List of usage examples for java.security Security addProvider
public static int addProvider(Provider provider)
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); KeyGenerator generator = KeyGenerator.getInstance("AES", "BC"); generator.init(128);/*w ww. j a v a 2s . c o m*/ Key keyToBeWrapped = generator.generateKey(); System.out.println("input : " + new String(keyToBeWrapped.getEncoded())); // create a wrapper and do the wrapping Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding", "BC"); KeyGenerator keyGen = KeyGenerator.getInstance("AES", "BC"); keyGen.init(256); Key wrapKey = keyGen.generateKey(); cipher.init(Cipher.ENCRYPT_MODE, wrapKey); byte[] wrappedKey = cipher.doFinal(keyToBeWrapped.getEncoded()); System.out.println("wrapped : " + new String(wrappedKey)); // unwrap the wrapped key cipher.init(Cipher.DECRYPT_MODE, wrapKey); Key key = new SecretKeySpec(cipher.doFinal(wrappedKey), "AES"); System.out.println("unwrapped: " + new String(key.getEncoded())); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA", "BC"); keyGen.initialize(512, new SecureRandom()); KeyPair keyPair = keyGen.generateKeyPair(); Signature signature = Signature.getInstance("DSA", "BC"); signature.initSign(keyPair.getPrivate(), new SecureRandom()); byte[] message = "abc".getBytes(); signature.update(message);//from ww w . j a v a2 s . com byte[] sigBytes = signature.sign(); signature.initVerify(keyPair.getPublic()); signature.update(message); System.out.println(signature.verify(sigBytes)); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA", "BC"); keyGen.initialize(512, new SecureRandom()); KeyPair keyPair = keyGen.generateKeyPair(); Signature signature = Signature.getInstance("SHA1withRSA", "BC"); signature.initSign(keyPair.getPrivate(), new SecureRandom()); byte[] message = "abc".getBytes(); signature.update(message);//from www . j a v a 2 s . co m byte[] sigBytes = signature.sign(); signature.initVerify(keyPair.getPublic()); signature.update(message); System.out.println(signature.verify(sigBytes)); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "input".getBytes(); byte[] keyBytes = "input123".getBytes(); byte[] ivBytes = "12345123".getBytes(); SecretKeySpec key = new SecretKeySpec(keyBytes, "DES"); IvParameterSpec ivSpec = new IvParameterSpec(new byte[8]); Cipher cipher = Cipher.getInstance("DES/CBC/PKCS7Padding", "BC"); cipher.init(Cipher.ENCRYPT_MODE, key, ivSpec); byte[] cipherText = new byte[cipher.getOutputSize(ivBytes.length + input.length)]; int ctLength = cipher.update(ivBytes, 0, ivBytes.length, cipherText, 0); ctLength += cipher.update(input, 0, input.length, cipherText, ctLength); ctLength += cipher.doFinal(cipherText, ctLength); cipher.init(Cipher.DECRYPT_MODE, key, ivSpec); byte[] buf = new byte[cipher.getOutputSize(ctLength)]; int bufLength = cipher.update(cipherText, 0, ctLength, buf, 0); bufLength += cipher.doFinal(buf, bufLength); byte[] plainText = new byte[bufLength - ivBytes.length]; System.arraycopy(buf, ivBytes.length, plainText, 0, plainText.length); System.out.println("plain : " + new String(plainText)); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "input".getBytes(); byte[] keyBytes = "input123".getBytes(); byte[] msgNumber = "input".getBytes(); IvParameterSpec zeroIv = new IvParameterSpec(new byte[8]); SecretKeySpec key = new SecretKeySpec(keyBytes, "DES"); Cipher cipher = Cipher.getInstance("DES/CBC/PKCS7Padding", "BC"); cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv); IvParameterSpec encryptionIv = new IvParameterSpec(cipher.doFinal(msgNumber), 0, 8); cipher.init(Cipher.ENCRYPT_MODE, key, encryptionIv); byte[] cipherText = new byte[cipher.getOutputSize(input.length)]; int ctLength = cipher.update(input, 0, input.length, cipherText, 0); ctLength += cipher.doFinal(cipherText, ctLength); System.out.println("cipher: " + new String(cipherText) + " bytes: " + ctLength); cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv); IvParameterSpec