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-rw-r--r--crypto/Makefile1
-rw-r--r--crypto/aead.c165
-rw-r--r--crypto/geniv.c176
3 files changed, 179 insertions, 163 deletions
diff --git a/crypto/Makefile b/crypto/Makefile
index efe63940b4e9..77cb19b957d3 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -14,6 +14,7 @@ crypto_algapi-y := algapi.o scatterwalk.o $(crypto_algapi-y)
obj-$(CONFIG_CRYPTO_ALGAPI2) += crypto_algapi.o
obj-$(CONFIG_CRYPTO_AEAD2) += aead.o
+obj-$(CONFIG_CRYPTO_AEAD2) += geniv.o
crypto_skcipher-y := ablkcipher.o
crypto_skcipher-y += skcipher.o
diff --git a/crypto/aead.c b/crypto/aead.c
index ce035589cf57..47f16d139e8e 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -7,19 +7,14 @@
* Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au>
*/
-#include <crypto/internal/geniv.h>
-#include <crypto/internal/rng.h>
-#include <crypto/null.h>
-#include <crypto/scatterwalk.h>
-#include <linux/err.h>
+#include <crypto/internal/aead.h>
+#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/rtnetlink.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
#include <linux/cryptouser.h>
-#include <linux/compiler.h>
#include <net/netlink.h>
#include "internal.h"
@@ -212,162 +207,6 @@ static const struct crypto_type crypto_aead_type = {
.tfmsize = offsetof(struct crypto_aead, base),
};
-static int aead_geniv_setkey(struct crypto_aead *tfm,
- const u8 *key, unsigned int keylen)
-{
- struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
-
- return crypto_aead_setkey(ctx->child, key, keylen);
-}
-
-static int aead_geniv_setauthsize(struct crypto_aead *tfm,
- unsigned int authsize)
-{
- struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
-
- return crypto_aead_setauthsize(ctx->child, authsize);
-}
-
-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 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) & algt->mask)
- return ERR_PTR(-EINVAL);
-
- name = crypto_attr_alg_name(tb[1]);
- if (IS_ERR(name))
- return ERR_CAST(name);
-
- inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL);
- if (!inst)
- return ERR_PTR(-ENOMEM);
-
- spawn = aead_instance_ctx(inst);
-
- /* Ignore async algorithms if necessary. */
- mask |= crypto_requires_sync(algt->type, algt->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_spawn_aead_alg(spawn);
-
- ivsize = crypto_aead_alg_ivsize(alg);
- maxauthsize = crypto_aead_alg_maxauthsize(alg);
-
- err = -EINVAL;
- if (ivsize < sizeof(u64))
- 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.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.setkey = aead_geniv_setkey;
- inst->alg.setauthsize = aead_geniv_setauthsize;
-
- inst->alg.ivsize = ivsize;
- inst->alg.maxauthsize = maxauthsize;
-
-out:
- return inst;
-
-err_drop_alg:
- crypto_drop_aead(spawn);
-err_free_inst:
- kfree(inst);
- inst = ERR_PTR(err);
- goto out;
-}
-EXPORT_SYMBOL_GPL(aead_geniv_alloc);
-
-void aead_geniv_free(struct aead_instance *inst)
-{
- crypto_drop_aead(aead_instance_ctx(inst));
- kfree(inst);
-}
-EXPORT_SYMBOL_GPL(aead_geniv_free);
-
-int aead_init_geniv(struct crypto_aead *aead)
-{
- struct aead_geniv_ctx *ctx = crypto_aead_ctx(aead);
- struct aead_instance *inst = aead_alg_instance(aead);
- struct crypto_aead *child;
- int err;
-
- spin_lock_init(&ctx->lock);
-
- err = crypto_get_default_rng();
- if (err)
- goto out;
-
- err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
- crypto_aead_ivsize(aead));
- crypto_put_default_rng();
- if (err)
- goto out;
-
- ctx->sknull = crypto_get_default_null_skcipher();
- err = PTR_ERR(ctx->sknull);
- if (IS_ERR(ctx->sknull))
- goto out;
-
- 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));
-
- err = 0;
-
-out:
- return err;
-
-drop_null:
- crypto_put_default_null_skcipher();
- goto out;
-}
-EXPORT_SYMBOL_GPL(aead_init_geniv);
-
-void aead_exit_geniv(struct crypto_aead *tfm)
-{
- struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
-
- crypto_free_aead(ctx->child);
- crypto_put_default_null_skcipher();
-}
-EXPORT_SYMBOL_GPL(aead_exit_geniv);
-
int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
u32 type, u32 mask)
{
diff --git a/crypto/geniv.c b/crypto/geniv.c
new file mode 100644
index 000000000000..b9e45a2a98b5
--- /dev/null
+++ b/crypto/geniv.c
@@ -0,0 +1,176 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * geniv: Shared IV generator code
+ *
+ * This file provides common code to IV generators such as seqiv.
