HkdfContextBuilder

Provides support for building HKDF key derivation contexts.

Extends

• BaseCryptoClass

Accessors

hashAlgorithm

Set Signature

set hashAlgorithm(hash): void

Set the hash algorithm to use with HMAC (e.g., SHA-256).

Parameters

hash

DigestAlgorithm

The hash algorithm to use.

Returns

void

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info

Set Signature

set info(info): void

Set the context information for the expansion step.

Parameters

info

ArrayBuffer

The context information for the expansion step.

Returns

void

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salt

Set Signature

set salt(salt): void

Set the salt for the extraction step.

Parameters

salt

ArrayBuffer

The salt to use in the extraction step.

Returns

void

Methods

buildKeyDerivationContext()

buildKeyDerivationContext(key): KeyDerivationContext

Build a context for deriving bits using HKDF.

Parameters

key

SymmetricKey

The key to use as the input keying material (IKM).

Returns

KeyDerivationContext

The HKDF key derivation context object.

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Last updated: Oct 02, 2025