.ad l
.TH ldns 3 "30 May 2006"
.SH NAME
ldns_dane_verify, ldns_dane_verify_rr \- TLSA RR verification functions

.SH SYNOPSIS
#include <stdint.h>
.br
#include <stdbool.h>
.br
.PP
#include <ldns/ldns.h>
.PP
ldns_status ldns_dane_verify(const ldns_rr_list* tlsas, X509* cert, STACK_OF(X509)* extra_certs, X509_STORE* pkix_validation_store);
.PP
ldns_status ldns_dane_verify_rr(const ldns_rr* tlsa_rr, X509* cert, STACK_OF(X509)* extra_certs, X509_STORE* pkix_validation_store);
.PP

.SH DESCRIPTION
.HP
\fIldns_dane_verify\fR()
\%BEWARE!  We strongly recommend to use OpenSSL 1.1.0 dane verification
functions instead of the ones provided by ldns.  When OpenSSL 1.1.0 was
available ldns will use the OpenSSL 1.1.0 dane verification functions
under the hood.  When ldns was linked with OpenSSL < 1.1.0, this function
will not be able to verify \%TLSA records with \%DANE-\%TA usage types.

\%BEWARE! The ldns dane verification functions do *not* do server name
checks.  The user has to perform additional server name checks themselves!

Verify if any of the given \%TLSA resource records matches the given
certificate.

\.br
\fBtlsas\fR: The resource records that specify what and how to
match the certificate. One must match for this function
to succeed. With tlsas == \%NULL or the number of \%TLSA records
in tlsas == 0, regular \%PKIX validation is performed.
\.br
\fBcert\fR: The certificate to match (and validate)
\.br
\fBextra_certs\fR: Intermediate certificates that might be necessary
creating the validation chain.
\.br
\fBpkix_validation_store\fR: Used when the certificate usage is 
"\%CA constraint" or "Service Certificate Constraint" to 
validate the certificate.

\.br
Returns \%LDNS_STATUS_OK on success,
LDNS_STATUS_DANE_NEED_OPENSSL_GE_1_1_FOR_DANE_TA when at least one
of the \%TLSA's had usage type \%DANE-\%TA and none of the \%TLSA's matched
or \%PKIX validated,
\%LDNS_STATUS_DANE_PKIX_DID_NOT_VALIDATE when one of the \%TLSA's
matched but the \%PKIX validation failed,
\%LDNS_STATUS_DANE_TLSA_DID_NOT_MATCH when none of the \%TLSA's matched,
or other ldns_status errors.
.PP
.HP
\fIldns_dane_verify_rr\fR()
\%BEWARE!  We strongly recommend to use OpenSSL 1.1.0 dane verification
functions instead of the ones provided by ldns.  When OpenSSL 1.1.0 was
available ldns will use the OpenSSL 1.1.0 dane verification functions
under the hood.  When ldns was linked with OpenSSL < 1.1.0, this function
will not be able to verify \%TLSA records with \%DANE-\%TA usage types.

\%BEWARE! The ldns dane verification functions do *not* do server name
checks.  The user has to perform additional server name checks themselves!

Verify if the given \%TLSA resource record matches the given certificate.
Reporting on a \%TLSA rr mismatch (\%LDNS_STATUS_DANE_TLSA_DID_NOT_MATCH)
is preferred over \%PKIX failure  (\%LDNS_STATUS_DANE_PKIX_DID_NOT_VALIDATE).
So when \%PKIX validation is required by the \%TLSA Certificate usage,
but the \%TLSA data does not match, \%LDNS_STATUS_DANE_TLSA_DID_NOT_MATCH
is returned whether the \%PKIX validated or not.

When ldns is linked with OpenSSL < 1.1.0 and this function is available,
then the \%DANE-\%TA usage type will not be verified, and on a tlsa_rr with
this usage type,
LDNS_STATUS_DANE_NEED_OPENSSL_GE_1_1_FOR_DANE_TA will be returned.

\.br
\fBtlsa_rr\fR: The resource record that specifies what and how to
match the certificate. With tlsa_rr == \%NULL, regular \%PKIX
validation is performed.
\.br
\fBcert\fR: The certificate to match (and validate)
\.br
\fBextra_certs\fR: Intermediate certificates that might be necessary
creating the validation chain.
\.br
\fBpkix_validation_store\fR: Used when the certificate usage is 
"\%CA constraint" or "Service Certificate Constraint" to 
validate the certificate.

\.br
Returns \%LDNS_STATUS_OK on success,
LDNS_STATUS_DANE_NEED_OPENSSL_GE_1_1_FOR_DANE_TA when the
provided \%TLSA had the \%DANE-\%TA usage type,
\%LDNS_STATUS_DANE_TLSA_DID_NOT_MATCH on \%TLSA data mismatch,
\%LDNS_STATUS_DANE_PKIX_DID_NOT_VALIDATE when \%TLSA matched,
but the \%PKIX validation failed, or other ldns_status errors.
.PP
.SH AUTHOR
The ldns team at NLnet Labs.

.SH REPORTING BUGS
Please report bugs to ldns-team@nlnetlabs.nl or in 
our bugzilla at
http://www.nlnetlabs.nl/bugs/index.html

.SH COPYRIGHT
Copyright (c) 2004 - 2006 NLnet Labs.
.PP
Licensed under the BSD License. There is NO warranty; not even for
MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.

.SH SEE ALSO
\fIldns_dane_create_tlsa_owner\fR, \fIldns_dane_cert2rdf\fR, \fIldns_dane_select_certificate\fR, \fIldns_dane_create_tlsa_rr\fR.
And \fBperldoc Net::DNS\fR, \fBRFC1034\fR,
\fBRFC1035\fR, \fBRFC4033\fR, \fBRFC4034\fR  and \fBRFC4035\fR.
.SH REMARKS
This manpage was automatically generated from the ldns source code.