Struct MultiKeySignature 

pub struct MultiKeySignature { /* private fields */ }

A multi-key signature containing signatures from multiple signers.

Implementations

impl MultiKeySignature

pub fn new(signatures: Vec<(u8, AnySignature)>) -> AptosResult<Self>

Creates a new multi-key signature from individual signatures.

Arguments

• signatures - Vec of (signer_index, signature) pairs

Errors

Returns AptosError::InvalidSignature if:

• No signatures are provided
• More than 32 signatures are provided
• A signer index is out of bounds (>= 32)
• Duplicate signer indices are present

pub fn num_signatures(&self) -> usize

Returns the number of signatures.

pub fn signatures(&self) -> &[(u8, AnySignature)]

Returns the individual signatures with their indices.

pub fn bitmap(&self) -> &[u8; 4]

Returns the signer bitmap.

pub fn has_signature(&self, index: u8) -> bool

Checks if a particular index signed.

pub fn to_bytes(&self) -> Vec<u8>

Serializes to bytes, matching the on-chain BCS layout of MultiKeyAuthenticator { signatures: Vec<AnySignature>, signatures_bitmap: BitVec }.

Wire layout: ULEB128(num_sigs) || BCS(AnySignature)... || BCS(BitVec) where BCS(BitVec) = ULEB128(num_bitmap_bytes) || bitmap_bytes.

pub fn from_bytes(bytes: &[u8]) -> AptosResult<Self>

Creates from bytes.

Errors

Returns AptosError::InvalidSignature if:

• The bytes are too short (fewer than 6 bytes: 1 num_sigs byte + a 1-byte BitVec ULEB128 length prefix + 4 bitmap bytes)
• The number of signatures is invalid (0 or > 32)
• The bitmap doesn’t match the number of signatures
• The bytes are too short for the expected structure
• Any signature variant byte is invalid
• Any signature length or data is invalid

Trait Implementations

impl Clone for MultiKeySignature

fn clone(&self) -> MultiKeySignature

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MultiKeySignature

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

Formats the value using the given formatter.

impl Display for MultiKeySignature

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

Formats the value using the given formatter.

impl Eq for MultiKeySignature

impl PartialEq for MultiKeySignature

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MultiKeySignature