Enum SignatureError 

pub enum SignatureError {
    Malformed(&'static str),
    NoLabel,
    MissingParameter(&'static str),
    NotCovered,
    Duplicate(String),
    MissingComponent(String),
    Algorithm(String),
    Nonce,
    Clock {
        skew: u64,
        window: u64,
    },
    Ahead {
        ahead: u64,
        allowed: u64,
    },
    Expired,
    NoDigest,
    DigestMismatch,
    NotAscii,
    BadSignature,
    PublicKey,
}

Why a signature, or something it depends on, was not accepted. The messages are safe to show a user and name what to fix.

Variants

Malformed(&'static str)

A header was present but did not parse.

NoLabel

Signature-Input or Signature has no member labelled LABEL.

MissingParameter(&'static str)

A parameter the server requires is absent.

NotCovered

A component Recall requires is not covered.

Duplicate(String)

A component is listed twice (RFC 9421 §2.5, step 2.1).

MissingComponent(String)

A covered component has no value in this request.

Algorithm(String)

alg names something other than ALGORITHM.

Nonce

The nonce is empty or longer than MAX_NONCE_LEN.

Clock

created is further behind the server’s clock than the window.

Fields

skew: u64

How far off it was, in seconds.

window: u64

How far off it may be.

Ahead

created is further ahead of the server’s clock than MAX_AHEAD_SECONDS.

Fields

ahead: u64

How far ahead it was, in seconds.

allowed: u64

How far ahead it may be.

Expired

expires has passed.

NoDigest

Content-Digest has no sha-256 member.

DigestMismatch

Content-Digest does not match the body received.

NotAscii

The signature base holds something that is not ASCII (§2.5, step 4).

BadSignature

The signature does not verify with the device’s key.

PublicKey

A public key is not an acceptable Ed25519 key.

Trait Implementations

impl Clone for SignatureError

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 SignatureError

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

Formats the value using the given formatter.

impl Display for SignatureError

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

Formats the value using the given formatter.

impl Eq for SignatureError

impl Error for SignatureError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl PartialEq for SignatureError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SignatureError