (req->cryptlen < crypto_aead_authsize(aead)) return -EINVAL; - return crypto_aead_reqtfm(req)->decrypt(req); + return crypto_aead_alg(aead)->decrypt(req); } /** @@ -411,7 +376,10 @@ static inline int crypto_aead_decrypt(struct aead_request *req) * * Return: number of bytes */ -unsigned int crypto_aead_reqsize(struct crypto_aead *tfm); +static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm) +{ + return tfm->reqsize; +} /** * aead_request_set_tfm() - update cipher handle reference in request @@ -424,7 +392,7 @@ unsigned int crypto_aead_reqsize(struct crypto_aead *tfm); static inline void aead_request_set_tfm(struct aead_request *req, struct crypto_aead *tfm) { - req->base.tfm = crypto_aead_tfm(tfm->child); + req->base.tfm = crypto_aead_tfm(tfm); } /** @@ -550,23 +518,6 @@ static inline void aead_request_set_crypt(struct aead_request *req, } /** - * aead_request_set_assoc() - set the associated data scatter / gather list - * @req: request handle - * @assoc: associated data scatter / gather list - * @assoclen: number of bytes to process from @assoc - * - * Obsolete, do not use. - */ -static inline void aead_request_set_assoc(struct aead_request *req, - struct scatterlist *assoc, - unsigned int assoclen) -{ - req->assoc = assoc; - req->assoclen = assoclen; - req->old = true; -} - -/** * aead_request_set_ad - set associated data information * @req: request handle * @assoclen: number of bytes in associated data @@ -578,77 +529,6 @@ static inline void aead_request_set_ad(struct aead_request *req, unsigned int assoclen) { req->assoclen = assoclen; - req->old = false; -} - -static inline struct crypto_aead *aead_givcrypt_reqtfm( - struct aead_givcrypt_request *req) -{ - return crypto_aead_reqtfm(&req->areq); -} - -static inline int crypto_aead_givencrypt(struct aead_givcrypt_request *req) -{ - return aead_givcrypt_reqtfm(req)->givencrypt(req); -}; - -static inline int crypto_aead_givdecrypt(struct aead_givcrypt_request *req) -{ - return aead_givcrypt_reqtfm(req)->givdecrypt(req); -}; - -static inline void aead_givcrypt_set_tfm(struct aead_givcrypt_request *req, - struct crypto_aead *tfm) -{ - req->areq.base.tfm = crypto_aead_tfm(tfm); -} - -static inline struct aead_givcrypt_request *aead_givcrypt_alloc( - struct crypto_aead *tfm, gfp_t gfp) -{ - struct aead_givcrypt_request *req; - - req = kmalloc(sizeof(struct aead_givcrypt_request) + - crypto_aead_reqsize(tfm), gfp); - - if (likely(req)) - aead_givcrypt_set_tfm(req, tfm); - - return req; -} - -static inline void aead_givcrypt_free(struct aead_givcrypt_request *req) -{ - kfree(req); -} - -static inline void aead_givcrypt_set_callback( - struct aead_givcrypt_request *req, u32 flags, - crypto_completion_t compl, void *data) -{ - aead_request_set_callback(&req->areq, flags, compl, data); -} - -static inline void aead_givcrypt_set_crypt(struct aead_givcrypt_request *req, - struct scatterlist *src, - struct scatterlist *dst, - unsigned int nbytes, void *iv) -{ - aead_request_set_crypt(&req->areq, src, dst, nbytes, iv); -} - -static inline void aead_givcrypt_set_assoc(struct aead_givcrypt_request *req, - struct scatterlist *assoc, - unsigned int assoclen) -{ - aead_request_set_assoc(&req->areq, assoc, assoclen); -} - -static inline void aead_givcrypt_set_giv(struct aead_givcrypt_request *req, - u8 *giv, u64 seq) -{ - req->giv = giv; - req->seq = seq; } #endif /* _CRYPTO_AEAD_H */ diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h index 49f3179b8a17..5554cdd8d6c1 100644 --- a/include/crypto/internal/aead.h +++ b/include/crypto/internal/aead.h @@ -1,7 +1,7 @@ /* * AEAD: Authenticated Encryption with Associated Data * - * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> + * Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -39,20 +39,11 @@ struct aead_queue { struct crypto_queue base; }; -extern const struct crypto_type crypto_aead_type; -extern const struct crypto_type crypto_nivaead_type; - static inline void *crypto_aead_ctx(struct crypto_aead *tfm) { return crypto_tfm_ctx(&tfm->base); } -static inline struct crypto_instance *crypto_aead_alg_instance( - struct crypto_aead *aead) -{ - return crypto_tfm_alg_instance(&aead->base); -} - static inline struct crypto_instance *aead_crypto_instance( struct aead_instance *inst) { @@ -66,7 +57,7 @@ static inline struct aead_instance *aead_instance(struct crypto_instance *inst) static inline struct aead_instance *aead_alg_instance(struct crypto_aead *aead) { - return aead_instance(crypto_aead_alg_instance(aead)); + return aead_instance(crypto_tfm_alg_instance(&aead->base)); } static inline void *aead_instance_ctx(struct aead_instance *inst) @@ -95,8 +86,6 @@ static inline void crypto_set_aead_spawn( crypto_set_spawn(&spawn->base, inst); } -struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask); - int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name, u32 type, u32 mask); @@ -105,12 +94,6 @@ static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn) crypto_drop_spawn(&spawn->base); } -static