Returns a base64url encoded random 32 byte string for the code verifier. This is used to generate the S256 code challenge. To align with node.js’s crypto module, padding is removed. If the verifier has not been obtained yet, it will be obtained and stored by creating a random 32 byte string and then base64url encoding it.

Returns:¶

bytes – The code verifier, without padding. This is used within the login flow to verify that the user is who they say they are.