PrivateKey

Represents a private key used in asymmetric cryptography. Private keys are typically generated using an AsymmetricKeyBuilder or any of the subclasses inheriting from it. This class also provides methods to export and check the properties of private keys.

​

Extends

• BaseCryptoClass

​

Constructors

​

new PrivateKey()

new PrivateKey(): PrivateKey

​

Returns

PrivateKey

​

Methods

​

exportDer()

exportDer(): Promise<ArrayBuffer>

Export the private key as a DER-encoded blob. Private keys are exported in PKCS#8 format.

​

Returns

Promise<ArrayBuffer> Promise<ArrayBuffer> A promise that resolves to an ArrayBuffer containing the DER-encoded key.

---

​

getPublicKey()

getPublicKey(): PublicKey

Derive the corresponding public key from this private key.

​

Throws

• InvalidArgumentError If the contents of the private key are invalid.

​

Returns

PublicKey PublicKey The derived public key.

---

​

hasPurpose()

hasPurpose(purpose: KeyPurpose): boolean

Check if a specific purpose is enabled for this private key.

​

Parameters

purpose

KeyPurpose The key purpose to check.

​

Throws

• InvalidArgumentError If the argument is not a valid purpose.

​

Returns

boolean boolean True if the specified purpose is enabled, false otherwise.