crypto: extend RSA-OAEP support with oaepHash

This adds an oaepHash option to asymmetric encryption which allows
users to specify a hash function when using OAEP padding. This
feature is required for interoperability with WebCrypto applications.

PR-URL: https://github.com/nodejs/node/pull/28335
Fixes: https://github.com/nodejs/node/issues/25756
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/internal/crypto/cipher.js b/lib/internal/crypto/cipher.js
index e2fe291526..34507dd157 100644
--- a/lib/internal/crypto/cipher.js
+++ b/lib/internal/crypto/cipher.js
@@ -50,7 +50,10 @@ function rsaFunctionFor(method, defaultPadding, keyType) {
         preparePrivateKey(options) :
         preparePublicOrPrivateKey(options);
     const padding = options.padding || defaultPadding;
-    return method(data, format, type, passphrase, buffer, padding);
+    const { oaepHash } = options;
+    if (oaepHash !== undefined && typeof oaepHash !== 'string')
+      throw new ERR_INVALID_ARG_TYPE('options.oaepHash', 'string', oaepHash);
+    return method(data, format, type, passphrase, buffer, padding, oaepHash);
   };
 }