forked from mirrors/linux
6b34562f0c
A sig_alg backend has just been introduced and all asymmetric
sign/verify algorithms have been migrated to it.
The sign/verify operations can thus be dropped from akcipher_alg.
It is now purely for asymmetric encrypt/decrypt.
Move struct crypto_akcipher_sync_data from internal.h to akcipher.c and
unexport crypto_akcipher_sync_{prep,post}(): They're no longer used by
sig.c but only locally in akcipher.c.
In crypto_akcipher_sync_{prep,post}(), drop various NULL pointer checks
for data->dst as they were only necessary for the verify operation.
In the crypto_sig_*() API calls, remove the forks that were necessary
while algorithms were converted from crypto_akcipher to crypto_sig
one by one.
In struct akcipher_testvec, remove the "params", "param_len" and "algo"
elements as they were only needed for the ecrdsa verify operation.
Remove corresponding dead code from test_akcipher_one() as well.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
203 lines
5.2 KiB
C
203 lines
5.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Cryptographic API.
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*
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* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
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* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
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*/
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#ifndef _CRYPTO_INTERNAL_H
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#define _CRYPTO_INTERNAL_H
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#include <crypto/algapi.h>
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#include <linux/completion.h>
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#include <linux/err.h>
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#include <linux/jump_label.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/notifier.h>
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#include <linux/numa.h>
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#include <linux/refcount.h>
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#include <linux/rwsem.h>
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#include <linux/scatterlist.h>
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#include <linux/sched.h>
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#include <linux/types.h>
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struct crypto_instance;
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struct crypto_template;
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struct crypto_larval {
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struct crypto_alg alg;
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struct crypto_alg *adult;
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struct completion completion;
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u32 mask;
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bool test_started;
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};
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enum {
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CRYPTOA_UNSPEC,
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CRYPTOA_ALG,
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CRYPTOA_TYPE,
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__CRYPTOA_MAX,
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};
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#define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
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/* Maximum number of (rtattr) parameters for each template. */
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#define CRYPTO_MAX_ATTRS 32
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extern struct list_head crypto_alg_list;
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extern struct rw_semaphore crypto_alg_sem;
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extern struct blocking_notifier_head crypto_chain;
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int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
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#if !IS_BUILTIN(CONFIG_CRYPTO_ALGAPI) || \
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IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS)
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static inline bool crypto_boot_test_finished(void)
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{
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return true;
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}
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static inline void set_crypto_boot_test_finished(void)
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{
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}
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#else
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DECLARE_STATIC_KEY_FALSE(__crypto_boot_test_finished);
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static inline bool crypto_boot_test_finished(void)
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{
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return static_branch_likely(&__crypto_boot_test_finished);
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}
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static inline void set_crypto_boot_test_finished(void)
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{
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static_branch_enable(&__crypto_boot_test_finished);
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}
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#endif /* !IS_BUILTIN(CONFIG_CRYPTO_ALGAPI) ||
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* IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS)
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*/
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#ifdef CONFIG_PROC_FS
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void __init crypto_init_proc(void);
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void __exit crypto_exit_proc(void);
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#else
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static inline void crypto_init_proc(void)
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{ }
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static inline void crypto_exit_proc(void)
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{ }
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#endif
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static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
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{
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return alg->cra_ctxsize;
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}
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static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
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{
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return alg->cra_ctxsize;
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}
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struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
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struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
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struct crypto_larval *crypto_larval_alloc(const char *name, u32 type, u32 mask);
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void crypto_schedule_test(struct crypto_larval *larval);
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void crypto_alg_tested(const char *name, int err);
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void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
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struct crypto_alg *nalg);
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void crypto_remove_final(struct list_head *list);
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void crypto_shoot_alg(struct crypto_alg *alg);
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struct crypto_tfm *__crypto_alloc_tfmgfp(struct crypto_alg *alg, u32 type,
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u32 mask, gfp_t gfp);
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struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
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u32 mask);
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void *crypto_create_tfm_node(struct crypto_alg *alg,
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const struct crypto_type *frontend, int node);
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void *crypto_clone_tfm(const struct crypto_type *frontend,
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struct crypto_tfm *otfm);
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static inline void *crypto_create_tfm(struct crypto_alg *alg,
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const struct crypto_type *frontend)
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{
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return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
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}
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struct crypto_alg *crypto_find_alg(const char *alg_name,
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const struct crypto_type *frontend,
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u32 type, u32 mask);
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void *crypto_alloc_tfm_node(const char *alg_name,
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const struct crypto_type *frontend, u32 type, u32 mask,
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int node);
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static inline void *crypto_alloc_tfm(const char *alg_name,
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const struct crypto_type *frontend, u32 type, u32 mask)
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{
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return crypto_alloc_tfm_node(alg_name, frontend, type, mask, NUMA_NO_NODE);
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}
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int crypto_probing_notify(unsigned long val, void *v);
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unsigned int crypto_alg_extsize(struct crypto_alg *alg);
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int crypto_type_has_alg(const char *name, const struct crypto_type *frontend,
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u32 type, u32 mask);
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static inline struct crypto_alg *crypto_alg_get(struct crypto_alg *alg)
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{
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refcount_inc(&alg->cra_refcnt);
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return alg;
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}
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static inline void crypto_alg_put(struct crypto_alg *alg)
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{
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if (refcount_dec_and_test(&alg->cra_refcnt) && alg->cra_destroy)
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alg->cra_destroy(alg);
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}
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static inline int crypto_tmpl_get(struct crypto_template *tmpl)
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{
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return try_module_get(tmpl->module);
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}
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static inline void crypto_tmpl_put(struct crypto_template *tmpl)
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{
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module_put(tmpl->module);
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}
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static inline int crypto_is_larval(struct crypto_alg *alg)
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{
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return alg->cra_flags & CRYPTO_ALG_LARVAL;
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}
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static inline int crypto_is_dead(struct crypto_alg *alg)
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{
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return alg->cra_flags & CRYPTO_ALG_DEAD;
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}
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static inline int crypto_is_moribund(struct crypto_alg *alg)
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{
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return alg->cra_flags & (CRYPTO_ALG_DEAD | CRYPTO_ALG_DYING);
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}
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static inline void crypto_notify(unsigned long val, void *v)
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{
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blocking_notifier_call_chain(&crypto_chain, val, v);
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}
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static inline void crypto_yield(u32 flags)
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{
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if (flags & CRYPTO_TFM_REQ_MAY_SLEEP)
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cond_resched();
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}
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static inline int crypto_is_test_larval(struct crypto_larval *larval)
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{
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return larval->alg.cra_driver_name[0];
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}
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static inline struct crypto_tfm *crypto_tfm_get(struct crypto_tfm *tfm)
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{
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return refcount_inc_not_zero(&tfm->refcnt) ? tfm : ERR_PTR(-EOVERFLOW);
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}
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#endif /* _CRYPTO_INTERNAL_H */
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