diff options
Diffstat (limited to 'crypto/aead.c')
| -rw-r--r-- | crypto/aead.c | 537 |
1 files changed, 196 insertions, 341 deletions
diff --git a/crypto/aead.c b/crypto/aead.c index 222271070b49..9b18a1e40d6a 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 @@ -12,13 +12,15 @@ * */ -#include <crypto/internal/aead.h> +#include <crypto/internal/geniv.h> +#include <crypto/internal/rng.h> +#include <crypto/null.h> +#include <crypto/scatterwalk.h> #include <linux/err.h> #include <linux/init.h> #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> @@ -29,7 +31,6 @@ static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key, unsigned int keylen) { - struct aead_alg *aead = crypto_aead_alg(tfm); unsigned long alignmask = crypto_aead_alignmask(tfm); int ret; u8 *buffer, *alignbuffer; @@ -42,71 +43,62 @@ static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key, alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); memcpy(alignbuffer, key, keylen); - ret = aead->setkey(tfm, alignbuffer, keylen); + ret = crypto_aead_alg(tfm)->setkey(tfm, alignbuffer, keylen); memset(alignbuffer, 0, keylen); kfree(buffer); return ret; } -static int setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen) +int crypto_aead_setkey(struct crypto_aead *tfm, + const u8 *key, unsigned int keylen) { - struct aead_alg *aead = crypto_aead_alg(tfm); unsigned long alignmask = crypto_aead_alignmask(tfm); if ((unsigned long)key & alignmask) return setkey_unaligned(tfm, key, keylen); - return aead->setkey(tfm, key, keylen); + return crypto_aead_alg(tfm)->setkey(tfm, key, keylen); } +EXPORT_SYMBOL_GPL(crypto_aead_setkey); int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize) { - struct aead_tfm *crt = crypto_aead_crt(tfm); int err; - if (authsize > crypto_aead_alg(tfm)->maxauthsize) + if (authsize > crypto_aead_maxauthsize(tfm)) return -EINVAL; if (crypto_aead_alg(tfm)->setauthsize) { - err = crypto_aead_alg(tfm)->setauthsize(crt->base, authsize); + err = crypto_aead_alg(tfm)->setauthsize(tfm, authsize); if (err) return err; } - crypto_aead_crt(crt->base)->authsize = authsize; - crt->authsize = authsize; + tfm->authsize = authsize; return 0; } EXPORT_SYMBOL_GPL(crypto_aead_setauthsize); -static unsigned int crypto_aead_ctxsize(struct crypto_alg *alg, u32 type, - u32 mask) +static void crypto_aead_exit_tfm(struct crypto_tfm *tfm) { - return alg->cra_ctxsize; -} + struct crypto_aead *aead = __crypto_aead_cast(tfm); + struct aead_alg *alg = crypto_aead_alg(aead); -static int no_givcrypt(struct aead_givcrypt_request *req) -{ - return -ENOSYS; + alg->exit(aead); } -static int crypto_init_aead_ops(struct crypto_tfm *tfm, u32 type, u32 mask) +static int crypto_aead_init_tfm(struct crypto_tfm *tfm) { - struct aead_alg *alg = &tfm->__crt_alg->cra_aead; - struct aead_tfm *crt = &tfm->crt_aead; + struct crypto_aead *aead = __crypto_aead_cast(tfm); + struct aead_alg *alg = crypto_aead_alg(aead); - if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8) - return -EINVAL; + aead->authsize = alg->maxauthsize; + + if (alg->exit) + aead->base.exit = crypto_aead_exit_tfm; - crt->setkey = tfm->__crt_alg->cra_flags & CRYPTO_ALG_GENIV ? - alg->setkey : setkey; - crt->encrypt = alg->encrypt; - crt->decrypt = alg->decrypt; - crt->givencrypt = alg->givencrypt ?: no_givcrypt; - crt->givdecrypt = alg->givdecrypt ?: no_givcrypt; - crt->base = __crypto_aead_cast(tfm); - crt->ivsize = alg->ivsize; - crt->authsize = alg->maxauthsize; + if (alg->init) + return alg->init(aead); return 0; } @@ -115,10 +107,10 @@ static int crypto_init_aead_ops(struct crypto_tfm *tfm, u32 type, u32 mask) static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg) { struct crypto_report_aead raead; - struct aead_alg *aead = &alg->cra_aead; + struct aead_alg *aead = container_of(alg, struct aead_alg, base); strncpy(raead.type, "aead", sizeof(raead.type)); - strncpy(raead.geniv, aead->geniv ?: "<built-in>", sizeof(raead.geniv)); + strncpy(raead.geniv, "<none>", sizeof(raead.geniv)); raead.blocksize = alg->cra_blocksize; raead.maxauthsize = aead->maxauthsize; @@ -143,7 +135,7 @@ static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg) __attribute__ ((unused)); static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg) { - struct aead_alg *aead = &alg->cra_aead; + struct aead_alg *aead = container_of(alg, struct aead_alg, base); seq_printf(m, "type : aead\n"); seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ? @@ -151,141 +143,68 @@ static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg) 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 = { - .ctxsize = crypto_aead_ctxsize, - .init = crypto_init_aead_ops, -#ifdef CONFIG_PROC_FS - .show = crypto_aead_show, -#endif - .report = crypto_aead_report, -}; -EXPORT_SYMBOL_GPL(crypto_aead_type); - -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); + seq_printf(m, "geniv : <none>\n"); } -static int crypto_init_nivaead_ops(struct crypto_tfm *tfm, u32 type, u32 mask) +static void crypto_aead_free_instance(struct crypto_instance *inst) { - struct aead_alg *alg = &tfm->__crt_alg->cra_aead; - struct aead_tfm *crt = &tfm->crt_aead; - - if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8) - return -EINVAL; + struct aead_instance *aead = aead_instance(inst); - crt->setkey = setkey; - crt->encrypt = alg->encrypt; - crt->decrypt = alg->decrypt; - if (!alg->ivsize) { - crt->givencrypt = aead_null_givencrypt; - crt->givdecrypt = aead_null_givdecrypt; + if (!aead->free) { + inst->tmpl->free(inst); + return; } - crt->base = __crypto_aead_cast(tfm); - crt->ivsize = alg->ivsize; - crt->authsize = alg->maxauthsize; - return 0; + aead->free(aead); } -#ifdef CONFIG_NET -static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg) -{ - struct crypto_report_aead raead; - struct 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 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 = { - .ctxsize = crypto_aead_ctxsize, - .init = crypto_init_nivaead_ops, +static const struct crypto_type crypto_aead_type = { + .extsize = crypto_alg_extsize, + .init_tfm = crypto_aead_init_tfm, + .free = crypto_aead_free_instance, #ifdef CONFIG_PROC_FS - .show = crypto_nivaead_show, + .show = crypto_aead_show, #endif - .report = crypto_nivaead_report, + .report = crypto_aead_report, + .maskclear = ~CRYPTO_ALG_TYPE_MASK, + .maskset = CRYPTO_ALG_TYPE_MASK, + .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) +static int aead_geniv_setkey(struct crypto_aead *tfm, + const u8 *key, unsigned int keylen) { - struct crypto_alg *alg; - int err; + struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm); - type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); - type |= CRYPTO_ALG_TYPE_AEAD; - mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV; + return crypto_aead_setkey(ctx->child, key, keylen); +} - alg = crypto_alg_mod_lookup(name, type, mask); - if (IS_ERR(alg)) - return PTR_ERR(alg); +static int aead_geniv_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm); - err = crypto_init_spawn(&spawn->base, alg, spawn->base.inst, mask); - crypto_mod_put(alg); - return err; + return crypto_aead_setauthsize(ctx->child, authsize); } -struct crypto_instance *aead_geniv_alloc(struct crypto_template *tmpl, - struct rtattr **tb, u32 type, - u32 mask) +struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, + struct rtattr **tb, u32 type, u32 mask) { const char *name; struct crypto_aead_spawn *spawn; struct crypto_attr_type *algt; - struct crypto_instance *inst; - struct crypto_alg *alg; + struct aead_instance *inst; + struct aead_alg *alg; + unsigned int ivsize; + unsigned int maxauthsize; int err; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) return ERR_CAST(algt); - if ((algt->type ^ (CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_GENIV)) & - algt->mask) + if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask) return ERR_PTR(-EINVAL); name = crypto_attr_alg_name(tb[1]); @@ -296,61 +215,46 @@ struct crypto_instance *aead_geniv_alloc(struct crypto_template *tmpl, if (!inst) return ERR_PTR(-ENOMEM); - spawn = crypto_instance_ctx(inst); + spawn = aead_instance_ctx(inst); /* Ignore async algorithms if necessary. */ mask |= crypto_requires_sync(algt->type, algt->mask); - crypto_set_aead_spawn(spawn, inst); - err = crypto_grab_nivaead(spawn, name, type, mask); + crypto_set_aead_spawn(spawn, aead_crypto_instance(inst)); + err = crypto_grab_aead(spawn, name, type, mask); if (err) goto err_free_inst; - alg = crypto_aead_spawn_alg(spawn); + alg = crypto_spawn_aead_alg(spawn); + + ivsize = crypto_aead_alg_ivsize(alg); + maxauthsize = crypto_aead_alg_maxauthsize(alg); err = -EINVAL; - if (!alg->cra_aead.ivsize) + 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 (strcmp(tmpl->name, alg->cra_aead.geniv)) - goto err_drop_alg; - - memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); - memcpy(inst->alg.cra_driver_name, alg->cra_driver_name, - CRYPTO_MAX_ALG_NAME); - } else { - err = -ENAMETOOLONG; - if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, - "%s(%s)", tmpl->name, alg->cra_name) >= - CRYPTO_MAX_ALG_NAME) - goto err_drop_alg; - if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, - "%s(%s)", tmpl->name, alg->cra_driver_name) >= - CRYPTO_MAX_ALG_NAME) - goto err_drop_alg; - } + err = -ENAMETOOLONG; + if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME, + "%s(%s)", tmpl->name, alg->base.cra_name) >= + CRYPTO_MAX_ALG_NAME) + goto err_drop_alg; + if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME, + "%s(%s)", tmpl->name, alg->base.cra_driver_name) >= + CRYPTO_MAX_ALG_NAME) + goto err_drop_alg; - inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_GENIV; - inst->alg.cra_flags |= alg->cra_flags & CRYPTO_ALG_ASYNC; - inst->alg.cra_priority = alg->cra_priority; - inst->alg.cra_blocksize = alg->cra_blocksize; - inst->alg.cra_alignmask = alg->cra_alignmask; - inst->alg.cra_type = &crypto_aead_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 = alg->base.cra_blocksize; + inst->alg.base.cra_alignmask = alg->base.cra_alignmask; + inst->alg.base.cra_ctxsize = sizeof(struct aead_geniv_ctx); - inst->alg.cra_aead.ivsize = alg->cra_aead.ivsize; - inst->alg.cra_aead.maxauthsize = alg->cra_aead.maxauthsize; - inst->alg.cra_aead.geniv = alg->cra_aead.geniv; + inst->alg.setkey = aead_geniv_setkey; + inst->alg.setauthsize = aead_geniv_setauthsize; - inst->alg.cra_aead.setkey = alg->cra_aead.setkey; - inst->alg.cra_aead.setauthsize = alg->cra_aead.setauthsize; - inst->alg.cra_aead.encrypt = alg->cra_aead.encrypt; - inst->alg.cra_aead.decrypt = alg->cra_aead.decrypt; + inst->alg.ivsize = ivsize; + inst->alg.maxauthsize = maxauthsize; out: return inst; @@ -364,203 +268,154 @@ err_free_inst: } EXPORT_SYMBOL_GPL(aead_geniv_alloc); -void aead_geniv_free(struct crypto_instance *inst) +void aead_geniv_free(struct aead_instance *inst) { - crypto_drop_aead(crypto_instance_ctx(inst)); + crypto_drop_aead(aead_instance_ctx(inst)); kfree(inst); } EXPORT_SYMBOL_GPL(aead_geniv_free); -int aead_geniv_init(struct crypto_tfm *tfm) +int aead_init_geniv(struct crypto_aead *aead) { - struct crypto_instance *inst = (void *)tfm->__crt_alg; - struct crypto_aead *aead; - - aead = crypto_spawn_aead(crypto_instance_ctx(inst)); - if (IS_ERR(aead)) - return PTR_ERR(aead); - - tfm->crt_aead.base = aead; - tfm->crt_aead.reqsize += crypto_aead_reqsize(aead); + struct aead_geniv_ctx *ctx = crypto_aead_ctx(aead); + struct aead_instance *inst = aead_alg_instance(aead); + struct crypto_aead *child; + int err; - return 0; -} -EXPORT_SYMBOL_GPL(aead_geniv_init); + spin_lock_init(&ctx->lock); -void aead_geniv_exit(struct crypto_tfm *tfm) -{ - crypto_free_aead(tfm->crt_aead.base); -} -EXPORT_SYMBOL_GPL(aead_geniv_exit); + err = crypto_get_default_rng(); + if (err) + goto out; -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; + err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt, + crypto_aead_ivsize(aead)); + crypto_put_default_rng(); + if (err) + goto out; - 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)) + ctx->null = crypto_get_default_null_skcipher(); + err = PTR_ERR(ctx->null); + if (IS_ERR(ctx->null)) 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; - - 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; - } + child = crypto_spawn_aead(aead_instance_ctx(inst)); + err = PTR_ERR(child); + if (IS_ERR(child)) + goto drop_null; + + ctx->child = child; + crypto_aead_set_reqsize(aead, crypto_aead_reqsize(child) + + sizeof(struct aead_request)); - /* Redo the lookup to use the instance we just registered. */ - err = -EAGAIN; + err = 0; -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; + +drop_null: + crypto_put_default_null_skcipher(); + goto out; } +EXPORT_SYMBOL_GPL(aead_init_geniv); -struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask) +void aead_exit_geniv(struct crypto_aead *tfm) { - 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); + struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm); - return ERR_PTR(crypto_nivaead_default(alg, type, mask)); + crypto_free_aead(ctx->child); + crypto_put_default_null_skcipher(); } -EXPORT_SYMBOL_GPL(crypto_lookup_aead); +EXPORT_SYMBOL_GPL(aead_exit_geniv); int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name, u32 type, u32 mask) { - struct crypto_alg *alg; - int err; + spawn->base.frontend = &crypto_aead_type; + return crypto_grab_spawn(&spawn->base, name, type, mask); +} +EXPORT_SYMBOL_GPL(crypto_grab_aead); - type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); - type |= CRYPTO_ALG_TYPE_AEAD; - mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); - mask |= CRYPTO_ALG_TYPE_MASK; +struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask) +{ + return crypto_alloc_tfm(alg_name, &crypto_aead_type, type, mask); +} +EXPORT_SYMBOL_GPL(crypto_alloc_aead); - alg = crypto_lookup_aead(name, type, mask); - if (IS_ERR(alg)) - return PTR_ERR(alg); +static int aead_prepare_alg(struct aead_alg *alg) +{ + struct crypto_alg *base = &alg->base; - err = crypto_init_spawn(&spawn->base, alg, spawn->base.inst, mask); - crypto_mod_put(alg); - return err; + if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8) + return -EINVAL; + + base->cra_type = &crypto_aead_type; + base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK; + base->cra_flags |= CRYPTO_ALG_TYPE_AEAD; + + return 0; } -EXPORT_SYMBOL_GPL(crypto_grab_aead); -struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask) +int crypto_register_aead(struct aead_alg *alg) { - struct crypto_tfm *tfm; + struct crypto_alg *base = &alg->base; int err; - type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); - type |= CRYPTO_ALG_TYPE_AEAD; - mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); - mask |= CRYPTO_ALG_TYPE_MASK; + err = aead_prepare_alg(alg); + if (err) + return err; - for (;;) { - struct crypto_alg *alg; + return crypto_register_alg(base); +} +EXPORT_SYMBOL_GPL(crypto_register_aead); - alg = crypto_lookup_aead(alg_name, type, mask); - if (IS_ERR(alg)) { - err = PTR_ERR(alg); - goto err; - } +void crypto_unregister_aead(struct aead_alg *alg) +{ + crypto_unregister_alg(&alg->base); +} +EXPORT_SYMBOL_GPL(crypto_unregister_aead); - tfm = __crypto_alloc_tfm(alg, type, mask); - if (!IS_ERR(tfm)) - return __crypto_aead_cast(tfm); +int crypto_register_aeads(struct aead_alg *algs, int count) +{ + int i, ret; - crypto_mod_put(alg); - err = PTR_ERR(tfm); + for (i = 0; i < count; i++) { + ret = crypto_register_aead(&algs[i]); + if (ret) + goto err; + } + + return 0; err: - if (err != -EAGAIN) - break; - if (signal_pending(current)) { - err = -EINTR; - break; - } - } + for (--i; i >= 0; --i) + crypto_unregister_aead(&algs[i]); - return ERR_PTR(err); + return ret; } -EXPORT_SYMBOL_GPL(crypto_alloc_aead); +EXPORT_SYMBOL_GPL(crypto_register_aeads); + +void crypto_unregister_aeads(struct aead_alg *algs, int count) +{ + int i; + + for (i = count - 1; i >= 0; --i) + crypto_unregister_aead(&algs[i]); +} +EXPORT_SYMBOL_GPL(crypto_unregister_aeads); + +int aead_register_instance(struct crypto_template *tmpl, + struct aead_instance *inst) +{ + int err; + + err = aead_prepare_alg(&inst->alg); + if (err) + return err; + + return crypto_register_instance(tmpl, aead_crypto_instance(inst)); +} +EXPORT_SYMBOL_GPL(aead_register_instance); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Authenticated Encryption with Associated Data (AEAD)"); |