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MmrPeaks

miden_client_cli::crypto

Struct MmrPeaks

pub struct MmrPeaks { /* private fields */ }

Implementations§

impl MmrPeaks

pub fn new(forest: Forest, peaks: Vec<Word>) -> Result<MmrPeaks, MmrError>

Returns new MmrPeaks instantiated from the provided vector of peaks and the number of leaves in the underlying MMR.

§Errors

Returns an error if the number of leaves and the number of peaks are inconsistent.

pub fn forest(&self) -> Forest

Returns the underlying forest (a set of mountain range peaks).

pub fn num_leaves(&self) -> usize

Returns a count of leaves in the underlying MMR.

pub fn num_peaks(&self) -> usize

Returns the number of peaks of the underlying MMR.

pub fn peaks(&self) -> &[Word]

Returns the list of peaks of the underlying MMR.

pub fn get_peak(&self, peak_idx: usize) -> Result<&Word, MmrError>

Returns the peak by the provided index.

§Errors

Returns an error if the provided peak index is greater or equal to the current number of peaks in the Mmr.

pub fn into_parts(self) -> (Forest, Vec<Word>)

Converts this MmrPeaks into its components: number of leaves (represented as a Forest) and a vector of peaks of the underlying MMR.

pub fn hash_peaks(&self) -> Word

Hashes the peaks.

The procedure will:

Flatten and pad the peaks to a vector of Felts.
Hash the vector of Felts.

pub fn verify(&self, value: Word, opening: MmrProof) -> Result<(), MmrError>

Verifies the Merkle opening proof.

§Errors

Returns an error if:

provided opening proof is invalid.
Mmr root value computed using the provided leaf value differs from the actual one.

pub fn flatten_and_pad_peaks(&self) -> Vec<BaseElement>

Flattens and pads the peaks to make hashing inside of the Miden VM easier.

The procedure will:

Flatten the vector of Words into a vector of Felts.
Pad the peaks with ZERO to an even number of words, this removes the need to handle RPO padding.
Pad the peaks to a minimum length of 16 words, which reduces the constant cost of hashing.

Trait Implementations§

impl Clone for MmrPeaks

fn clone(&self) -> MmrPeaks

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for MmrPeaks

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

Formats the value using the given formatter. Read more

impl Default for MmrPeaks

fn default() -> MmrPeaks

Returns new MmrPeaks instantiated from an empty vector of peaks and 0 leaves.

impl From<&MmrPeaks> for PartialMmr

fn from(peaks: &MmrPeaks) -> PartialMmr

Converts to this type from the input type.

impl From<&PartialMmr> for MmrPeaks

fn from(partial_mmr: &PartialMmr) -> MmrPeaks

Converts to this type from the input type.

impl From<MmrPeaks> for PartialMmr

fn from(peaks: MmrPeaks) -> PartialMmr

Converts to this type from the input type.

impl From<MmrPeaks> for Vec<Word>

fn from(peaks: MmrPeaks) -> Vec<Word>

Converts to this type from the input type.

impl From<PartialMmr> for MmrPeaks

fn from(partial_mmr: PartialMmr) -> MmrPeaks

Converts to this type from the input type.

impl PartialEq for MmrPeaks

fn eq(&self, other: &MmrPeaks) -> bool

Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for MmrPeaks

impl StructuralPartialEq for MmrPeaks

Auto Trait Implementations§

impl Freeze for MmrPeaks

impl RefUnwindSafe for MmrPeaks

impl Send for MmrPeaks

impl Sync for MmrPeaks

impl Unpin for MmrPeaks

impl UnsafeUnpin for MmrPeaks

impl UnwindSafe for MmrPeaks

Blanket Implementations§

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