Crypt::OpenSSL::X509 - Perl extension to OpenSSL's X509 API.

  use Crypt::OpenSSL::X509;

  my $x509 = Crypt::OpenSSL::X509->new_from_file('cert.pem');

  print $x509->pubkey() . "\n";
  print $x509->subject() . "\n";
  print $x509->issuer() . "\n";
  print $x509->email() . "\n";
  print $x509->hash() . "\n";
  print $x509->notBefore() . "\n";
  print $x509->notAfter() . "\n";
  print $x509->modulus() . "\n";
  print $x509->exponent() . "\n";
  print $x509->fingerprint_sha1() . "\n";
  print $x509->fingerprint_md5() . "\n";
  print $x509->as_string(Crypt::OpenSSL::X509::FORMAT_TEXT) . "\n";

  my $x509 = Crypt::OpenSSL::X509->new_from_string(
    $der_encoded_data, Crypt::OpenSSL::X509::FORMAT_ASN1
  );

  # given a time offset of $seconds, will the certificate be valid?
  if ($x509->checkend($seconds)) {
    # cert is ok at $seconds offset
  } else {
    # cert is expired at $seconds offset
  }

  my $exts = $x509->extensions_by_oid();

  foreach my $oid (keys %$exts) {
    my $ext = $$exts{$oid};
    print $oid, " ", $ext->object()->name(), ": ", $ext->value(), "\n";
  }

  Crypt::OpenSSL::X509 - Perl extension to OpenSSL's X509 API.

  This implement a large majority of OpenSSL's useful X509 API.

  The email() method supports both certificates where the
  subject is of the form:
  "... CN=Firstname lastname/emailAddress=user@domain", and also
  certificates where there is a X509v3 Extension of the form
  "X509v3 Subject Alternative Name: email=user@domain".

None by default.

On request:

	FORMAT_UNDEF FORMAT_ASN1 FORMAT_TEXT FORMAT_PEM FORMAT_NETSCAPE
	FORMAT_PKCS12 FORMAT_SMIME FORMAT_ENGINE FORMAT_IISSGC

new ( )

Create a new X509 object.

new_from_string ( STRING [ FORMAT ] )

new_from_file ( FILENAME [ FORMAT ] )

Create a new X509 object from a string or file. FORMAT should be FORMAT_ASN1 or FORMAT_PEM.

subject

Subject name as a string.

issuer

Issuer name as a string.

serial

Serial number as a string.

hash

Subject name hash as a string.

notBefore

notBefore time as a string.

notAfter

notAfter time as a string.

email

Email address as a string.

version

Certificate version as a string.

sig_alg_name

Signature algorithm name as a string.

subject_name ( )

issuer_name ( )

Return a Name object for the subject or issuer name. Methods for handling Name objects are given below.

is_selfsigned ( )

Return Boolean value if subject and issuer name are the same.

as_string ( [ FORMAT ] )

Return the certificate as a string in the specified format. FORMAT can be one of FORMAT_PEM (the default), FORMAT_ASN1, or FORMAT_NETSCAPE.

modulus ( )

Return the modulus for an RSA public key as a string of hex digits. For DSA, return the public key. Other algorithms are not supported.

bit_length ( )

Return the length of the modulus as a number of bits.

fingerprint_md5 ( )

fingerprint_sha1 ( )

Return the specified message digest for the certificate.

checkend( OFFSET )

Given an offset in seconds, will the certificate be expired?

pubkey ( )

Return the RSA or DSA public key.

num_extensions ( )

Return the number of extensions in the certificate.

extension ( INDEX )

Return the Extension specified by the integer INDEX. Methods for handling Extension objects are given below.

extensions_by_oid ( ) =item extensions_by_name ( ) =item extensions_by_long_name ( )

Return a hash of Extensions indexed by OID or name.

has_extension_oid ( OID )

Return true if the certificate has the extension specified by OID.

critical ( )

Return a value indicating if the extension is critical or not. FIXME: the value is an ASN.1 BOOLEAN value.

object ( )

Return the ObjectID of the extension. Methods for handling ObjectID objects are given below.

value ( )

Return the value or data of the extension. FIXME: the value is returned as a string but may represent a complex object.

name ( )

Return the long name of the object as a string.

oid ( )

Return the numeric dot-seperated form of the object identifier as a string.

as_string ( )

Return a string representation of the Name

entries ( )

Return an array of Name_Entry objects. Methods for handling Name_Entry objects are given below.

has_entry ( TYPE [ LASTPOS ] )

has_long_entry ( TYPE [ LASTPOS ] )

has_oid_entry ( TYPE [ LASTPOS ] )

Return true if a name has an entry of the specified TYPE. Depending on the function the TYPE may be in the short form (e.g. CN), long form (commonName) or OID (2.5.4.3). If LASTPOS is specified then the search is made from that index rather than from the start.

get_index_by_type ( TYPE [ LASTPOS ] )

get_index_by_long_type ( TYPE [ LASTPOS ] )

get_index_by_oid_type ( TYPE [ LASTPOS ] )

Return the index of an entry of the specified TYPE in a name. Depending on the function the TYPE may be in the short form (e.g. CN), long form (commonName) or OID (2.5.4.3). If LASTPOS is specified then the search is made from that index rather than from the start.

get_entry_by_type ( TYPE [ LASTPOS ] )

get_entry_by_long_type ( TYPE [ LASTPOS ] )

These methods work similarly to get_index_by_* but return the Name_Entry rather than the index.

as_string ( [ LONG ] )

Return a string representation of the Name_Entry of the form typeName=Value. If LONG is 1, the long form of the type is used.

type ( [ LONG ] )

Return a string representation of the type of the Name_Entry. If LONG is 1, the long form of the type is used.

value ( )

Return a string representation of the value of the Name_Entry.

is_printableString ( )

is_ia5string ( )

is_utf8string ( )

is_asn1_type ( [ASN1_TYPE] )

Return true if the Name_Entry value is of the specified type. The value of ASN1_TYPE should be as listed in OpenSSL's asn1.h.

OpenSSL(1), Crypt::OpenSSL::RSA, Crypt::OpenSSL::Bignum

Dan Sully, <daniel@cpan.org>

David O'Callaghan, <david.ocallaghan@cs.tcd.ie> Daniel Kahn Gillmor <dkg@fifthhorseman.net>

Copyright 2004-2011 by Dan Sully

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.