diff options
Diffstat (limited to 'LibTSforge/Crypto/PhysStoreCrypto.cs')
| -rw-r--r-- | LibTSforge/Crypto/PhysStoreCrypto.cs | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/LibTSforge/Crypto/PhysStoreCrypto.cs b/LibTSforge/Crypto/PhysStoreCrypto.cs index b0acc2e..083841d 100644 --- a/LibTSforge/Crypto/PhysStoreCrypto.cs +++ b/LibTSforge/Crypto/PhysStoreCrypto.cs @@ -18,31 +18,31 @@ namespace LibTSforge.Crypto if (CryptoUtils.RSAVerifySignature(rsaKey, encAesKey, aesKeySig)) { - byte[] aesKey = CryptoUtils.RSADecrypt(rsaKey, encAesKey); - byte[] decData = CryptoUtils.AESDecrypt(br.ReadBytes((int)br.BaseStream.Length - 0x110), aesKey); - byte[] hmacKey = decData.Take(0x10).ToArray(); // SHA-1 salt on Vista - byte[] hmacSig = decData.Skip(0x10).Take(0x14).ToArray(); // SHA-1 hash on Vista - byte[] psData = decData.Skip(0x28).ToArray(); + throw new Exception("Failed to decrypt physical store."); + } + + byte[] aesKey = CryptoUtils.RSADecrypt(rsaKey, encAesKey); + byte[] decData = CryptoUtils.AESDecrypt(br.ReadBytes((int)br.BaseStream.Length - 0x110), aesKey); + byte[] hmacKey = decData.Take(0x10).ToArray(); // SHA-1 salt on Vista + byte[] hmacSig = decData.Skip(0x10).Take(0x14).ToArray(); // SHA-1 hash on Vista + byte[] psData = decData.Skip(0x28).ToArray(); - if (version != PSVersion.Vista) + if (version != PSVersion.Vista) + { + if (!CryptoUtils.HMACVerify(hmacKey, psData, hmacSig)) { - if (!CryptoUtils.HMACVerify(hmacKey, psData, hmacSig)) - { - throw new InvalidDataException("Failed to verify HMAC. Physical store is corrupt."); - } + throw new InvalidDataException("Failed to verify HMAC. Physical store is corrupt."); } - else + } + else + { + if (!CryptoUtils.SaltSHAVerify(hmacKey, psData, hmacSig)) { - if (!CryptoUtils.SaltSHAVerify(hmacKey, psData, hmacSig)) - { - throw new InvalidDataException("Failed to verify checksum. Physical store is corrupt."); - } + throw new InvalidDataException("Failed to verify checksum. Physical store is corrupt."); } - - return psData; } - throw new Exception("Failed to decrypt physical store."); + return psData; } public static byte[] EncryptPhysicalStore(byte[] data, bool production, PSVersion version) @@ -65,7 +65,7 @@ namespace LibTSforge.Crypto byte[] aesKeySig = CryptoUtils.RSASign(rsaKey, encAesKey); byte[] hmacSig = version != PSVersion.Vista ? CryptoUtils.HMACSign(hmacKey, data) : CryptoUtils.SaltSHASum(hmacKey, data); - byte[] decData = new byte[] { }; + byte[] decData = { }; decData = decData.Concat(hmacKey).Concat(hmacSig).Concat(BitConverter.GetBytes(0)).Concat(data).ToArray(); byte[] encData = CryptoUtils.AESEncrypt(decData, aesKey); |