验签工具类
PS：该验签方法仅在pamirs-core的5.0.16版本以上可正常使用
public class EipSignUtils {
public static final String SIGN_METHOD_MD5 = "md5";
private static final String SIGN_METHOD_HMAC = "hmac";
private static final String SECRET_KEY_ALGORITHM = "HmacMD5";
private static final String MESSAGE_DIGEST_MD5 = "MD5";
public static String signTopRequest(Map<String, String> params, String secret, String signMethod) throws IOException {
// 第一步：检查参数是否已经排序
String[] keys = params.keySet().toArray(new String[0]);
Arrays.sort(keys);
// 第二步：把所有参数名和参数值串在一起
StringBuilder query = new StringBuilder();
if (SIGN_METHOD_MD5.equals(signMethod)) {
query.append(secret);
}
for (String key : keys) {
String value = params.get(key);
if (StringUtils.isNoneBlank(key, value)) {
query.append(key).append(value);
}
}
// 第三步：使用MD5/HMAC加密
byte[] bytes;
if (SIGN_METHOD_HMAC.equals(signMethod)) {
bytes = encryptHMAC(query.toString(), secret);
} else {
query.append(secret);
bytes = encryptMD5(query.toString());
}
// 第四步：把二进制转化为大写的十六进制(正确签名应该为32大写字符串，此方法需要时使用)
return byte2hex(bytes);
}
private static byte[] encryptHMAC(String data, String secret) throws IOException {
byte[] bytes;
try {
SecretKey secretKey = new SecretKeySpec(secret.getBytes(StandardCharsets.UTF_8), SECRET_KEY_ALGORITHM);
Mac mac = Mac.getInstance(secretKey.getAlgorithm());
mac.init(secretKey);
bytes = mac.doFinal(data.getBytes(StandardCharsets.UTF_8));
} catch (GeneralSecurityException e) {
throw new IOException(e.toString(), e);
}
return bytes;
}
private static byte[] encryptMD5(String data) throws IOException {
return encryptMD5(data.getBytes(StandardCharsets.UTF_8));
}
private static byte[] encryptMD5(byte[] data) throws IOException {
try {
MessageDigest md = MessageDigest.getInstance(MESSAGE_DIGEST_MD5);
return md.digest(data);
} catch (NoSuchAlgorithmException e) {
throw new IOException(e.toString(), e);
}
}
private static String byte2hex(byte[] bytes) {
StringBuilder sign = new StringBuilder();
for (byte aByte : bytes) {
String hex = Integer.toHexString(aByte & 0xFF);
if (hex.length() == 1) {
sign.append("0");
}
sign.append(hex.toUpperCase());
}
return sign.toString();
}
}Oinone社区 作者：张博昊原创文章，如若转载，请注明出处：https://doc.oinone.top/backend/14224.html
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