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