crypto: seqiv - Remove seqniv
Now that IPsec no longer uses seqniv we can remove it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>hifive-unleashed-5.1
Herbert Xu
parent
de0ded77b9
commit
8a2cd1c4a7
245
crypto/seqiv.c
245
crypto/seqiv.c
|
|
@ -26,11 +26,6 @@
|
|||
#include <linux/spinlock.h>
|
||||
#include <linux/string.h>
|
||||
|
||||
struct seqniv_request_ctx {
|
||||
struct scatterlist dst[2];
|
||||
struct aead_request subreq;
|
||||
};
|
||||
|
||||
struct seqiv_ctx {
|
||||
spinlock_t lock;
|
||||
u8 salt[] __attribute__ ((aligned(__alignof__(u32))));
|
||||
|
|
@ -124,50 +119,6 @@ static void seqiv_aead_encrypt_complete(struct crypto_async_request *base,
|
|||
aead_request_complete(req, err);
|
||||
}
|
||||
|
||||
static void seqniv_aead_encrypt_complete2(struct aead_request *req, int err)
|
||||
{
|
||||
unsigned int ivsize = 8;
|
||||
u8 data[20];
|
||||
|
||||
if (err == -EINPROGRESS)
|
||||
return;
|
||||
|
||||
/* Swap IV and ESP header back to correct order. */
|
||||
scatterwalk_map_and_copy(data, req->dst, 0, req->assoclen + ivsize, 0);
|
||||
scatterwalk_map_and_copy(data + ivsize, req->dst, 0, req->assoclen, 1);
|
||||
scatterwalk_map_and_copy(data, req->dst, req->assoclen, ivsize, 1);
|
||||
}
|
||||
|
||||
static void seqniv_aead_encrypt_complete(struct crypto_async_request *base,
|
||||
int err)
|
||||
{
|
||||
struct aead_request *req = base->data;
|
||||
|
||||
seqniv_aead_encrypt_complete2(req, err);
|
||||
aead_request_complete(req, err);
|
||||
}
|
||||
|
||||
static void seqniv_aead_decrypt_complete2(struct aead_request *req, int err)
|
||||
{
|
||||
u8 data[4];
|
||||
|
||||
if (err == -EINPROGRESS)
|
||||
return;
|
||||
|
||||
/* Move ESP header back to correct location. */
|
||||
scatterwalk_map_and_copy(data, req->dst, 16, req->assoclen - 8, 0);
|
||||
scatterwalk_map_and_copy(data, req->dst, 8, req->assoclen - 8, 1);
|
||||
}
|
||||
|
||||
static void seqniv_aead_decrypt_complete(struct crypto_async_request *base,
|
||||
int err)
|
||||
{
|
||||
struct aead_request *req = base->data;
|
||||
|
||||
seqniv_aead_decrypt_complete2(req, err);
|
||||
aead_request_complete(req, err);
|
||||
}
|
||||
|
||||
static void seqiv_geniv(struct seqiv_ctx *ctx, u8 *info, u64 seq,
|
||||
unsigned int ivsize)
|
||||
{
|
||||
|
|
@ -273,62 +224,6 @@ static int seqiv_aead_givencrypt(struct aead_givcrypt_request *req)
|
|||
return err;
|
||||
}
|
||||
|
||||
static int seqniv_aead_encrypt(struct aead_request *req)
|
||||
{
|
||||
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
|
||||
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
|
||||
struct seqniv_request_ctx *rctx = aead_request_ctx(req);
|
||||
struct aead_request *subreq = &rctx->subreq;
|
||||
struct scatterlist *dst;
|
||||
crypto_completion_t compl;
|
||||
void *data;
|
||||
unsigned int ivsize = 8;
|
||||
u8 buf[20] __attribute__ ((aligned(__alignof__(u32))));
|
||||
int err;
|
||||
|
||||
if (req->cryptlen < ivsize)
|
||||
return -EINVAL;
|
||||
|
||||
/* ESP AD is at most 12 bytes (ESN). */
|
||||
if (req->assoclen > 12)
|
||||
return -EINVAL;
|
||||
|
||||
aead_request_set_tfm(subreq, ctx->geniv.child);
|
||||
|
||||
compl = seqniv_aead_encrypt_complete;
|
||||
data = req;
|
||||
|
||||
if (req->src != req->dst) {
|
||||
struct blkcipher_desc desc = {
