PHP和电子邮件数字签名问题

Question

I try to digitally sign my emails with php, but I have some problems with it. I have generated certificate signed with my own CA with open ssl :

openssl req -new -nodes -out request.pem -keyout key.pem -days 1098 -config ./openssl.cnf
openssl ca -in request.pem -out cert.pem -config ./openssl.cnf

I have generated private key key.pem a signed certificate 04.pem In doc root of apache I have file podepsany_email.php and cert + key next to it.

for digital signing I use function openssl_pkcs7_sign(). Code :

openssl_pkcs7_sign("./msg.txt", "./signed.txt", "./04.pem" ,"./key.pem", $headers);

The result of call my script is error message :

Warning: openssl_pkcs7_sign() [function.openssl-pkcs7-sign]: error getting private key in C:\\data\\www\\podepsany_email.php on line 70

Could please someone give me point how to solve this issue? Thanks

K.

Answer 1

see the php documentation discussion: http://php.net/manual/en/function.openssl-pkcs7-sign.php

you should put "file://" in front of the .pem file names