Public request parameters

Last Updated: Feb 06, 2017

Public request parameters refer to the request parameters that every interface must use.

Name Type Required? Description
Format String No Type of value returned, JSON and XML supported. Default: XML
Version String Yes API version number; format: YYYY-MM-DD (date). The current version number is 2014-08-15.
AccessKeyId String Yes The access key ID used to access services, issued to a user by Alibaba Cloud.
Signature String Yes The signature result string. Refer to the description of the signature mechanism for details on the signature calculation method.
SignatureMethod String Yes Signature method, HMAC-SHA1 currently supported.
Timestamp String Yes The request’s timestamp. The date format follows the ISO8601 standard and uses UTC time. It is in the format of YYYY-MM-DDThh:mm:ssZ, for example, 2014-08-28T12:00:00Z (equivalent to 28/08/2014 12:00:00 Beijing time).
SignatureVersion String Yes Signature algorithm version. The current version is 1.0.
SignatureNonce String Yes A unique random number, used to prevent replay attacks. The user must use different random numbers for different requests.

XML example:

  1. https://ess.aliyuncs.com/
  2. ?Format=xml
  3. &Version=2014-08-28
  4. &Signature=Pc5WB8gokVn0xfeu%2FZV%2BiNM1dgI%3D
  5. &SignatureMethod=HMAC-SHA1
  6. &SignatureNonce=15215528852396
  7. &SignatureVersion=1.0
  8. &AccessKeyId=key-test
  9. &Timestamp=2014-08-28T12:00:00Z
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