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Filename : kdf.h
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/*
 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef HEADER_KDF_H
# define HEADER_KDF_H

# include <openssl/ossl_typ.h>
# include <openssl/kdferr.h>
# ifdef __cplusplus
extern "C" {
# endif

# define EVP_KDF_PBKDF2     NID_id_pbkdf2
# define EVP_KDF_SCRYPT     NID_id_scrypt
# define EVP_KDF_TLS1_PRF   NID_tls1_prf
# define EVP_KDF_HKDF       NID_hkdf
# define EVP_KDF_SSHKDF     NID_sshkdf
# define EVP_KDF_KB         NID_kbkdf
# define EVP_KDF_KRB5KDF    NID_krb5kdf
# define EVP_KDF_SS         NID_sskdf

EVP_KDF_CTX *EVP_KDF_CTX_new_id(int id);
void EVP_KDF_CTX_free(EVP_KDF_CTX *ctx);

void EVP_KDF_reset(EVP_KDF_CTX *ctx);
int EVP_KDF_ctrl(EVP_KDF_CTX *ctx, int cmd, ...);
int EVP_KDF_vctrl(EVP_KDF_CTX *ctx, int cmd, va_list args);
int EVP_KDF_ctrl_str(EVP_KDF_CTX *ctx, const char *type, const char *value);
size_t EVP_KDF_size(EVP_KDF_CTX *ctx);
int EVP_KDF_derive(EVP_KDF_CTX *ctx, unsigned char *key, size_t keylen);


# define EVP_KDF_CTRL_SET_PASS          0x01 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_SALT          0x02 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_ITER          0x03 /* int */
# define EVP_KDF_CTRL_SET_MD            0x04 /* EVP_MD * */
# define EVP_KDF_CTRL_SET_KEY           0x05 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_MAXMEM_BYTES  0x06 /* uint64_t */
# define EVP_KDF_CTRL_SET_TLS_SECRET    0x07 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_RESET_TLS_SEED    0x08
# define EVP_KDF_CTRL_ADD_TLS_SEED      0x09 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_RESET_HKDF_INFO   0x0a
# define EVP_KDF_CTRL_ADD_HKDF_INFO     0x0b /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_HKDF_MODE     0x0c /* int */
# define EVP_KDF_CTRL_SET_SCRYPT_N      0x0d /* uint64_t */
# define EVP_KDF_CTRL_SET_SCRYPT_R      0x0e /* uint32_t */
# define EVP_KDF_CTRL_SET_SCRYPT_P      0x0f /* uint32_t */
# define EVP_KDF_CTRL_SET_SSHKDF_XCGHASH    0x10 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_SSHKDF_SESSION_ID 0x11 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_SSHKDF_TYPE       0x12 /* int */
# define EVP_KDF_CTRL_SET_KB_MODE       0x13 /* int */
# define EVP_KDF_CTRL_SET_KB_MAC_TYPE   0x14 /* int */
# define EVP_KDF_CTRL_SET_CIPHER        0x15 /* EVP_CIPHER * */
# define EVP_KDF_CTRL_SET_KB_INFO       0x16 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_KB_SEED       0x17 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_KRB5KDF_CONSTANT  0x18 /* unsigned char *, size_t */
# define EVP_KDF_CTRL_SET_SSKDF_INFO    0x19 /* unsigned char *, size_t */

# define EVP_KDF_HKDF_MODE_EXTRACT_AND_EXPAND  0
# define EVP_KDF_HKDF_MODE_EXTRACT_ONLY        1
# define EVP_KDF_HKDF_MODE_EXPAND_ONLY         2

#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_CLI_TO_SRV 65
#define EVP_KDF_SSHKDF_TYPE_INITIAL_IV_SRV_TO_CLI 66
#define EVP_KDF_SSHKDF_TYPE_ENCRYPTION_KEY_CLI_TO_SRV 67
#define EVP_KDF_SSHKDF_TYPE_ENCRYPTION_KEY_SRV_TO_CLI 68
#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_CLI_TO_SRV 69
#define EVP_KDF_SSHKDF_TYPE_INTEGRITY_KEY_SRV_TO_CLI 70

