encryption - Error Initializing OpenSSL module in perl -


hi newbie perl. how create pkcs7 signature in perl .any example code helpful. tried use openca::openssl. got error initializing openca::openssl instance. in advance....... code

$openssl = openca::openssl->new(path=>'/usr/bin/openssl'); $crl=$openssl->issuecrl(        cakey=>'passbook/key.pem',        cacert=>'passbook/certificate.pem',        passwd=>'somepass',        outfile=>'passbook/signature',        outform=>'der', );

the error message got 

use of uninitialized value $initial_skip in concatenation (.) or string @ /usr/local/share/perl/5.14.2/parse/recdescent.pm line 3054."


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