|
||||
.tfm = ctx->null,
|
||||
};
|
||||
|
||||
err = crypto_blkcipher_encrypt(&desc, req->dst, req->src,
|
||||
req->assoclen + req->cryptlen);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
dst = scatterwalk_ffwd(rctx->dst, req->dst, ivsize);
|
||||
|
||||
aead_request_set_callback(subreq, req->base.flags, compl, data);
|
||||
aead_request_set_crypt(subreq, dst, dst,
|
||||
req->cryptlen - ivsize, req->iv);
|
||||
aead_request_set_ad(subreq, req->assoclen);
|
||||
|
||||
memcpy(buf, req->iv, ivsize);
|
||||
crypto_xor(buf, ctx->salt, ivsize);
|
||||
memcpy(req->iv, buf, ivsize);
|
||||
|
||||
/* Swap order of IV and ESP AD for ICV generation. */
|
||||
scatterwalk_map_and_copy(buf + ivsize, req->dst, 0, req->assoclen, 0);
|
||||
scatterwalk_map_and_copy(buf, req->dst, 0, req->assoclen + ivsize, 1);
|
||||
|
||||
err = crypto_aead_encrypt(subreq);
|
||||
seqniv_aead_encrypt_complete2(req, err);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int seqiv_aead_encrypt(struct aead_request *req)
|
||||
{
|
||||
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
|
||||
|
|
@ -387,63 +282,6 @@ static int seqiv_aead_encrypt(struct aead_request *req)
|
|||
return err;
|
||||
}
|
||||
|
||||
static int seqniv_aead_decrypt(struct aead_request *req)
|
||||
{
|
||||
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
|
||||
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
|
||||
struct seqniv_request_ctx *rctx = aead_request_ctx(req);
|
||||
struct aead_request *subreq = &rctx->subreq;
|
||||
struct scatterlist *dst;
|
||||
crypto_completion_t compl;
|
||||
void *data;
|
||||
unsigned int ivsize = 8;
|
||||
u8 buf[20];
|
||||
int err;
|
||||
|
||||
if (req->cryptlen < ivsize + crypto_aead_authsize(geniv))
|
||||
return -EINVAL;
|
||||
|
||||
aead_request_set_tfm(subreq, ctx->geniv.child);
|
||||
|
||||
compl = req->base.complete;
|
||||
data = req->base.data;
|
||||
|
||||
if (req->assoclen > 12)
|
||||
return -EINVAL;
|
||||
else if (req->assoclen > 8) {
|
||||
compl = seqniv_aead_decrypt_complete;
|
||||
data = req;
|
||||
}
|
||||
|
||||
if (req->src != req->dst) {
|
||||
struct blkcipher_desc desc = {
|
||||
.tfm = ctx->null,
|
||||
};
|
||||
|
||||
err = crypto_blkcipher_encrypt(&desc, req->dst, req->src,
|
||||
req->assoclen + req->cryptlen);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
/* Move ESP AD forward for ICV generation. */
|
||||
scatterwalk_map_and_copy(buf, req->dst, 0, req->assoclen + ivsize, 0);
|
||||
memcpy(req->iv, buf + req->assoclen, ivsize);
|
||||
scatterwalk_map_and_copy(buf, req->dst, ivsize, req->assoclen, 1);
|
||||
|
||||
dst = scatterwalk_ffwd(rctx->dst, req->dst, ivsize);
|
||||
|
||||
aead_request_set_callback(subreq, req->base.flags, compl, data);
|
||||
aead_request_set_crypt(subreq, dst, dst,
|
||||
req->cryptlen - ivsize, req->iv);
|
||||
aead_request_set_ad(subreq, req->assoclen);
|
||||
|
||||
err = crypto_aead_decrypt(subreq);
|
||||
if (req->assoclen > 8)
|
||||
seqniv_aead_decrypt_complete2(req, err);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int seqiv_aead_decrypt(struct aead_request *req)
|
||||
{
|
||||
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
|
||||
|
|
@ -558,11 +396,6 @@ static int seqiv_aead_init(struct crypto_aead *tfm)
|
|||
