linux-stable/crypto/internal.h
Herbert Xu 891ebfdfa3 crypto: sig - Fix verify call
The dst SG list needs to be set to NULL for verify calls.  Do
this as otherwise the underlying algorithm may fail.

Furthermore the digest needs to be copied just like the source.

Fixes: 6cb8815f41 ("crypto: sig - Add interface for sign/verify")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-06-27 15:40:24 +08:00

220 lines
5.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Cryptographic API.
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
*/
#ifndef _CRYPTO_INTERNAL_H
#define _CRYPTO_INTERNAL_H
#include <crypto/algapi.h>
#include <linux/completion.h>
#include <linux/err.h>
#include <linux/jump_label.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/numa.h>
#include <linux/refcount.h>
#include <linux/rwsem.h>
#include <linux/scatterlist.h>
#include <linux/sched.h>
#include <linux/types.h>
struct akcipher_request;
struct crypto_akcipher;
struct crypto_instance;
struct crypto_template;
struct crypto_larval {
struct crypto_alg alg;
struct crypto_alg *adult;
struct completion completion;
u32 mask;
bool test_started;
};
struct crypto_akcipher_sync_data {
struct crypto_akcipher *tfm;
const void *src;
void *dst;
unsigned int slen;
unsigned int dlen;
struct akcipher_request *req;
struct crypto_wait cwait;
struct scatterlist sg;
u8 *buf;
};
enum {
CRYPTOA_UNSPEC,
CRYPTOA_ALG,
CRYPTOA_TYPE,
__CRYPTOA_MAX,
};
#define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
/* Maximum number of (rtattr) parameters for each template. */
#define CRYPTO_MAX_ATTRS 32
extern struct list_head crypto_alg_list;
extern struct rw_semaphore crypto_alg_sem;
extern struct blocking_notifier_head crypto_chain;
int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
#ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS
static inline bool crypto_boot_test_finished(void)
{
return true;
}
static inline void set_crypto_boot_test_finished(void)
{
}
#else
DECLARE_STATIC_KEY_FALSE(__crypto_boot_test_finished);
static inline bool crypto_boot_test_finished(void)
{
return static_branch_likely(&__crypto_boot_test_finished);
}
static inline void set_crypto_boot_test_finished(void)
{
static_branch_enable(&__crypto_boot_test_finished);
}
#endif /* !CONFIG_CRYPTO_MANAGER_DISABLE_TESTS */
#ifdef CONFIG_PROC_FS
void __init crypto_init_proc(void);
void __exit crypto_exit_proc(void);
#else
static inline void crypto_init_proc(void)
{ }
static inline void crypto_exit_proc(void)
{ }
#endif
static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
{
return alg->cra_ctxsize;
}
static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
{
return alg->cra_ctxsize;
}
struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
void crypto_larval_kill(struct crypto_alg *alg);
void crypto_wait_for_test(struct crypto_larval *larval);
void crypto_alg_tested(const char *name, int err);
void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
struct crypto_alg *nalg);
void crypto_remove_final(struct list_head *list);
void crypto_shoot_alg(struct crypto_alg *alg);
struct crypto_tfm *__crypto_alloc_tfmgfp(struct crypto_alg *alg, u32 type,
u32 mask, gfp_t gfp);
struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
u32 mask);
void *crypto_create_tfm_node(struct crypto_alg *alg,
const struct crypto_type *frontend, int node);
void *crypto_clone_tfm(const struct crypto_type *frontend,
struct crypto_tfm *otfm);
int crypto_akcipher_sync_prep(struct crypto_akcipher_sync_data *data);
int crypto_akcipher_sync_post(struct crypto_akcipher_sync_data *data, int err);
int crypto_init_akcipher_ops_sig(struct crypto_tfm *tfm);
static inline void *crypto_create_tfm(struct crypto_alg *alg,
const struct crypto_type *frontend)
{
return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
}
struct crypto_alg *crypto_find_alg(const char *alg_name,
const struct crypto_type *frontend,
u32 type, u32 mask);
void *crypto_alloc_tfm_node(const char *alg_name,
const struct crypto_type *frontend, u32 type, u32 mask,
int node);
static inline void *crypto_alloc_tfm(const char *alg_name,
const struct crypto_type *frontend, u32 type, u32 mask)
{
return crypto_alloc_tfm_node(alg_name, frontend, type, mask, NUMA_NO_NODE);
}
int crypto_probing_notify(unsigned long val, void *v);
unsigned int crypto_alg_extsize(struct crypto_alg *alg);
int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
u32 type, u32 mask);
static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
{
refcount_inc(&alg->cra_refcnt);
return alg;
}
static inline void crypto_alg_put(struct crypto_alg *alg)
{
if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
alg->cra_destroy(alg);
}
static inline int crypto_tmpl_get(struct crypto_template *tmpl)
{
return try_module_get(tmpl->module);
}
static inline void crypto_tmpl_put(struct crypto_template *tmpl)
{
module_put(tmpl->module);
}
static inline int crypto_is_larval(struct crypto_alg *alg)
{
return alg->cra_flags & CRYPTO_ALG_LARVAL;
}
static inline int crypto_is_dead(struct crypto_alg *alg)
{
return alg->cra_flags & CRYPTO_ALG_DEAD;
}
static inline int crypto_is_moribund(struct crypto_alg *alg)
{
return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
}
static inline void crypto_notify(unsigned long val, void *v)
{
blocking_notifier_call_chain(&crypto_chain, val, v);
}
static inline void crypto_yield(u32 flags)
{
if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
cond_resched();
}
static inline int crypto_is_test_larval(struct crypto_larval *larval)
{
return larval->alg.cra_driver_name[0];
}
static inline struct crypto_tfm *crypto_tfm_get(struct crypto_tfm *tfm)
{
return refcount_inc_not_zero(&tfm->refcnt) ? tfm : ERR_PTR(-EOVERFLOW);
}
#endif /* _CRYPTO_INTERNAL_H */