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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent, Inc. and Node.js contributors. All rights reserved. MIT license.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
import { op_node_hkdf, op_node_hkdf_async } from "ext:core/ops";
import {
validateFunction,
validateInteger,
validateString,
} from "ext:deno_node/internal/validators.mjs";
import {
ERR_CRYPTO_INVALID_DIGEST,
ERR_INVALID_ARG_TYPE,
ERR_OUT_OF_RANGE,
hideStackFrames,
} from "ext:deno_node/internal/errors.ts";
import {
kHandle,
toBuf,
validateByteSource,
} from "ext:deno_node/internal/crypto/util.ts";
import {
createSecretKey,
KeyObject,
} from "ext:deno_node/internal/crypto/keys.ts";
import type { BinaryLike } from "ext:deno_node/internal/crypto/types.ts";
import { kMaxLength } from "ext:deno_node/internal/buffer.mjs";
import {
isAnyArrayBuffer,
isArrayBufferView,
} from "ext:deno_node/internal/util/types.ts";
import { isKeyObject } from "ext:deno_node/internal/crypto/_keys.ts";
const validateParameters = hideStackFrames((hash, key, salt, info, length) => {
validateString(hash, "digest");
key = prepareKey(key);
validateByteSource(salt, "salt");
validateByteSource(info, "info");
salt = new Uint8Array(toBuf(salt));
info = new Uint8Array(toBuf(info));
validateInteger(length, "length", 0, kMaxLength);
if (info.byteLength > 1024) {
throw new ERR_OUT_OF_RANGE(
"info",
"must not contain more than 1024 bytes",
info.byteLength,
);
}
return {
hash,
key,
salt,
info,
length,
};
});
function prepareKey(key: BinaryLike | KeyObject) {
if (isKeyObject(key)) {
return key;
}
if (isAnyArrayBuffer(key)) {
return createSecretKey(new Uint8Array(key as unknown as ArrayBufferLike));
}
key = toBuf(key as string);
if (!isArrayBufferView(key)) {
throw new ERR_INVALID_ARG_TYPE(
"ikm",
[
"string",
"SecretKeyObject",
"ArrayBuffer",
"TypedArray",
"DataView",
"Buffer",
],
key,
);
}
return createSecretKey(key);
}
export function hkdf(
hash: string,
key: BinaryLike | KeyObject,
salt: BinaryLike,
info: BinaryLike,
length: number,
callback: (err: Error | null, derivedKey: ArrayBuffer | undefined) => void,
) {
({ hash, key, salt, info, length } = validateParameters(
hash,
key,
salt,
info,
length,
));
validateFunction(callback, "callback");
hash = hash.toLowerCase();
op_node_hkdf_async(hash, key[kHandle], salt, info, length)
.then((okm) => callback(null, okm.buffer))
.catch((err) => callback(new ERR_CRYPTO_INVALID_DIGEST(err), undefined));
}
export function hkdfSync(
hash: string,
key: BinaryLike | KeyObject,
salt: BinaryLike,
info: BinaryLike,
length: number,
) {
({ hash, key, salt, info, length } = validateParameters(
hash,
key,
salt,
info,
length,
));
hash = hash.toLowerCase();
const okm = new Uint8Array(length);
try {
op_node_hkdf(hash, key[kHandle], salt, info, okm);
} catch (e) {
throw new ERR_CRYPTO_INVALID_DIGEST(e);
}
return okm.buffer;
}
export default {
hkdf,
hkdfSync,
};
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