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(PowerBuilder) RSA Signature SHA256withRSA, iso-8859-1, base64

See more RSA Examples

RSA sign the iso-8859-1 byte representation of a string with SHA256withRSA, and return the signature in the base64 encoding.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_PrivKey
integer li_Success
oleobject loo_Rsa
string ls_OriginalData
string ls_SigBase64

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example will duplicate the following Java code:
// 
// Signature sign = Signature.getInstance("SHA256withRSA");
// sign.initSign(privateKey);
// sign.update(original.getBytes(Charset.forName("ISO-8859-1")));
// 
// ...
// byte[] resultado = sign.sign();
// sello = encodeByteArrayToBase64(resultado);
// 

// Load an RSA private key for signing.
// You can load any format file.  This example loads a .pem, but you can provide path to any type of file holding a private key.
loo_PrivKey = create oleobject
li_rc = loo_PrivKey.ConnectToNewObject("Chilkat_9_5_0.PrivateKey")
if li_rc < 0 then
    destroy loo_PrivKey
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_PrivKey.LoadAnyFormatFile("qa_data/pem/rsa_passwd.pem","passwd")
if li_Success <> 1 then
    Write-Debug loo_PrivKey.LastErrorText
    destroy loo_PrivKey
    return
end if

loo_Rsa = create oleobject
li_rc = loo_Rsa.ConnectToNewObject("Chilkat_9_5_0.Rsa")

loo_Rsa.ImportPrivateKeyObj(loo_PrivKey)

ls_OriginalData = "This is the string to be hashed an RSA signed."

// Indicate that we want the iso-8859-1 byte representation of the string to be signed
loo_Rsa.Charset = "iso-8859-1"

// We want the RSA signature in base64 format
loo_Rsa.EncodingMode = "base64"

ls_SigBase64 = loo_Rsa.SignStringENC(ls_OriginalData,"sha256")
Write-Debug ls_SigBase64


destroy loo_PrivKey
destroy loo_Rsa

 

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