Bug/254 verify error

PgpCore.Tests/UnitTests/UnitTestsAsync.cs

@@ -884,6 +884,31 @@ public async Task VerifyFileAsync_ThrowIfEncrypted()
                 testFactory.Teardown();
             }
         }
+
+        [Theory]
+        [InlineData(KeyType.Generated)]
+        [InlineData(KeyType.Known)]
+        [InlineData(KeyType.KnownGpg)]
+        public async Task VerifyAsync_VerifyAndReadSignedFile(KeyType keyType)
+        {
+            // Arrange
+            TestFactory testFactory = new TestFactory();
+            await testFactory.ArrangeAsync(keyType, FileType.Known);
+            EncryptionKeys encryptionKeys = new EncryptionKeys(testFactory.PublicKeyFileInfo, testFactory.PrivateKeyFileInfo, testFactory.Password);
+            PGP pgp = new PGP(encryptionKeys);
+
+            // Act
+            await pgp.SignAsync(testFactory.ContentFileInfo, testFactory.SignedContentFileInfo);
+            bool verified = await pgp.VerifyAsync(testFactory.SignedContentFileInfo, testFactory.DecryptedContentFileInfo);
+
+            // Assert
+            Assert.True(testFactory.SignedContentFileInfo.Exists);
+            Assert.True(testFactory.DecryptedContentFileInfo.Exists);
+            Assert.True(verified);
+
+            // Teardown
+            testFactory.Teardown();
+        }
         #endregion File - FileInfo
 
         #region Stream

PgpCore/PGP.VerifyAsync.cs

@@ -63,8 +63,9 @@ public async Task<bool> VerifyAsync(Stream inputStream, Stream outputStream = nu
             if (outputStream == null)
                 outputStream = new MemoryStream();
 
-            using (StreamWriter contentStreamWriter = new StreamWriter(outputStream, outputStream.GetEncoding(), 1024, true))
+            using (StreamWriter contentStreamWriter = new StreamWriter(outputStream, inputStream.GetEncoding(), 1024, true))
             {
+                inputStream.Seek(0, SeekOrigin.Begin);
                 Stream encodedFile = PgpUtilities.GetDecoderStream(inputStream);
                 PgpObjectFactory factory = new PgpObjectFactory(encodedFile);
                 PgpObject pgpObject = factory.NextPgpObject();

PgpCore/PGP.VerifySync.cs

@@ -61,8 +61,9 @@ public bool Verify(Stream inputStream, Stream outputStream = null, bool throwIfE
             if (outputStream == null)
                 outputStream = new MemoryStream();
 
-            using (StreamWriter contentStreamWriter = new StreamWriter(outputStream, outputStream.GetEncoding(), 1024, true))
+            using (StreamWriter contentStreamWriter = new StreamWriter(outputStream, inputStream.GetEncoding(), 1024, true))
             {
+                inputStream.Seek(0, SeekOrigin.Begin);
                 Stream encodedFile = PgpUtilities.GetDecoderStream(inputStream);
                 PgpObjectFactory factory = new PgpObjectFactory(encodedFile);
                 PgpObject pgpObject = factory.NextPgpObject();

README.md

@@ -28,6 +28,7 @@ If you want a (basic) example of how you can use an Azure Function to encrypt/de
 ## Methods
 
 * [Generate Key](#generate-key)
+* [Inspect](#inspect)
 * [Encrypt](#encrypt)
 * [Sign](#sign)
 * [Clear Sign](#clear-sign)
@@ -56,6 +57,64 @@ using (PGP pgp = new PGP())
 	pgp.GenerateKey(@"C:\TEMP\Keys\public.asc", @"C:\TEMP\Keys\private.asc", "email@email.com", "password");
 }
 ```
+#### Inspect
+Inspect the provided file, stream or string to determine if it is encrypted or signed.
+
+[`gpg --list-packets "C:\TEMP\Content\encrypted.pgp"`](https://www.gnupg.org/gph/en/manual/x135.html)
+### Inspect File
+```C#
+// Load keys
+FileInfo publicKey = new FileInfo(@"C:\TEMP\Keys\public.asc");
+FileInfo privateKey = new FileInfo(@"C:\TEMP\Keys\private.asc");
+EncryptionKeys encryptionKeys = new EncryptionKeys(publicKey, privateKey, "password");
+
+// Reference input file
+FileInfo inputFile = new FileInfo(@"C:\TEMP\Content\encrypted.pgp");
+
+// Inspect
+PGP pgp = new PGP();
+PgpInspectResult result = await pgp.InspectAsync(inputFile);
+```
+### Inspect File
+```C#
+// Load keys
+FileInfo publicKey = new FileInfo(@"C:\TEMP\Keys\public.asc");
+FileInfo privateKey = new FileInfo(@"C:\TEMP\Keys\private.asc");
+EncryptionKeys encryptionKeys = new EncryptionKeys(publicKey, privateKey, "password");
+
+// Reference input file
+FileInfo inputFile = new FileInfo(@"C:\TEMP\Content\encrypted.pgp");
+
+// Inspect
+PGP pgp = new PGP();
+PgpInspectResult result = await pgp.InspectAsync(inputFile);
+```
+### Inspect Stream
+```C#
+// Load keys
+EncryptionKeys encryptionKeys;
+using (Stream publicKeyStream = new FileStream(@"C:\TEMP\Keys\public.asc", FileMode.Open))
+using (Stream privateKeyStream = new FileStream(@"C:\TEMP\Keys\private.asc", FileMode.Open))
+	encryptionKeys = new EncryptionKeys(publicKeyStream, privateKeyStream, "password");
+
+PGP pgp = new PGP(encryptionKeys);
+
+// Reference input stream
+using (FileStream inputFileStream = new FileStream(@"C:\TEMP\Content\encrypted.pgp", FileMode.Open))
+	// Inspect
+	PgpInspectResult result = await pgp.InspectAsync(inputFileStream);
+```
+### Inspect String
+```C#
+// Load keys
+string publicKey = File.ReadAllText(@"C:\TEMP\Keys\public.asc");
+string privatyeKey = File.ReadAllText(@"C:\TEMP\Keys\private.asc");
+EncryptionKeys encryptionKeys = new EncryptionKeys(publicKey, privateKey, "password");
+
+// Inspect
+PGP pgp = new PGP(encryptionKeys);
+PgpInspectResult result = await pgp.InspectAsync("String to inspect");
+```
 ### Encrypt
 Encrypt the provided file, stream or string using a public key.