HmacContext
Represents an HMAC (Hash-based Message Authentication Code) context. This class provides functionality for creating and verifying HMAC signatures.
Extends
BaseCryptoClass
Methods
sign()
sign(
message):Promise<ArrayBuffer>
Sign a message using the HMAC context.
Parameters
message
ArrayBuffer
The message to be signed.
Returns
Promise<ArrayBuffer>
A promise that resolves to the HMAC signature as an ArrayBuffer.
Throws
AccessDeniedError If the key lacks the KeyPurpose.SIGN purpose.
verify()
verify(
message,tag):Promise<boolean>
Verify the authenticity of a message using the HMAC context.
Parameters
message
ArrayBuffer
The original message to verify.
tag
ArrayBuffer
The HMAC tag (signature) to verify against the message.
Returns
Promise<boolean>
A promise that resolves to true if the message is authentic, false otherwise.
Throws
AccessDeniedError If the key lacks the KeyPurpose.VERIFY purpose.
Last updated: Oct 02, 2025
