package mac;
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import javax.crypto.KeyGenerator;
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import javax.crypto.SecretKey;
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import java.security.NoSuchAlgorithmException;
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import java.util.Base64;
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public class KeyGeneratorTool {
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public static String getjihuoma() {
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// Éú³É256λAESÃÜÔ¿
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SecretKey secretKey=null;
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try {
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secretKey = generateAESKey(256);
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} catch (NoSuchAlgorithmException e) {
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// TODO ×Ô¶¯Éú³ÉµÄ catch ¿é
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e.printStackTrace();
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}
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// »ñÈ¡Base64±àÂëµÄÃÜÔ¿×Ö·û´®
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String base64Key = Base64.getEncoder().encodeToString(secretKey.getEncoded());
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return base64Key;
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}
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/**
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* Éú³ÉAESÃÜÔ¿
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* @param keySize ÃÜÔ¿³¤¶È(128, 192, »ò 256)
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*/
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public static SecretKey generateAESKey(int keySize) throws NoSuchAlgorithmException {
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KeyGenerator keyGen = KeyGenerator.getInstance("AES");
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keyGen.init(keySize);
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return keyGen.generateKey();
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}
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}
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