John the Ripper not working on Debian 10 Home › Forums › John the Ripper not working on Debian 10 This topic contains 0 replies, has 1 voice, and was last updated by BrianMiz 3 weeks, 1 day ago. Author Posts August 24, 2019 at 11:01 am #125772 BrianMizMember So i installed Debian 10 and decided to install John to make a few tests. But when i’m running the command john –format=raw-sha1 passwordFile.txt it prints Unknown ciphertext format name requested I’ve tried pretty much every thing i found on Google and Forums, installing jumbo version, trying with wordlists and different command syntax. It happens with other hashes too, like md5. Does anyone know what to do? Author Posts You must be logged in to reply to this topic.