PowerBuilder

RSA Sign Using Private Key from .pfx/.p12 to Base64 Signature

See more RSA Examples

Demonstrates how to RSA sign something using a private key loaded from a .pfx/.p12. The RSA signature is returned in Base64 encoded format. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Rsa
oleobject loo_Pfx
oleobject loo_PrivKey
string ls_StrData
string ls_Base64Sig

li_Success = 0

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

loo_Rsa = create oleobject
li_rc = loo_Rsa.ConnectToNewObject("Chilkat.Rsa")
if li_rc < 0 then
    destroy loo_Rsa
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Load the .pfx/.p12
loo_Pfx = create oleobject
li_rc = loo_Pfx.ConnectToNewObject("Chilkat.Pfx")

li_Success = loo_Pfx.LoadPfxFile("qa_data/pfx/myKey.p12","myPassword")
if li_Success = 0 then
    Write-Debug loo_Pfx.LastErrorText
    destroy loo_Rsa
    destroy loo_Pfx
    return
end if

// Get the default private key.

loo_PrivKey = create oleobject
li_rc = loo_PrivKey.ConnectToNewObject("Chilkat.PrivateKey")

li_Success = loo_Pfx.PrivateKeyAt(0,loo_PrivKey)
if li_Success = 0 then
    Write-Debug loo_Pfx.LastErrorText
    destroy loo_Rsa
    destroy loo_Pfx
    destroy loo_PrivKey
    return
end if

// Import the private key into the RSA component:
li_Success = loo_Rsa.UsePrivateKey(loo_PrivKey)
if li_Success = 0 then
    Write-Debug loo_Rsa.LastErrorText
    destroy loo_Rsa
    destroy loo_Pfx
    destroy loo_PrivKey
    return
end if

// Get the signature in base64
loo_Rsa.EncodingMode = "base64"

ls_StrData = "This is the string to be signed."

// Sign the string using the sha256 hash algorithm.
// Other valid choices are "sha384", "sha512", "sha-1", "md2" and "md5".
ls_Base64Sig = loo_Rsa.SignStringENC(ls_StrData,"sha256")

Write-Debug ls_Base64Sig

Write-Debug "Success!"


destroy loo_Rsa
destroy loo_Pfx
destroy loo_PrivKey