Hi,

The first encryption has to be SHA-1.
Using the prompt command 'openssl dgst -sha1'
gives a different result compared to the Digest::SHA1

'openssl dgst -sha-1' code results in:
$string:0021232117891234AcquirerStatusRes2004-11-02T15:05:03.750ZSuccess| (64 chars)
|$sha1:|SHA1(./ctx)= 0d1d60ffb10663e6d50cda8280015efb7b06154 | (54 chars)
'Digest::SHA1 results:
|$string:0021232117891234AcquirerStatusRes2004-11-02T15:05:03.750ZSuccess| (64 chars)
|Digest::SHA1: @ÑÖûf>mPͨ(ï·°aT| (20 chars)

The result had to be a 160 bits output. (160 bites is 20 chars)

In the iDeal manual (sorry but it's in Dutch) http://www.rabobank.nl/images/handleiding_ideal_professional_2966322.pdf (page 26) there is a part where a signature is made using the command:
echo "test" | openssl dgst -sha1 -verify cert.pem -signature test.sig
where cert.pem is my certificate and test.sig is the output.
It give an error: 'unable to load key file', although the file exists and is accessible

Should I use the openssl command or perform the 3 encryption steps by my self?

In reply to Re^2: RSA encryption for (Ducth) iDeal payment by Eric66
in thread RSA encryption for (Ducth) iDeal payment by Eric66

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