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Add Private Key to Java Keystore

See more Java KeyStore (JKS) Examples

Adds a private key to an existing Java keystore. Go

    success := false

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

    jks := chilkat.NewJavaKeyStore()

    jksPassword := "myJksPassword"
    jksPath := "/someDir/keyStore.jks"

    // Load the Java keystore from a file.
    success = jks.LoadFile(jksPassword,jksPath)
    if success != true {
        fmt.Println(jks.LastErrorText())
        jks.DisposeJavaKeyStore()
        return
    }

    // A JKS private key entry consists of both the private key,
    // it's associated certificate (which contains the matching public key
    // within the X.509 of the certificate), and the certificates in the
    // chain of authentication to the root.
    // 
    // Therefore, to add a private key entry to a JKS requires
    // a Chilkat certificate object that has a private key and which also
    // has the certificate chain (up to the root) available.

    // There are many ways to get a Chilkat certificate object
    // that contains (within it) the private key and the certificate chain
    // This example will show two possibilities:
    // (1) Where the cert and issuing root are provided in PEM format in .crt files,
    // and the private key is also provided in unencrypted PEM format (.key file).
    // (2) Where the cert, private key, and issuing root are provided in a single PFX.

    // First for the .crt / .key files:
    cert := chilkat.NewCert()

    // Chilkat will automatically determine the format of the cert file and load it correctly.
    success = cert.LoadFromFile("/mycerts/alice.crt")
    if success != true {
        fmt.Println(cert.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        return
    }

    // Certificates required for building the chain of authentication can be
    // added to an XML certificate vault object, and then provided as
    // a source for obtaining certs when building the chain.
    certVault := chilkat.NewXmlCertVault()
    success = certVault.AddCertFile("/mycerts/ca.crt")
    if success != true {
        fmt.Println(certVault.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        return
    }

    success = cert.UseCertVault(certVault)
    if success != true {
        fmt.Println(cert.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        return
    }

    // Now provide the associated private key to the certificate object.
    // The Chilkat private key class provides methods for loading from many formats (both
    // encrypted and unencrypted).
    privKey := chilkat.NewPrivateKey()
    success = privKey.LoadPemFile("/mycerts/alice.key")
    if success != true {
        fmt.Println(privKey.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        privKey.DisposePrivateKey()
        return
    }

    // Provide the certificate object with the private key:
    success = cert.SetPrivateKey(privKey)
    if success != true {
        fmt.Println(cert.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        privKey.DisposePrivateKey()
        return
    }

    // Our certificate object now contains all that we need to add it as a private key entry
    // to the Java keystore:
    alias := "alice"
    success = jks.AddPrivateKey(cert,alias,jksPassword)
    if success != true {
        fmt.Println(jks.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        privKey.DisposePrivateKey()
        return
    }

    // Write the updated JKS, which contains the new private key entry w/ certificate chain.
    success = jks.ToFile(jksPassword,jksPath)
    if success != true {
        fmt.Println(jks.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        privKey.DisposePrivateKey()
        return
    }

    fmt.Println("Added new private key entry (from .crt and .key files) to the JKS!")

    // Now let's add a new private key entry from a PFX that contains a single
    // private key with associated cert and cert chain.
    pfx := chilkat.NewPfx()

    success = pfx.LoadPfxFile("/myPfxFiles/my.pfx","pfxPassword")
    if success != true {
        fmt.Println(pfx.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        privKey.DisposePrivateKey()
        pfx.DisposePfx()
        return
    }

    // This is easy -- simply add the PFX to the JKS
    alias = "bob"
    success = jks.AddPfx(pfx,alias,jksPassword)
    if success != true {
        fmt.Println(jks.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        privKey.DisposePrivateKey()
        pfx.DisposePfx()
        return
    }

    // Write the updated JKS, which contains the new private key entry w/ certificate chain
    // that came from the PFX.
    success = jks.ToFile(jksPassword,jksPath)
    if success != true {
        fmt.Println(jks.LastErrorText())
        jks.DisposeJavaKeyStore()
        cert.DisposeCert()
        certVault.DisposeXmlCertVault()
        privKey.DisposePrivateKey()
        pfx.DisposePfx()
        return
    }

    fmt.Println("Added new private key entry (from PFX) to the JKS!")

    jks.DisposeJavaKeyStore()
    cert.DisposeCert()
    certVault.DisposeXmlCertVault()
    privKey.DisposePrivateKey()
    pfx.DisposePfx()