1 files changed, 9 insertions, 0 deletions
diff --git a/crypto/src/crypto/prng/BasicEntropySourceProvider.cs b/crypto/src/crypto/prng/BasicEntropySourceProvider.cs
index 31a8461f0..485cf25ab 100644
--- a/crypto/src/crypto/prng/BasicEntropySourceProvider.cs
+++ b/crypto/src/crypto/prng/BasicEntropySourceProvider.cs
@@ -62,6 +62,15 @@ namespace Org.BouncyCastle.Crypto.Prng
                 return SecureRandom.GetNextBytes(mSecureRandom, (mEntropySize + 7) / 8);
             }
 
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
+            int IEntropySource.GetEntropy(Span<byte> output)
+            {
+                int length = (mEntropySize + 7) / 8;
+                mSecureRandom.NextBytes(output[..length]);
+                return length;
+            }
+#endif
+
             int IEntropySource.EntropySize
             {
                 get { return mEntropySize; }