Struct BBSPresentation

pub struct BBSPresentation { /* private fields */ }

A BBSPresentation is a proof of knowledge of the VerifiedCredential. It contains a proof that the presentation has been signed by the Issuer, and can be verified by the certificate of the Issuer.

Implementations

impl BBSPresentation

pub fn assert_closed(&self)

Make sure the BBSPresentation is closed - a better version would use the *Protocol and *Proof like in the rest of docknetwork/crypto library.

pub fn close(self) -> Self

Close the commitments by removing the random values.

pub fn verify( &self, setup: PublicSetup, issuer_certificate: PublicKeyG2<Bls12_381>, verifier_message: &BlsFr, ) -> Result<(), BBSPlusError>

Verify that:

• the signature can be verified by the certificate
• the signature matches the messages
• the message_strings match the messages
• the BBS signature matches the commitment_pub

pub fn message_string(&self, idx: usize) -> Option<String>

Returns the optional message_string at position idx. If Verify has not been called, this is not reliable!

pub fn get_sizes(&self) -> HashMap<&str, usize>

Returns the size of the BBS proof.

pub fn to_json(&self) -> String

Returns the JSON string.

Trait Implementations

impl CanonicalSerialize for BBSPresentation

fn serialize_with_mode<W: Write>( &self, writer: W, compress: Compress, ) -> Result<(), SerializationError>

The general serialize method that takes in customization flags.

fn serialized_size(&self, compress: Compress) -> usize

fn serialize_compressed<W>(&self, writer: W) -> Result<(), SerializationError>

where W: Write,

fn compressed_size(&self) -> usize

fn serialize_uncompressed<W>(&self, writer: W) -> Result<(), SerializationError>

where W: Write,

fn uncompressed_size(&self) -> usize

impl Clone for BBSPresentation

fn clone(&self) -> BBSPresentation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BBSPresentation

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

Formats the value using the given formatter.

impl Display for BBSPresentation

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

Formats the value using the given formatter.

impl Serialize for BBSPresentation

Thanks go to ChatGPT for this code…

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.