Hello, I'm a newby on encryption.
For the payment method iDeal (Dutch) I need to do some encryption steps:
1. SHA encryption to create a 160 bits digest
2. RSA encryption of the digest using the private key (1024 bits)
3. base64 encoding of the step 3 resulting in a 172 char signature.

Has someone an example of these steps?

My actions so far:
- I've generated a private key.
- SHA encryption of a string works

use strict;
use MIME::Base64 ();
use Digest::SHA1 qw(sha1 sha1_hex sha1_base64);
use Crypt::OpenSSL::RSA;

my $string = "0021232117891234AcquirerStatusRes2004-11-02T15:05:03.750
+ZSuccess";

#SHA encryption
my $ctx = Digest::SHA1->new;
$ctx->add($string);
my $digest = $ctx->digest;
my $len = length($digest);
print ("SHA-1 DIGEST:$digest.. ($len)\n\n");


#RSA-encryption over the digest
?????

#Base64 encoding:
my $encoded = MIME::Base64::encode($digest);
my $len1 = length($encoded);
print ("ENCODE:$encoded ($len1)\n\n");

The result has to be (172 chars):
db82/jpJRvKQKoiDvu33X0yoDAQpayJOaW2Y8zbR1qk1i3epvTXi+6g+QVBY93YzGv4w+V
+a+vL3uNmzyRjYsm2309d1CWFVsn5Mk24NLSvhYfwVHEpznyMqizALEVUNSoiSHRkZUDfX
+owBAyLT/tQVGbuUuBj+TkblY826nRa7U=

[download]

I don't know how to do this!

Please help,

Eric

In reply to RSA encryption for (Ducth) iDeal payment by Eric66

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