5.3.3

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cyberchef",
-  "version": "5.3.2",
+  "version": "5.3.3",
   "description": "The Cyber Swiss Army Knife for encryption, encoding, compression and data analysis.",
   "author": "n1474335 <n1474335@gmail.com>",
   "homepage": "https://gchq.github.io/CyberChef",

src/core/operations/PublicKey.js

@@ -124,10 +124,17 @@ const PublicKey = {
         }
 
         // Signature fields
-        if (r.ASN1HEX.dump(certSig).indexOf("SEQUENCE") === 0) { // DSA or ECDSA
+        let breakoutSig = false;
+        try {
+            breakoutSig = r.ASN1HEX.dump(certSig).indexOf("SEQUENCE") === 0;
+        } catch (err) {
+            // Error processing signature, output without further breakout
+        }
+
+        if (breakoutSig) { // DSA or ECDSA
             sigStr = "  r:              " + PublicKey._formatByteStr(r.ASN1HEX.getDecendantHexVByNthList(certSig, 0, [0]), 16, 18) + "\n" +
                 "  s:              " + PublicKey._formatByteStr(r.ASN1HEX.getDecendantHexVByNthList(certSig, 0, [1]), 16, 18) + "\n";
-        } else { // RSA
+        } else { // RSA or unknown
             sigStr = "  Signature:      " + PublicKey._formatByteStr(certSig, 16, 18) + "\n";
         }