mirror of https://github.com/openssl/openssl
100 lines
3.0 KiB
Plaintext
100 lines
3.0 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
SSL_add_expected_rpk,
|
|
SSL_get_negotiated_client_cert_type,
|
|
SSL_get_negotiated_server_cert_type,
|
|
SSL_get0_peer_rpk,
|
|
SSL_SESSION_get0_peer_rpk - raw public key (RFC7250) support
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/ssl.h>
|
|
|
|
int SSL_add_expected_rpk(SSL *s, EVP_PKEY *rpk);
|
|
int SSL_get_negotiated_client_cert_type(const SSL *s);
|
|
int SSL_get_negotiated_server_cert_type(const SSL *s);
|
|
EVP_PKEY *SSL_get0_peer_rpk(const SSL *s);
|
|
EVP_PKEY *SSL_SESSION_get0_peer_rpk(const SSL_SESSION *ss);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
SSL_add_expected_rpk() adds a DANE TLSA record matching public key B<rpk>
|
|
to SSL B<s>'s DANE validation policy.
|
|
|
|
SSL_get_negotiated_client_cert_type() returns the connection's negotiated
|
|
client certificate type.
|
|
|
|
SSL_get_negotiated_server_cert_type() returns the connection's negotiated
|
|
server certificate type.
|
|
|
|
SSL_get0_peer_rpk() returns the peer's raw public key from SSL B<s>.
|
|
|
|
SSL_SESSION_get0_peer_rpk() returns the peer's raw public key from
|
|
SSL_SESSION B<ss>.
|
|
|
|
=head1 NOTES
|
|
|
|
Raw public keys are used in place of certificates when the option is
|
|
negotiated.
|
|
B<SSL_add_expected_rpk()> may be called multiple times to configure
|
|
multiple trusted keys, this makes it possible to allow for key rotation,
|
|
where a peer might be expected to offer an "old" or "new" key and the
|
|
endpoint must be able to accept either one.
|
|
|
|
When raw public keys are used, the certificate verify callback is called, and
|
|
may be used to inspect the public key via X509_STORE_CTX_get0_rpk(3).
|
|
Raw public keys have no subject, issuer, validity dates nor digital signature
|
|
to verify. They can, however, be matched verbatim or by their digest value, this
|
|
is done by specifying one or more TLSA records, see L<SSL_CTX_dane_enable(3)>.
|
|
|
|
The raw public key is typically taken from the certificate assigned to the
|
|
connection (e.g. via L<SSL_use_certificate(3)>), but if a certificate is not
|
|
configured, then the public key will be extracted from the assigned
|
|
private key.
|
|
|
|
The SSL_add_expected_rpk() function is a wrapper around
|
|
L<SSL_dane_tlsa_add(3)>.
|
|
When DANE is enabled via L<SSL_dane_enable(3)>, the configured TLSA records
|
|
will be used to validate the peer's public key or certificate.
|
|
If DANE is not enabled, then no validation will occur.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
SSL_add_expected_rpk() returns 1 on success and 0 on failure.
|
|
|
|
SSL_get0_peer_rpk() and SSL_SESSION_get0_peer_rpk() return the peer's raw
|
|
public key as an EVP_PKEY or NULL when the raw public key is not available.
|
|
|
|
SSL_get_negotiated_client_cert_type() and SSL_get_negotiated_server_cert_type()
|
|
return one of the following values:
|
|
|
|
=over 4
|
|
|
|
=item TLSEXT_cert_type_x509
|
|
|
|
=item TLSEXT_cert_type_rpk
|
|
|
|
=back
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<SSL_CTX_dane_enable(3)>,
|
|
L<SSL_CTX_set_options(3)>,
|
|
L<SSL_dane_enable(3)>,
|
|
L<SSL_get_verify_result(3)>,
|
|
L<SSL_set_verify(3)>,
|
|
L<SSL_use_certificate(3)>,
|
|
L<X509_STORE_CTX_get0_rpk(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
These functions were added in OpenSSL 3.2.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
=cut
|