Struct NsAvidMScheme

pub struct NsAvidMScheme;

Dummy struct for namespaced AvidM scheme

Implementations

impl NsAvidMScheme

pub fn setup( recovery_threshold: usize, total_weights: usize, ) -> Result<NsAvidMParam, VidError>

Setup an instance for AVID-M scheme

pub fn commit( param: &NsAvidMParam, payload: &[u8], ns_table: impl IntoIterator<Item = Range<usize>>, ) -> Result<NsAvidMCommit, VidError>

Commit to a payload given namespace table. WARN: it assumes that the namespace table is well formed, i.e. ranges are non-overlapping and cover the whole payload.

pub fn ns_disperse( param: &NsAvidMParam, distribution: &[u32], payload: &[u8], ns_table: impl IntoIterator<Item = Range<usize>>, ) -> Result<(NsAvidMCommit, Vec<NsAvidMShare>), VidError>

Disperse a payload according to a distribution table and a namespace table. WARN: it assumes that the namespace table is well formed, i.e. ranges are non-overlapping and cover the whole payload.

pub fn verify_share( param: &NsAvidMParam, commit: &NsAvidMCommit, share: &NsAvidMShare, ) -> Result<Result<(), ()>, VidError>

Verify a namespaced share

pub fn recover( param: &NsAvidMParam, shares: &[NsAvidMShare], ) -> Result<Vec<u8>, VidError>

Recover the entire payload from enough share

pub fn ns_recover( param: &NsAvidMParam, ns_id: usize, shares: &[NsAvidMShare], ) -> Result<Vec<u8>, VidError>

Recover the payload for a given namespace. Given namespace ID should be valid for all shares, i.e. ns_commits and content have at least ns_id elements for all shares.

impl NsAvidMScheme

pub fn namespace_proof( param: &AvidMParam, payload: &[u8], ns_index: usize, ns_table: impl IntoIterator<Item = Range<usize>>, ) -> Result<NsProof, VidError>

Generate a proof of inclusion for a namespace payload.

pub fn verify_namespace_proof( param: &AvidMParam, commit: &NsAvidMCommit, proof: &NsProof, ) -> Result<Result<(), ()>, VidError>

Verify a namespace proof against a namespaced VID commitment.