trykeys.sh

#!/bin/bash

# I sincerely recommend this is backed by ramfs/tmpfs, otherwise you will
# probably hit your disk rather hard--which is bad for SSDs :)
# Same goes for any file you redirect stdout to.
WORKDIR="${1:-/tmp/work}"

mkdir -p "$WORKDIR" || exit 1

if [ ! -r ciphers.txt ]; then
	STREAM_CIPHERS="rc4 rc4-40"

	for fbm in cfb cfb1 cfb8 ofb; do
		for cipher in aes camellia; do
			for ksize in 128 192 256; do
				STREAM_CIPHERS="$STREAM_CIPHERS ${cipher}-${ksize}-${fbm}"
			done
		done
		for cipher in bf cast cast5 des des3 des-ede des-ede3 idea seed rc2 rc2-40 rc2-64 rc5; do
			STREAM_CIPHERS="$STREAM_CIPHERS ${cipher}-${fbm}"
		done
	done

	echo "$STREAM_CIPHERS" | sed -e "s/ /\n/g" > ciphers.txt
fi

for kw in $(cat passphrases.txt); do
	#for sc in $STREAM_CIPHERS; do
	#	openssl $sc -d -in ciphertext.txt -k "$kw" 2>/dev/null
	#done
	rm "$WORKDIR"/*
	xargs -a ciphers.txt -n 1 -P 0 -I {} openssl {} -d -in ciphertext.txt -k "$kw" -out "$WORKDIR/{}" 2>/dev/null
	cat "$WORKDIR"/*
done