test: reduce length in crypto keygen tests

PR-URL: https://github.com/nodejs/node/pull/49221
Refs: https://github.com/nodejs/node/issues/49202
Refs: https://github.com/nodejs/node/issues/41206
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

test/parallel/test-crypto-keygen-async-elliptic-curve-jwk-rsa.js

@@ -12,7 +12,7 @@ const {
 // Test async elliptic curve key generation with 'jwk' encoding and RSA.
 {
   generateKeyPair('rsa', {
-    modulusLength: 4096,
+    modulusLength: 1024,
     publicKeyEncoding: {
       format: 'jwk'
     },

test/parallel/test-crypto-keygen-dh-classic.js

@@ -12,7 +12,7 @@ const {
 // Test classic Diffie-Hellman key generation.
 {
   generateKeyPair('dh', {
-    primeLength: 1024
+    primeLength: 512
   }, common.mustSucceed((publicKey, privateKey) => {
     assert.strictEqual(publicKey.type, 'public');
     assert.strictEqual(publicKey.asymmetricKeyType, 'dh');

test/parallel/test-crypto-keygen-empty-passphrase-no-error.js

@@ -12,7 +12,7 @@ const {
 // Passing an empty passphrase string should not throw ERR_OSSL_CRYPTO_MALLOC_FAILURE even on OpenSSL 3.
 // Regression test for https://github.com/nodejs/node/issues/41428.
 generateKeyPair('rsa', {
-  modulusLength: 4096,
+  modulusLength: 1024,
   publicKeyEncoding: {
     type: 'spki',
     format: 'pem'

test/parallel/test-crypto-keygen-invalid-parameter-encoding-dsa.js

@@ -13,7 +13,7 @@ const {
 // Test invalid parameter encoding.
 {
   assert.throws(() => generateKeyPairSync('dsa', {
-    modulusLength: 4096,
+    modulusLength: 1024,
     publicKeyEncoding: {
       format: 'jwk'
     },