1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* keyctl kernel bits 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. 5*4882a593Smuzhiyun * Written by David Howells (dhowells@redhat.com) 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef __LINUX_KEYCTL_H 9*4882a593Smuzhiyun #define __LINUX_KEYCTL_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <uapi/linux/keyctl.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun struct kernel_pkey_query { 14*4882a593Smuzhiyun __u32 supported_ops; /* Which ops are supported */ 15*4882a593Smuzhiyun __u32 key_size; /* Size of the key in bits */ 16*4882a593Smuzhiyun __u16 max_data_size; /* Maximum size of raw data to sign in bytes */ 17*4882a593Smuzhiyun __u16 max_sig_size; /* Maximum size of signature in bytes */ 18*4882a593Smuzhiyun __u16 max_enc_size; /* Maximum size of encrypted blob in bytes */ 19*4882a593Smuzhiyun __u16 max_dec_size; /* Maximum size of decrypted blob in bytes */ 20*4882a593Smuzhiyun }; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun enum kernel_pkey_operation { 23*4882a593Smuzhiyun kernel_pkey_encrypt, 24*4882a593Smuzhiyun kernel_pkey_decrypt, 25*4882a593Smuzhiyun kernel_pkey_sign, 26*4882a593Smuzhiyun kernel_pkey_verify, 27*4882a593Smuzhiyun }; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun struct kernel_pkey_params { 30*4882a593Smuzhiyun struct key *key; 31*4882a593Smuzhiyun const char *encoding; /* Encoding (eg. "oaep" or "raw" for none) */ 32*4882a593Smuzhiyun const char *hash_algo; /* Digest algorithm used (eg. "sha1") or NULL if N/A */ 33*4882a593Smuzhiyun char *info; /* Modified info string to be released later */ 34*4882a593Smuzhiyun __u32 in_len; /* Input data size */ 35*4882a593Smuzhiyun union { 36*4882a593Smuzhiyun __u32 out_len; /* Output buffer size (enc/dec/sign) */ 37*4882a593Smuzhiyun __u32 in2_len; /* 2nd input data size (verify) */ 38*4882a593Smuzhiyun }; 39*4882a593Smuzhiyun enum kernel_pkey_operation op : 8; 40*4882a593Smuzhiyun }; 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #endif /* __LINUX_KEYCTL_H */ 43