Initial Commit

packages/security-stack/crypto/crypto-hash/src/kdf/hkdf/hkdf.ts

@@ -0,0 +1,21 @@
+/**
+ * Public façade for HKDF. Routes through the primitive selector layer.
+ */
+
+import type { HashAlgorithm } from "../../hash/sha2/sha2.js";
+import { hkdf as selectedHkdf } from "../../primitives/hkdf/hkdf.select/hkdf.select.js";
+
+export interface HkdfOptions {
+    readonly salt: Uint8Array;
+    readonly info: Uint8Array;
+    readonly length: number;
+}
+
+/** HKDF-Extract-and-Expand over SHA-256/384/512. */
+export function hkdf(
+    algo: HashAlgorithm,
+    ikm: Uint8Array,
+    options: HkdfOptions
+): Uint8Array {
+    return selectedHkdf(algo, ikm, options);
+}