#define EVP_KDF_KB_MODE_COUNTER     0
#define EVP_KDF_KB_MODE_FEEDBACK    1

#define EVP_KDF_KB_MAC_TYPE_HMAC    0
#define EVP_KDF_KB_MAC_TYPE_CMAC    1

/**** The legacy PKEY-based KDF API follows. ****/

# define EVP_PKEY_CTRL_TLS_MD                   (EVP_PKEY_ALG_CTRL)
# define EVP_PKEY_CTRL_TLS_SECRET               (EVP_PKEY_ALG_CTRL + 1)
# define EVP_PKEY_CTRL_TLS_SEED                 (EVP_PKEY_ALG_CTRL + 2)
# define EVP_PKEY_CTRL_HKDF_MD                  (EVP_PKEY_ALG_CTRL + 3)
# define EVP_PKEY_CTRL_HKDF_SALT                (EVP_PKEY_ALG_CTRL + 4)
# define EVP_PKEY_CTRL_HKDF_KEY                 (EVP_PKEY_ALG_CTRL + 5)
# define EVP_PKEY_CTRL_HKDF_INFO                (EVP_PKEY_ALG_CTRL + 6)
# define EVP_PKEY_CTRL_HKDF_MODE                (EVP_PKEY_ALG_CTRL + 7)
# define EVP_PKEY_CTRL_PASS                     (EVP_PKEY_ALG_CTRL + 8)
# define EVP_PKEY_CTRL_SCRYPT_SALT              (EVP_PKEY_ALG_CTRL + 9)
# define EVP_PKEY_CTRL_SCRYPT_N                 (EVP_PKEY_ALG_CTRL + 10)
# define EVP_PKEY_CTRL_SCRYPT_R                 (EVP_PKEY_ALG_CTRL + 11)
# define EVP_PKEY_CTRL_SCRYPT_P                 (EVP_PKEY_ALG_CTRL + 12)
# define EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES      (EVP_PKEY_ALG_CTRL + 13)

# define EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND \
            EVP_KDF_HKDF_MODE_EXTRACT_AND_EXPAND
# define EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY       \
            EVP_KDF_HKDF_MODE_EXTRACT_ONLY
# define EVP_PKEY_HKDEF_MODE_EXPAND_ONLY        \
            EVP_KDF_HKDF_MODE_EXPAND_ONLY

# define EVP_PKEY_CTX_set_tls1_prf_md(pctx, md) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_TLS_MD, 0, (void *)(md))

# define EVP_PKEY_CTX_set1_tls1_prf_secret(pctx, sec, seclen) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_TLS_SECRET, seclen, (void *)(sec))

# define EVP_PKEY_CTX_add1_tls1_prf_seed(pctx, seed, seedlen) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_TLS_SEED, seedlen, (void *)(seed))

# define EVP_PKEY_CTX_set_hkdf_md(pctx, md) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_HKDF_MD, 0, (void *)(md))

# define EVP_PKEY_CTX_set1_hkdf_salt(pctx, salt, saltlen) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_HKDF_SALT, saltlen, (void *)(salt))

# define EVP_PKEY_CTX_set1_hkdf_key(pctx, key, keylen) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_HKDF_KEY, keylen, (void *)(key))

# define EVP_PKEY_CTX_add1_hkdf_info(pctx, info, infolen) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_HKDF_INFO, infolen, (void *)(info))

# define EVP_PKEY_CTX_hkdf_mode(pctx, mode) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                              EVP_PKEY_CTRL_HKDF_MODE, mode, NULL)

# define EVP_PKEY_CTX_set1_pbe_pass(pctx, pass, passlen) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                            EVP_PKEY_CTRL_PASS, passlen, (void *)(pass))

# define EVP_PKEY_CTX_set1_scrypt_salt(pctx, salt, saltlen) \
            EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
                            EVP_PKEY_CTRL_SCRYPT_SALT, saltlen, (void *)(salt))

# define EVP_PKEY_CTX_set_scrypt_N(pctx, n) \
            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
                            EVP_PKEY_CTRL_SCRYPT_N, n)

# define EVP_PKEY_CTX_set_scrypt_r(pctx, r) \
            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
                            EVP_PKEY_CTRL_SCRYPT_R, r)

# define EVP_PKEY_CTX_set_scrypt_p(pctx, p) \
            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
                            EVP_PKEY_CTRL_SCRYPT_P, p)

# define EVP_PKEY_CTX_set_scrypt_maxmem_bytes(pctx, maxmem_bytes) \
            EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
                            EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES, maxmem_bytes)


# ifdef __cplusplus
}
# endif
#endif