Common request parameters

Parameter Type Required Description
Format String No The format in which to return the response. Valid values: JSON and XML. Default value: XML.
Version String Yes The version number of the API. Specify the version in the YYYY-MM-DD format. Set the value to 2014-11-11.
AccessKeyId String Yes The AccessKey ID provided to you by Alibaba Cloud.
Signature String Yes The signature string of the current request.
SignatureMethod String Yes The encryption method of the signature string. Set the value to HMAC-SHA1.
Timestamp String Yes The timestamp of the request. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.

Example: 2018-05-10T12:00:00Z, which represents 20:00:00 on Thursday, May 10, 2018 (UTC+8).

SignatureVersion String Yes The version of the signature encryption algorithm. Set the value to 1.0.
SignatureNonce String Yes A unique, random number used to prevent replay attacks. You must use different numbers for different requests.

Sample requests

https://cdn.aliyuncs.com/?Format=xml
&Version=2014-11-11
&Signature=Pc5WB8gokVn0xfeu%2FZV%2BiNM1dgI%3D
&SignatureMethod=HMAC-SHA1
&SignatureNonce=15215528852396&SignatureVersion=1.0
&AccessKeyId=key-test
&Timestamp=2018-05-10T12:00:00Z