Examples with SecretKeySpec javax.crypto.spec.SecretKeySpec used on opensource projects

Example 81 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project ETSMobile-Android2 by ApplETS.

the class SecurePreferences method decrypt.

private static String decrypt(String ciphertext) {
    if (ciphertext == null || ciphertext.length() == 0) {
        return ciphertext;
    }
    try {
        final Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(SecurePreferences.sKey, "AES"));
        return new String(cipher.doFinal(SecurePreferences.decode(ciphertext)), "UTF-8");
    } catch (Exception e) {
        Log.w(SecurePreferences.class.getName(), "decrypt", e);
        return null;
    }
}

Example 82 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project ETSMobile-Android2 by ApplETS.

the class SecurePreferences method encrypt.

private static String encrypt(String cleartext) {
    if (cleartext == null || cleartext.length() == 0) {
        return cleartext;
    }
    try {
        final Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(SecurePreferences.sKey, "AES"));
        return SecurePreferences.encode(cipher.doFinal(cleartext.getBytes("UTF-8")));
    } catch (Exception e) {
        Log.w(SecurePreferences.class.getName(), "encrypt", e);
        return null;
    }
}

Example 83 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Gradle-demo by Arisono.

the class AESUtil method encryptAES.

/**
	 * 加密
	 * @throws Exception 
	 */
public static byte[] encryptAES(byte[] data, byte[] key) throws Exception {
    //恢复密钥
    SecretKey secretKey = new SecretKeySpec(key, "AES");
    //Cipher完成加密
    Cipher cipher = Cipher.getInstance("AES");
    //根据密钥对cipher进行初始化
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);
    //加密
    byte[] encrypt = cipher.doFinal(data);
    return encrypt;
}

Example 84 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Gradle-demo by Arisono.

the class DESUtil method encryptDES.

/**
	 * 加密
	 * @throws Exception 
	 */
public static byte[] encryptDES(byte[] data, byte[] key) throws Exception {
    //获得密钥
    SecretKey secretKey = new SecretKeySpec(key, "DES");
    //Cipher完成加密
    Cipher cipher = Cipher.getInstance("DES");
    //初始化cipher
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);
    //加密
    byte[] encrypt = cipher.doFinal(data);
    return encrypt;
}

Example 85 with SecretKeySpec

use of javax.crypto.spec.SecretKeySpec in project Gradle-demo by Arisono.

the class DESede method decrypt3DES.

/**
	 * 解密
	 */
public static byte[] decrypt3DES(byte[] data, byte[] key) throws Exception {
    //恢复密钥
    SecretKey secretKey = new SecretKeySpec(key, "DESede");
    //Cipher完成解密
    Cipher cipher = Cipher.getInstance("DESede");
    //初始化cipher
    cipher.init(Cipher.DECRYPT_MODE, secretKey);
    byte[] plain = cipher.doFinal(data);
    return plain;
}