1 package org
.argeo
.cms
.internal
.runtime
;
3 import java
.io
.IOException
;
4 import java
.io
.InputStream
;
5 import java
.io
.OutputStream
;
7 import java
.math
.BigInteger
;
8 import java
.nio
.file
.Files
;
9 import java
.nio
.file
.Path
;
10 import java
.security
.GeneralSecurityException
;
11 import java
.security
.KeyPair
;
12 import java
.security
.KeyPairGenerator
;
13 import java
.security
.KeyStore
;
14 import java
.security
.KeyStoreException
;
15 import java
.security
.PrivateKey
;
16 import java
.security
.SecureRandom
;
17 import java
.security
.Security
;
18 import java
.security
.cert
.Certificate
;
19 import java
.security
.cert
.CertificateException
;
20 import java
.security
.cert
.X509Certificate
;
21 import java
.util
.Date
;
23 import javax
.security
.auth
.x500
.X500Principal
;
25 import org
.bouncycastle
.asn1
.pkcs
.PrivateKeyInfo
;
26 import org
.bouncycastle
.cert
.X509CertificateHolder
;
27 import org
.bouncycastle
.cert
.X509v3CertificateBuilder
;
28 import org
.bouncycastle
.cert
.jcajce
.JcaX509CertificateConverter
;
29 import org
.bouncycastle
.cert
.jcajce
.JcaX509v3CertificateBuilder
;
30 import org
.bouncycastle
.jce
.provider
.BouncyCastleProvider
;
31 import org
.bouncycastle
.openssl
.PEMParser
;
32 import org
.bouncycastle
.openssl
.jcajce
.JcaPEMKeyConverter
;
33 import org
.bouncycastle
.openssl
.jcajce
.JceOpenSSLPKCS8DecryptorProviderBuilder
;
34 import org
.bouncycastle
.operator
.ContentSigner
;
35 import org
.bouncycastle
.operator
.InputDecryptorProvider
;
36 import org
.bouncycastle
.operator
.OperatorCreationException
;
37 import org
.bouncycastle
.operator
.jcajce
.JcaContentSignerBuilder
;
38 import org
.bouncycastle
.pkcs
.PKCS8EncryptedPrivateKeyInfo
;
39 import org
.bouncycastle
.pkcs
.PKCSException
;
42 * Utilities around private keys and certificate, mostly wrapping BouncyCastle
46 final static String PKCS12
= "PKCS12";
48 private final static String SECURITY_PROVIDER
;
50 Security
.addProvider(new BouncyCastleProvider());
51 SECURITY_PROVIDER
= "BC";
54 public static X509Certificate
generateSelfSignedCertificate(KeyStore keyStore
, X500Principal x500Principal
,
55 int keySize
, char[] keyPassword
) {
57 KeyPairGenerator kpGen
= KeyPairGenerator
.getInstance("RSA", SECURITY_PROVIDER
);
58 kpGen
.initialize(keySize
, new SecureRandom());
59 KeyPair pair
= kpGen
.generateKeyPair();
60 Date notBefore
= new Date(System
.currentTimeMillis() - 10000);
61 Date notAfter
= new Date(System
.currentTimeMillis() + 365 * 24L * 3600 * 1000);
62 BigInteger serial
= BigInteger
.valueOf(System
.currentTimeMillis());
63 X509v3CertificateBuilder certGen
= new JcaX509v3CertificateBuilder(x500Principal
, serial
, notBefore
,
64 notAfter
, x500Principal
, pair
.getPublic());
65 ContentSigner sigGen
= new JcaContentSignerBuilder("SHA256WithRSAEncryption").setProvider(SECURITY_PROVIDER
)
66 .build(pair
.getPrivate());
67 X509Certificate cert
= new JcaX509CertificateConverter().setProvider(SECURITY_PROVIDER
)
68 .getCertificate(certGen
.build(sigGen
));
69 cert
.checkValidity(new Date());
70 cert
.verify(cert
.getPublicKey());
72 keyStore
.setKeyEntry(x500Principal
.getName(), pair
.getPrivate(), keyPassword
, new Certificate
[] { cert
});
74 } catch (GeneralSecurityException
| OperatorCreationException e
