(PowerBuilder) RSA Encrypt and OpenSSL Decrypt

Demonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt.

Note: This example requires Chilkat v11.0.0 or greater.

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

integer li_rc
integer li_Success
oleobject loo_Rsa
oleobject loo_PrivKey
oleobject loo_PubKey
string ls_PlainText
integer li_BUsePrivateKey
string ls_EncryptedStr
oleobject loo_Bd

li_Success = 0

// This requires 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

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

li_Success = loo_Rsa.GenKey(2048,loo_PrivKey)
li_Success = loo_PrivKey.SavePkcs8PemFile("qa_output/privKey.pem")

loo_PubKey = create oleobject
li_rc = loo_PubKey.ConnectToNewObject("Chilkat.PublicKey")

loo_PrivKey.ToPublicKey(loo_PubKey)

loo_Rsa.EncodingMode = "base64"
ls_PlainText = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890"
li_BUsePrivateKey = 0
loo_Rsa.UsePublicKey(loo_PubKey)
ls_EncryptedStr = loo_Rsa.EncryptStringENC(ls_PlainText,li_BUsePrivateKey)

loo_Bd = create oleobject
li_rc = loo_Bd.ConnectToNewObject("Chilkat.BinData")

loo_Bd.AppendEncoded(ls_EncryptedStr,"base64")
li_Success = loo_Bd.WriteFile("qa_output/enc.dat")

// The OpenSSL command to decrypt is:
// openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt

Write-Debug "OK"


destroy loo_Rsa
destroy loo_PrivKey
destroy loo_PubKey
destroy loo_Bd