--- updatedAt: 2026-03-01T18:46:01.000Z agentTools: siteIndex: https://techdocs.akamai.com/llms.txt projectIndex: https://techdocs.akamai.com/property-mgr/llms.txt --- # dcpAuthHMACTransformation

The Internet of Things: Edge Connect product allows connected users and devices to communicate on a publish-subscribe basis within reserved namespaces. In conjunction with dcp​Auth​Variable​Extractor, this behavior affects how clients can authenticate themselves to edge servers, and which groups within namespaces are authorized to access topics. It transforms a source string value extracted from the client certificate and stored as a variable, then generates a hash value based on the selected algorithm, for use in authenticating the client request.

Note that you can apply this hash transformation, or either of the dcp​Auth​Regex​Transformation or dcp​Auth​Substring​Transformation behaviors.

Option Type Description Requires
hash​Conversion​Algorithm enum

Specifies the hash algorithm.

 
{"displayType":"enum","options":["SHA256","MD5","SHA384"],"tag":"select"}




SHA256

Use SHA-256.







MD5

Use MD5.







SHA384

Use SHA-384.






hash​Conversion​Key
string 

Specifies the key to generate the hash, ideally a long random string to ensure adequate security.



{"displayType":"string","tag":"input","type":"text"}