public override byte [] EncryptValue(byte [] key)
{
//http://www.w3.org/TR/2002/REC-xmlenc-core-20021210/Overview.html
byte[] bs1 = _tdcsp.Key;
SHA1CryptoServiceProvider sha1Csp = new SHA1CryptoServiceProvider();
byte[] bs2 = sha1Csp.ComputeHash(key);
RNGCryptoServiceProvider rNGCryptoServiceProvider = new RNGCryptoServiceProvider();
byte[] bs3 = new byte[8];
rNGCryptoServiceProvider.GetBytes(bs3);
byte[] bs4 = new byte[(int)key.Length + 8];
_tdcsp.IV = bs3;
Buffer.BlockCopy(key, 0, bs4, 0, (int)key.Length);
Buffer.BlockCopy(bs2, 0, bs4, (int)key.Length, 8);
TripleDesNoPadding tdnp1 = new TripleDesNoPadding(_tdcsp);
byte [] bs5 = tdnp1.Encrypt(bs4);
byte[] bs6 = new byte[(int)bs3.Length + (int)bs5.Length];
Buffer.BlockCopy(bs3, 0, bs6, 0, (int)bs3.Length);
Buffer.BlockCopy(bs5, 0, bs6, (int)bs3.Length, (int)bs5.Length);
Array.Reverse(bs6, 0, bs6.Length);
_tdcsp.Key = bs1;
_tdcsp.IV = kwIv;
TripleDesNoPadding tdnp2 = new TripleDesNoPadding(_tdcsp);
byte [] cipher = tdnp2.Encrypt(bs6);
return cipher;
}
/// <summary>
/// Create a new Random Guid using Crypto APIs
/// </summary>
/// <returns></returns>
public static System.Guid NewCryptoGuid()
{
//create guid manually
byte[] guidbytes = new byte[16];
//use crypto apis to generate random bytes
OpenNETCF.Security.Cryptography.RNGCryptoServiceProvider rng = new OpenNETCF.Security.Cryptography.RNGCryptoServiceProvider();
rng.GetBytes(guidbytes);
//set version etc
MakeValidRandomGuid(guidbytes);
// create the new System.Guid object
return(new System.Guid(guidbytes));
}
/// <summary>
/// Create a new Random Guid using Crypto APIs
/// </summary>
/// <returns></returns>
public static System.Guid NewCryptoGuid()
{
//create guid manually
byte[] guidbytes = new byte[16];
//use crypto apis to generate random bytes
OpenNETCF.Security.Cryptography.RNGCryptoServiceProvider rng = new OpenNETCF.Security.Cryptography.RNGCryptoServiceProvider();
rng.GetBytes(guidbytes);
//set version etc
MakeValidRandomGuid(guidbytes);
// create the new System.Guid object
return new System.Guid(guidbytes);
}
