Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-27 05:11:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

crypto: aead - Remove old AEAD interfaces

Browse Source 
Now that the AEAD conversion is complete we can rip out the old
AEAD interafce and associated code.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-08-14 15:30:41 +08:00
parent 0a139416ee
commit b0d955ba46
5 changed files with 28 additions and 818 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

606
crypto/aead.c
View File

@ -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)
@ -208,64 +103,6 @@ static int crypto_aead_init_tfm(struct crypto_tfm *tfm)
return 0;
}
#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)
{
@ -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;

148
include/crypto/aead.h
View File

@ -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
@ -86,33 +86,17 @@
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;
void *__ctx[] CRYPTO_MINALIGN_ATTR;
};
/**
* 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
@ -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);
}
/**
@ -549,23 +517,6 @@ static inline void aead_request_set_crypt(struct aead_request *req,
req->iv = iv;
}
/**
* 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
@ -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 */

42
include/crypto/internal/aead.h
View File

@ -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)

2
include/crypto/internal/geniv.h
View File

@ -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);

48
include/linux/crypto.h
View File

@ -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);
@ -274,47 +271,6 @@ struct ablkcipher_alg {
unsigned int ivsize;
};
/**
* 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
@ -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;