(PowerBuilder) Duplicate openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Demonstrates how to duplicate the creation of an RSA signature produced by this OpenSSL command:

openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Pkey
integer li_Success
string ls_PkeyXml
oleobject loo_Rsa
string ls_StrData
string ls_Base64Sig

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

loo_Pkey = create oleobject
// Use "Chilkat_9_5_0.PrivateKey" for versions of Chilkat < 10.0.0
li_rc = loo_Pkey.ConnectToNewObject("Chilkat.PrivateKey")
if li_rc < 0 then
    destroy loo_Pkey
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Load the private key from an RSA PEM file:
li_Success = loo_Pkey.LoadPemFile("myKey.pem")

// Get the private key in XML format:
ls_PkeyXml = loo_Pkey.GetXml()

loo_Rsa = create oleobject
// Use "Chilkat_9_5_0.Rsa" for versions of Chilkat < 10.0.0
li_rc = loo_Rsa.ConnectToNewObject("Chilkat.Rsa")

// Import the private key into the RSA component:
li_Success = loo_Rsa.ImportPrivateKey(ls_PkeyXml)
if li_Success <> 1 then
    Write-Debug loo_Rsa.LastErrorText
    destroy loo_Pkey
    destroy loo_Rsa
    return
end if

// OpenSSL uses BigEndian byte ordering:
loo_Rsa.LittleEndian = 0

// The resulting signature will be a Base64 string:
loo_Rsa.EncodingMode = "base64"

// For simplicity, we're not loading
// the data to be signed from a file.  We are instead simply
// using a literal string value.  
ls_StrData = "This is the text to be signed."

// Hash the input using MD5, and then sign the hash:
// Other valid hash algorithm choices are "md2" and "sha-1".
ls_Base64Sig = loo_Rsa.SignStringENC(ls_StrData,"md5")

Write-Debug ls_Base64Sig

Write-Debug "Success!"


destroy loo_Pkey
destroy loo_Rsa