Struct Bls12381PrivateKey 

pub struct Bls12381PrivateKey { /* private fields */ }

Available on crate feature bls only.

A BLS12-381 private key.

Implementations

impl Bls12381PrivateKey

pub fn generate() -> Self

Generates a new random BLS12-381 private key.

Panics

This function will not panic in normal operation. The internal expect is a defensive check for the blst library’s key generation, which only fails if the input keying material (IKM) is less than 32 bytes. Since we always provide exactly 32 bytes of random data, this cannot fail.

pub fn from_seed(seed: &[u8]) -> AptosResult<Self>

Creates a private key from a 32-byte seed.

This uses the BLS key derivation function to derive a key from the seed.

Errors

Returns an error if the seed is less than 32 bytes or if key derivation fails.

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

Creates a private key from raw bytes.

Errors

Returns an error if the bytes length is not 32 bytes or if the key deserialization fails.

pub fn from_hex(hex_str: &str) -> AptosResult<Self>

Creates a private key from a hex string.

Errors

Returns an error if hex decoding fails or if the resulting bytes are invalid.

pub fn to_bytes(&self) -> [u8; 32]

Returns the private key as bytes.

pub fn to_hex(&self) -> String

Returns the private key as a hex string.

pub fn public_key(&self) -> Bls12381PublicKey

Returns the corresponding public key.

pub fn sign(&self, message: &[u8]) -> Bls12381Signature

Signs a message and returns the signature.

pub fn create_proof_of_possession(&self) -> Bls12381ProofOfPossession

Creates a proof of possession for this key pair.

A proof of possession (PoP) proves ownership of the private key and prevents rogue key attacks in aggregate signature schemes.

Trait Implementations

impl Clone for Bls12381PrivateKey

fn clone(&self) -> Bls12381PrivateKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Bls12381PrivateKey

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

Formats the value using the given formatter.

impl Signer for Bls12381PrivateKey

type Signature = Bls12381Signature

The signature type produced by this signer.

fn sign(&self, message: &[u8]) -> Bls12381Signature

Signs the given message and returns a signature.

fn public_key(&self) -> Bls12381PublicKey

Returns the public key corresponding to this signer.

impl Zeroize for Bls12381PrivateKey

fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.