Examples with RSAPublicKey java.security.interfaces.RSAPublicKey used on opensource projects

Example 26 with RSAPublicKey

use of java.security.interfaces.RSAPublicKey in project yyl_example by Relucent.

the class Rsa method main.

public static void main(String[] args) throws Exception {
    KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");
    // 密钥位数
    keyPairGen.initialize(1024);
    // 密钥对
    KeyPair keyPair = keyPairGen.generateKeyPair();
    // 公钥
    PublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
    // 私钥
    PrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
    String publicKeyString = getKeyString(publicKey);
    System.out.println("public:\n" + publicKeyString);
    String privateKeyString = getKeyString(privateKey);
    System.out.println("private:\n" + privateKeyString);
    // 加解密类
    // Cipher.getInstance("RSA/ECB/PKCS1Padding");
    Cipher cipher = Cipher.getInstance("RSA");
    // 明文
    byte[] plainText = "我们都很好！邮件：@sina.com".getBytes();
    // 加密
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    byte[] enBytes = cipher.doFinal(plainText);
    // 通过密钥字符串得到密钥
    publicKey = getPublicKey(publicKeyString);
    privateKey = getPrivateKey(privateKeyString);
    // 解密
    cipher.init(Cipher.DECRYPT_MODE, privateKey);
    byte[] deBytes = cipher.doFinal(enBytes);
    publicKeyString = getKeyString(publicKey);
    System.out.println("public:\n" + publicKeyString);
    privateKeyString = getKeyString(privateKey);
    System.out.println("private:\n" + privateKeyString);
    String s = new String(deBytes);
    System.out.println(s);
}

Example 27 with RSAPublicKey

use of java.security.interfaces.RSAPublicKey in project CloudStack-archive by CloudStack-extras.

the class RSAHelper method readKey.

private static RSAPublicKey readKey(String key) throws Exception {
    byte[] encKey = Base64.decodeBase64(key.split(" ")[1]);
    DataInputStream dis = new DataInputStream(new ByteArrayInputStream(encKey));
    byte[] header = readElement(dis);
    String pubKeyFormat = new String(header);
    if (!pubKeyFormat.equals("ssh-rsa"))
        throw new RuntimeException("Unsupported format");
    byte[] publicExponent = readElement(dis);
    byte[] modulus = readElement(dis);
    KeySpec spec = new RSAPublicKeySpec(new BigInteger(modulus), new BigInteger(publicExponent));
    KeyFactory keyFactory = KeyFactory.getInstance("RSA", BouncyCastleProvider.PROVIDER_NAME);
    RSAPublicKey pubKey = (RSAPublicKey) keyFactory.generatePublic(spec);
    return pubKey;
}

Example 28 with RSAPublicKey

use of java.security.interfaces.RSAPublicKey in project Gradle-demo by Arisono.

the class RSAUtils method generateKeyBytes.

/**
	 * 生成密钥对。注意这里是生成密钥对KeyPair，再由密钥对获取公私钥
	 * 生成RSA的公钥和私钥
	 * @return
	 */
public static Map<String, byte[]> generateKeyBytes() {
    try {
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(KEY_ALGORITHM);
        keyPairGenerator.initialize(KEY_SIZE);
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
        RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
        Map<String, byte[]> keyMap = new HashMap<String, byte[]>();
        keyMap.put(PUBLIC_KEY, publicKey.getEncoded());
        keyMap.put(PRIVATE_KEY, privateKey.getEncoded());
        return keyMap;
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return null;
}

Example 29 with RSAPublicKey

use of java.security.interfaces.RSAPublicKey in project azure-sdk-for-java by Azure.

the class JsonWebKey method fromRSA.

/**
     * Converts RSA key pair to JSON web key.
     * @param keyPair RSA key pair
     * @return the JSON web key, converted from RSA key pair.
     */
public static JsonWebKey fromRSA(KeyPair keyPair) {
    RSAPrivateCrtKey privateKey = (RSAPrivateCrtKey) keyPair.getPrivate();
    JsonWebKey key = null;
    if (privateKey != null) {
        key = new JsonWebKey().withKty(JsonWebKeyType.RSA).withN(toByteArray(privateKey.getModulus())).withE(toByteArray(privateKey.getPublicExponent())).withD(toByteArray(privateKey.getPrivateExponent())).withP(toByteArray(privateKey.getPrimeP())).withQ(toByteArray(privateKey.getPrimeQ())).withDp(toByteArray(privateKey.getPrimeExponentP())).withDq(toByteArray(privateKey.getPrimeExponentQ())).withQi(toByteArray(privateKey.getCrtCoefficient()));
    } else {
        RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
        key = new JsonWebKey().withKty(JsonWebKeyType.RSA).withN(toByteArray(publicKey.getModulus())).withE(toByteArray(publicKey.getPublicExponent())).withD(null).withP(null).withQ(null).withDp(null).withDq(null).withQi(null);
    }
    return key;
}

Example 30 with RSAPublicKey

use of java.security.interfaces.RSAPublicKey in project cloudstack by apache.

the class RSAHelper method encryptWithSSHPublicKey.

public static String encryptWithSSHPublicKey(String sshPublicKey, String content) {
    String returnString = null;
    try {
        RSAPublicKey publicKey = readKey(sshPublicKey);
        Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding", BouncyCastleProvider.PROVIDER_NAME);
        cipher.init(Cipher.ENCRYPT_MODE, publicKey, new SecureRandom());
        byte[] encrypted = cipher.doFinal(content.getBytes());
        returnString = Base64.encodeBase64String(encrypted);
    } catch (Exception e) {
        s_logger.info("[ignored]" + "error during public key encryption: " + e.getLocalizedMessage());
    }
    return returnString;
}