Sha256: 7f40b193cf8d3ecfcd0ecfbda46119a6d5115260d16d1465af64daf1b08a5e5b
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Versions: 18
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Contents
require 'openssl'
require 'digest/sha1'
module PostmanMta
module Utils
# Usage:
# request = Signature.new(options)
# request.valid?('some-signature-hash', 'some-big-secret-key',)
#
class Signature
SPLITTER = '|'.freeze
TTL = 2.minutes
def initialize(options = {})
@options = options
@timestamp = Time.zone.at(@options[:timestamp].to_i)
end
def valid?(signature, secret)
return false if signature.blank? || secret.blank? || expired?
generate_signature(secret) == signature
end
def invalid?(*args)
!valid?(*args)
end
def expired?
!alive?
end
def alive?
alive_timerange.cover?(@timestamp)
end
def alive_timerange
@alive_timerange ||= (TTL.ago..Time.zone.now)
end
# Generate signature token
#
def generate_signature(secret)
hmac = OpenSSL::HMAC.digest(digest, secret, string_to_sign)
Base64.encode64(hmac).chomp
end
protected
def digest
OpenSSL::Digest::SHA256.new
end
def string_to_sign
[
@options[:request_method],
@options[:path],
@options[:access_key],
@timestamp.to_i
].map(&:to_s).join(SPLITTER)
end
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems