Fcast-Obj-Digest-SHA256:

Fcast-Obj-Digest-SHA256:

[1] RFC 6968 - FCAST: Object Delivery for the Asynchronous Layered Coding (ALC) and NACK-Oriented Reliable Multicast (NORM) Protocols ( ( 版)) <https://tools.ietf.org/html/rfc6968#section-3.3>