CardLink implementation - Security error, invalid digest.

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Post by laxman.singh » Wed Jul 08, 2015 5:56 pm

CardLink- issue.PNG

issue screenshot - CardLink- issue.PNG (20.95 KiB) Viewed 3692 times

I have implemented CardLink payment gateway with Digest. But I am facing an error "Security error, invalid digest." while processing request.
I have rechecked all the checkout inputs (Merchant ID, Shared secret, and other payment detail) all the details are correct but I am unable to resolve this issue.
I lost my whole day in this but not found any solution.
Please help !
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Re: CardLink implementation - Security error, invalid digest

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Post by IP_CAM » Thu Jul 09, 2015 9:00 am

laxman.singh wrote:Please help !
Sound's like: hey Doc, it hurts bad, but I don't know, where and why... ???

Assistance may be possible, but only, if Patients are willing to do their part,
required to:
http://forum.opencart.com/viewtopic.php?f=176&t=53294

Ernie
hitline.info/shop/

My Github OC Site: https://github.com/IP-CAM
5'600 + FREE OC Extensions, on the World's largest private Github OC Repository Archive Site.

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Re: CardLink implementation - Security error, invalid digest

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Post by Cardlink » Thu Jul 09, 2015 2:29 pm

Dear Sir,

This error message informs you that there is error in the submitted form (Variable names, incorrect normalized string or incorrect usage of sha1 – base 64 algorithms).
Please contact us to help you fix the issue.

Contact email: ecommerce_support@cardlink.gr
Telephone number: 2106100676

Best Regards,

Cardlink eCommerce Support
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Re: CardLink implementation - Security error, invalid digest

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Post by laxman.singh » Thu Jul 09, 2015 5:51 pm

@IP_CAM : I am implementing the Cardlink payemnt gateway, in which while processing the checkout request Eurobank is showing "Security error, invalid digest."

I have implemented all the things as per the "Cardlink Payment Gateway - Redirect Model Specifications v1.0" doc.

So do you have any idea, what is the wrong I am doing.
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Re: CardLink implementation - Security error, invalid digest

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Post by IP_CAM » Thu Jul 09, 2015 10:23 pm

...it's less, to know, what you are tring to achieve, it's more, to find out, what software version, you use.
I just wanted to tell you this.
Ernie

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Re: CardLink implementation - Security error, invalid digest

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Post by swati.sharma » Tue Jul 14, 2015 7:15 pm

Hi Guys,

I am a DotNet developer in C#.

I am started working on CardLink payment gateway. While implementing, i am facing the same issue like others to get correct digest, getting "Security error, invalid digest" error on Eurobank screen.

Below code is using to calculate digest :

string digest = Convert.ToBase64String(new System.Security.Cryptography.SHA1Managed().ComputeHash(Encoding.UTF8.GetBytes(normalizedString.ToString())));

Could you please verify/provide the code to get valid digest for Cardlink in C#?

Please do the needful ASAP.
Thanks in advance.
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