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-rw-r--r--crypto/src/asn1/Asn1RelativeOid.cs21
-rw-r--r--crypto/src/asn1/DerObjectIdentifier.cs20
-rw-r--r--crypto/src/asn1/x9/X9ECParametersHolder.cs39
-rw-r--r--crypto/src/crypto/parameters/ECDomainParameters.cs16
-rw-r--r--crypto/src/crypto/parameters/Ed25519PrivateKeyParameters.cs25
-rw-r--r--crypto/src/crypto/parameters/Ed448PrivateKeyParameters.cs25
6 files changed, 35 insertions, 111 deletions
diff --git a/crypto/src/asn1/Asn1RelativeOid.cs b/crypto/src/asn1/Asn1RelativeOid.cs
index b7df4b75a..1d2ecb3df 100644
--- a/crypto/src/asn1/Asn1RelativeOid.cs
+++ b/crypto/src/asn1/Asn1RelativeOid.cs
@@ -137,8 +137,11 @@ namespace Org.BouncyCastle.Asn1
             return new PrimitiveDerEncoding(tagClass, tagNo, GetContents());
         }
 
-        private void DoOutput(MemoryStream bOut)
+        private byte[] GetContents() => Objects.EnsureSingletonInitialized(ref contents, identifier, CreateContents);
+
+        private static byte[] CreateContents(string identifier)
         {
+            MemoryStream bOut = new MemoryStream();
             OidTokenizer tok = new OidTokenizer(identifier);
             while (tok.HasMoreTokens)
             {
@@ -152,21 +155,7 @@ namespace Org.BouncyCastle.Asn1
                     WriteField(bOut, new BigInteger(token));
                 }
             }
-        }
-
-        private byte[] GetContents()
-        {
-            lock (this)
-            {
-                if (contents == null)
-                {
-                    MemoryStream bOut = new MemoryStream();
-                    DoOutput(bOut);
-                    contents = bOut.ToArray();
-                }
-
-                return contents;
-            }
+            return bOut.ToArray();
         }
 
         internal static Asn1RelativeOid CreatePrimitive(byte[] contents, bool clone)
diff --git a/crypto/src/asn1/DerObjectIdentifier.cs b/crypto/src/asn1/DerObjectIdentifier.cs
index 91e427d0b..12e8ea0a8 100644
--- a/crypto/src/asn1/DerObjectIdentifier.cs
+++ b/crypto/src/asn1/DerObjectIdentifier.cs
@@ -168,8 +168,11 @@ namespace Org.BouncyCastle.Asn1
             return new PrimitiveDerEncoding(tagClass, tagNo, GetContents());
         }
 
-        private void DoOutput(MemoryStream bOut)
+        private byte[] GetContents() => Objects.EnsureSingletonInitialized(ref contents, identifier, CreateContents);
+
+        private static byte[] CreateContents(string identifier)
         {
+            MemoryStream bOut = new MemoryStream();
             OidTokenizer tok = new OidTokenizer(identifier);
 
             string token = tok.NextToken();
@@ -197,21 +200,8 @@ namespace Org.BouncyCastle.Asn1
                     Asn1RelativeOid.WriteField(bOut, new BigInteger(token));
                 }
             }
-        }
-
-        private byte[] GetContents()
-        {
-            lock (this)
-            {
-                if (contents == null)
-                {
-                    MemoryStream bOut = new MemoryStream();
-                    DoOutput(bOut);
-                    contents = bOut.ToArray();
-                }
 
-                return contents;
-            }
+            return bOut.ToArray();
         }
 
         internal static DerObjectIdentifier CreatePrimitive(byte[] contents, bool clone)
diff --git a/crypto/src/asn1/x9/X9ECParametersHolder.cs b/crypto/src/asn1/x9/X9ECParametersHolder.cs
index ea72cc6ac..535dad9f7 100644
--- a/crypto/src/asn1/x9/X9ECParametersHolder.cs
+++ b/crypto/src/asn1/x9/X9ECParametersHolder.cs
@@ -1,4 +1,5 @@
 using Org.BouncyCastle.Math.EC;
+using Org.BouncyCastle.Utilities;
 
 namespace Org.BouncyCastle.Asn1.X9
 {
@@ -7,42 +8,12 @@ namespace Org.BouncyCastle.Asn1.X9
         private ECCurve m_curve;
         private X9ECParameters m_parameters;
 
-        public ECCurve Curve
-        {
-            get
-            {
-                lock (this)
-                {
-                    if (m_curve == null)
-                    {
-                        m_curve = CreateCurve();
-                    }
+        public ECCurve Curve => Objects.EnsureSingletonInitialized(ref m_curve, this, self => self.CreateCurve());
 
-                    return m_curve;
-                }
-            }
-        }
+        public X9ECParameters Parameters =>
+            Objects.EnsureSingletonInitialized(ref m_parameters, this, self => self.CreateParameters());
 