) {
75 throw new RuntimeException("Cannot generate self-signed certificate", e
);
79 public static KeyStore
getKeyStore(Path keyStoreFile
, char[] keyStorePassword
, String keyStoreType
) {
81 KeyStore store
= KeyStore
.getInstance(keyStoreType
, SECURITY_PROVIDER
);
82 if (Files
.exists(keyStoreFile
)) {
83 try (InputStream fis
= Files
.newInputStream(keyStoreFile
)) {
84 store
.load(fis
, keyStorePassword
);
90 } catch (GeneralSecurityException
| IOException e
) {
91 throw new RuntimeException("Cannot load keystore " + keyStoreFile
, e
);
95 public static void saveKeyStore(Path keyStoreFile
, char[] keyStorePassword
, KeyStore keyStore
) {
97 try (OutputStream fis
= Files
.newOutputStream(keyStoreFile
)) {
98 keyStore
.store(fis
, keyStorePassword
);
100 } catch (GeneralSecurityException
| IOException e
) {
101 throw new RuntimeException("Cannot save keystore " + keyStoreFile
, e
);
105 // public static byte[] pemToPKCS12(final String keyFile, final String cerFile, final String password)
106 // throws Exception {
107 // // Get the private key
108 // FileReader reader = new FileReader(keyFile);
110 // PEMReader pem = new PemReader(reader, new PasswordFinder() {
112 // public char[] getPassword() {
113 // return password.toCharArray();
117 // PrivateKey key = ((KeyPair) pem.readObject()).getPrivate();
122 // // Get the certificate
123 // reader = new FileReader(cerFile);
124 // pem = new PEMReader(reader);
126 // X509Certificate cert = (X509Certificate) pem.readObject();
131 // // Put them into a PKCS12 keystore and write it to a byte[]
132 // ByteArrayOutputStream bos = new ByteArrayOutputStream();
133 // KeyStore ks = KeyStore.getInstance("PKCS12");
135 // ks.setKeyEntry("alias", (Key) key, password.toCharArray(), new java.security.cert.Certificate[] { cert });
136 // ks.store(bos, password.toCharArray());
138 // return bos.toByteArray();
141 public static void loadPem(KeyStore keyStore
, Reader key
, char[] keyPassword
, Reader cert
) {
142 PrivateKey privateKey
= loadPemPrivateKey(key
, keyPassword
);
143 X509Certificate certificate
= loadPemCertificate(cert
);
145 keyStore
.setKeyEntry(certificate
.getSubjectX500Principal().getName(), privateKey
, keyPassword
,
146 new java
.security
.cert
.Certificate
[] { certificate
});
147 } catch (KeyStoreException e
) {
148 throw new RuntimeException("Cannot store PEM certificate", e
);
152 public static PrivateKey
loadPemPrivateKey(Reader reader
, char[] keyPassword
) {
153 try (PEMParser pemParser
= new PEMParser(reader
)) {
154 JcaPEMKeyConverter converter
= new JcaPEMKeyConverter().setProvider("BC");
155 Object object
= pemParser
.readObject();
156 PrivateKeyInfo privateKeyInfo
;
157 if (object
instanceof PKCS8EncryptedPrivateKeyInfo
) {
158 if (keyPassword
== null)
159 throw new IllegalArgumentException("A key password is required");
160 InputDecryptorProvider decProv
= new JceOpenSSLPKCS8DecryptorProviderBuilder().build(keyPassword
);
161 privateKeyInfo
= ((PKCS8EncryptedPrivateKeyInfo
) object
).decryptPrivateKeyInfo(decProv
);
162 } else if (object
instanceof PrivateKeyInfo
) {
163 privateKeyInfo
= (PrivateKeyInfo
) object
;
165 throw new IllegalArgumentException("Unsupported format for private key");
167 return converter
.getPrivateKey(privateKeyInfo
);
168 } catch (IOException
