^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Public Key Encryption
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2015, Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <crypto/algapi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/cryptouser.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <net/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <crypto/akcipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <crypto/internal/akcipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #ifdef CONFIG_NET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct crypto_report_akcipher rakcipher;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) memset(&rakcipher, 0, sizeof(rakcipher));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) sizeof(rakcipher), &rakcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) __maybe_unused;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) seq_puts(m, "type : akcipher\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static void crypto_akcipher_exit_tfm(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) alg->exit(akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static int crypto_akcipher_init_tfm(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (alg->exit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) akcipher->base.exit = crypto_akcipher_exit_tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (alg->init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return alg->init(akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static void crypto_akcipher_free_instance(struct crypto_instance *inst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct akcipher_instance *akcipher = akcipher_instance(inst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) akcipher->free(akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static const struct crypto_type crypto_akcipher_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .extsize = crypto_alg_extsize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .init_tfm = crypto_akcipher_init_tfm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .free = crypto_akcipher_free_instance,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .show = crypto_akcipher_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .report = crypto_akcipher_report,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .maskclear = ~CRYPTO_ALG_TYPE_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .maskset = CRYPTO_ALG_TYPE_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .type = CRYPTO_ALG_TYPE_AKCIPHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .tfmsize = offsetof(struct crypto_akcipher, base),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct crypto_instance *inst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) const char *name, u32 type, u32 mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) spawn->base.frontend = &crypto_akcipher_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) EXPORT_SYMBOL_GPL(crypto_grab_akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) u32 mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return crypto_alloc_tfm(alg_name, &crypto_akcipher_type, type, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) EXPORT_SYMBOL_GPL(crypto_alloc_akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static void akcipher_prepare_alg(struct akcipher_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct crypto_alg *base = &alg->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) base->cra_type = &crypto_akcipher_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static int akcipher_default_op(struct akcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int crypto_register_akcipher(struct akcipher_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct crypto_alg *base = &alg->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (!alg->sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) alg->sign = akcipher_default_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (!alg->verify)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) alg->verify = akcipher_default_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (!alg->encrypt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) alg->encrypt = akcipher_default_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (!alg->decrypt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) alg->decrypt = akcipher_default_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) akcipher_prepare_alg(alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return crypto_register_alg(base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) EXPORT_SYMBOL_GPL(crypto_register_akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) void crypto_unregister_akcipher(struct akcipher_alg *alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) crypto_unregister_alg(&alg->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) EXPORT_SYMBOL_GPL(crypto_unregister_akcipher);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) int akcipher_register_instance(struct crypto_template *tmpl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct akcipher_instance *inst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if (WARN_ON(!inst->free))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) akcipher_prepare_alg(&inst->alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return crypto_register_instance(tmpl, akcipher_crypto_instance(inst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) EXPORT_SYMBOL_GPL(akcipher_register_instance);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) MODULE_DESCRIPTION("Generic public key cipher type");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags