public LoadModule()
{
SecureType = AisSecureType.NONE;
MagicNum = SecureLoadMagic.LOADMOD_MAGIC;
certRsaObject = null;
rsaObject = null;
certEncryptionKey = null;
customerEncryptionKey = null;
}
public LoadModule(AisSecureType secureType, SecureLoadMagic magic, String encKey, String rsaKeyFileName) : this()
{
String currHashAlgorithmString = "SHA1"; // Default hash algorithm
SecureType = secureType;
MagicNum = magic;
// Get the encryption key
customerEncryptionKey = new Byte[16];
CEKInitialValue = new Byte[16];
if (encKey.Length != 32)
{
throw new ArgumentException("AES Encryption Key is wrong length!");
}
for (int j = 0; j < encKey.Length; j += 2)
{
customerEncryptionKey[(j >> 1)] = Convert.ToByte(encKey.Substring(j, 2), 16);
}
// Generate IV as encrypted version of AES Key
using (MemoryStream ms = new MemoryStream(CEKInitialValue))
{
Aes myAES = new AesManaged();
myAES.KeySize = 128;
myAES.Mode = CipherMode.ECB;
myAES.Padding = PaddingMode.None;
ICryptoTransform encryptor = myAES.CreateEncryptor(customerEncryptionKey, new Byte[16]);
CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
cs.Write(customerEncryptionKey, 0, customerEncryptionKey.Length);
}
// Get RSA key
rsaObject = RSAKey.LoadFromFile(rsaKeyFileName);
if (rsaObject == null)
{
throw new ArgumentException("RSA key loading failed!");
}
// Update the hash algo string if RSA key size is 2048 bits
if (rsaObject.KeySize == 2048)
{
currHashAlgorithmString = "SHA256";
currHashAlgorithmValue = SHA_Algorithm.SHA256;
}
try
{
currHashAlgorithm = HashAlgorithm.Create(currHashAlgorithmString);
}
catch (Exception e)
{
Console.WriteLine("Invalid Hash Algorithm Selected. Exception message: {0}.", e.Message);
throw e;
}
}
public LoadModule(AisSecureType secureType, SecureLoadMagic magic, String encKey, String rsaKeyFileName)
: this()
{
String currHashAlgorithmString = "SHA1"; // Default hash algorithm
SecureType = secureType;
MagicNum = magic;
// Get the encryption key
customerEncryptionKey = new Byte[16];
CEKInitialValue = new Byte[16];
if (encKey.Length != 32)
{
throw new ArgumentException("AES Encryption Key is wrong length!");
}
for (int j=0; j<encKey.Length; j+=2)
{
customerEncryptionKey[(j>>1)] = Convert.ToByte(encKey.Substring(j,2),16);
}
// Generate IV as encrypted version of AES Key
using (MemoryStream ms = new MemoryStream(CEKInitialValue))
{
Aes myAES = new AesManaged();
myAES.KeySize = 128;
myAES.Mode = CipherMode.ECB;
myAES.Padding = PaddingMode.None;
ICryptoTransform encryptor = myAES.CreateEncryptor(customerEncryptionKey, new Byte[16]);
CryptoStream cs = new CryptoStream(ms,encryptor,CryptoStreamMode.Write);
cs.Write(customerEncryptionKey,0,customerEncryptionKey.Length);
}
// Get RSA key
rsaObject = RSAKey.LoadFromFile(rsaKeyFileName);
if (rsaObject == null)
{
throw new ArgumentException("RSA key loading failed!");
}
// Update the hash algo string if RSA key size is 2048 bits
if (rsaObject.KeySize == 2048)
{
currHashAlgorithmString = "SHA256";
currHashAlgorithmValue = SHA_Algorithm.SHA256;
}
try
{
currHashAlgorithm = HashAlgorithm.Create(currHashAlgorithmString);
}
catch (Exception e)
{
Console.WriteLine("Invalid Hash Algorithm Selected. Exception message: {0}.",e.Message);
throw e;
}
}
public LoadModule(AisSecureType secureType, SecureLoadMagic magic)
: this()
{
SecureType = secureType;
MagicNum = magic;
}
public LoadModule()
{
SecureType = AisSecureType.NONE;
MagicNum = SecureLoadMagic.LOADMOD_MAGIC;
certRsaObject = null;
rsaObject = null;
certEncryptionKey = null;
customerEncryptionKey = null;
}
public LoadModule(AisSecureType secureType, SecureLoadMagic magic) : this()
{
SecureType = secureType;
MagicNum = magic;
}
