md5与rsa签名

规则：

一、将非空参数值的参数按照参数名ASCII码从小到大排序（字典序），使用URL键值对的格式（即key1=value1&key2=value2…）拼接成字符串stringA。

特别注意以下重要规则：

◆ 参数名ASCII码从小到大排序（字典序）； ◆ 如果参数的值为空或为null不参与签名； ◆ 参数名区分大小写；

二、再使用RSA加密规则，把拼接成字符串stringA加密，得到RSA加密后的值rsaValue。

三、最后值rsaValue，使用base64_encode编码所得最后sign参数值signValue;

var data = request.data;
    
    function getStr(){
        var data = request.data;
        delete data['sign'];
    
        var keys = [];
        for(var k in data) {
            keys.push(k);
        }
        keys.sort();
    
        var kv = [];
        for (var v of keys) {
            kv.push(v + '=' + data[v]);
        }
        var kvStr = kv.join('&');
        return kvStr;
    }
    
    var kvStr = getStr();
    if(data.sign_type=='MD5'){
        pm.globals.set('signkey','ca726fd39c3e64657fd44adcdbacef38');
        kvStr = kvStr+pm.globals.get('signkey');
        var sign_value =  CryptoJS.MD5(kvStr).toString();
        
    }else{
        pm.sendRequest('http://api.wanxun.com/jsrsasign-rsa-min.js', function (err, res) {
            if (err) {
                console.log(err);
            } else {
                pm.globals.set("forgeJS",  res.text());//设置好
            }
        });
    
        eval(postman.getGlobalVariable("forgeJS"));//初始化，然后下面就可以调用方法
        
        const private_key = '-----BEGIN RSA PRIVATE KEY-----'+
                    'MIICXgIBAAKBgQCTsYpXiOEbHTLW7IdhxUD5UV+5m9BPuJQCV0sp8677oN2ahYaB'+
                    'IYoAZego7JdytGKDotU/L/+WshjBhi2kdf5QQsc6VdXGpcpcm3Eb55Xzm8HbH2rt'+
                    'IwSk0U/O+OYT/N7dnkI47suoqHaLkoF5Z1RgnpZcOG8CeHn65uJEafmlrwIDAQAB'+
                    'AoGBAINIao96tZYTc1CGeaTX4PR9d9iV/yoOCUq3a7HD0YQMr08eZ7w7It9NtntC'+
                    'KzEj1Pnr8SA0uz2p28WSTtoEpGQ795Vk0l7pmn8Q/XwJbxQ/EJb7n2Df5AMgKa8i'+
                    '+hcUKA+dmhUFysmNARvYvKfPSee3RsmtMDXZ0H3ePH808e+BAkEAwrafxbJ7naPS'+
                    '5Fd/PRl3oH/kxDcOWb+DRVi9mFatSihTWQmOZzbOPt1xJOuWvPqX4BRA6nvW4noc'+
                    'k5occOOXbwJBAMIuNS5HRHUztIqoBOYYxm6XYKK5uCT5cel+VlP0sGoPAZlxV+Ih'+
                    'YeveinvARafTPRLoAGJRmlgX0dnBaS9dtcECQH5xFWPOOZPu1H5Pi2Lj7Nke9DGv'+
                    'BvSk9tvLeqM4diOX+DfzirPf1SLhrh2plyN1H7b1sAoVDT/YyEHZa+qrAKUCQQC/'+
                    'w0RPtJ/dordMK0vTNGpacvJDIWfCU/lz3olAlifWRYWN1Eo3DkKW3goi1imz6D+r'+
                    'OSSP9AiZsMRT6NaIqWHBAkEAim6hH4kVudPcNSNb/tTGBZDX2UBJLIgE4IjLQTop'+
                    'tI7fOglrgC3SUs1WzPoc59ndSFDDmEY0PxTarPD+JqLBIg=='+
                    '-----END RSA PRIVATE KEY-----';
                    
        
        var rsa = new RSAKey();
        rsa.readPrivateKeyFromPEMString(private_key);
        var hSig = rsa.sign(kvStr,'sha1');
        var sign_value = hextob64(hSig);
        
    }
    
    pm.globals.unset('sign');
    pm.globals.set("sign",sign_value);
    //console.log(sign_value);