使用帮助

接口认证参数project/token/secret/Auth获取方法：

登录接口响应体参数中获取token,secret，登录接口响应头中获取Auth,价值云project:IOT

sign签名计算 Java示例

String encryptSign = hmacSha256(String message, String secret);    
private static final String HMAC_SHA256 = "HmacSHA256";
public static String hmacSha256(String message, String secret) {
    SecretKeySpec secretKeySpec = new SecretKeySpec(secret.getBytes(), HMAC_SHA256);
    try {
        Mac mac= Mac.getInstance(HMAC_SHA256);
        mac.init(secretKeySpec);
        byte[] bytes = mac.doFinal(message.getBytes());
        return bytes2String(bytes);
    } catch (Exception e) {
        return null;
    }
}
private static String bytes2String(byte[] input) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < input.length; i++) {
        sb.append(Integer.toString((input[i] & 0xff) + 0x100, 16).substring(1));
    }
    return sb.toString();
}

• message: 接口地址 如：/ppr/web/iotSysUser/registerByEmail
• secret: 密钥 登录接口响应体中获取

错误码说明如下：