php、go、python后端接口签名实现

1. php实现

/*
 * 生成签名，$args为请求参数，$key为私钥
 */
function makeSignature($args, $key)
{
    if(isset($args['sign'])) {
        $oldSign = $args['sign'];
        unset($args['sign']);
    } else {
        $oldSign = '';
    }
    ksort($args);
    $requestString = '';
    foreach($args as $k => $v) {
        $requestString .= $k . '=' . urlencode($v);
    }
    $newSign = hash_hmac("sha256",strtolower($requestString) , $key);
    return $newSign;
}

2.golang 实现

package main

import (
    "crypto/sha1"
    "crypto/hmac"
	"crypto/sha256"
    "encoding/hex"
    "fmt"
    "sort"
    "strconv"
    "time"
)

func makeSign(params, key) {
    var dataParams string
    //ksort
    var keys []string
    for k := range params {
        keys = append(keys, k)
    }
    sort.Strings(keys)

    //拼接
    for _, k := range keys {
        fmt.Println("key:", k, "Value:", params[k])
        dataParams = dataParams + k + "=" + params[k] + "&"
    }
    fmt.Println(dataParams)
    ff := dataParams[0 : len(dataParams)-1]
    fmt.Println("去掉最后一个&：", ff)

    //对字符串进行hmac哈希
    h := hmac.New(sha256.New, key)
    h.Write([]byte(dataParams))
    bs := h.Sum(nil)
    sign := hex.EncodeToString(bs)

    //拼接请求参数
    dataPost := dataParams + "&sign" + "=" + sign
    return dataPost
}

3. python实现

from hashlib import sha256
import urllib
import hmac


def urlencode(val):
    return urllib.parse.quote(val, safe='/', encoding=None, errors=None)

def ksort(d):
    '''遍历字典转成list'''
    return [(k,urlencode(d[k])) for k in sorted(d.keys())]

def makeSign(params, key):
    dd = ksort(params)
    data = "&".join(["=".join(i) for i in dd if i[1] and i[0] != "sign"])
    return hmac.new(key.encode('utf-8'), data.encode('utf-8'), digestmod=sha256).hexdigest().upper()