return seqiv_aead_init_common(tfm, sizeof(struct aead_request));
|
||||
}
|
||||
|
||||
static int seqniv_aead_init(struct crypto_aead *tfm)
|
||||
{
|
||||
return seqiv_aead_init_common(tfm, sizeof(struct seqniv_request_ctx));
|
||||
}
|
||||
|
||||
static void seqiv_aead_exit(struct crypto_aead *tfm)
|
||||
{
|
||||
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(tfm);
|
||||
|
|
@ -699,58 +532,6 @@ static int seqiv_create(struct crypto_template *tmpl, struct rtattr **tb)
|
|||
return err;
|
||||
}
|
||||
|
||||
static int seqniv_create(struct crypto_template *tmpl, struct rtattr **tb)
|
||||
{
|
||||
struct aead_instance *inst;
|
||||
struct crypto_aead_spawn *spawn;
|
||||
struct aead_alg *alg;
|
||||
int err;
|
||||
|
||||
inst = aead_geniv_alloc(tmpl, tb, 0, 0);
|
||||
err = PTR_ERR(inst);
|
||||
if (IS_ERR(inst))
|
||||
goto out;
|
||||
|
||||
spawn = aead_instance_ctx(inst);
|
||||
alg = crypto_spawn_aead_alg(spawn);
|
||||
|
||||
if (alg->base.cra_aead.encrypt)
|
||||
goto done;
|
||||
|
||||
err = -EINVAL;
|
||||
if (inst->alg.ivsize != sizeof(u64))
|
||||
goto free_inst;
|
||||
|
||||
inst->alg.encrypt = seqniv_aead_encrypt;
|
||||
inst->alg.decrypt = seqniv_aead_decrypt;
|
||||
|
||||
inst->alg.init = seqniv_aead_init;
|
||||
inst->alg.exit = seqiv_aead_exit;
|
||||
|
||||
if ((alg->base.cra_flags & CRYPTO_ALG_AEAD_NEW)) {
|
||||
inst->alg.encrypt = seqiv_aead_encrypt;
|
||||
inst->alg.decrypt = seqiv_aead_decrypt;
|
||||
|
||||
inst->alg.init = seqiv_aead_init;
|
||||
}
|
||||
|
||||
inst->alg.base.cra_alignmask |= __alignof__(u32) - 1;
|
||||
inst->alg.base.cra_ctxsize = sizeof(struct seqiv_aead_ctx);
|
||||
inst->alg.base.cra_ctxsize += inst->alg.ivsize;
|
||||
|
||||
done:
|
||||
err = aead_register_instance(tmpl, inst);
|
||||
if (err)
|
||||
goto free_inst;
|
||||
|
||||
out:
|
||||
return err;
|
||||
|
||||
free_inst:
|
||||
aead_geniv_free(inst);
|
||||
goto out;
|
||||
}
|
||||
|
||||
static void seqiv_free(struct crypto_instance *inst)
|
||||
{
|
||||
if ((inst->alg.cra_flags ^ CRYPTO_ALG_TYPE_AEAD) & CRYPTO_ALG_TYPE_MASK)
|
||||
|
|
@ -766,36 +547,13 @@ static struct crypto_template seqiv_tmpl = {
|
|||
.module = THIS_MODULE,
|
||||
};
|
||||
|
||||
static struct crypto_template seqniv_tmpl = {
|
||||
.name = "seqniv",
|
||||
.create = seqniv_create,
|
||||
.free = seqiv_free,
|
||||
.module = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int __init seqiv_module_init(void)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = crypto_register_template(&seqiv_tmpl);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
err = crypto_register_template(&seqniv_tmpl);
|
||||
if (err)
|
||||
goto out_undo_niv;
|
||||
|
||||
out:
|
||||
return err;
|
||||
|
||||
out_undo_niv:
|
||||
crypto_unregister_template(&seqiv_tmpl);
|
||||
goto out;
|
||||
return crypto_register_template(&seqiv_tmpl);
|
||||
}
|
||||
|
||||
static void __exit seqiv_module_exit(void)
|
||||
{
|
||||
crypto_unregister_template(&seqniv_tmpl);
|
||||
crypto_unregister_template(&seqiv_tmpl);
|
||||
}
|
||||
|
||||
|
|
@ -805,4 +563,3 @@ module_exit(seqiv_module_exit);
|
|||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("Sequence Number IV Generator");
|
||||
MODULE_ALIAS_CRYPTO("seqiv");
|
||||
MODULE_ALIAS_CRYPTO("seqniv");
|
||||
|
|
|
|||
Loading…
Reference in New Issue