fix(ext/node): initial `crypto.createPublicKey()` support (#22509)

Closes #21807

Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>

1 files changed, 27 insertions, 1 deletions

diff --git a/tests/unit_node/crypto/crypto_key_test.ts b/tests/unit_node/crypto/crypto_key_test.ts
index 6dae79336..9b8224cd1 100644
--- a/tests/unit_node/crypto/crypto_key_test.ts
+++ b/tests/unit_node/crypto/crypto_key_test.ts
@@ -2,7 +2,9 @@
 
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 import {
+  createHmac,
   createPrivateKey,
+  createPublicKey,
   createSecretKey,
   generateKeyPair,
   generateKeyPairSync,
@@ -12,7 +14,6 @@ import {
 import { promisify } from "node:util";
 import { Buffer } from "node:buffer";
 import { assertEquals, assertThrows } from "@std/assert/mod.ts";
-import { createHmac } from "node:crypto";
 
 const RUN_SLOW_TESTS = Deno.env.get("SLOW_TESTS") === "1";
 
@@ -240,3 +241,28 @@ Deno.test("createPrivateKey ec", function () {
   assertEquals(key.asymmetricKeyType, "ec");
   assertEquals(key.asymmetricKeyDetails?.namedCurve, "p256");
 });
+
+const rsaPublicKey = Deno.readTextFileSync(
+  new URL("../testdata/rsa_public.pem", import.meta.url),
+);
+
+Deno.test("createPublicKey() RSA", () => {
+  const key = createPublicKey(rsaPublicKey);
+  assertEquals(key.type, "public");
+  assertEquals(key.asymmetricKeyType, "rsa");
+  assertEquals(key.asymmetricKeyDetails?.modulusLength, 2048);
+  assertEquals(key.asymmetricKeyDetails?.publicExponent, 65537n);
+});
+
+// openssl ecparam -name prime256v1 -genkey -noout -out a.pem
+// openssl ec -in a.pem -pubout -out b.pem
+const ecPublicKey = Deno.readTextFileSync(
+  new URL("../testdata/ec_prime256v1_public.pem", import.meta.url),
+);
+
+Deno.test("createPublicKey() EC", function () {
+  const key = createPublicKey(ecPublicKey);
+  assertEquals(key.type, "public");
+  assertEquals(key.asymmetricKeyType, "ec");
+  assertEquals(key.asymmetricKeyDetails?.namedCurve, "p256");
+});