
# Copyright 2015-2023 Rivoreo

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# SOFTWARE.


get_encrypted_byte_count() {
	[ -f "$1" ] || return
	value="`wc -c < \"$1\" 2> /dev/null`"
}

_encrypt_history() {
	hexdump -v -e '1/1 "%02x\n"' | xtea_ctr_crypt "$1" %03o\\n $2 $3 | while read -r n; do printf "\\$n"; done
}

_decrypt_history() {
	hexdump -v -e '1/1 "%02x\n"' | xtea_ctr_crypt "$1" %03o\\n 0 | while read -r n; do printf "\\$n"; done
}
