Encrypted in Java using RSA/ECB/PKCS1Padding unable to decrypt in .Net

Question

I have a string that's encrypted using some crypto classes in Java (RSA/ECB/PKCS1Padding) and a public key we exchanged in advance.

I want to decrypt that string using our private key and this is the code I have.

 X509Certificate2 cert = new X509Certificate2("c:\\test.pfx", "test");
        string s =               "very long encrypted data";

        RSACryptoServiceProvider privateKeyProvider = (RSACryptoServiceProvider)cert.PrivateKey;

        string decryptedTest = System.Text.Encoding.UTF8.GetString(privateKeyProvider.Decrypt(Convert.FromBase64String(s), true));

I get an exception with error message.

"System.Security.Cryptography.CryptographicException: Error occurred while decoding OAEP padding"

What is that I'm doing wrong?

In which line do you get the exception?

gdoron
– gdoron

2011-12-19 19:05:45 +00:00
Commented Dec 19, 2011 at 19:05 — gdoron
– gdoron, Commented Dec 19, 2011 at 19:05

kol · Accepted Answer · 2011-12-19 19:06:58Z

0

Call Decrypt with the second parameter set to false. MSDN

...false to use PKCS#1 v1.5 padding.

answered Dec 19, 2011 at 19:06

kol

28.9k13 gold badges91 silver badges126 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Broken Link Over a year ago

I figured it out but, I will give you the credit. I appreciate your time.

Broken Link · Accepted Answer · 2011-12-19 19:07:25Z

0

This is the working code.

 X509Certificate2 cert = new X509Certificate2("c:\\test.pfx", "test");
    string s =               "very long encrypted data";

    RSACryptoServiceProvider privateKeyProvider = (RSACryptoServiceProvider)cert.PrivateKey;

    string decryptedTest = System.Text.Encoding.UTF8.GetString(privateKeyProvider.Decrypt(Convert.FromBase64String(s), true));

answered Dec 19, 2011 at 19:07

Broken Link

2,40610 gold badges31 silver badges48 bronze badges

Collectives™ on Stack Overflow

Encrypted in Java using RSA/ECB/PKCS1Padding unable to decrypt in .Net

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related