java - JAR Manifest - field "D" containing weird hash -


i opened jar application archive manger , under meta-inf there file manifest.mf containing:

manifest-version: 9.9 ant-version: apache ant 1.9.6 class-path: app.jar created-by: 1.7.0_80-b15 (oracle corporation) main-class: test.app  name: test/app.class d: mcwcfcc9lvmnijusfzwkwyoysdwuorjhahq9yks8yh7hkvz54dtihewk3q27sw==

i wondering hash. looks base64 encoded, isn't. checked , after modyfing it, app not working, might checksum of file. looking field d in jar documentation, unable find mention it. , can read it?


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