A PKCE verifier/challenge pair for the authorization-code flow of a public client (one that cannot hold a client secret).
Random secret sent with the token request as code_verifier.
code_verifier
BASE64URL(SHA256(codeVerifier)), sent in the authorization URL.
BASE64URL(SHA256(codeVerifier))
Always S256; EVE SSO does not accept the plain method.
S256
A PKCE verifier/challenge pair for the authorization-code flow of a public client (one that cannot hold a client secret).