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(VBScript) Generate an RSA Key and Get as Base64 DERDemonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER. Note: This example requires Chilkat v11.0.0 or greater.
Dim fso, outFile Set fso = CreateObject("Scripting.FileSystemObject") 'Create a Unicode (utf-16) output text file. Set outFile = fso.CreateTextFile("output.txt", True, True) success = 0 ' This example assumes the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. set rsa = CreateObject("Chilkat.Rsa") ' Generate a 2048-bit key. set privKey = CreateObject("Chilkat.PrivateKey") success = rsa.GenKey(2048,privKey) If (success = 0) Then outFile.WriteLine(rsa.LastErrorText) WScript.Quit End If ' Get the public part of the key. set pubKey = CreateObject("Chilkat.PublicKey") success = privKey.ToPublicKey(pubKey) ' There are two possible formats for representing the RSA public key ' in ASN.1 (DER). The possible formats are PKCS1 and PKCS8. ' We can get either by setting bChoosePkcs1 to 1 or 0. bChoosePkcs1 = 1 pubKeyBase64Der = pubKey.GetEncoded(bChoosePkcs1,"base64") outFile.WriteLine("Public Key Base64 DER:") outFile.WriteLine(pubKeyBase64Der) ' Get the private key as Base64 DER: ' We can get PKCS1 or PKCS8, but with different methods: privKeyPkcs1 = privKey.GetPkcs1ENC("base64") outFile.WriteLine("Private Key PKCS1 Base64 DER:") outFile.WriteLine(privKeyPkcs1) privKeyPkcs8 = privKey.GetPkcs8ENC("base64") outFile.WriteLine("Private Key PKCS8 Base64 DER:") outFile.WriteLine(privKeyPkcs8) outFile.Close |
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