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CDN API ReferenceAuthentication

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Authentication

This section is intended to describe authentication way to interact with SwiftFederation APIs.

1. Authorization Header and Format

  • Authorization Header Definition
FieldDescription
signatureAlgorithmSignature Algorithm. E.g. HMAC-SHA256
accessKeyIdAccess key id that is assigned to customer to call APIs.
signatureSignature is the string which is signed based on request headers, request path, request method, access key ID and request body with access key secret. Please refer to “Signature Algorithm”.

Note: Conversant will send access credential for access key ID and access key secret to customer/partners who is going to call the APIs currently.

  • Authorization Header Format
Authorization:${signatureAlgorithm} ${accessKeyId}:${signature}


2. Signature Algorithm

  • Populate signing string 
${HTTPMethod}+"\n"+${URI}+"\n"+${x-sfd-date}+"\n"+${x-sfd-nonce}+"\n"+${accessKeyId}+ "\n"+${requestBody}  e.g.  POST\n/v1.0/report/bandwidth\n20180330T200550Z\n90355\ncdn123456\n{"domains":["www.example1.com","www.example2.com"],"startTime":"2018-03-29T17:35:00Z","startTime":"2018-03-29T 17:45:00Z"}

Note: Request method should be converted to uppercase, e.g. POST 


  • Generate Signature

Calculate signature of signing string by using HMAC-SHA256 algorithm with access key secret. And then use hex to encode signature to string.

byte[] signatureBytes = hmacSha256(${accessKeySecret}, ${signingString});  String signature = Hex.encodeHex(signatureBytes);
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Appendix