HTTP registry: UNIXsum
The algorithm computed by the UNIX ``sum'' command, as defined by the Single UNIX Specification, Version 2. The output of this algorithm is an ASCII decimal-digit string representing the 16-bit checksum, which is the first word of the output of the UNIX ``sum'' command.
Integrity registry values define algorithms or message metadata used to detect alteration of HTTP content or representations. UNIXsum is registered in HTTP Digest Algorithm Values.
Identifier (http)
UNIXsum
The algorithm computed by the UNIX `sum'' command, as defined by the Single UNIX Specification, Version 2. The output of this algorithm is an ASCII decimal-digit string representing the 16-bit checksum, which is the first word of the output of the UNIX `sum'' command.
Prefer approved algorithms, define exactly which bytes are covered, and account for encoding, ranges, canonicalization, and replay.
This registry value is currently marked active by IANA. Follow the defining specification before sending, accepting, or proxying it.
IANA registry: http-dig-alg/http-dig-alg-1
Sources