Common parameters

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, in the format of YYYY-MM-DD.

Set the value to 2017-03-21.

AccessKeyId

String

Yes

The AccessKey ID provided by Alibaba Cloud for you to access services.

For more information, see Overview.

Signature

String

Yes

The signature string of the current request. For more information about how signatures are calculated, see Signature method.

For more information about the sample code, see Signature.

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.

For example, 2017-3-29T12:00:00Z indicates 20:00:00, March 29, 2017 (UTC+8).

For more information about the sample code, see TimeStamp.

SignatureVersion

String

Yes

The version of the signature algorithm. Set the value to 1.0.

SignatureNonce

String

Yes

A unique and random number.

You must use different numbers for multiple requests to prevent replay attacks.

For more information about the sample code, see SignatureNonce.

SecurityToken

String

No

The temporary token provided by Security Token Service (STS). By default, the value of this parameter is empty.

For more information about the token, see STS temporary AccessKey pairs in the Overview topic. For more information about how to generate the token, see Use STS to authorize access.