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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* keyctl kernel bits
*
* Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef __LINUX_KEYCTL_H
#define __LINUX_KEYCTL_H
#include <uapi/linux/keyctl.h>
struct kernel_pkey_query {
__u32 supported_ops; /* Which ops are supported */
__u32 key_size; /* Size of the key in bits */
__u16 max_data_size; /* Maximum size of raw data to sign in bytes */
__u16 max_sig_size; /* Maximum size of signature in bytes */
__u16 max_enc_size; /* Maximum size of encrypted blob in bytes */
__u16 max_dec_size; /* Maximum size of decrypted blob in bytes */
};
enum kernel_pkey_operation {
kernel_pkey_encrypt,
kernel_pkey_decrypt,
kernel_pkey_sign,
kernel_pkey_verify,
};
struct kernel_pkey_params {
struct key *key;
const char *encoding; /* Encoding (eg. "oaep" or "raw" for none) */
const char *hash_algo; /* Digest algorithm used (eg. "sha1") or NULL if N/A */
char *info; /* Modified info string to be released later */
__u32 in_len; /* Input data size */
union {
__u32 out_len; /* Output buffer size (enc/dec/sign) */
__u32 in2_len; /* 2nd input data size (verify) */
};
enum kernel_pkey_operation op : 8;
};
#endif /* __LINUX_KEYCTL_H */