diff options
Diffstat (limited to 'include/crypto/dh.h')
| -rw-r--r-- | include/crypto/dh.h | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/include/crypto/dh.h b/include/crypto/dh.h index f638998fb6d0..7b863e911cb4 100644 --- a/include/crypto/dh.h +++ b/include/crypto/dh.h @@ -1,14 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Diffie-Hellman secret to be used with kpp API along with helper functions * * Copyright (c) 2016, Intel Corporation * Authors: Salvatore Benedetto <salvatore.benedetto@intel.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * */ #ifndef _CRYPTO_DH_ #define _CRYPTO_DH_ @@ -35,9 +30,9 @@ * @g_size: Size of DH generator G */ struct dh { - void *key; - void *p; - void *g; + const void *key; + const void *p; + const void *g; unsigned int key_size; unsigned int p_size; unsigned int g_size; @@ -53,7 +48,7 @@ struct dh { * * Return: size of the key in bytes */ -int crypto_dh_key_len(const struct dh *params); +unsigned int crypto_dh_key_len(const struct dh *params); /** * crypto_dh_encode_key() - encode the private key @@ -84,4 +79,20 @@ int crypto_dh_encode_key(char *buf, unsigned int len, const struct dh *params); */ int crypto_dh_decode_key(const char *buf, unsigned int len, struct dh *params); +/** + * __crypto_dh_decode_key() - decode a private key without parameter checks + * @buf: Buffer holding a packet key that should be decoded + * @len: Length of the packet private key buffer + * @params: Buffer allocated by the caller that is filled with the + * unpacked DH private key. + * + * Internal function providing the same services as the exported + * crypto_dh_decode_key(), but without any of those basic parameter + * checks conducted by the latter. + * + * Return: -EINVAL if buffer has insufficient size, 0 on success + */ +int __crypto_dh_decode_key(const char *buf, unsigned int len, + struct dh *params); + #endif |