IHkdfContextBuilder

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Interface IHkdfContextBuilder

interface IHkdfContextBuilder

Extends com.amazon.apmf.IStandard Interface for building HKDF key derivation contexts.

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Methods

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hashAlgorithm()

IHkdfContextBuilder* hashAlgorithm(IDigestAlgorithm* hash)

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

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Parameters

hash

IDigestAlgorithm* — Required The hash algorithm to use.

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Returns

IHkdfContextBuilder* The HKDF context builder object.

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salt()

IHkdfContextBuilder* salt(u8[] salt)

Set the salt for the extraction step.

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Parameters

salt

u8[] — Required The salt to use in the extraction step.

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Returns

IHkdfContextBuilder* The HKDF context builder object.

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info()

IHkdfContextBuilder* info(u8[] info)

Set the context information for the expansion step.

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Parameters

info

u8[] — Required The context information for the expansion step.

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Returns

IHkdfContextBuilder* The HKDF context builder object.

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buildKeyDerivationContext()

IKeyDerivationContext* buildKeyDerivationContext(ISymmetricKey* key)

Build a context for deriving bits using HKDF.

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Parameters

key

ISymmetricKey* — Required The key to use as the input keying material (IKM).

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Returns

IKeyDerivationContext* The HKDF key derivation context object.

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