public PseudoRandomFunctionTLSGeneric(string type)
{
if (type.Equals("MD5"))
{
_type = TLSGenericType.MD5;
}
else if (type.Equals("SHA1"))
{
_type = TLSGenericType.SHA1;
}
else if (type.Equals("SHA256"))
{
_type = TLSGenericType.SHA256;
}
else if (type.Equals("SHA384"))
{
_type = TLSGenericType.SHA384;
}
else if (type.Equals("SHA512"))
{
_type = TLSGenericType.SHA512;
}
else
{
throw new Exception("Unsupported PRF type");
}
}
public TLSGenericDeriveBytes(TLSGenericType type, byte[] secret, byte[] seed)
{
/* Here should be all supported types */
switch (type)
{
case TLSGenericType.MD5:
_hmac = new HMACGeneric(secret, type, 64);
break;
case TLSGenericType.SHA1:
_hmac = new HMACGeneric(secret, type, 64);
break;
case TLSGenericType.SHA256:
_hmac = new HMACGeneric(secret, type, 64);
break;
case TLSGenericType.SHA384:
_hmac = new HMACGeneric(secret, type, 128);
break;
case TLSGenericType.SHA512:
_hmac = new HMACGeneric(secret, type, 128);
break;
default:
throw new Exception("Unsupported TLSGenericType");
}
/* Set the seed as our parameter */
_seed = seed;
/* Reset the HMAC generators */
Reset();
}
public PseudoRandomFunctionTLSGeneric(string type)
{
if (type.Equals("MD5")) {
_type = TLSGenericType.MD5;
} else if (type.Equals("SHA1")) {
_type = TLSGenericType.SHA1;
} else if (type.Equals("SHA256")) {
_type = TLSGenericType.SHA256;
} else if (type.Equals("SHA384")) {
_type = TLSGenericType.SHA384;
} else if (type.Equals("SHA512")) {
_type = TLSGenericType.SHA512;
} else {
throw new Exception("Unsupported PRF type");
}
}
public HMACGeneric(byte[] key, TLSGenericType hashType, int blockSize)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
_hashType = hashType;
this._hashAlgorithm = CreateHashAlgorithm();
_blockSize = blockSize;
if (key.Length > blockSize)
{
KeyValue = _hashAlgorithm.ComputeHash(key);
}
else
{
KeyValue = (byte[])key.Clone();
}
HashSizeValue = _hashAlgorithm.HashSize;
}
public TLSGenericDeriveBytes(TLSGenericType type, byte[] secret, byte[] seed)
{
/* Here should be all supported types */
switch (type) {
case TLSGenericType.MD5:
_hmac = new HMACGeneric(secret, "MD5", 64);
break;
case TLSGenericType.SHA1:
_hmac = new HMACGeneric(secret, "SHA1", 64);
break;
case TLSGenericType.SHA256:
_hmac = new HMACGeneric(secret, "SHA256", 64);
break;
case TLSGenericType.SHA384:
_hmac = new HMACGeneric(secret, "SHA384", 128);
break;
case TLSGenericType.SHA512:
_hmac = new HMACGeneric(secret, "SHA512", 128);
break;
default:
throw new Exception("Unsupported TLSGenericType");
}
/* Set the seed as our parameter */
_seed = seed;
/* Reset the HMAC generators */
Reset();
}
