Force the use of jdk8+ version of Bouncy Castle library

build.gradle

@@ -14,6 +14,7 @@
  */
 
 
+import groovy.transform.CompileStatic
 import groovy.transform.Memoized
 import net.ltgt.gradle.errorprone.CheckSeverity
 
@@ -147,7 +148,20 @@ allprojects {
     }
   }
 
-  dependencies { errorprone 'com.google.errorprone:error_prone_core' }
+  dependencies {
+    components.all(BouncyCastleCapability)
+    errorprone 'com.google.errorprone:error_prone_core'
+  }
+
+  configurations.all {
+    resolutionStrategy.capabilitiesResolution.withCapability('org.bouncycastle:bcprov-jdk18on') {
+      selectHighestVersion()
+    }
+    resolutionStrategy.capabilitiesResolution.withCapability('org.bouncycastle:bcpkix-jdk18on') {
+      selectHighestVersion()
+    }
+  }
+
 
   apply plugin: 'com.diffplug.spotless'
   spotless {
@@ -1044,6 +1058,29 @@ dependencies {
   errorprone 'com.google.errorprone:error_prone_core'
 }
 
+@CompileStatic
+class BouncyCastleCapability implements ComponentMetadataRule {
+  void execute(ComponentMetadataContext context) {
+    context.details.with {
+      if (id.group == "org.bouncycastle") {
+        if(id.name == "bcprov-jdk15on") {
+          allVariants {
+            it.withCapabilities {
+              it.addCapability("org.bouncycastle", "bcprov-jdk18on", "0")
+            }
+          }
+        } else if(id.name == "bcpkix-jdk15on") {
+          allVariants {
+            it.withCapabilities {
+              it.addCapability("org.bouncycastle", "bcpkix-jdk18on", "0")
+            }
+          }
+        }
+      }
+    }
+  }
+}
+
 distributions {
   main {
     contents {

ethereum/p2p/src/main/java/org/hyperledger/besu/ethereum/p2p/rlpx/framing/Framer.java

@@ -16,7 +16,6 @@
 
 import static io.netty.buffer.ByteBufUtil.hexDump;
 import static io.netty.buffer.Unpooled.wrappedBuffer;
-import static org.bouncycastle.pqc.math.linearalgebra.ByteUtils.xor;
 import static org.hyperledger.besu.ethereum.p2p.rlpx.RlpxFrameConstants.LENGTH_FRAME_SIZE;
 import static org.hyperledger.besu.ethereum.p2p.rlpx.RlpxFrameConstants.LENGTH_MAX_MESSAGE_FRAME;
 
@@ -396,6 +395,23 @@ private static int padding16(final int size) {
     return pad == 0 ? 0 : 16 - pad;
   }
 
+  /**
+   * Compute the bitwise XOR of two arrays of bytes. The arrays have to be of same length. No length
+   * checking is performed.
+   *
+   * @param x1 the first array
+   * @param x2 the second array
+   * @return x1 XOR x2
+   */
+  private static byte[] xor(final byte[] x1, final byte[] x2) {
+    byte[] out = new byte[x1.length];
+
+    for (int i = x1.length - 1; i >= 0; i--) {
+      out[i] = (byte) (x1[i] ^ x2[i]);
+    }
+    return out;
+  }
+
   @FormatMethod
   private static FramingException error(final String s, final Object... params) {
     return new FramingException(String.format(s, params));

gradle/verification-metadata.xml

@@ -3481,6 +3481,14 @@
             <sha256 value="16a278d9d5bfb0a79cb2df4588279de24ec18a4adeb8cd36a884ad2f6fb733cb" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="org.bouncycastle" name="bcpkix-jdk18on" version="1.76">
+         <artifact name="bcpkix-jdk18on-1.76.jar">
+            <sha256 value="935a388854c329f9a6f32708f30c90045d2f91294fa687281273145d4cf9834a" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="bcpkix-jdk18on-1.76.pom">
+            <sha256 value="f621ec7eaccd323e7d2fbcaf0ffd8720cf6ea842a65c2bd30e830588912c946e" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="org.bouncycastle" name="bcprov-jdk15on" version="1.68">
          <artifact name="bcprov-jdk15on-1.68.jar">
             <sha256 value="f732a46c8de7e2232f2007c682a21d1f4cc8a8a0149b6b7bd6aa1afdc65a0f8d" origin="Generated by Gradle"/>
@@ -3505,6 +3513,14 @@
             <sha256 value="c6ccf55fbb9ea10c62bb20622737993099d4774688eaa0d4a45e1eedaadb9134" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="org.bouncycastle" name="bcprov-jdk18on" version="1.76">
+         <artifact name="bcprov-jdk18on-1.76.jar">
+            <sha256 value="fda85d777aaae168015860b23a77cad9b8d3a1d5c904fda875313427bd560179" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="bcprov-jdk18on-1.76.pom">
+            <sha256 value="153009592d3b8f8349f97b8f1538bef0c83341b026918a2327dace22334ffee8" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="org.bouncycastle" name="bcutil-jdk18on" version="1.75">
          <artifact name="bcutil-jdk18on-1.75.jar">
             <sha256 value="027f36578c1ffdf08878c1cc2aa1e191f4b9da119c1e8f113299c53f298fa664" origin="Generated by Gradle"/>
@@ -3513,6 +3529,14 @@
             <sha256 value="1e60c25685e521d9eba47713df575f8e5171cac6562a243f99616bbf5a8e7b06" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="org.bouncycastle" name="bcutil-jdk18on" version="1.76">
+         <artifact name="bcutil-jdk18on-1.76.jar">
+            <sha256 value="1a65ad02958223a3f31373bd72eea942cafd1b1877a3ed0b492c2487e77c3c27" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="bcutil-jdk18on-1.76.pom">
+            <sha256 value="de5ed3ca118c693d190c5c46d89e0380bb5d77acd8a43b5190403e76483f81ed" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="org.checkerframework" name="checker-compat-qual" version="2.5.5">
          <artifact name="checker-compat-qual-2.5.5.jar">
             <sha256 value="11d134b245e9cacc474514d2d66b5b8618f8039a1465cdc55bbc0b34e0008b7a" origin="Generated by Gradle"/>

gradle/versions.gradle

@@ -151,7 +151,7 @@ dependencyManagement {
 
     dependency 'org.awaitility:awaitility:4.2.0'
 
-    dependencySet(group: 'org.bouncycastle', version: '1.75') {
+    dependencySet(group: 'org.bouncycastle', version: '1.76') {
       entry'bcpkix-jdk18on'
       entry'bcprov-jdk18on'
     }