diff --git a/LibHac/Crypto.cs b/LibHac/Crypto.cs
index ea4309a0..a059e277 100644
--- a/LibHac/Crypto.cs
+++ b/LibHac/Crypto.cs
@@ -142,6 +142,25 @@ namespace LibHac
             }
         }
 
+        public static bool Rsa2048Pkcs1Verify(byte[] data, byte[] signature, byte[] modulus)
+        {
+            byte[] hash;
+            using (SHA256 sha256 = SHA256.Create())
+            {
+                hash = sha256.ComputeHash(data);
+            }
+
+            using (var rsa = new RSACryptoServiceProvider())
+            {
+                rsa.ImportParameters(new RSAParameters() { Exponent = new byte[] { 1, 0, 1 }, Modulus = modulus });
+
+                var rsaFormatter = new RSAPKCS1SignatureDeformatter(rsa);
+                rsaFormatter.SetHashAlgorithm("SHA256");
+
+                return rsaFormatter.VerifySignature(hash, signature);
+            }
+        }
+
         public static byte[] DecryptTitleKey(byte[] titleKeyblock, RSAParameters rsaParams)
         {
 #if USE_RSA_CNG
diff --git a/LibHac/XciHeader.cs b/LibHac/XciHeader.cs
index 85c89faa..f79f7682 100644
--- a/LibHac/XciHeader.cs
+++ b/LibHac/XciHeader.cs
@@ -10,6 +10,26 @@ namespace LibHac
         private const string HeaderMagic = "HEAD";
         private const int EncryptedHeaderSize = 0x70;
 
+        private readonly byte[] _xciHeaderPubk =
+        {
+            0x98, 0xC7, 0x26, 0xB6, 0x0D, 0x0A, 0x50, 0xA7, 0x39, 0x21, 0x0A, 0xE3, 0x2F, 0xE4, 0x3E, 0x2E,
+            0x5B, 0xA2, 0x86, 0x75, 0xAA, 0x5C, 0xEE, 0x34, 0xF1, 0xA3, 0x3A, 0x7E, 0xBD, 0x90, 0x4E, 0xF7,
+            0x8D, 0xFA, 0x17, 0xAA, 0x6B, 0xC6, 0x36, 0x6D, 0x4C, 0x9A, 0x6D, 0x57, 0x2F, 0x80, 0xA2, 0xBC,
+            0x38, 0x4D, 0xDA, 0x99, 0xA1, 0xD8, 0xC3, 0xE2, 0x99, 0x79, 0x36, 0x71, 0x90, 0x20, 0x25, 0x9D,
+            0x4D, 0x11, 0xB8, 0x2E, 0x63, 0x6B, 0x5A, 0xFA, 0x1E, 0x9C, 0x04, 0xD1, 0xC5, 0xF0, 0x9C, 0xB1,
+            0x0F, 0xB8, 0xC1, 0x7B, 0xBF, 0xE8, 0xB0, 0xD2, 0x2B, 0x47, 0x01, 0x22, 0x6B, 0x23, 0xC9, 0xD0,
+            0xBC, 0xEB, 0x75, 0x6E, 0x41, 0x7D, 0x4C, 0x26, 0xA4, 0x73, 0x21, 0xB4, 0xF0, 0x14, 0xE5, 0xD9,
+            0x8D, 0xB3, 0x64, 0xEE, 0xA8, 0xFA, 0x84, 0x1B, 0xB8, 0xB8, 0x7C, 0x88, 0x6B, 0xEF, 0xCC, 0x97,
+            0x04, 0x04, 0x9A, 0x67, 0x2F, 0xDF, 0xEC, 0x0D, 0xB2, 0x5F, 0xB5, 0xB2, 0xBD, 0xB5, 0x4B, 0xDE,
+            0x0E, 0x88, 0xA3, 0xBA, 0xD1, 0xB4, 0xE0, 0x91, 0x81, 0xA7, 0x84, 0xEB, 0x77, 0x85, 0x8B, 0xEF,
+            0xA5, 0xE3, 0x27, 0xB2, 0xF2, 0x82, 0x2B, 0x29, 0xF1, 0x75, 0x2D, 0xCE, 0xCC, 0xAE, 0x9B, 0x8D,
+            0xED, 0x5C, 0xF1, 0x8E, 0xDB, 0x9A, 0xD7, 0xAF, 0x42, 0x14, 0x52, 0xCD, 0xE3, 0xC5, 0xDD, 0xCE,
+            0x08, 0x12, 0x17, 0xD0, 0x7F, 0x1A, 0xAA, 0x1F, 0x7D, 0xE0, 0x93, 0x54, 0xC8, 0xBC, 0x73, 0x8A,
+            0xCB, 0xAD, 0x6E, 0x93, 0xE2, 0x19, 0x72, 0x6B, 0xD3, 0x45, 0xF8, 0x73, 0x3D, 0x2B, 0x6A, 0x55,
+            0xD2, 0x3A, 0x8B, 0xB0, 0x8A, 0x42, 0xE3, 0x3D, 0xF1, 0x92, 0x23, 0x42, 0x2E, 0xBA, 0xCC, 0x9C,
+            0x9A, 0xC1, 0xDD, 0x62, 0x86, 0x9C, 0x2E, 0xE1, 0x2D, 0x6F, 0x62, 0x67, 0x51, 0x08, 0x0E, 0xCF
+        };
+
         public byte[] Signature { get; set; }
         public string Magic { get; set; }
         public int RomAreaStartPage { get; set; }
@@ -42,6 +62,8 @@ namespace LibHac
         public byte[] UppHash { get; set; }
         public ulong UppId { get; set; }
 
+        public Validity SignatureValidity { get; set; }
+
         public XciHeader(Keyset keyset, Stream stream)
         {
             var reader = new BinaryReader(stream, Encoding.Default, true);
@@ -52,6 +74,19 @@ namespace LibHac
                 throw new InvalidDataException("Invalid XCI file: Header magic invalid.");
             }
 
+            reader.BaseStream.Position = SignatureSize;
+            byte[] sigData = reader.ReadBytes(SignatureSize);
+            reader.BaseStream.Position = SignatureSize + 4;
+
+            if (Crypto.Rsa2048Pkcs1Verify(sigData, Signature, _xciHeaderPubk))
+            {
+                SignatureValidity = Validity.Valid;
+            }
+            else
+            {
+                SignatureValidity = Validity.Invalid;
+            }
+
             RomAreaStartPage = reader.ReadInt32();
             BackupAreaStartPage = reader.ReadInt32();
             byte keyIndex = reader.ReadByte();