Enum HashFunc 

pub enum HashFunc {
    Sha1,
    Sha224,
    Sha256,
    Sha384,
    Sha512,
}

The hash a fingerprint was taken with (RFC 8122 §5).

MD2 and MD5 are deliberately absent. §5: implementations “MUST NOT use the MD2 and MD5 hash functions to calculate fingerprints or to verify received fingerprints that have been calculated using them”. A parser that accepted them would be offering a caller a value it is forbidden to act on, so they are rejected at the door instead.

Variants

Sha1

SHA-1. Accepted for interoperability with peers that still send it; not what sipx offers.

Sha224

SHA-224.

Sha256

SHA-256 — §5’s preferred function, and what sipx sends.

Sha384

SHA-384.

Sha512

SHA-512.

Implementations

impl HashFunc

pub fn as_str(self) -> &'static str

The token as it appears in SDP.

pub fn parse(token: &str) -> Option<Self>

The function a token names, if it is one that may be used.

Case-insensitive: §5’s grammar makes hash-func a token, and RFC 8866 §5 does not fix the case of attribute values. md5 and md2 parse to None — the grammar allows them and §5 forbids acting on them, and returning None is how that prohibition is expressed here.

pub fn digest_len(self) -> usize

How many octets the digest has.

pub fn hash(self, certificate: &[u8]) -> Vec<u8>

Hash a certificate with this function.

Trait Implementations

impl Clone for HashFunc

fn clone(&self) -> HashFunc

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HashFunc

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for HashFunc

fn eq(&self, other: &HashFunc) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for HashFunc

impl Eq for HashFunc

impl StructuralPartialEq for HashFunc