Struct Fingerprint 

pub struct Fingerprint(/* private fields */);

An OpenSSH SHA256:<base64> public key fingerprint.

This is exactly what ssh-keygen -lf prints and what OpenSSH shows on an unknown-host prompt: unpadded base64 of the sha256 of the wire encoding. gunnar never computes “something like” a fingerprint. An operator has to be able to compare what gunnar lists against what ssh-keygen says on their laptop, so tests/fingerprint.rs pins it to known answers taken from the real OpenSSH binary.

Every constructor routes through fingerprint_of_blob, so there is one definition and it is a definition over bytes.

Implementations

impl Fingerprint

pub fn of_key(key: &PublicKey) -> Self

Fingerprint a parsed key.

Convenience over fingerprint_of_blob for the crates that link this ssh-key. gunnar-ssh cannot use it (see fingerprint_of_blob) and calls that function with russh’s key blob instead.

pub fn of_openssh(line: &str) -> Result<Self>

Parse an authorized_keys-style line and fingerprint it.

Accepts what OpenSSH writes: <algo> <base64> [comment].

pub fn parse(text: &str) -> Result<Self>

Accept a fingerprint that arrived as text: config file, gRPC request, an operator’s terminal.

Validated rather than trusted: SHA256: plus 43 base64 characters. A malformed fingerprint that gets stored anyway is a key that can never be matched and never be revoked.

pub fn as_str(&self) -> &str

The SHA256:... text.

Trait Implementations

impl Clone for Fingerprint

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Fingerprint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Fingerprint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Fingerprint

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

Formats the value using the given formatter.

impl Eq for Fingerprint

impl FromStr for Fingerprint

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl Hash for Fingerprint

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Fingerprint

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Fingerprint

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Fingerprint

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Fingerprint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Fingerprint