createKeyPairFromPrivateKeyBytes

createKeyPairFromPrivateKeyBytes(bytes, extractable?): Promise<CryptoKeyPair>

Given a private key represented as a 32-byte Uint8Array, creates an Ed25519 public/private key pair for use with other methods in this package that accept CryptoKey objects.

Parameters

Parameter	Type	Description
`bytes`	`ReadonlyUint8Array`	32 bytes that represent the private key
`extractable?`	`boolean`	Setting this to `true` makes it possible to extract the bytes of the private key using the `crypto.subtle.exportKey()` API. Defaults to `false`.

Example

import { createKeyPairFromPrivateKeyBytes } from '@solana/keys';
 
const { privateKey, publicKey } = await createKeyPairFromPrivateKeyBytes(new Uint8Array([...]));

This can be useful when you have a private key but not the corresponding public key or when you need to derive key pairs from seeds. For instance, the following code snippet derives a key pair from the hash of a message.

import { getUtf8Encoder } from '@solana/codecs-strings';
import { createKeyPairFromPrivateKeyBytes } from '@solana/keys';
 
const message = getUtf8Encoder().encode('Hello, World!');
const seed = new Uint8Array(await crypto.subtle.digest('SHA-256', message));
 
const derivedKeypair = await createKeyPairFromPrivateKeyBytes(seed);

createKeyPairFromPrivateKeyBytes

Parameters

Returns

Example

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