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/* Copyright (c) 2014-2019, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#ifndef TORCERT_H_INCLUDED
#define TORCERT_H_INCLUDED
#include "lib/crypt_ops/crypto_ed25519.h"
#define SIGNED_KEY_TYPE_ED25519 0x01
#define CERT_TYPE_ID_SIGNING 0x04
#define CERT_TYPE_SIGNING_LINK 0x05
#define CERT_TYPE_SIGNING_AUTH 0x06
#define CERT_TYPE_SIGNING_HS_DESC 0x08
#define CERT_TYPE_AUTH_HS_IP_KEY 0x09
#define CERT_TYPE_ONION_ID 0x0A
#define CERT_TYPE_CROSS_HS_IP_KEYS 0x0B
#define CERT_FLAG_INCLUDE_SIGNING_KEY 0x1
/** An ed25519-signed certificate as used throughout the Tor protocol.
**/
typedef struct tor_cert_st {
/** The key authenticated by this certificate */
ed25519_public_key_t signed_key;
/** The key that signed this certificate. This value may be unset if the
* certificate has never been checked, and didn't include its own key. */
ed25519_public_key_t signing_key;
/** A time after which this certificate will no longer be valid. */
time_t valid_until;
/** The encoded representation of this certificate */
uint8_t *encoded;
/** The length of <b>encoded</b> */
size_t encoded_len;
/** One of CERT_TYPE_... */
uint8_t cert_type;
/** True iff we received a signing key embedded in this certificate */
unsigned signing_key_included : 1;
/** True iff we checked the signature and found it bad */
unsigned sig_bad : 1;
/** True iff we checked the signature and found it correct */
unsigned sig_ok : 1;
/** True iff we checked the signature and first found that the cert
* had expired */
unsigned cert_expired : 1;
/** True iff we checked the signature and found the whole cert valid */
unsigned cert_valid : 1;
} tor_cert_t;
struct tor_tls_t;
tor_cert_t *tor_cert_create(const ed25519_keypair_t *signing_key,
uint8_t cert_type,
const ed25519_public_key_t *signed_key,
time_t now, time_t lifetime,
uint32_t flags);
tor_cert_t *tor_cert_parse(const uint8_t *cert, size_t certlen);
void tor_cert_free_(tor_cert_t *cert);
#define tor_cert_free(cert) FREE_AND_NULL(tor_cert_t, tor_cert_free_, (cert))
int tor_cert_get_checkable_sig(ed25519_checkable_t *checkable_out,
const tor_cert_t *out,
const ed25519_public_key_t *pubkey,
time_t *expiration_out);
int tor_cert_checksig(tor_cert_t *cert,
const ed25519_public_key_t *pubkey, time_t now);
const char *tor_cert_describe_signature_status(const tor_cert_t *cert);
tor_cert_t *tor_cert_dup(const tor_cert_t *cert);
int tor_cert_eq(const tor_cert_t *cert1, const tor_cert_t *cert2);
int tor_cert_opt_eq(const tor_cert_t *cert1, const tor_cert_t *cert2);
ssize_t tor_make_rsa_ed25519_crosscert(const ed25519_public_key_t *ed_key,
const crypto_pk_t *rsa_key,
time_t expires,
uint8_t **cert);
MOCK_DECL(int,
rsa_ed25519_crosscert_check, (const uint8_t *crosscert,
const size_t crosscert_len,
const crypto_pk_t *rsa_id_key,
const ed25519_public_key_t *master_key,
const time_t reject_if_expired_before));
or_handshake_certs_t *or_handshake_certs_new(void);
void or_handshake_certs_free_(or_handshake_certs_t *certs);
#define or_handshake_certs_free(certs) \
FREE_AND_NULL(or_handshake_certs_t, or_handshake_certs_free_, (certs))
int or_handshake_certs_rsa_ok(int severity,
or_handshake_certs_t *certs,
struct tor_tls_t *tls,
time_t now);
int or_handshake_certs_ed25519_ok(int severity,
or_handshake_certs_t *certs,
struct tor_tls_t *tls,
time_t now);
void or_handshake_certs_check_both(int severity,
or_handshake_certs_t *certs,
struct tor_tls_t *tls,
time_t now,
const ed25519_public_key_t **ed_id_out,
const common_digests_t **rsa_id_out);
int tor_cert_encode_ed22519(const tor_cert_t *cert, char **cert_str_out);
MOCK_DECL(int, check_tap_onion_key_crosscert,(const uint8_t *crosscert,
int crosscert_len,
const crypto_pk_t *onion_pkey,
const ed25519_public_key_t *master_id_pkey,
const uint8_t *rsa_id_digest));
#endif /* !defined(TORCERT_H_INCLUDED) */
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