Function dcaf::token::get_token_headers

pub fn get_token_headers(
    token: &ByteString
) -> Option<(Header, ProtectedHeader)>

Returns the headers of the given signed (CoseSign1 / CoseSign), MAC tagged (CoseMac0 / CoseMac), or encrypted (CoseEncrypt0 / CoseEncrypt) access token.

When the given token is none of those structures mentioned above, None is returned.

Example

For example, say you have an access token saved in token and want to look at its headers:

if let Some((unprotected_header, protected_header)) = get_token_headers(&token) {
  assert_eq!(protected_header.header.key_id, vec![0x84, 0x9b, 0x57, 0x86, 0x45, 0x7c])
} else {
  unreachable!("Example token should be valid.")
}