decryptionIv = new IvParameterSpec(cipher.doFinal(msgNumber), 0, 8); cipher.init(Cipher.DECRYPT_MODE, key, decryptionIv); byte[] plainText = new byte[cipher.getOutputSize(ctLength)]; int ptLength = cipher.update(cipherText, 0, ctLength, plainText, 0); ptLength += cipher.doFinal(plainText, ptLength); System.out.println("plain : " + new String(plainText, ptLength)); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "www.java2s.com".getBytes(); byte[] keyBytes = new byte[] { 0x01, 0x23, 0x45, 0x67, (byte) 0x89, (byte) 0xab, (byte) 0xcd, (byte) 0xef }; SecretKeySpec key = new SecretKeySpec(keyBytes, "DES"); Cipher cipher = Cipher.getInstance("DES/ECB/PKCS7Padding", "BC"); System.out.println("input : " + new String(input)); // encryption pass cipher.init(Cipher.ENCRYPT_MODE, key); byte[] cipherText = new byte[cipher.getOutputSize(input.length)]; int ctLength = cipher.update(input, 0, input.length, cipherText, 0); ctLength += cipher.doFinal(cipherText, ctLength); System.out.println("cipher: " + new String(cipherText) + " bytes: " + ctLength); // decryption pass cipher.init(Cipher.DECRYPT_MODE, key); byte[] plainText = new byte[cipher.getOutputSize(ctLength)]; int ptLength = cipher.update(cipherText, 0, ctLength, plainText, 0); ptLength += cipher.doFinal(plainText, ptLength); System.out.println("plain : " + new String(plainText) + " bytes: " + ptLength); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); AlgorithmParameters params = AlgorithmParameters.getInstance("AES", "BC"); IvParameterSpec ivSpec = new IvParameterSpec(new byte[16]); params.init(ivSpec);//from w w w .j a v a2 s .c om ASN1InputStream aIn = new ASN1InputStream(params.getEncoded("ASN.1")); System.out.println(ASN1Dump.dumpAsString(aIn.readObject())); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "ab".getBytes(); Cipher cipher = Cipher.getInstance("ElGamal/None/NoPadding", "BC"); KeyPairGenerator generator = KeyPairGenerator.getInstance("ElGamal", "BC"); SecureRandom random = new SecureRandom(); generator.initialize(128, random);/*from w w w.ja v a 2s. c o m*/ KeyPair pair = generator.generateKeyPair(); Key pubKey = pair.getPublic(); Key privKey = pair.getPrivate(); cipher.init(Cipher.ENCRYPT_MODE, pubKey, random); byte[] cipherText = cipher.doFinal(input); System.out.println("cipher: " + new String(cipherText)); cipher.init(Cipher.DECRYPT_MODE, privKey); byte[] plainText = cipher.doFinal(cipherText); System.out.println("plain : " + new String(plainText)); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "abc".getBytes(); Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding", "BC"); SecureRandom random = new SecureRandom(); KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "BC"); generator.initialize(256, random);//from w ww . jav a 2 s .co m KeyPair pair = generator.generateKeyPair(); Key pubKey = pair.getPublic(); Key privKey = pair.getPrivate(); cipher.init(Cipher.ENCRYPT_MODE, pubKey, random); byte[] cipherText = cipher.doFinal(input); System.out.println("cipher: " + new String(cipherText)); cipher.init(Cipher.DECRYPT_MODE, privKey); byte[] plainText = cipher.doFinal(cipherText); System.out.println("plain : " + new String(plainText)); }
From source file:MainClass.java
public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input = "abc".getBytes(); Cipher cipher = Cipher.getInstance("RSA/None/OAEPWithSHA1AndMGF1Padding", "BC"); SecureRandom random = new SecureRandom(); KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "BC"); generator.initialize(386, random);/*w w w. j ava 2s . co m*/ KeyPair pair = generator.generateKeyPair(); Key pubKey = pair.getPublic(); Key privKey = pair.getPrivate(); cipher.init(Cipher.ENCRYPT_MODE, pubKey, random); byte[] cipherText = cipher.doFinal(input); System.out.println("cipher: " + new String(cipherText)); cipher.init(Cipher.DECRYPT_MODE, privKey); byte[] plainText = cipher.doFinal(cipherText); System.out.println("plain : " + new String(plainText)); }