signed_jwt_example.rb

require 'openssl'
require 'jwt'
require 'awesome_print'

rsa_private = OpenSSL::PKey::RSA.generate 2048
rsa_public = rsa_private.public_key

payload = {
  'data' => 'test',
  'projects.quote.request' => true,
  'projects.quote.print' => true,
  'permissions' => [ { 
     type: "owner",
     owner_id: 1234,
     permissions: ["quote:read", "quote:create", "quote:accept", ], # All Permissions
 },
 { 
     type: "organisation",
     organisation_id: 1234,
     permissions: ["quote:read", "quote:create", "quote:accept", ], # All Permissions
 }]
}

token = JWT.encode payload, rsa_private, 'RS256'
# => "eyJhbGciOiJSUzI1NiJ9.eyJkYXRhIjoidGVzdCIsInByb2plY3RzLnF1b3RlLnJlcXVlc3QiOnRydWUsInByb2plY3RzLnF1b3RlLnByaW50Ijp0cnVlLCJwZXJtaXNzaW9ucyI6W3sidHlwZSI6Im93bmVyIiwib3duZXJfaWQiOjEyMzQsInBlcm1pc3Npb25zIjpbInF1b3RlOnJlYWQiLCJxdW90ZTpjcmVhdGUiLCJxdW90ZTphY2NlcHQiXX0seyJ0eXBlIjoib3JnYW5pc2F0aW9uIiwib3JnYW5pc2F0aW9uX2lkIjoxMjM0LCJwZXJtaXNzaW9ucyI6WyJxdW90ZTpyZWFkIiwicXVvdGU6Y3JlYXRlIiwicXVvdGU6YWNjZXB0Il19XX0.K66Z1UyWc15PxOnRqe6xAXgOce-vJygB_Xmmd4P37DwlBVAMXGQPkZ_5ga1G1Nl4X_zZrTJFeP5VvBVEkOZDob570AkXgKmttMrjiHqvkxJJp9u9g85sp40YgOUSDm5zRR5QjlG2xNkPTGRuB7SJuikrNAC-tjvSGSbg0C2ehYANXK96zeioEOZ1XTRSXJxldyKbJg7vwUp1R49vO3nUI2a0VPBF0EydIv5YYV5oadmqcH_Pt2ft9I8vFBTxpL0O6yP3IvH6bxIhIYvZ7aJzYvGCQEWCPqH526cf3Ab18kRZfAip5mQqxtEHp2hH5CJYWASKr1fbn8DtoOhfsHrzSA"

payload, headers = JWT.decode token, rsa_public, true, { algorithm: 'RS256' }
# decoded_token = JWT.decode token, OpenSSL::PKey.read(rsa_public.to_s), true, { algorithm: 'RS256' }

ap headers
ap payload
# >> {
# >>     "alg" => "RS256"
# >> }
# >> {
# >>                       "data" => "test",
# >>     "projects.quote.request" => true,
# >>       "projects.quote.print" => true,
# >>                "permissions" => [
# >>         [0] {
# >>                    "type" => "owner",
# >>                "owner_id" => 1234,
# >>             "permissions" => [
# >>                 [0] "quote:read",
# >>                 [1] "quote:create",
# >>                 [2] "quote:accept"
# >>             ]
# >>         },
# >>         [1] {
# >>                        "type" => "organisation",
# >>             "organisation_id" => 1234,
# >>                 "permissions" => [
# >>                 [0] "quote:read",
# >>                 [1] "quote:create",
# >>                 [2] "quote:accept"
# >>             ]
# >>         }
# >>     ]
# >> }