public DiffHell(byte [] rawKey)
{
this.rawKey = rawKey; //400 //144
pks = new PUBLICKEYSTRUC();
pks.bType = rawKey[0]; //7 //6
pks.bVersion = rawKey[1]; //2
pks.reserved = BitConverter.ToUInt16(rawKey, 2); //0
pks.aiKeyAlg = BitConverter.ToUInt32(rawKey, 4); //43522
kb = (KeyBlob)pks.bType; //private //public
c = (Calg)pks.aiKeyAlg; //DH_EPHEM or DH_SF
if (kb != KeyBlob.PUBLICKEYBLOB && kb != KeyBlob.PRIVATEKEYBLOB)
{
throw new Exception("unsupported blob type");
}
dhpk = new DHPUBKEY();
//PRIV 0x32484400. This hex value is the ASCII encoding of "DH2."
//PUB 0x31484400. This hex value is the ASCII encoding of "DH1."
dhpk.magic = BitConverter.ToUInt32(rawKey, 8); //843596800 //826819584
//Number of bits in the prime modulus, P.
dhpk.bitlen = BitConverter.ToUInt32(rawKey, 12); //1024
uint byteLen = dhpk.bitlen / 8; //128
this.SetSizeAndPosition(dhpk.bitlen);
bool revBytes = true;
if (kb == KeyBlob.PRIVATEKEYBLOB)
{
P = Format.GetBytes(this.rawKey, ypPos, ypLen, revBytes);
G = Format.GetBytes(this.rawKey, gPos, gLen, revBytes);
X = Format.GetBytes(this.rawKey, xPos, xLen, revBytes);
}
if (kb == KeyBlob.PUBLICKEYBLOB)
{
Y = Format.GetBytes(this.rawKey, ypPos, ypLen, revBytes);
}
}
public DiffHell(byte [] rawKey)
{
this.rawKey = rawKey; //400 //144
pks = new PUBLICKEYSTRUC();
pks.bType = rawKey[0]; //7 //6
pks.bVersion = rawKey[1]; //2
pks.reserved = BitConverter.ToUInt16(rawKey, 2); //0
pks.aiKeyAlg = BitConverter.ToUInt32(rawKey, 4); //43522
kb = (KeyBlob) pks.bType; //private //public
c = (Calg) pks.aiKeyAlg; //DH_EPHEM or DH_SF
if(kb != KeyBlob.PUBLICKEYBLOB && kb != KeyBlob.PRIVATEKEYBLOB)
throw new Exception("unsupported blob type");
dhpk = new DHPUBKEY();
//PRIV 0x32484400. This hex value is the ASCII encoding of "DH2."
//PUB 0x31484400. This hex value is the ASCII encoding of "DH1."
dhpk.magic = BitConverter.ToUInt32(rawKey, 8); //843596800 //826819584
//Number of bits in the prime modulus, P.
dhpk.bitlen = BitConverter.ToUInt32(rawKey, 12); //1024
uint byteLen = dhpk.bitlen / 8; //128
this.SetSizeAndPosition(dhpk.bitlen);
bool revBytes = true;
if(kb == KeyBlob.PRIVATEKEYBLOB)
{
P = Format.GetBytes(this.rawKey, ypPos, ypLen, revBytes);
G = Format.GetBytes(this.rawKey, gPos, gLen, revBytes);
X = Format.GetBytes(this.rawKey, xPos, xLen, revBytes);
}
if(kb == KeyBlob.PUBLICKEYBLOB)
{
Y = Format.GetBytes(this.rawKey, ypPos, ypLen, revBytes);
}
}