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(Classic ASP) Convert Java KeyStore to PKCS12 / PFX
Loads a Java keystore file and saves it as a PKCS12 / PFX. A Java keystore (JKS) can contain two types of entries: (1) trusted root certificates or (2) private keys + cert chains. Usually a JKS will contain all entries of one type or another (and thus a particular JKS serves one purpose or another; meaning that a JKS containing trusted roots is used as a source for verifying pre-trusted roots, and a JKS containing private keys (and cert chains) is used as a secure, encrypted store for private keys).
A PKCS12 / PFX typically contains one or more private keys, along with each private key's certificate chain. Therefore, it typically makes sense to only write the private key entries to a PKCS12 (and the associated certificate chains). If a JKS contains trusted root certificates, it makes more sense to conver it to a PEM file (such as the CA cert bundle in PEM format from mozilla.org).
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% ' This requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. set jks = Server.CreateObject("Chilkat_9_5_0.JavaKeyStore") jksPassword = "myJksPassword" ' Load the Java keystore from a file. The JKS file password is used ' to verify the keyed digest that is found at the very end of the keystore. ' It verifies that the keystore has not been modified. success = jks.LoadFile(jksPassword,"/someDir/keyStore.jks") If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( jks.LastErrorText) & "</pre>" Response.End End If ' To convert, we'll access the private key entries ' from the JKS, add each to the PKCS12, and then save the PKCS12. set pkcs12 = Server.CreateObject("Chilkat_9_5_0.Pfx") numPrivateKeys = jks.NumPrivateKeys ' For each private key entry, get the private key and ' the associated certificate chain. ' Each private key is password protected. Usually it is the same ' password as used for the keyed digest of the entire JKS. ' However, this does not have to be. The password is passed ' here to handle the possibility of each private key requiring ' a different password. i = 0 Do While i < numPrivateKeys ' privKey is a Chilkat_9_5_0.PrivateKey Set privKey = jks.GetPrivateKey(jksPassword,i) Response.Write "<pre>" & Server.HTMLEncode( jks.GetPrivateKeyAlias(i)) & "</pre>" ' certChain is a Chilkat_9_5_0.CertChain Set certChain = jks.GetCertChain(i) ' Add the private key and it's associated certificate chain to the PKCS12. success = pkcs12.AddPrivateKey(privKey,certChain) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( pkcs12.LastErrorText) & "</pre>" Response.End End If i = i + 1 Loop ' Save the PKCS12 / PFX to a file. ' The password can be the same as the JKS password, or something new. ' (With the PKCS12 format, there is a single password for the entire contents ' of the file. With the JKS format, there is flexibility in allowing each private key ' to have it's own password.) pkcs12Password = "myNewPassword" success = pkcs12.ToFile(pkcs12Password,"/pkcs12_files/myPfx.p12") If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( pkcs12.LastErrorText) & "</pre>" Else Response.Write "<pre>" & Server.HTMLEncode( "Successfully saved to PKCS12 format.") & "</pre>" End If %> </body> </html>
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