(VBScript) RSA Encrypt and OpenSSL Decrypt

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

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

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

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

set rsa = CreateObject("Chilkat_9_5_0.Rsa")

success = rsa.GenerateKey(2048)

' privKey is a Chilkat_9_5_0.PrivateKey
Set privKey = rsa.ExportPrivateKeyObj()
success = privKey.SavePkcs8PemFile("qa_output/privKey.pem")

rsa.EncodingMode = "base64"
plainText = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890"
bUsePrivateKey = 0
encryptedStr = rsa.EncryptStringENC(plainText,bUsePrivateKey)

set bd = CreateObject("Chilkat_9_5_0.BinData")
success = bd.AppendEncoded(encryptedStr,"base64")
success = 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

outFile.WriteLine("OK")

outFile.Close