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authorJakob Unterwurzacher2017-08-11 18:42:30 +0200
committerJakob Unterwurzacher2017-08-11 19:02:26 +0200
commit0c520845f3623eff28f0277a52e3ccffd928f5c2 (patch)
tree82a3e0f8c55ae980d29e33b230954638229089c9 /internal/configfile/scrypt_test.go
parentf59479736bed49411bda3368f419d6605f1faa78 (diff)
main: purge masterkey from memory as soon as possible
Remove the "Masterkey" field from fusefrontend.Args because it should not be stored longer than neccessary. Instead pass the masterkey as a separate argument to the filesystem initializers. Then overwrite it with zeros immediately so we don't have to wait for garbage collection. Note that the crypto implementation still stores at least a masterkey-derived value, so this change makes it harder, but not impossible, to extract the encryption keys from memory. Suggested at https://github.com/rfjakob/gocryptfs/issues/137
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