**To create a custom authorizer** The following ``create-authorizer`` example creates a custom authorizer that uses the specified Lambda function as part of a custom authentication service. :: aws iot create-authorizer \ --authorizer-name "CustomAuthorizer" \ --authorizer-function-arn "arn:aws:lambda:us-west-2:123456789012:function:CustomAuthorizerFunction" \ --token-key-name "MyAuthToken" \ --status ACTIVE \ --token-signing-public-keys FIRST_KEY="-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1uJOB4lQPgG/lM6ZfIwo Z+7ENxAio9q6QD4FFqjGZsvjtYwjoe1RKK0U8Eq9xb5O3kRSmyIwTzwzm/f4Gf0Y ZUloJ+t3PUUwHrmbYTAgTrCUgRFygjfgVwGCPs5ZAX4Eyqt5cr+AIHIiUDbxSa7p zwOBKPeic0asNJpqT8PkBbRaKyleJh5oo81NDHHmVtbBm5A5YiJjqYXLaVAowKzZ +GqsNvAQ9Jy1wI2VrEa1OfL8flDB/BJLm7zjpfPOHDJQgID0XnZwAlNnZcOhCwIx 50g2LW2Oy9R/dmqtDmJiVP97Z4GykxPvwlYHrUXY0iW1R3AR/Ac1NhCTGZMwVDB1 lQIDAQAB -----END PUBLIC KEY-----" Output:: { "authorizerName": "CustomAuthorizer", "authorizerArn": "arn:aws:iot:us-west-2:123456789012:authorizer/CustomAuthorizer2" } For more information, see `CreateAuthorizer <https://docs.aws.amazon.com/iot/latest/apireference/API_CreateAuthorizer.html>`__ in the *AWS IoT API Reference*.