pub struct Approver { /* private fields */ }Expand description
A signer that can approve transactions, identified by its public key commitment and the signature scheme used to verify its signatures.
Note: an approver using AuthScheme::EcdsaK256Keccak discloses its public key and signature
at proving time and therefore does not provide public-key privacy, regardless of the component
it is used in (single-sig, multisig, or guarded multisig). See
AuthScheme::EcdsaK256Keccak for details, and prefer AuthScheme::Falcon512Poseidon2 if
signer-key privacy is required.
Implementations§
Source§impl Approver
impl Approver
Sourcepub fn new(pub_key: PublicKeyCommitment, auth_scheme: AuthScheme) -> Approver
pub fn new(pub_key: PublicKeyCommitment, auth_scheme: AuthScheme) -> Approver
Creates a new Approver from the given public key commitment and signature scheme.
§Security
The pub_key commitment must have been derived under auth_scheme. This is not checked
here: a commitment is a bare digest that carries no record of the scheme that produced it,
and this constructor accepts a raw commitment (e.g. one rebuilt from stored account state)
without the originating key, so it cannot re-derive or verify the scheme. Pairing a
commitment with the wrong scheme is a self-inflicted misconfiguration: authentication
dispatches on the stored scheme alone and hashes the provided key under that scheme’s hash
function, so a mismatched commitment can never be reproduced and the account becomes
permanently unauthenticatable.
To keep the two consistent by construction, derive the approver from a PublicKey via the
From<&PublicKey> conversion, or use the typed constructors on
AuthSingleSig.
Sourcepub fn pub_key(&self) -> PublicKeyCommitment
pub fn pub_key(&self) -> PublicKeyCommitment
Returns the public key commitment of this approver.
Sourcepub fn auth_scheme(&self) -> AuthScheme
pub fn auth_scheme(&self) -> AuthScheme
Returns the signature scheme of this approver.
Trait Implementations§
impl Copy for Approver
impl Eq for Approver
impl StructuralPartialEq for Approver
Auto Trait Implementations§
impl Freeze for Approver
impl RefUnwindSafe for Approver
impl Send for Approver
impl Sync for Approver
impl Unpin for Approver
impl UnsafeUnpin for Approver
impl UnwindSafe for Approver
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