inline struct crypto_alg *crypto_aead_spawn_alg( - struct crypto_aead_spawn *spawn) -{ - return spawn->base.alg; -} - static inline struct aead_alg *crypto_spawn_aead_alg( struct crypto_aead_spawn *spawn) { @@ -123,32 +106,15 @@ static inline struct crypto_aead *crypto_spawn_aead( return crypto_spawn_tfm2(&spawn->base); } -static inline struct crypto_aead *aead_geniv_base(struct crypto_aead *geniv) -{ - return geniv->child; -} - -static inline void *aead_givcrypt_reqctx(struct aead_givcrypt_request *req) -{ - return aead_request_ctx(&req->areq); -} - -static inline void aead_givcrypt_complete(struct aead_givcrypt_request *req, - int err) -{ - aead_request_complete(&req->areq, err); -} - static inline void crypto_aead_set_reqsize(struct crypto_aead *aead, unsigned int reqsize) { - crypto_aead_crt(aead)->reqsize = reqsize; + aead->reqsize = reqsize; } static inline unsigned int crypto_aead_alg_maxauthsize(struct aead_alg *alg) { - return alg->base.cra_aead.encrypt ? alg->base.cra_aead.maxauthsize : - alg->maxauthsize; + return alg->maxauthsize; } static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead) diff --git a/include/crypto/internal/geniv.h b/include/crypto/internal/geniv.h index b9c55bef7b6d..59333635e712 100644 --- a/include/crypto/internal/geniv.h +++ b/include/crypto/internal/geniv.h @@ -27,8 +27,6 @@ struct aead_geniv_ctx { struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, struct rtattr **tb, u32 type, u32 mask); void aead_geniv_free(struct aead_instance *inst); -int aead_geniv_init(struct crypto_tfm *tfm); -void aead_geniv_exit(struct crypto_tfm *tfm); int aead_init_geniv(struct crypto_aead *tfm); void aead_exit_geniv(struct crypto_aead *tfm); diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 81ef938b0a8e..7f4aee9e1f91 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -142,13 +142,10 @@ struct scatterlist; struct crypto_ablkcipher; struct crypto_async_request; -struct crypto_aead; struct crypto_blkcipher; struct crypto_hash; struct crypto_tfm; struct crypto_type; -struct aead_request; -struct aead_givcrypt_request; struct skcipher_givcrypt_request; typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err); @@ -275,47 +272,6 @@ struct ablkcipher_alg { }; /** - * struct old_aead_alg - AEAD cipher definition - * @maxauthsize: Set the maximum authentication tag size supported by the - * transformation. A transformation may support smaller tag sizes. - * As the authentication tag is a message digest to ensure the - * integrity of the encrypted data, a consumer typically wants the - * largest authentication tag possible as defined by this - * variable. - * @setauthsize: Set authentication size for the AEAD transformation. This - * function is used to specify the consumer requested size of the - * authentication tag to be either generated by the transformation - * during encryption or the size of the authentication tag to be - * supplied during the decryption operation. This function is also - * responsible for checking the authentication tag size for - * validity. - * @setkey: see struct ablkcipher_alg - * @encrypt: see struct ablkcipher_alg - * @decrypt: see struct ablkcipher_alg - * @givencrypt: see struct ablkcipher_alg - * @givdecrypt: see struct ablkcipher_alg - * @geniv: see struct ablkcipher_alg - * @ivsize: see struct ablkcipher_alg - * - * All fields except @givencrypt , @givdecrypt , @geniv and @ivsize are - * mandatory and must be filled. - */ -struct old_aead_alg { - int (*setkey)(struct crypto_aead *tfm, const u8 *key, - unsigned int keylen); - int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize); - int (*encrypt)(struct aead_request *req); - int (*decrypt)(struct aead_request *req); - int (*givencrypt)(struct aead_givcrypt_request *req); - int (*givdecrypt)(struct aead_givcrypt_request *req); - - const char *geniv; - - unsigned int ivsize; - unsigned int maxauthsize; -}; - -/** * struct blkcipher_alg - synchronous block cipher definition * @min_keysize: see struct ablkcipher_alg * @max_keysize: see struct ablkcipher_alg @@ -409,7 +365,6 @@ struct compress_alg { #define cra_ablkcipher cra_u.ablkcipher -#define cra_aead cra_u.aead #define cra_blkcipher cra_u.blkcipher #define cra_cipher cra_u.cipher #define cra_compress cra_u.compress @@ -460,7 +415,7 @@ struct compress_alg { * struct crypto_type, which implements callbacks common for all * transformation types. There are multiple options: * &crypto_blkcipher_type, &crypto_ablkcipher_type, - * &crypto_ahash_type, &crypto_aead_type, &crypto_rng_type. + * &crypto_ahash_type, &crypto_rng_type. * This field might be empty. In that case, there are no common * callbacks. This is the case for: cipher, compress, shash. * @cra_u: Callbacks implementing the transformation. This is a union of @@ -508,7 +463,6 @@ struct crypto_alg { union { struct ablkcipher_alg ablkcipher; - struct old_aead_alg aead; struct blkcipher_alg blkcipher; struct cipher_alg cipher; struct compress_alg compress; |