Struct AppCheckerSignature 

pub struct AppCheckerSignature<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> { /* private fields */ }

Checker that validates a correct signature credential.

This checker provides the scaffolding on top of a hasher (&H) and a verifier (&S) for a given TbfFooterV2CredentialsType.

This assumes the TbfFooterV2CredentialsType data format only contains the signature (i.e. the data length of the credential in the TBF footer is the same as SIGNATURE_LEN).

Implementations

impl<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

pub fn new( hasher: &'a H, verifier: &'a S, hash_buffer: &'static mut [u8; HASH_LEN], signature_buffer: &'static mut [u8; SIGNATURE_LEN], credential_type: TbfFooterV2CredentialsType, ) -> AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

Trait Implementations

impl<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> AppCredentialsPolicy<'static> for AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

fn require_credentials(&self) -> bool

Whether credentials are required or not.

fn check_credentials( &self, credentials: TbfFooterV2Credentials, binary: &'static [u8], ) -> Result<(), (ErrorCode, TbfFooterV2Credentials, &'static [u8])>

Check a particular credential.

fn set_client(&self, client: &'static dyn AppCredentialsPolicyClient<'static>)

Set the client which gets notified after the credential check completes.

impl<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> ClientData<HASH_LEN> for AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

fn add_mut_data_done( &self, _result: Result<(), ErrorCode>, _data: SubSliceMut<'static, u8>, )

Called when the data has been added to the digest.

fn add_data_done( &self, result: Result<(), ErrorCode>, data: SubSlice<'static, u8>, )

Called when the data has been added to the digest.

impl<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> ClientHash<HASH_LEN> for AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

fn hash_done( &self, result: Result<(), ErrorCode>, digest: &'static mut [u8; HASH_LEN], )

Called when a digest is computed.

impl<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> ClientVerify<HASH_LEN, SIGNATURE_LEN> for AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

fn verification_done( &self, result: Result<bool, ErrorCode>, hash: &'static mut [u8; HASH_LEN], signature: &'static mut [u8; SIGNATURE_LEN], )

Called when the verification is complete.

impl<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> ClientVerify<HASH_LEN> for AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

fn verification_done( &self, _result: Result<bool, ErrorCode>, _compare: &'static mut [u8; HASH_LEN], )

Called when a verification is computed.

impl<'a, S: SignatureVerify<'static, HASH_LEN, SIGNATURE_LEN> + SelectKey<'a>, H: DigestDataHash<'a, HASH_LEN>, const HASH_LEN: usize, const SIGNATURE_LEN: usize> SelectKeyClient for AppCheckerSignature<'a, S, H, HASH_LEN, SIGNATURE_LEN>

fn get_key_count_done(&self, count: usize)

Called when the number of keys available is known.

fn select_key_done( &self, _index: usize, metadata: usize, error: Result<(), ErrorCode>, )

Called when the specified key is active and ready to use for the next cryptographic operation.