dcpAuthSubstringTransformation

Property Manager name: Variable Substring Transformation
Behavior version: The v2024-10-21 rule format supports the dcpAuthSubstringTransformation behavior v1.0.
Rule format status: GA, stable
Access: Read/Write
Allowed in includes: No (temporarily)

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 dcpAuthVariableExtractor, 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 extracts a substring, for use in authenticating the client request.

Note that you can apply this substring transformation, or either of the dcpAuthHMACTransformation or dcpAuthRegexTransformation behaviors.

Option Type Description Requires

Option	Type	Description	Requires
`substringStart`	string	The zero-based index offset of the first character to extract. If the index is out of bound from the string's length, authentication may fail.		{"displayType":"string","tag":"input","type":"text"}
`substringEnd`	string	The zero-based index offset of the last character to extract, where `-1` selects the remainder of the string. If the index is out of bound from the string's length, authentication may fail.		{"displayType":"string","tag":"input","type":"text"}

substringStart

string

The zero-based index offset of the first character to extract. If the index is out of bound from the string's length, authentication may fail.

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

substringEnd

string

The zero-based index offset of the last character to extract, where -1 selects the remainder of the string. If the index is out of bound from the string's length, authentication may fail.

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