1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/src/openpgp/PgpUtilities.cs b/crypto/src/openpgp/PgpUtilities.cs
index 65c07b2e2..f982ae459 100644
--- a/crypto/src/openpgp/PgpUtilities.cs
+++ b/crypto/src/openpgp/PgpUtilities.cs
@@ -347,6 +347,7 @@ namespace Org.BouncyCastle.Bcpg.OpenPgp
             return MakeKey(algorithm, keyBytes);
         }
 
+#if !PORTABLE
         /// <summary>Write out the passed in file as a literal data packet.</summary>
         public static void WriteFileToLiteralData(
             Stream		output,
@@ -384,6 +385,7 @@ namespace Org.BouncyCastle.Bcpg.OpenPgp
 			pOut.Close();
 			inputStream.Close();
 		}
+#endif
 
 		private const int ReadAhead = 60;
 
@@ -488,5 +490,18 @@ namespace Org.BouncyCastle.Bcpg.OpenPgp
                 throw new PgpException("unknown wrap algorithm: " + encAlgorithm);
             }
         }
+
+        internal static byte[] GenerateIV(int length, SecureRandom random)
+        {
+            byte[] iv = new byte[length];
+            random.NextBytes(iv);
+            return iv;
+        }
+
+        internal static S2k GenerateS2k(HashAlgorithmTag hashAlgorithm, int s2kCount, SecureRandom random)
+        {
+            byte[] iv = GenerateIV(8, random);
+            return new S2k(hashAlgorithm, iv, s2kCount);
+        }
     }
 }