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116 lines
3.0 KiB
116 lines
3.0 KiB
/* |
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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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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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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 <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 "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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strncpy(rakcipher.type, "akcipher", sizeof(rakcipher.type)); |
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if (nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER, |
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sizeof(struct crypto_report_akcipher), &rakcipher)) |
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goto nla_put_failure; |
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return 0; |
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nla_put_failure: |
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return -EMSGSIZE; |
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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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__attribute__ ((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 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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#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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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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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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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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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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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("Generic public key cipher type");
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