2874c5fd28
Based on 1 normalized pattern(s): 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 software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
156 lines
4.0 KiB
C
156 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Public Key Encryption
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*
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* Copyright (c) 2015, Intel Corporation
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* Authors: Tadeusz Struk <tadeusz.struk@intel.com>
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*/
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/crypto.h>
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#include <linux/compiler.h>
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#include <crypto/algapi.h>
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#include <linux/cryptouser.h>
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#include <net/netlink.h>
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#include <crypto/akcipher.h>
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#include <crypto/internal/akcipher.h>
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#include "internal.h"
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#ifdef CONFIG_NET
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static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
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{
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struct crypto_report_akcipher rakcipher;
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memset(&rakcipher, 0, sizeof(rakcipher));
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strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
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return nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER,
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sizeof(rakcipher), &rakcipher);
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}
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#else
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static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
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{
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return -ENOSYS;
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}
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#endif
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static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
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__maybe_unused;
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static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
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{
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seq_puts(m, "type : akcipher\n");
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}
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static void crypto_akcipher_exit_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
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struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
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alg->exit(akcipher);
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}
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static int crypto_akcipher_init_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
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struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
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if (alg->exit)
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akcipher->base.exit = crypto_akcipher_exit_tfm;
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if (alg->init)
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return alg->init(akcipher);
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return 0;
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}
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static void crypto_akcipher_free_instance(struct crypto_instance *inst)
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{
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struct akcipher_instance *akcipher = akcipher_instance(inst);
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akcipher->free(akcipher);
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}
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static const struct crypto_type crypto_akcipher_type = {
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.extsize = crypto_alg_extsize,
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.init_tfm = crypto_akcipher_init_tfm,
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.free = crypto_akcipher_free_instance,
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#ifdef CONFIG_PROC_FS
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.show = crypto_akcipher_show,
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#endif
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.report = crypto_akcipher_report,
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.maskclear = ~CRYPTO_ALG_TYPE_MASK,
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.maskset = CRYPTO_ALG_TYPE_MASK,
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.type = CRYPTO_ALG_TYPE_AKCIPHER,
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.tfmsize = offsetof(struct crypto_akcipher, base),
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};
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int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name,
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u32 type, u32 mask)
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{
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spawn->base.frontend = &crypto_akcipher_type;
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return crypto_grab_spawn(&spawn->base, name, type, mask);
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}
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EXPORT_SYMBOL_GPL(crypto_grab_akcipher);
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struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type,
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u32 mask)
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{
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return crypto_alloc_tfm(alg_name, &crypto_akcipher_type, type, mask);
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}
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EXPORT_SYMBOL_GPL(crypto_alloc_akcipher);
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static void akcipher_prepare_alg(struct akcipher_alg *alg)
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{
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struct crypto_alg *base = &alg->base;
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base->cra_type = &crypto_akcipher_type;
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base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
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base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER;
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}
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static int akcipher_default_op(struct akcipher_request *req)
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{
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return -ENOSYS;
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}
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int crypto_register_akcipher(struct akcipher_alg *alg)
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{
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struct crypto_alg *base = &alg->base;
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if (!alg->sign)
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alg->sign = akcipher_default_op;
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if (!alg->verify)
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alg->verify = akcipher_default_op;
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if (!alg->encrypt)
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alg->encrypt = akcipher_default_op;
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if (!alg->decrypt)
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alg->decrypt = akcipher_default_op;
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akcipher_prepare_alg(alg);
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return crypto_register_alg(base);
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}
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EXPORT_SYMBOL_GPL(crypto_register_akcipher);
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void crypto_unregister_akcipher(struct akcipher_alg *alg)
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{
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crypto_unregister_alg(&alg->base);
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}
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EXPORT_SYMBOL_GPL(crypto_unregister_akcipher);
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int akcipher_register_instance(struct crypto_template *tmpl,
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struct akcipher_instance *inst)
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{
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akcipher_prepare_alg(&inst->alg);
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return crypto_register_instance(tmpl, akcipher_crypto_instance(inst));
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}
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EXPORT_SYMBOL_GPL(akcipher_register_instance);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Generic public key cipher type");
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