PublicKey

Represents a public key used in asymmetric cryptography. Public keys are typically generated using the PrivateKey.getPublicKey or AsymmetricKeyBuilder.buildPublicFromDer methods. This class also provides methods to export and check the properties of public keys.

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Extends

• BaseCryptoClass

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Constructors

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new PublicKey()

new PublicKey(): PublicKey

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Returns

PublicKey

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Methods

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exportDer()

exportDer(): Promise<ArrayBuffer>

Export the public key as a DER-encoded blob. The public key is exported in SubjectPublicKeyInfo format as described in RFC 5280, Section 4.1.

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Throws

• AccessDeniedError If the key is not exportable.

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Returns

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

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hasPurpose()

hasPurpose(purpose: KeyPurpose): boolean

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

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Parameters

purpose

KeyPurpose The purpose to check.

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Throws

• InvalidArgumentError If the argument is not a valid purpose.

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Returns

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