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/// An unsigned 32-bit value (key) that maps to a byte-string (value).
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd)]
pub enum Tag {
// Enforcement of the "tags in strictly increasing order" rule is done using the
// little-endian encoding of the ASCII tag value; e.g. 'SIG\x00' is 0x00474953 and
// 'NONC' is 0x434e4f4e.
SIG, NONC, DELE, PATH, RADI, PUBK, MIDP, SREP, MINT, ROOT, CERT, MAXT, INDX, PAD
}
static PAD_VALUE: [u8; 4] = [b'P', b'A', b'D', 0xff];
static SIG_VALUE: [u8; 4] = [b'S', b'I', b'G', 0x00];
impl Tag {
/// Translates a tag into its on-the-wire representation
pub fn wire_value(&self) -> &'static [u8] {
match *self {
Tag::CERT => "CERT".as_bytes(),
Tag::DELE => "DELE".as_bytes(),
Tag::INDX => "INDX".as_bytes(),
Tag::MAXT => "MAXT".as_bytes(),
Tag::MIDP => "MIDP".as_bytes(),
Tag::MINT => "MINT".as_bytes(),
Tag::NONC => "NONC".as_bytes(),
Tag::PAD => PAD_VALUE.as_ref(),
Tag::PATH => "PATH".as_bytes(),
Tag::PUBK => "PUBK".as_bytes(),
Tag::RADI => "RADI".as_bytes(),
Tag::ROOT => "ROOT".as_bytes(),
Tag::SIG => SIG_VALUE.as_ref(),
Tag::SREP => "SREP".as_bytes(),
}
}
}
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