pub fn base64_decode_bytes(text: &str) -> Result<Vec<u8>, String>Expand description
The same decoder, stopping before the text.
base64_decode is the primitive a Beck program calls and a Str is UTF-8, so it ends in a
validation. A JOSE signature segment is not text and never will be, so the runtime’s OIDC
verifier reads the bytes: this is the shared half rather than a second decoder beside it.