Struct Ed25519SingleKeyAccount 

pub struct Ed25519SingleKeyAccount { /* private fields */ }

Available on crate feature ed25519 only.

An Ed25519 account using the modern SingleKey authenticator format.

This account type uses the SingleSender > SingleKey > AnyPublicKey::Ed25519 authenticator path, which is the modern unified format recommended for new implementations.

Note: This produces a DIFFERENT address than Ed25519Account for the same private key because it uses scheme ID 2 instead of 0.

Authentication Key Derivation

The authentication key is derived as:

auth_key = SHA3-256(BCS(AnyPublicKey::Ed25519) || 0x02)

Where BCS(AnyPublicKey::Ed25519) = 0x00 || ULEB128(32) || public_key_bytes

Example

use aptos_sdk::account::Ed25519SingleKeyAccount;

// Generate a new random account
let account = Ed25519SingleKeyAccount::generate();
println!("Address: {}", account.address());

Implementations

impl Ed25519SingleKeyAccount

pub fn generate() -> Self

Generates a new random Ed25519 SingleKey account.

pub fn from_private_key(private_key: Ed25519PrivateKey) -> Self

Creates an account from a private key.

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

Creates an account from private key bytes.

Errors

Returns an error if the bytes are not a valid Ed25519 private key (must be exactly 32 bytes).

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

Creates an account from a private key hex string.

Errors

This function will return an error if:

• The hex string is invalid or cannot be decoded
• The decoded bytes are not a valid Ed25519 private key

pub fn from_mnemonic(mnemonic: &str, index: u32) -> AptosResult<Self>

Available on crate feature mnemonic only.

Creates an account from a BIP-39 mnemonic phrase.

Uses the standard Aptos derivation path: m/44'/637'/0'/0'/index'

Errors

Returns an error if the mnemonic phrase is invalid or if key derivation fails.

pub fn address(&self) -> AccountAddress

Returns the account address.

pub fn public_key(&self) -> &Ed25519PublicKey

Returns the public key.

pub fn private_key(&self) -> &Ed25519PrivateKey

Returns a reference to the private key.

pub fn sign_message(&self, message: &[u8]) -> Ed25519Signature

Signs a message and returns the Ed25519 signature.

Trait Implementations

impl Account for Ed25519SingleKeyAccount

fn address(&self) -> AccountAddress

Returns the account address.

fn authentication_key(&self) -> AuthenticationKey

Returns the authentication key.

fn sign(&self, message: &[u8]) -> AptosResult<Vec<u8>>

Signs a message and returns the signature bytes.

fn public_key_bytes(&self) -> Vec<u8>

Returns the public key bytes.

fn signature_scheme(&self) -> u8

Returns the scheme identifier for this account type.

impl Clone for Ed25519SingleKeyAccount

fn clone(&self) -> Ed25519SingleKeyAccount

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Ed25519SingleKeyAccount

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

Formats the value using the given formatter.