mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-12-06 19:41:15 +01:00
Nick Mathewson
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* Copyright (c) 2001, Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2019, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* \file crypto_dh.h
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*
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* \brief Headers for crypto_dh.c
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**/
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#ifndef TOR_CRYPTO_DH_H
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#define TOR_CRYPTO_DH_H
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#include "orconfig.h"
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#include "lib/cc/torint.h"
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#include "lib/defs/dh_sizes.h"
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typedef struct crypto_dh_t crypto_dh_t;
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extern const unsigned DH_GENERATOR;
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extern const char TLS_DH_PRIME[];
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extern const char OAKLEY_PRIME_2[];
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/* Key negotiation */
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#define DH_TYPE_CIRCUIT 1
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#define DH_TYPE_REND 2
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#define DH_TYPE_TLS 3
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void crypto_dh_init(void);
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crypto_dh_t *crypto_dh_new(int dh_type);
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crypto_dh_t *crypto_dh_dup(const crypto_dh_t *dh);
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int crypto_dh_get_bytes(crypto_dh_t *dh);
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int crypto_dh_generate_public(crypto_dh_t *dh);
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int crypto_dh_get_public(crypto_dh_t *dh, char *pubkey_out,
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size_t pubkey_out_len);
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ssize_t crypto_dh_compute_secret(int severity, crypto_dh_t *dh,
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const char *pubkey, size_t pubkey_len,
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char *secret_out, size_t secret_out_len);
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void crypto_dh_free_(crypto_dh_t *dh);
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#define crypto_dh_free(dh) FREE_AND_NULL(crypto_dh_t, crypto_dh_free_, (dh))
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ssize_t crypto_dh_handshake(int severity, crypto_dh_t *dh,
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const char *pubkey, size_t pubkey_len,
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unsigned char *secret_out,
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size_t secret_bytes_out);
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void crypto_dh_free_all(void);
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/* Prototypes for private functions only used by tortls.c, crypto.c, and the
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* unit tests. */
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struct dh_st;
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struct dh_st *crypto_dh_new_openssl_tls(void);
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#ifdef ENABLE_OPENSSL
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void crypto_dh_init_openssl(void);
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void crypto_dh_free_all_openssl(void);
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#endif
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#ifdef ENABLE_NSS
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void crypto_dh_init_nss(void);
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void crypto_dh_free_all_nss(void);
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#endif
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#endif /* !defined(TOR_CRYPTO_DH_H) */
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