AzelusLightvale-ComfyUI-ARG-Toolkit/web/docs/HKDFExpand_Verify.md

HKDF (Expand Only) Key Verification

Verifies a key derived with the HKDF "expand" step.

Source library: cryptography

Overview

This node re-derives a key using the same input parameters as the HKDF (Expand Only) Key Derivation node and compares it in constant time to an expected key.

Parameters

• message: The original pseudorandom key (PRK) as a BYTESLIKE object.
• expected_key: The BYTESLIKE key to check against.
• length: The length of the derived key in bytes. Must match the original derivation.
• algorithm: The original hash function used for the HMAC operation.
• info: (Optional) The original application-specific context information.

Outputs

• verified_status: A BOOLEAN that is True if the re-derived key matches the expected key, and False otherwise.