public static unsafe string verifyText(string src, IPrivKey key)
{
byte[] srcb = cp1251.GetBytes(src);
fixed(byte *psrc = srcb)
{
sbyte *pdst = (sbyte *)IntPtr.Zero;
int pndst = 0;
int rc = Crypt_Verify(psrc, srcb.Length, &pdst, ref pndst, key.getPKey());
if (rc != 0)
{
throw (new IPrivException(rc));
}
return(new string(pdst, 0, pndst, cp1251));
}
}
public static unsafe string signText(string src, IPrivKey key)
{
const int max_length = 2048;
sbyte * tmp = stackalloc sbyte[max_length];
byte[] bsrc = cp1251.GetBytes(src);
int rc;
fixed(byte *psrc = bsrc)
rc = Crypt_Sign(psrc, bsrc.Length, tmp, max_length, key.getPKey());
if (rc < 0)
{
throw (new IPrivException(rc));
}
return(new string(tmp, 0, rc, cp1251));
}
public static unsafe IPrivKey openPublicKey(string path, uint keyserial)
{
IPrivKey k = new IPrivKey();
byte[] bpath = new byte[path.Length + 1];//zero-terminated string
cp1251.GetBytes(path, 0, path.Length, bpath, 0);
fixed(byte *ppath = bpath)
{
int rc = Crypt_OpenPublicKeyFromFile(0, ppath, keyserial, k.getPKey(), null);
if (rc != 0)
{
throw (new IPrivException(rc));
}
}
return(k);
}
public static unsafe IPrivKey openSecretKey(string path, string passwd)
{
IPrivKey k = new IPrivKey();
byte[] bpath = new byte[path.Length + 1]; //zero-terminated string
byte[] bpasswd = new byte[passwd.Length + 1]; //zero-terminated string
cp1251.GetBytes(path, 0, path.Length, bpath, 0);
cp1251.GetBytes(passwd, 0, passwd.Length, bpasswd, 0);
fixed(byte *ppath = bpath)
fixed(byte *ppasswd = bpasswd)
{
int rc = Crypt_OpenSecretKeyFromFile(0, ppath, ppasswd, k.getPKey());
if (rc != 0)
{
throw (new IPrivException(rc));
}
}
return(k);
}
public static unsafe void closeKey(IPrivKey key)
{
Crypt_CloseKey(key.getPKey());
}