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April 28, 2024 01:08
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mOTP algorithm in Ruby under a permissive license. Permission has been granted by original author Matthias Straub to redistribute the mOTP algorithm under the MIT License.
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# mOTP algorithm in Ruby under a permissive license. Permission has been granted by original author Matthias Straub | |
# to redistribute the mOTP algorithm under the MIT License. | |
# References: https://github.com/elliotwutingfeng/motp/blob/main/CREDITS.md and https://motp.sourceforge.net | |
require 'openssl' | |
secret = '0123456789ABCDEF' | |
pin = '0000' | |
period = 10 | |
digits = 6 | |
unix_seconds = Time.now.to_i | |
puts OpenSSL::Digest::MD5.hexdigest("#{unix_seconds / period}#{secret}#{pin}")[0..digits - 1] | |
# MIT License | |
# Copyright (c) 2024 Wu Tingfeng <wutingfeng@outlook.com> | |
# 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 | |
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
# SOFTWARE. |
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