Method encrypt

src/main/java/com/github/utils/Rsa.java:16–37

(String str)

    private static final String rsaPubKey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8H6Gp7XP6UvEQzvUgGnt9nPX4exn1aNlmeyloMl6g2rEggeTNMp7I3iLPzQDbt6yedCru971fducKc2DgF/y2CcwAdqaKdxm0dSI2Zs4QLNYbKwWJ65wkgUh8+TJBnk+PGTgoxZ2wzvhJyRGjGhsFvLmZkUYPPxAPSNfjB3+/4wIDAQAB";

    public static String encrypt(String str) {
        try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream()) {
            PublicKey publicKeyFromX509 = getPublicKeyFromX509("RSA");
            Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
            cipher.init(Cipher.ENCRYPT_MODE, publicKeyFromX509);
            byte[] bytes = str.getBytes(StandardCharsets.UTF_8);
            // 根据密钥长度计算块大小
            int keySize = publicKeyFromX509.getEncoded().length * 8;
            int blockSize = (keySize / 8) - 11; // 减去 PKCS1 填充的长度

            for (int i = 0; i < bytes.length; i += blockSize) {
                int length = Math.min(blockSize, bytes.length - i);
                byte[] encryptedBlock = cipher.doFinal(bytes, i, length);
                byteArrayOutputStream.write(encryptedBlock);
            }

            return new String(Base64.encode(byteArrayOutputStream.toByteArray()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    private static PublicKey getPublicKeyFromX509(String str) throws Exception {
        KeyFactory keyFactory;