Struct AsyncIdentityAssertionSigner

pub struct AsyncIdentityAssertionSigner { /* private fields */ }

An AsyncIdentityAssertionSigner extends the AsyncSigner interface to add zero or more identity assertions to a C2PA Manifest that is being produced.

Implementations

impl AsyncIdentityAssertionSigner

pub fn new(signer: Box<dyn AsyncRawSigner + Sync + Send>) -> Self

Create an AsyncIdentityAssertionSigner wrapping the provided AsyncRawSigner instance.

pub fn add_identity_assertion(&mut self, iab: AsyncIdentityAssertionBuilder)

Add an AsyncIdentityAssertionBuilder to be used when signing the next Manifest.

IMPORTANT: When sign() is called, the list of AsyncIdentityAssertionBuilders will be cleared.

Trait Implementations

impl AsyncSigner for AsyncIdentityAssertionSigner

fn sign<'life0, 'async_trait>( &'life0 self, data: Vec<u8>, ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Returns a new byte array which is a signature over the original.

fn alg(&self) -> SigningAlg

Returns the algorithm of the Signer.

fn certs(&self) -> Result<Vec<Vec<u8>>>

Returns the certificates as a Vec containing a Vec of DER bytes for each certificate.

fn reserve_size(&self) -> usize

Returns the size in bytes of the largest possible expected signature. Signing will fail if the result of the sign function is larger than this value.

fn ocsp_val<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Option<Vec<u8>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

OCSP response for the signing cert if available This is the only C2PA supported cert revocation method. By pre-querying the value for a your signing cert the value can be cached taking pressure off of the CA (recommended by C2PA spec)

fn time_authority_url(&self) -> Option<String>

URL for time authority to time stamp the signature

fn timestamp_request_headers(&self) -> Option<Vec<(String, String)>>

Additional request headers to pass to the time stamp authority.

fn timestamp_request_body(&self, message: &[u8]) -> Result<Vec<u8>>

fn send_timestamp_request<'life0, 'life1, 'async_trait>( &'life0 self, message: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = Option<Result<Vec<u8>>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Request RFC 3161 timestamp to be included in the manifest data structure.

fn async_raw_signer(&self) -> Option<Box<&dyn AsyncRawSigner>>

If this struct also implements or wraps AsyncRawSigner, it should return a reference to that trait implementation.

fn dynamic_assertions(&self) -> Vec<Box<dyn AsyncDynamicAssertion>>

Returns a list of dynamic assertions that should be included in the manifest.

fn direct_cose_handling(&self) -> bool

If this returns true the sign function is responsible for for direct handling of the COSE structure.