1/*
2 * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef OPENSSL_KDF_H
11# define OPENSSL_KDF_H
12# pragma once
13
14# include <openssl/macros.h>
15# ifndef OPENSSL_NO_DEPRECATED_3_0
16# define HEADER_KDF_H
17# endif
18
19# include <stdarg.h>
20# include <stddef.h>
21# include <openssl/types.h>
22# include <openssl/core.h>
23
24# ifdef __cplusplus
25extern "C" {
26# endif
27
28int EVP_KDF_up_ref(EVP_KDF *kdf);
29void EVP_KDF_free(EVP_KDF *kdf);
30EVP_KDF *EVP_KDF_fetch(OSSL_LIB_CTX *libctx, const char *algorithm,
31 const char *properties);
32
33EVP_KDF_CTX *EVP_KDF_CTX_new(EVP_KDF *kdf);
34void EVP_KDF_CTX_free(EVP_KDF_CTX *ctx);
35EVP_KDF_CTX *EVP_KDF_CTX_dup(const EVP_KDF_CTX *src);
36const char *EVP_KDF_get0_description(const EVP_KDF *kdf);
37int EVP_KDF_is_a(const EVP_KDF *kdf, const char *name);
38const char *EVP_KDF_get0_name(const EVP_KDF *kdf);
39const OSSL_PROVIDER *EVP_KDF_get0_provider(const EVP_KDF *kdf);
40const EVP_KDF *EVP_KDF_CTX_kdf(EVP_KDF_CTX *ctx);
41
42void EVP_KDF_CTX_reset(EVP_KDF_CTX *ctx);
43size_t EVP_KDF_CTX_get_kdf_size(EVP_KDF_CTX *ctx);
44int EVP_KDF_derive(EVP_KDF_CTX *ctx, unsigned char *key, size_t keylen,
45 const OSSL_PARAM params[]);
46int EVP_KDF_get_params(EVP_KDF *kdf, OSSL_PARAM params[]);
47int EVP_KDF_CTX_get_params(EVP_KDF_CTX *ctx, OSSL_PARAM params[]);
48int EVP_KDF_CTX_set_params(EVP_KDF_CTX *ctx, const OSSL_PARAM params[]);
49const OSSL_PARAM *EVP_KDF_gettable_params(const EVP_KDF *kdf);
50const OSSL_PARAM *EVP_KDF_gettable_ctx_params(const EVP_KDF *kdf);
51const OSSL_PARAM *EVP_KDF_settable_ctx_params(const EVP_KDF *kdf);
52const OSSL_PARAM *EVP_KDF_CTX_gettable_params(EVP_KDF_CTX *ctx);
53const OSSL_PARAM *EVP_KDF_CTX_settable_params(EVP_KDF_CTX *ctx);
54
55void EVP_KDF_do_all_provided(OSSL_LIB_CTX *libctx,
56 void (*fn)(EVP_KDF *kdf, void *arg),
57 void *arg);
58int EVP_KDF_names_do_all(const EVP_KDF *kdf,
59 void (*fn)(const char *name, void *data),
60 void *data);
61
62# define EVP_KDF_HKDF_MODE_EXTRACT_AND_EXPAND 0
63# define EVP_KDF_HKDF_MODE_EXTRACT_ONLY 1
64# define EVP_KDF_HKDF_MODE_EXPAND_ONLY 2
65
66#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_CLI_TO_SRV 65
67#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_SRV_TO_CLI 66
68#define EVP_KDF_SSHKDF_TYPE_ENCRYPTION_KEY_CLI_TO_SRV 67
69#define EVP_KDF_SSHKDF_TYPE_ENCRYPTION_KEY_SRV_TO_CLI 68
70#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_CLI_TO_SRV 69
71#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_SRV_TO_CLI 70
72
73/**** The legacy PKEY-based KDF API follows. ****/
74
75# define EVP_PKEY_CTRL_TLS_MD (EVP_PKEY_ALG_CTRL)
76# define EVP_PKEY_CTRL_TLS_SECRET (EVP_PKEY_ALG_CTRL + 1)
77# define EVP_PKEY_CTRL_TLS_SEED (EVP_PKEY_ALG_CTRL + 2)
78# define EVP_PKEY_CTRL_HKDF_MD (EVP_PKEY_ALG_CTRL + 3)
79# define EVP_PKEY_CTRL_HKDF_SALT (EVP_PKEY_ALG_CTRL + 4)
80# define EVP_PKEY_CTRL_HKDF_KEY (EVP_PKEY_ALG_CTRL + 5)
81# define EVP_PKEY_CTRL_HKDF_INFO (EVP_PKEY_ALG_CTRL + 6)
82# define EVP_PKEY_CTRL_HKDF_MODE (EVP_PKEY_ALG_CTRL + 7)
83# define EVP_PKEY_CTRL_PASS (EVP_PKEY_ALG_CTRL + 8)
84# define EVP_PKEY_CTRL_SCRYPT_SALT (EVP_PKEY_ALG_CTRL + 9)
85# define EVP_PKEY_CTRL_SCRYPT_N (EVP_PKEY_ALG_CTRL + 10)
86# define EVP_PKEY_CTRL_SCRYPT_R (EVP_PKEY_ALG_CTRL + 11)
87# define EVP_PKEY_CTRL_SCRYPT_P (EVP_PKEY_ALG_CTRL + 12)
88# define EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES (EVP_PKEY_ALG_CTRL + 13)
89
90# define EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND \
91 EVP_KDF_HKDF_MODE_EXTRACT_AND_EXPAND
92# define EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY \
93 EVP_KDF_HKDF_MODE_EXTRACT_ONLY
94# define EVP_PKEY_HKDEF_MODE_EXPAND_ONLY \
95 EVP_KDF_HKDF_MODE_EXPAND_ONLY
96
97int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
98
99int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *pctx,
100 const unsigned char *sec, int seclen);
101
102int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *pctx,
103 const unsigned char *seed, int seedlen);
104
105int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md);
106
107int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
108 const unsigned char *salt, int saltlen);
109
110int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
111 const unsigned char *key, int keylen);
112
113int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
114 const unsigned char *info, int infolen);
115
116int EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX *ctx, int mode);
117# define EVP_PKEY_CTX_hkdf_mode EVP_PKEY_CTX_set_hkdf_mode
118
119int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
120 int passlen);
121
122int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
123 const unsigned char *salt, int saltlen);
124
125int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n);
126
127int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r);
128
129int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p);
130
131int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
132 uint64_t maxmem_bytes);
133
134
135# ifdef __cplusplus
136}
137# endif
138#endif
139

source code of include/openssl/kdf.h