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Help Center/ OBS BrowserJS SDK/ API Reference/ Other APIs/ Generating Browser-Based Upload Parameters with Authentication Information

Generating Browser-Based Upload Parameters with Authentication Information

Updated on 2022-02-10 GMT+08:00

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API Description

You can use this API to generate parameters for authentication. The parameters can be used to upload data through POST operations based on a browser.

NOTE:

There are two request parameters generated:

Policy, which corresponds to the policy field in the form
Signature: which corresponds to the signature field in the form

Method Definition

ObsClient.createPostSignatureSync

Request Parameter

Field	Type	Optional or Mandatory	Description
Bucket	String	Optional	Bucket name
Key	String	Optional	Object name, which corresponds to the key field in the form
Expires	Number	Optional	Validity period of the browser-based upload authentication, in seconds. The default value is 300.
FormParams	Object	Optional	Other parameters of the browser-based upload except for key, policy, and signature. Possible values are: acl cache-control content-type content-disposition content-encoding expires

Returned Result

Field	Type	Description
OriginPolicy	String	Value of Policy that is not encoded by base64. This parameter can only be used for verification.
Policy	String	policy in the form
Signature	String	signature in the form

Sample Code

var formParams = {acl: 'public-read', 'content-type': 'text/plain'};
var res = obsClient.createPostSignatureSync({Bucket: 'bucketname', Key: 'objectkey', Expires:3600, FormParams: formParams});

console.log('Policy-->' + res['Policy']);
console.log('Signature-->' + res['Signature']);

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