From bedfef49fe92db274371c86f82e5e10682f71614 Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Thu, 10 Jun 2021 13:35:09 +0200
Subject: [PATCH] Add getSignatureDigestPrefix utility method to SignatureUtils

---
 .../main/java/org/pgpainless/signature/SignatureUtils.java   | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pgpainless-core/src/main/java/org/pgpainless/signature/SignatureUtils.java b/pgpainless-core/src/main/java/org/pgpainless/signature/SignatureUtils.java
index 2e265537..b8117fad 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/signature/SignatureUtils.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/signature/SignatureUtils.java
@@ -32,6 +32,7 @@ import org.bouncycastle.openpgp.PGPSignature;
 import org.bouncycastle.openpgp.PGPSignatureGenerator;
 import org.bouncycastle.openpgp.PGPSignatureList;
 import org.bouncycastle.openpgp.operator.PGPContentSignerBuilder;
+import org.bouncycastle.util.encoders.Hex;
 import org.pgpainless.PGPainless;
 import org.pgpainless.algorithm.HashAlgorithm;
 import org.pgpainless.algorithm.SignatureType;
@@ -195,4 +196,8 @@ public class SignatureUtils {
         }
         return null;
     }
+
+    public static String getSignatureDigestPrefix(PGPSignature signature) {
+        return Hex.toHexString(signature.getDigestPrefix());
+    }
 }