spring.turbo.util.crypto.TripleDESImpl Maven / Gradle / Ivy

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package spring.turbo.util.crypto;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

import static spring.turbo.util.CharsetPool.UTF_8;

/**
 * @author 应卓
 * @since 1.0.0
 */
final class TripleDESImpl implements TripleDES {

    private final SecretKeySpec secretKeySpec;
    private final IvParameterSpec ivSpec;

    TripleDESImpl(String password, String salt) {
        this.secretKeySpec = new SecretKeySpec(password.getBytes(), "TripleDES");
        this.ivSpec = new IvParameterSpec(salt.getBytes());
    }

    @Override
    public String encrypt(String input) {
        try {
            Cipher cipher = Cipher.getInstance("TripleDES/CBC/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivSpec);
            byte[] bytes = cipher.doFinal(input.getBytes(UTF_8));
            return Base64.toString(bytes);
        } catch (Exception e) {
            throw new IllegalArgumentException(e.getMessage());
        }
    }

    @Override
    public String decrypt(String cipherText) {
        try {
            Cipher cipher = Cipher.getInstance("TripleDES/CBC/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivSpec);
            byte[] bytes = cipher.doFinal(Base64.toBytes(cipherText));
            return new String(bytes, UTF_8);
        } catch (Exception e) {
            throw new IllegalArgumentException(e.getMessage());
        }
    }

}