+ *
+ * Copyright (c) 2007-2019 Herbert Xu <herbert@gondor.apana.org.au>
+ */
+
+#include <crypto/internal/geniv.h>
+#include <crypto/internal/rng.h>
+#include <crypto/null.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/rtnetlink.h>
+#include <linux/slab.h>
+
+static int aead_geniv_setkey(struct crypto_aead *tfm,
+ const u8 *key, unsigned int keylen)
+{
+ struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
+
+ return crypto_aead_setkey(ctx->child, key, keylen);
+}
+
+static int aead_geniv_setauthsize(struct crypto_aead *tfm,
+ unsigned int authsize)
+{
+ struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
+
+ return crypto_aead_setauthsize(ctx->child, authsize);
+}
+
+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 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) & algt->mask)
+ return ERR_PTR(-EINVAL);
+
+ name = crypto_attr_alg_name(tb[1]);
+ if (IS_ERR(name))
+ return ERR_CAST(name);
+
+ inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL);
+ if (!inst)
+ return ERR_PTR(-ENOMEM);
+
+ spawn = aead_instance_ctx(inst);
+
+ /* Ignore async algorithms if necessary. */
+ mask |= crypto_requires_sync(algt->type, algt->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_spawn_aead_alg(spawn);
+
+ ivsize = crypto_aead_alg_ivsize(alg);
+ maxauthsize = crypto_aead_alg_maxauthsize(alg);
+
+ err = -EINVAL;
+ if (ivsize < sizeof(u64))
+ 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.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.setkey = aead_geniv_setkey;
+ inst->alg.setauthsize = aead_geniv_setauthsize;
+
+ inst->alg.ivsize = ivsize;
+ inst->alg.maxauthsize = maxauthsize;
+
+out:
+ return inst;
+
+err_drop_alg:
+ crypto_drop_aead(spawn);
+err_free_inst:
+ kfree(inst);
+ inst = ERR_PTR(err);
+ goto out;
+}
+EXPORT_SYMBOL_GPL(aead_geniv_alloc);
+
+void aead_geniv_free(struct aead_instance *inst)
+{
+ crypto_drop_aead(aead_instance_ctx(inst));
+ kfree(inst);
+}
+EXPORT_SYMBOL_GPL(aead_geniv_free);
+
+int aead_init_geniv(struct crypto_aead *aead)
+{
+ struct aead_geniv_ctx *ctx = crypto_aead_ctx(aead);
+ struct aead_instance *inst = aead_alg_instance(aead);
+ struct crypto_aead *child;
+ int err;
+
+ spin_lock_init(&ctx->lock);
+
+ err = crypto_get_default_rng();
+ if (err)
+ goto out;
+
+ err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
+ crypto_aead_ivsize(aead));
+ crypto_put_default_rng();
+ if (err)
+ goto out;
+
+ ctx->sknull = crypto_get_default_null_skcipher();
+ err = PTR_ERR(ctx->sknull);
+ if (IS_ERR(ctx->sknull))
+ goto out;
+
+ 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));
+
+ err = 0;
+
+out:
+ return err;
+
+drop_null:
+ crypto_put_default_null_skcipher();
+ goto out;
+}
+EXPORT_SYMBOL_GPL(aead_init_geniv);
+
+void aead_exit_geniv(struct crypto_aead *tfm)
+{
+ struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm);
+
+ crypto_free_aead(ctx->child);
+ crypto_put_default_null_skcipher();
+}
+EXPORT_SYMBOL_GPL(aead_exit_geniv);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Shared IV generator code");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 19:45:14 +0000