Merge branch 'main' into zkbesu

crypto/algorithms/src/main/java/org/hyperledger/besu/crypto/AbstractSECP256.java

@@ -233,6 +233,11 @@ public abstract class AbstractSECP256 implements SignatureAlgorithm {
     return PROVIDER;
   }
 
+  @Override
+  public ECDomainParameters getCurve() {
+    return curve;
+  }
+
   /**
    * Gets K calculator.
    *

crypto/algorithms/src/main/java/org/hyperledger/besu/crypto/SignatureAlgorithm.java

@@ -20,6 +20,7 @@ import java.util.function.UnaryOperator;
 
 import org.apache.tuweni.bytes.Bytes;
 import org.apache.tuweni.bytes.Bytes32;
+import org.bouncycastle.crypto.params.ECDomainParameters;
 import org.bouncycastle.math.ec.ECPoint;
 
 /** The interface Signature algorithm. */
@@ -124,6 +125,13 @@ public interface SignatureAlgorithm {
    */
   String getCurveName();
 
+  /**
+   * Bouncy castle ECDomainParameters representing the curve.
+   *
+   * @return instance of ECDomainParameters
+   */
+  ECDomainParameters getCurve();
+
   /**
    * Create secp private key.
    *