cho
70 lines
2.5 KiB
Java
70 lines
2.5 KiB
Java
package com.eactive.eai.util;
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import java.util.Base64;
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import javax.crypto.Cipher;
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import javax.crypto.spec.SecretKeySpec;
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//TOUSE
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//kbank 어댑터에서 업무데이터의 암호화 필드에 대한 암복호화
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//OAuth2.0 의 ClientID를 통해 등록된 key를 조회하여 사용
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public class CryptoUtil {
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public static final String defaultCharset = "utf-8";
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private CryptoUtil() {
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}
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public static String encryptAES(String key, String text) {
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return encrypt(key, text, "AES");
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}
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public static String decryptAES(String key, String base64EncodedText) {
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return decrypt(key, base64EncodedText, "AES");
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}
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public static String encrypt(String key, String text, String algoritm) throws IllegalArgumentException {
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try {
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SecretKeySpec secureKey = new SecretKeySpec(key.getBytes(), algoritm);
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Cipher cipher = Cipher.getInstance(algoritm);
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cipher.init(Cipher.ENCRYPT_MODE, secureKey);
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byte[] encryptData = cipher.doFinal(text.getBytes(defaultCharset));
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return new String(Base64.getEncoder().encode(encryptData));
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} catch (Exception e) {
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throw new IllegalArgumentException(e.toString());
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}
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}
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public static String decrypt(String key, String text, String algoritm) throws IllegalArgumentException {
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try {
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SecretKeySpec secureKey = new SecretKeySpec(key.getBytes(), algoritm);
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byte[] encryptedData = Base64.getDecoder().decode(text.getBytes(defaultCharset));
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Cipher cipher = Cipher.getInstance(algoritm);
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cipher.init(Cipher.DECRYPT_MODE, secureKey);
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byte[] plainText = cipher.doFinal(encryptedData);
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return new String(plainText);
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} catch (Exception e) {
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throw new IllegalArgumentException(e.toString());
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}
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}
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public static void main(String[] args) {
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String key = "ONAuROzlqWB4VuBwO5C/FA==";
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String text = "Hello AES 한글";
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// System.out.println("Original Text: " + text);
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long startEncryptTime = System.nanoTime();
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String enc = encryptAES(key, text);
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long endEncryptTime = System.nanoTime();
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long encryptDuration = endEncryptTime - startEncryptTime;
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// System.out.println("Encrypted Text: " + enc);
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// System.out.println("Encryption took: " + encryptDuration + " nanoseconds");
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long startDecryptTime = System.nanoTime();
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String dec = decryptAES(key, enc);
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long endDecryptTime = System.nanoTime();
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long decryptDuration = endDecryptTime - startDecryptTime;
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// System.out.println("Decrypted Text: " + dec);
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// System.out.println("Decryption took: " + decryptDuration + " nanoseconds");
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}
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} |