阿里云获取签名值

1.

示例 1. 参数拼接法
以调用 DescribeRegions 查询地域为例。假设您获得了 AccessKeyID=testid 以及 AccessKeySecret=testsecret，签名流程如下所示：

构造规范化请求字符串。
http://ecs.aliyuncs.com/?Timestamp=2016-02-23T12:46:24Z&Format=XML&AccessKeyId=testid&Action=DescribeRegions&SignatureMethod=HMAC-SHA1&SignatureNonce=3ee8c1b8-83d3-44af-a94f-4e0ad82fd6cf&Version=2014-05-26&SignatureVersion=1.0
构造待签名字符串 StringToSign。
GET&%2F&AccessKeyId%3Dtestid%26Action%3DDescribeRegions%26Format%3DXML%26SignatureMethod%3DHMAC-SHA1%26SignatureNonce%3D3ee8c1b8-83d3-44af-a94f-4e0ad82fd6cf%26SignatureVersion%3D1.0%26Timestamp%3D2016-02-23T12%253A46%253A24Z%26Version%3D2014-05-26
计算签名值。因为 AccessKeySecret=testsecret，用于计算的Key为 testsecret&，计算得到的签名值为 OLeaidS1JvxuMvnyHOwuJ+uX5qY=。示例使用的是Java Base64编码方法。
Signature = Base64( HMAC-SHA1( AccessSecret, UTF-8-Encoding-Of(StringToSign) ) )
添加 RFC3986 规则编码后的Signature=OLeaidS1JvxuMvnyHOwuJ%2BuX5qY%3D 到 步骤1 的URL中。
http://ecs.aliyuncs.com/?SignatureVersion=1.0&Action=DescribeRegions&Format=XML&SignatureNonce=3ee8c1b8-83d3


python 实现:

# -*- coding:utf-8 -*-
# !/usr/bin/python
from hashlib import sha1
import hmac
import base64
#Signature = Base64( HMAC-SHA1( AccessSecret, UTF-8-Encoding-Of(StringToSign) ) )
#http://ecs.aliyuncs.com/?Timestamp=2016-02-23T12:46:24Z&Format=XML&AccessKeyId=testid&Action=DescribeRegions&SignatureMethod=HMAC-SHA1&SignatureNonce=3ee8c1b8-83d3-44af-a94f-4e0ad82fd6cf&Version=2014-05-26&SignatureVersion=1.0
#Signature = Base64( HMAC-SHA1( AccessSecret, UTF-8-Encoding-Of(StringToSign) ) )
#计算签名值。因为 AccessKeySecret=testsecret，用于计算的Key为 testsecret&，计算得到的签名值为 OLeaidS1JvxuMvnyHOwuJ+uX5qY=。示例使用的是Java Base64编码方法。
#Signature = Base64( HMAC-SHA1( AccessSecret, UTF-8-Encoding-Of(StringToSign) ) )
a='GET&%2F&AccessKeyId%3Dtestid%26Action%3DDescribeRegions%26Format%3DXML%26SignatureMethod%3DHMAC-SHA1%26SignatureNonce%3D3ee8c1b8-83d3-44af-a94f-4e0ad82fd6cf%26SignatureVersion%3D1.0%26Timestamp%3D2016-02-23T12%253A46%253A24Z%26Version%3D2014-05-26'
a=a.encode('utf-8')
my_sign = hmac.new('testsecret&',a, sha1).digest()
my_sign = base64.b64encode(my_sign)
print my_sign


C:Python27python.exe C:/Users/TLCB/PycharmProjects/untitled/aliyun/y1.py
OLeaidS1JvxuMvnyHOwuJ+uX5qY=