| /* Asymmetric public-key cryptography key subtype |
| * |
| * See Documentation/crypto/asymmetric-keys.txt |
| * |
| * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public Licence |
| * as published by the Free Software Foundation; either version |
| * 2 of the Licence, or (at your option) any later version. |
| */ |
| |
| #ifndef _KEYS_ASYMMETRIC_SUBTYPE_H |
| #define _KEYS_ASYMMETRIC_SUBTYPE_H |
| |
| #include <linux/seq_file.h> |
| #include <keys/asymmetric-type.h> |
| |
| struct kernel_pkey_query; |
| struct kernel_pkey_params; |
| struct public_key_signature; |
| |
| /* |
| * Keys of this type declare a subtype that indicates the handlers and |
| * capabilities. |
| */ |
| struct asymmetric_key_subtype { |
| struct module *owner; |
| const char *name; |
| unsigned short name_len; /* length of name */ |
| |
| /* Describe a key of this subtype for /proc/keys */ |
| void (*describe)(const struct key *key, struct seq_file *m); |
| |
| /* Destroy a key of this subtype */ |
| void (*destroy)(void *payload_crypto, void *payload_auth); |
| |
| int (*query)(const struct kernel_pkey_params *params, |
| struct kernel_pkey_query *info); |
| |
| /* Encrypt/decrypt/sign data */ |
| int (*eds_op)(struct kernel_pkey_params *params, |
| const void *in, void *out); |
| |
| /* Verify the signature on a key of this subtype (optional) */ |
| int (*verify_signature)(const struct key *key, |
| const struct public_key_signature *sig); |
| }; |
| |
| /** |
| * asymmetric_key_subtype - Get the subtype from an asymmetric key |
| * @key: The key of interest. |
| * |
| * Retrieves and returns the subtype pointer of the asymmetric key from the |
| * type-specific data attached to the key. |
| */ |
| static inline |
| struct asymmetric_key_subtype *asymmetric_key_subtype(const struct key *key) |
| { |
| return key->payload.data[asym_subtype]; |
| } |
| |
| #endif /* _KEYS_ASYMMETRIC_SUBTYPE_H */ |