-        public X9ECParameters Parameters
-		{
-			get
-			{
-                lock (this)
-                {
-                    if (m_parameters == null)
-                    {
-                        m_parameters = CreateParameters();
-                    }
-
-                    return m_parameters;
-                }
-            }
-        }
-
-        protected virtual ECCurve CreateCurve()
-        {
-            return CreateParameters().Curve;
-        }
+        protected virtual ECCurve CreateCurve() => Parameters.Curve;
 
         protected abstract X9ECParameters CreateParameters();
 	}
diff --git a/crypto/src/crypto/parameters/ECDomainParameters.cs b/crypto/src/crypto/parameters/ECDomainParameters.cs
index b5ca183de..8bd58d018 100644
--- a/crypto/src/crypto/parameters/ECDomainParameters.cs
+++ b/crypto/src/crypto/parameters/ECDomainParameters.cs
@@ -81,20 +81,8 @@ namespace Org.BouncyCastle.Crypto.Parameters
             get { return h; }
         }
 
-        public BigInteger HInv
-        {
-            get
-            {
-                lock (this)
-                {
-                    if (hInv == null)
-                    {
-                        hInv = BigIntegers.ModOddInverseVar(n, h);
-                    }
-                    return hInv;
-                }
-            }
-        }
+        public BigInteger HInv =>
+            Objects.EnsureSingletonInitialized(ref hInv, this, self => BigIntegers.ModOddInverseVar(self.n, self.h));
 
         public byte[] GetSeed()
         {
diff --git a/crypto/src/crypto/parameters/Ed25519PrivateKeyParameters.cs b/crypto/src/crypto/parameters/Ed25519PrivateKeyParameters.cs
index 3a760afc1..4d2746065 100644
--- a/crypto/src/crypto/parameters/Ed25519PrivateKeyParameters.cs
+++ b/crypto/src/crypto/parameters/Ed25519PrivateKeyParameters.cs
@@ -76,22 +76,8 @@ namespace Org.BouncyCastle.Crypto.Parameters
         internal ReadOnlyMemory<byte> DataMemory => data;
 #endif
 
-        public Ed25519PublicKeyParameters GeneratePublicKey()
-        {
-            lock (data)
-            {
-                if (null == cachedPublicKey)
-                {
-#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
-                    cachedPublicKey = new Ed25519PublicKeyParameters(Ed25519.GeneratePublicKey(data));
-#else
-                    cachedPublicKey = new Ed25519PublicKeyParameters(Ed25519.GeneratePublicKey(data, 0));
-#endif
-                }
-
-                return cachedPublicKey;
-            }
-        }
+        public Ed25519PublicKeyParameters GeneratePublicKey() =>
+            Objects.EnsureSingletonInitialized(ref cachedPublicKey, data, CreatePublicKey);
 
         public void Sign(Ed25519.Algorithm algorithm, byte[] ctx, byte[] msg, int msgOff, int msgLen,
             byte[] sig, int sigOff)
@@ -140,6 +126,13 @@ namespace Org.BouncyCastle.Crypto.Parameters
             }
         }
 
+        private static Ed25519PublicKeyParameters CreatePublicKey(byte[] data) =>
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
+            new Ed25519PublicKeyParameters(Ed25519.GeneratePublicKey(data));
+#else
+            new Ed25519PublicKeyParameters(Ed25519.GeneratePublicKey(data, 0));
+#endif
+
         private static byte[] Validate(byte[] buf)
         {
             if (buf.Length != KeySize)
diff --git a/crypto/src/crypto/parameters/Ed448PrivateKeyParameters.cs b/crypto/src/crypto/parameters/Ed448PrivateKeyParameters.cs
index 544dbf32d..664716ae9 100644
--- a/crypto/src/crypto/parameters/Ed448PrivateKeyParameters.cs
+++ b/crypto/src/crypto/parameters/Ed448PrivateKeyParameters.cs
@@ -76,22 +76,8 @@ namespace Org.BouncyCastle.Crypto.Parameters
         internal ReadOnlyMemory<byte> DataMemory => data;
 #endif
 
-        public Ed448PublicKeyParameters GeneratePublicKey()
-        {
-            lock (data)
-            {
-                if (null == cachedPublicKey)
-                {
-#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
-                    cachedPublicKey = new Ed448PublicKeyParameters(Ed448.GeneratePublicKey(data));
-#else
-                    cachedPublicKey = new Ed448PublicKeyParameters(Ed448.GeneratePublicKey(data, 0));
-#endif
-                }
-
-                return cachedPublicKey;
-            }
-        }
+        public Ed448PublicKeyParameters GeneratePublicKey() =>
+            Objects.EnsureSingletonInitialized(ref cachedPublicKey, data, CreatePublicKey);
 
         public void Sign(Ed448.Algorithm algorithm, byte[] ctx, byte[] msg, int msgOff, int msgLen,
             byte[] sig, int sigOff)
@@ -132,6 +118,13 @@ namespace Org.BouncyCastle.Crypto.Parameters
             }
         }
 
+        private static Ed448PublicKeyParameters CreatePublicKey(byte[] data) =>
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
+            new Ed448PublicKeyParameters(Ed448.GeneratePublicKey(data));
+#else
+            new Ed448PublicKeyParameters(Ed448.GeneratePublicKey(data, 0));
+#endif
+
         private static byte[] Validate(byte[] buf)
         {
             if (buf.Length != KeySize)