| OperatorCreationException
| PKCSException e
) {
169 throw new RuntimeException("Cannot read private key", e
);
173 public static X509Certificate
loadPemCertificate(Reader reader
) {
174 try (PEMParser pemParser
= new PEMParser(reader
)) {
175 X509CertificateHolder certHolder
= (X509CertificateHolder
) pemParser
.readObject();
176 X509Certificate cert
= new JcaX509CertificateConverter().setProvider(SECURITY_PROVIDER
)
177 .getCertificate(certHolder
);
179 } catch (IOException
| CertificateException e
) {
180 throw new RuntimeException("Cannot read private key", e
);
184 public static void main(String
[] args
) throws Exception
{
185 final String ALGORITHM
= "RSA";
186 final String provider
= "BC";
187 SecureRandom secureRandom
= new SecureRandom();
188 long begin
= System
.currentTimeMillis();
189 for (int i
= 512; i
< 1024; i
= i
+ 2) {
191 KeyPairGenerator keyGen
= KeyPairGenerator
.getInstance(ALGORITHM
, provider
);
192 keyGen
.initialize(i
, secureRandom
);
193 keyGen
.generateKeyPair();
194 } catch (Exception e
) {
195 System
.err
.println(i
+ " : " + e
.getMessage());
198 System
.out
.println((System
.currentTimeMillis() - begin
) + " ms");
200 // // String text = "a";
202 // "testtesttesttesttesttesttesttesttesttesttesttesttesttesttest";
204 // System.out.println(text);
205 // PrivateKey privateKey;
206 // PublicKey publicKey;
207 // char[] password = "changeit".toCharArray();
208 // String alias = "CN=test";
209 // KeyStore keyStore = KeyStore.getInstance("pkcs12");
210 // File p12file = new File("test.p12");
212 // if (!p12file.exists()) {
213 // keyStore.load(null);
214 // generateSelfSignedCertificate(keyStore, new X500Principal(alias),
216 // try (OutputStream out = new FileOutputStream(p12file)) {
217 // keyStore.store(out, password);
220 // try (InputStream in = new FileInputStream(p12file)) {
221 // keyStore.load(in, password);
222 // privateKey = (PrivateKey) keyStore.getKey(alias, password);
223 // publicKey = keyStore.getCertificateChain(alias)[0].getPublicKey();
226 // // final KeyPairGenerator keyGen =
227 // // KeyPairGenerator.getInstance(ALGORITHM);
228 // // keyGen.initialize(4096, new SecureRandom());
229 // // long begin = System.currentTimeMillis();
230 // // key = keyGen.generateKeyPair();
231 // // System.out.println((System.currentTimeMillis() - begin) + " ms");
232 // // keyStore.load(null);
233 // // keyStore.setKeyEntry("test", key.getPrivate(), password, null);
234 // // try(OutputStream out=new FileOutputStream(p12file)) {
235 // // keyStore.store(out, password);
237 // // privateKey = key.getPrivate();
238 // // publicKey = key.getPublic();
240 // Cipher encrypt = Cipher.getInstance(ALGORITHM);
241 // encrypt.init(Cipher.ENCRYPT_MODE, publicKey);
242 // byte[] encrypted = encrypt.doFinal(text.getBytes());
243 // String encryptedBase64 =
244 // Base64.getEncoder().encodeToString(encrypted);
245 // System.out.println(encryptedBase64);
246 // byte[] encryptedFromBase64 =
247 // Base64.getDecoder().decode(encryptedBase64);
249 // Cipher decrypt = Cipher.getInstance(ALGORITHM);
250 // decrypt.init(Cipher.DECRYPT_MODE, privateKey);
251 // byte[] decrypted = decrypt.doFinal(encryptedFromBase64);
252 // System.out.println(new String(decrypted));
253 // } catch (Exception e) {
254 // e.printStackTrace();