Dalam kasus saya, saya memiliki file pem yang berisi dua sertifikat dan kunci pribadi terenkripsi untuk digunakan dalam otentikasi SSL bersama. Jadi file pem saya terlihat seperti ini:
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,C8BF220FC76AA5F9
...
-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
Inilah yang saya lakukan:
Bagi file menjadi tiga file terpisah, sehingga masing-masing berisi hanya satu entri, dimulai dengan "--- BEGIN .." dan diakhiri dengan baris "--- END ..". Mari kita asumsikan kita sekarang memiliki tiga file: cert1.pem cert2.pem dan pkey.pem
Ubah pkey.pem ke dalam format DER menggunakan openssl dan sintaks berikut:
openssl pkcs8 -topk8 -nocrypt -in pkey.pem -inform PEM -out pkey.der -outform DER
Perhatikan, bahwa jika kunci pribadi dienkripsi, Anda perlu memberikan kata sandi (mendapatkannya dari pemasok file pem yang asli) untuk mengonversi ke format DER, openssl akan meminta kata sandi seperti ini: "masukkan pass phraze for pkey .pem: "Jika konversi berhasil, Anda akan mendapatkan file baru bernama" pkey.der "
Buat penyimpanan kunci java baru dan impor kunci pribadi dan sertifikat:
String keypass = "password"; // this is a new password, you need to come up with to protect your java key store file
String defaultalias = "importkey";
KeyStore ks = KeyStore.getInstance("JKS", "SUN");
// this section does not make much sense to me,
// but I will leave it intact as this is how it was in the original example I found on internet:
ks.load( null, keypass.toCharArray());
ks.store( new FileOutputStream ( "mykeystore" ), keypass.toCharArray());
ks.load( new FileInputStream ( "mykeystore" ), keypass.toCharArray());
// end of section..
// read the key file from disk and create a PrivateKey
FileInputStream fis = new FileInputStream("pkey.der");
DataInputStream dis = new DataInputStream(fis);
byte[] bytes = new byte[dis.available()];
dis.readFully(bytes);
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
byte[] key = new byte[bais.available()];
KeyFactory kf = KeyFactory.getInstance("RSA");
bais.read(key, 0, bais.available());
bais.close();
PKCS8EncodedKeySpec keysp = new PKCS8EncodedKeySpec ( key );
PrivateKey ff = kf.generatePrivate (keysp);
// read the certificates from the files and load them into the key store:
Collection col_crt1 = CertificateFactory.getInstance("X509").generateCertificates(new FileInputStream("cert1.pem"));
Collection col_crt2 = CertificateFactory.getInstance("X509").generateCertificates(new FileInputStream("cert2.pem"));
Certificate crt1 = (Certificate) col_crt1.iterator().next();
Certificate crt2 = (Certificate) col_crt2.iterator().next();
Certificate[] chain = new Certificate[] { crt1, crt2 };
String alias1 = ((X509Certificate) crt1).getSubjectX500Principal().getName();
String alias2 = ((X509Certificate) crt2).getSubjectX500Principal().getName();
ks.setCertificateEntry(alias1, crt1);
ks.setCertificateEntry(alias2, crt2);
// store the private key
ks.setKeyEntry(defaultalias, ff, keypass.toCharArray(), chain );
// save the key store to a file
ks.store(new FileOutputStream ( "mykeystore" ),keypass.toCharArray());
(opsional) Verifikasi konten penyimpanan kunci baru Anda:
keytool -list -keystore mykeystore -storepass password
Jenis Keystore: JKS Keystore provider: SUN
Keystore Anda berisi 3 entri
cn = ..., ou = ..., o = .., 2 Sep 2014, trustCertEntry, Sertifikat sidik jari (SHA1): 2C: B8: ...
importkey, 2 Sep 2014, PrivateKeyEntry, Sertifikat sidik jari (SHA1): 9C: B0: ...
cn = ..., o = ...., 2 Sep 2014, trustCertEntry, Sertifikat sidik jari (SHA1): 83:63: ...
(opsional) Uji sertifikat dan kunci pribadi Anda dari penyimpanan kunci baru Anda terhadap server SSL Anda: (Anda mungkin ingin mengaktifkan debugging sebagai opsi VM: -Djavax.net.debug = semua)
char[] passw = "password".toCharArray();
KeyStore ks = KeyStore.getInstance("JKS", "SUN");
ks.load(new FileInputStream ( "mykeystore" ), passw );
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, passw);
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(ks);
TrustManager[] tm = tmf.getTrustManagers();
SSLContext sclx = SSLContext.getInstance("TLS");
sclx.init( kmf.getKeyManagers(), tm, null);
SSLSocketFactory factory = sclx.getSocketFactory();
SSLSocket socket = (SSLSocket) factory.createSocket( "192.168.1.111", 443 );
socket.startHandshake();
//if no exceptions are thrown in the startHandshake method, then everything is fine..
Akhirnya daftarkan sertifikat Anda dengan HttpsURLConnection jika berencana untuk menggunakannya:
char[] passw = "password".toCharArray();
KeyStore ks = KeyStore.getInstance("JKS", "SUN");
ks.load(new FileInputStream ( "mykeystore" ), passw );
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, passw);
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(ks);
TrustManager[] tm = tmf.getTrustManagers();
SSLContext sclx = SSLContext.getInstance("TLS");
sclx.init( kmf.getKeyManagers(), tm, null);
HostnameVerifier hv = new HostnameVerifier()
{
public boolean verify(String urlHostName, SSLSession session)
{
if (!urlHostName.equalsIgnoreCase(session.getPeerHost()))
{
System.out.println("Warning: URL host '" + urlHostName + "' is different to SSLSession host '" + session.getPeerHost() + "'.");
}
return true;
}
};
HttpsURLConnection.setDefaultSSLSocketFactory( sclx.getSocketFactory() );
HttpsURLConnection.setDefaultHostnameVerifier(hv);