Method new

Create a new certificate builder for the given subject's public key. Also requires a nonce (random value typically 16 or 32 bytes long) and the validity window of the certificate as Unix seconds. # Errors Returns [`Error::CertificateFieldInvalid`] if `valid_before < valid_after`.

(
        nonce: impl Into<Vec<u8>>,
        public_key: impl Into<public::KeyData>,
        valid_after: u64,
        valid_before: u64,
    )