C

Add Private Key to Java Keystore

See more Java KeyStore (JKS) Examples

Adds a private key to an existing Java keystore. C

#include <C_CkJavaKeyStore.h>
#include <C_CkCert.h>
#include <C_CkXmlCertVault.h>
#include <C_CkPrivateKey.h>
#include <C_CkPfx.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJavaKeyStore jks;
    const char *jksPassword;
    const char *jksPath;
    HCkCert cert;
    HCkXmlCertVault certVault;
    HCkPrivateKey privKey;
    const char *alias;
    HCkPfx pfx;

    success = FALSE;

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

    jks = CkJavaKeyStore_Create();

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

    //  Load the Java keystore from a file.
    success = CkJavaKeyStore_LoadFile(jks,jksPassword,jksPath);
    if (success != TRUE) {
        printf("%s\n",CkJavaKeyStore_lastErrorText(jks));
        CkJavaKeyStore_Dispose(jks);
        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 = CkCert_Create();

    //  Chilkat will automatically determine the format of the cert file and load it correctly.
    success = CkCert_LoadFromFile(cert,"/mycerts/alice.crt");
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        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 = CkXmlCertVault_Create();
    success = CkXmlCertVault_AddCertFile(certVault,"/mycerts/ca.crt");
    if (success != TRUE) {
        printf("%s\n",CkXmlCertVault_lastErrorText(certVault));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        return;
    }

    success = CkCert_UseCertVault(cert,certVault);
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        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 = CkPrivateKey_Create();
    success = CkPrivateKey_LoadPemFile(privKey,"/mycerts/alice.key");
    if (success != TRUE) {
        printf("%s\n",CkPrivateKey_lastErrorText(privKey));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        CkPrivateKey_Dispose(privKey);
        return;
    }

    //  Provide the certificate object with the private key:
    success = CkCert_SetPrivateKey(cert,privKey);
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        CkPrivateKey_Dispose(privKey);
        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 = CkJavaKeyStore_AddPrivateKey(jks,cert,alias,jksPassword);
    if (success != TRUE) {
        printf("%s\n",CkJavaKeyStore_lastErrorText(jks));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        CkPrivateKey_Dispose(privKey);
        return;
    }

    //  Write the updated JKS, which contains the new private key entry w/ certificate chain.
    success = CkJavaKeyStore_ToFile(jks,jksPassword,jksPath);
    if (success != TRUE) {
        printf("%s\n",CkJavaKeyStore_lastErrorText(jks));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        CkPrivateKey_Dispose(privKey);
        return;
    }

    printf("Added new private key entry (from .crt and .key files) to the JKS!\n");

    //  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 = CkPfx_Create();

    success = CkPfx_LoadPfxFile(pfx,"/myPfxFiles/my.pfx","pfxPassword");
    if (success != TRUE) {
        printf("%s\n",CkPfx_lastErrorText(pfx));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        CkPrivateKey_Dispose(privKey);
        CkPfx_Dispose(pfx);
        return;
    }

    //  This is easy -- simply add the PFX to the JKS
    alias = "bob";
    success = CkJavaKeyStore_AddPfx(jks,pfx,alias,jksPassword);
    if (success != TRUE) {
        printf("%s\n",CkJavaKeyStore_lastErrorText(jks));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        CkPrivateKey_Dispose(privKey);
        CkPfx_Dispose(pfx);
        return;
    }

    //  Write the updated JKS, which contains the new private key entry w/ certificate chain
    //  that came from the PFX.
    success = CkJavaKeyStore_ToFile(jks,jksPassword,jksPath);
    if (success != TRUE) {
        printf("%s\n",CkJavaKeyStore_lastErrorText(jks));
        CkJavaKeyStore_Dispose(jks);
        CkCert_Dispose(cert);
        CkXmlCertVault_Dispose(certVault);
        CkPrivateKey_Dispose(privKey);
        CkPfx_Dispose(pfx);
        return;
    }

    printf("Added new private key entry (from PFX) to the JKS!\n");


    CkJavaKeyStore_Dispose(jks);
    CkCert_Dispose(cert);
    CkXmlCertVault_Dispose(certVault);
    CkPrivateKey_Dispose(privKey);
    CkPfx_Dispose(pfx);

    }