crypto: add oaepLabel option

The label acts as the "L" input to the RSA-OAEP algorithm.

PR-URL: https://github.com/nodejs/node/pull/29489
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/lib/internal/crypto/cipher.js b/lib/internal/crypto/cipher.js
index 20ca1454c8..48c5ba23c7 100644
--- a/lib/internal/crypto/cipher.js
+++ b/lib/internal/crypto/cipher.js
@@ -50,10 +50,16 @@ function rsaFunctionFor(method, defaultPadding, keyType) {
         preparePrivateKey(options) :
         preparePublicOrPrivateKey(options);
     const padding = options.padding || defaultPadding;
-    const { oaepHash } = options;
+    const { oaepHash, oaepLabel } = 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);
+    if (oaepLabel !== undefined && !isArrayBufferView(oaepLabel)) {
+      throw new ERR_INVALID_ARG_TYPE('options.oaepLabel',
+                                     ['Buffer', 'TypedArray', 'DataView'],
+                                     oaepLabel);
+    }
+    return method(data, format, type, passphrase, buffer, padding, oaepHash,
+                  oaepLabel);
   };
 }