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60 lines
1.5 KiB
60 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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/* |
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* if_alg: User-space algorithm interface |
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* |
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* Copyright (c) 2010 Herbert Xu <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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*/ |
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#ifndef _LINUX_IF_ALG_H |
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#define _LINUX_IF_ALG_H |
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#include <linux/types.h> |
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struct sockaddr_alg { |
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__u16 salg_family; |
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__u8 salg_type[14]; |
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__u32 salg_feat; |
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__u32 salg_mask; |
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__u8 salg_name[64]; |
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}; |
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/* |
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* Linux v4.12 and later removed the 64-byte limit on salg_name[]; it's now an |
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* arbitrary-length field. We had to keep the original struct above for source |
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* compatibility with existing userspace programs, though. Use the new struct |
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* below if support for very long algorithm names is needed. To do this, |
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* allocate 'sizeof(struct sockaddr_alg_new) + strlen(algname) + 1' bytes, and |
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* copy algname (including the null terminator) into salg_name. |
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*/ |
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struct sockaddr_alg_new { |
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__u16 salg_family; |
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__u8 salg_type[14]; |
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__u32 salg_feat; |
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__u32 salg_mask; |
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__u8 salg_name[]; |
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}; |
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struct af_alg_iv { |
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__u32 ivlen; |
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__u8 iv[0]; |
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}; |
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/* Socket options */ |
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#define ALG_SET_KEY 1 |
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#define ALG_SET_IV 2 |
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#define ALG_SET_OP 3 |
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#define ALG_SET_AEAD_ASSOCLEN 4 |
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#define ALG_SET_AEAD_AUTHSIZE 5 |
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#define ALG_SET_DRBG_ENTROPY 6 |
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/* Operations */ |
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#define ALG_OP_DECRYPT 0 |
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#define ALG_OP_ENCRYPT 1 |
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#endif /* _LINUX_IF_ALG_H */
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