freebsd-dev/crypto/openssh/dh.h
Ed Maste 19261079b7 openssh: update to OpenSSH v8.7p1
Some notable changes, from upstream's release notes:

- sshd(8): Remove support for obsolete "host/port" syntax.
- ssh(1): When prompting whether to record a new host key, accept the key
  fingerprint as a synonym for "yes".
- ssh-keygen(1): when acting as a CA and signing certificates with an RSA
  key, default to using the rsa-sha2-512 signature algorithm.
- ssh(1), sshd(8), ssh-keygen(1): this release removes the "ssh-rsa"
  (RSA/SHA1) algorithm from those accepted for certificate signatures.
- ssh-sk-helper(8): this is a new binary. It is used by the FIDO/U2F
  support to provide address-space isolation for token middleware
  libraries (including the internal one).
- ssh(1): this release enables UpdateHostkeys by default subject to some
  conservative preconditions.
- scp(1): this release changes the behaviour of remote to remote copies
  (e.g. "scp host-a:/path host-b:") to transfer through the local host
  by default.
- scp(1): experimental support for transfers using the SFTP protocol as
  a replacement for the venerable SCP/RCP protocol that it has
  traditionally used.

Additional integration work is needed to support FIDO/U2F in the base
system.

Deprecation Notice
------------------

OpenSSH will disable the ssh-rsa signature scheme by default in the
next release.

Reviewed by:	imp
MFC after:	1 month
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D29985
2021-09-07 21:05:51 -04:00

85 lines
2.7 KiB
C

/* $OpenBSD: dh.h,v 1.19 2021/03/12 04:08:19 dtucker Exp $ */
/*
* Copyright (c) 2000 Niels Provos. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DH_H
#define DH_H
#ifdef WITH_OPENSSL
struct dhgroup {
int size;
BIGNUM *g;
BIGNUM *p;
};
DH *choose_dh(int, int, int);
DH *dh_new_group_asc(const char *, const char *);
DH *dh_new_group(BIGNUM *, BIGNUM *);
DH *dh_new_group1(void);
DH *dh_new_group14(void);
DH *dh_new_group16(void);
DH *dh_new_group18(void);
DH *dh_new_group_fallback(int);
int dh_gen_key(DH *, int);
int dh_pub_is_valid(const DH *, const BIGNUM *);
u_int dh_estimate(int);
void dh_set_moduli_file(const char *);
/*
* Max value from RFC4419.
* Min value from RFC8270.
*/
#define DH_GRP_MIN 2048
#define DH_GRP_MAX 8192
/*
* Values for "type" field of moduli(5)
* Specifies the internal structure of the prime modulus.
*/
#define MODULI_TYPE_UNKNOWN (0)
#define MODULI_TYPE_UNSTRUCTURED (1)
#define MODULI_TYPE_SAFE (2)
#define MODULI_TYPE_SCHNORR (3)
#define MODULI_TYPE_SOPHIE_GERMAIN (4)
#define MODULI_TYPE_STRONG (5)
/*
* Values for "tests" field of moduli(5)
* Specifies the methods used in checking for primality.
* Usually, more than one test is used.
*/
#define MODULI_TESTS_UNTESTED (0x00)
#define MODULI_TESTS_COMPOSITE (0x01)
#define MODULI_TESTS_SIEVE (0x02)
#define MODULI_TESTS_MILLER_RABIN (0x04)
#define MODULI_TESTS_JACOBI (0x08)
#define MODULI_TESTS_ELLIPTIC (0x10)
#endif /* WITH_OPENSSL */
#endif /* DH_H */