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Contents
# frozen_string_literal: true
require 'base64'
require 'openssl'
module Alula
# Helper class to build JWT tokens
# Used for internal video API calls or video API calls with a customer ID
module JwtHelper
ONE_HOUR = 60 * 60
class << self
def build_jwt_token(jwt_payload)
jwt_secret = Alula::Client.config.video_api_key
header = build_jwt_header
token_data = add_timestamp_to_payload(jwt_payload)
encoded_header = convert_to_base64(JSON.generate(header))
encoded_data = convert_to_base64(JSON.generate(token_data))
token = "#{encoded_header}.#{encoded_data}"
signature = sign_token(token, jwt_secret)
"#{token}.#{signature}"
end
def build_jwt_header
{
'typ' => 'JWT',
'alg' => 'HS256'
}
end
def add_timestamp_to_payload(payload)
current_timestamp = Time.now.to_i
payload.merge(
{
'iat' => current_timestamp,
'exp' => current_timestamp + ONE_HOUR # expiry time is 60 minutes from time of creation
}
)
end
def sign_token(token, secret)
signature = OpenSSL::HMAC.digest(OpenSSL::Digest.new('sha256'), secret, token)
convert_to_base64(signature)
end
def convert_to_base64(source)
# Encode in classical base64,
encoded_source = Base64.strict_encode64(source)
# Remove padding equal characters,
encoded_source = encoded_source.gsub('=', '')
# Replace characters according to base64url specifications,
encoded_source.tr('+/', '-_')
end
end
end
end
Version data entries
47 entries across 47 versions & 1 rubygems