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Unable to Sign Data Using RS256 Encryption Algorithm with our own Key.

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Posted on by VM-14050617-0

Hi,

We have a requirement to create JWT Token using RS256 Encryption algorithm with our key on On-Cloud Environment.

We have tried to do this using the Codeunit RSACryptoServiceProvider, but as far as we could understand, it does not provide the option to use our own key, instead, it initializes its own key.

We are unable to create an instance of RSACryptoServiceProvider with our key. Is there any option to use our key instead of initializing a new one?

Can anyone assist here?

Regards

Vishal Mittal

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Business Central

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VP-26091629-0 4 on at

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Unable to Sign Data Using RS256 Encryption Algorithm with our own Key.

I am running this test code and it is causing the session to crash. Is it known bug?

pageextension 70100 CustomerListExt extends "Customer List"

{

actions

{

addlast(Processing)

{

action(RSATest)

{

ApplicationArea = All;

trigger OnAction()

var

RSAKey: Text;

begin

RSAKey := '<RSAKeyValue><Modulus>secrettext</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>AwIDAQAB</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>';

Message(RSAEncrypt('TestTextToEncrypt', RSAKey));

end;

}

}

}

procedure RSAEncrypt(TextToEncrypt: Text; RsaXmlKey: SecretText): Text

var

RSACryptoProvider: Codeunit RSACryptoServiceProvider;

Base64Convert: Codeunit "Base64 Convert";

TempBlob: Codeunit "Temp Blob";

PlainTextOutStream: OutStream;

EncryptedTextInStream: InStream;

EncryptedTextOutStream: OutStream;

EncryptedTextBase64: Text;

begin

// Convert the text to an OutStream

TempBlob.CreateOutStream(PlainTextOutStream, TEXTENCODING::UTF8);

PlainTextOutStream.WriteText(TextToEncrypt);

// Reset the TempBlob and prepare InStream for encryption

TempBlob.CreateInStream(EncryptedTextInStream, TEXTENCODING::UTF8);

// Prepare OutStream for receiving encrypted data

TempBlob.CreateOutStream(EncryptedTextOutStream);

// Encrypt the text

RSACryptoProvider.Encrypt(RsaXmlKey, EncryptedTextInStream, true, EncryptedTextOutStream);

// Reset the TempBlob and create an InStream to read the encrypted data

TempBlob.CreateInStream(EncryptedTextInStream);

// Convert the encrypted data to Base64

EncryptedTextBase64 := Base64Convert.ToBase64(EncryptedTextInStream);

exit(EncryptedTextBase64);

end;

}
VM-14050617-0 6 on at

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Unable to Sign Data Using RS256 Encryption Algorithm with our own Key.

Hi @gdrenteria

Thank you for your quick response. I forgot to mention that we are doing it On-Cloud environment. Solution suggested by you will work only for On-Prem environment.

Regards

Vishal Mittal
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gdrenteria 12,167 Most Valuable Professional on at

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Unable to Sign Data Using RS256 Encryption Algorithm with our own Key.

Hi

I hope I understood correctly, I hope this can help you or give you some ideas.

BR

GR

Unable to Sign Data Using RS256 Encryption Algorithm with our own Key.

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