1 /* keyctl kernel bits 2 * 3 * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells ([email protected]) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11 12 #ifndef __LINUX_KEYCTL_H 13 #define __LINUX_KEYCTL_H 14 15 #include <uapi/linux/keyctl.h> 16 17 struct kernel_pkey_query { 18 __u32 supported_ops; /* Which ops are supported */ 19 __u32 key_size; /* Size of the key in bits */ 20 __u16 max_data_size; /* Maximum size of raw data to sign in bytes */ 21 __u16 max_sig_size; /* Maximum size of signature in bytes */ 22 __u16 max_enc_size; /* Maximum size of encrypted blob in bytes */ 23 __u16 max_dec_size; /* Maximum size of decrypted blob in bytes */ 24 }; 25 26 enum kernel_pkey_operation { 27 kernel_pkey_encrypt, 28 kernel_pkey_decrypt, 29 kernel_pkey_sign, 30 kernel_pkey_verify, 31 }; 32 33 struct kernel_pkey_params { 34 struct key *key; 35 const char *encoding; /* Encoding (eg. "oaep" or "raw" for none) */ 36 const char *hash_algo; /* Digest algorithm used (eg. "sha1") or NULL if N/A */ 37 char *info; /* Modified info string to be released later */ 38 __u32 in_len; /* Input data size */ 39 union { 40 __u32 out_len; /* Output buffer size (enc/dec/sign) */ 41 __u32 in2_len; /* 2nd input data size (verify) */ 42 }; 43 enum kernel_pkey_operation op : 8; 44 }; 45 46 #endif /* __LINUX_KEYCTL_H */ 47