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Class: Ed25519Keypair

An Ed25519 Keypair used for signing transactions.

Extends​

Constructors​

new Ed25519Keypair()​

new Ed25519Keypair(keypair?): Ed25519Keypair

Create a new Ed25519 keypair instance. Generate random keypair if no Ed25519Keypair is provided.

Parameters​

• keypair?: Ed25519KeypairData

Ed25519 keypair

Returns​

Ed25519Keypair

Overrides​

Keypair.constructor

Methods​

signingDigest()​

static signingDigest(bytes, intent): Uint8Array

Sign messages with a specific intent. By combining the message bytes with the intent before hashing. Returns the digest.

Parameters​

• bytes: Uint8Array

• intent: IntentScope

Returns​

Uint8Array

Inherited from​

Keypair.signingDigest

signWithIntent()​

signWithIntent(bytes, intent): Promise<SignatureWithBytes>

Sign messages with a specific intent. By combining the message bytes with the intent before hashing and signing, it ensures that a signed message is tied to a specific purpose and domain separator is provided

Parameters​

• bytes: Uint8Array

• intent: IntentScope

Returns​

Promise<SignatureWithBytes>

Inherited from​

Keypair.signWithIntent

signTransaction()​

signTransaction(bytes): Promise<SignatureWithBytes>

Signs provided transaction by calling signWithIntent() with a TransactionData provided as intent scope

Parameters​

• bytes: Uint8Array

Returns​

Promise<SignatureWithBytes>

Inherited from​

Keypair.signTransaction

signPersonalMessage()​

signPersonalMessage(bytes): Promise<object>

Signs provided personal message by calling signWithIntent() with a PersonalMessage provided as intent scope

Parameters​

• bytes: Uint8Array

Returns​

Promise<object>

bytes​

bytes: string

signature​

signature: string

Inherited from​

Keypair.signPersonalMessage

toIotaAddress()​

toIotaAddress(): string

Returns​

string

Inherited from​

Keypair.toIotaAddress

getKeyScheme()​

getKeyScheme(): SignatureScheme

Get the key scheme of the keypair ED25519

Returns​

SignatureScheme

Overrides​

Keypair.getKeyScheme

generate()​

static generate(): Ed25519Keypair

Generate a new random Ed25519 keypair

Returns​

Ed25519Keypair

fromSecretKey()​

static fromSecretKey(secretKey, options?): Ed25519Keypair

Create a Ed25519 keypair from a raw secret key byte array, also known as seed. This is NOT the private scalar which is result of hashing and bit clamping of the raw secret key.

Parameters​

• secretKey: string | Uint8Array

secret key as a byte array or Bech32 secret key string

• options?

• options.skipValidation?: boolean

Returns​

Ed25519Keypair

Throws​

error if the provided secret key is invalid and validation is not skipped.

getPublicKey()​

getPublicKey(): Ed25519PublicKey

The public key for this Ed25519 keypair

Returns​

Ed25519PublicKey

Overrides​

Keypair.getPublicKey

getSecretKey()​

getSecretKey(): string

The Bech32 secret key string for this Ed25519 keypair

Returns​

string

Overrides​

Keypair.getSecretKey

sign()​

sign(data): Promise<Uint8Array>

Return the signature for the provided data using Ed25519.

Parameters​

• data: Uint8Array

Returns​

Promise<Uint8Array>

Overrides​

Keypair.sign

deriveKeypair()​

static deriveKeypair(mnemonics, path?): Ed25519Keypair

Derive Ed25519 keypair from mnemonics and path. The mnemonics must be normalized and validated against the english wordlist.

If path is none, it will default to m/44'/4218'/0'/0'/0', otherwise the path must be compliant to SLIP-0010 in form m/44'/4218'/{account_index}'/{change_index}'/{address_index}'.

Parameters​

• mnemonics: string

• path?: string

Returns​

Ed25519Keypair

deriveKeypairFromSeed()​

static deriveKeypairFromSeed(seedHex, path?): Ed25519Keypair

Derive Ed25519 keypair from mnemonicSeed and path.

If path is none, it will default to m/44'/4218'/0'/0'/0', otherwise the path must be compliant to SLIP-0010 in form m/44'/4218'/{account_index}'/{change_index}'/{address_index}'.

Parameters​

• seedHex: string

• path?: string

Returns​

Ed25519Keypair