50 lines
1.4 KiB
Text
50 lines
1.4 KiB
Text
=pod
|
|
|
|
=head1 NAME
|
|
|
|
X509_verify_cert - discover and verify X509 certificate chain
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/x509.h>
|
|
|
|
int X509_verify_cert(X509_STORE_CTX *ctx);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The X509_verify_cert() function attempts to discover and validate a
|
|
certificate chain based on parameters in B<ctx>. A complete description of
|
|
the process is contained in the L<verify(1)> manual page.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
If a complete chain can be built and validated this function returns 1,
|
|
otherwise it return zero, in exceptional circumstances it can also
|
|
return a negative code.
|
|
|
|
If the function fails additional error information can be obtained by
|
|
examining B<ctx> using, for example X509_STORE_CTX_get_error().
|
|
|
|
=head1 NOTES
|
|
|
|
Applications rarely call this function directly but it is used by
|
|
OpenSSL internally for certificate validation, in both the S/MIME and
|
|
SSL/TLS code.
|
|
|
|
The negative return value from X509_verify_cert() can only occur if no
|
|
certificate is set in B<ctx> (due to a programming error); if X509_verify_cert()
|
|
twice without reinitialising B<ctx> in between; or if a retry
|
|
operation is requested during internal lookups (which never happens with
|
|
standard lookup methods). It is however recommended that application check
|
|
for <= 0 return value on error.
|
|
|
|
=head1 BUGS
|
|
|
|
This function uses the header B<x509.h> as opposed to most chain verification
|
|
functions which use B<x509_vfy.h>.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<X509_STORE_CTX_get_error(3)>
|
|
|
|
=cut
|