Sha256: 408209d47b68a074a42b3deed620ab95b4bf38a745a5371f9670983c253a9b66
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Versions: 22
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Stored size: 1.09 KB
Contents
# frozen_string_literal: true
require 'singleton'
require 'rbnacl'
require 'base64'
module NanoBot
module Components
class Crypto
include Singleton
def initialize
password = ENV.fetch('NANO_BOTS_ENCRYPTION_PASSWORD', nil)
password = 'UNSAFE' unless password && password != ''
@box = RbNaCl::SecretBox.new(RbNaCl::Hash.sha256(password))
@fixed_nonce = RbNaCl::Hash.sha256(password)[0...@box.nonce_bytes]
end
def encrypt(content, soft: false)
nonce = soft ? @fixed_nonce : RbNaCl::Random.random_bytes(@box.nonce_bytes)
Base64.urlsafe_encode64(nonce + @box.encrypt(nonce, content))
end
def decrypt(content)
decoded_content = Base64.urlsafe_decode64(content)
nonce = decoded_content[0...@box.nonce_bytes]
cipher_text = decoded_content[@box.nonce_bytes..]
@box.decrypt(nonce, cipher_text)
end
def self.encrypt(content, soft: false)
instance.encrypt(content, soft:)
end
def self.decrypt(content)
instance.decrypt(content)
end
end
end
end
Version data entries
22 entries across 22 versions & 1 rubygems