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Elena Petrova
77ebdabe8d
Extend the user-space RNG interface: 1. Add entropy input via ALG_SET_DRBG_ENTROPY setsockopt option; 2. Add additional data input via sendmsg syscall. This allows DRBG to be tested with test vectors, for example for the purpose of CAVP testing, which otherwise isn't possible. To prevent erroneous use of entropy input, it is hidden under CRYPTO_USER_API_RNG_CAVP config option and requires CAP_SYS_ADMIN to succeed. Signed-off-by: Elena Petrova <[email protected]> Acked-by: Stephan Müller <[email protected]> Reviewed-by: Eric Biggers <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
45 lines
978 B
C
45 lines
978 B
C
/* 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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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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