private byte[] encrypt(byte[] plain, byte[][] _iv)
{
if (passphrase == null)
{
return(plain);
}
if (cipher == null)
{
cipher = genCipher();
}
byte[] iv = _iv[0] = new byte[cipher.getIVSize()];
if (random == null)
{
random = genRandom();
}
random.fill(iv, 0, iv.Length);
byte[] key = genKey(passphrase, iv);
byte[] encoded = plain;
int bsize = cipher.getBlockSize();
if (encoded.Length % bsize != 0)
{
byte[] foo = new byte[(encoded.Length / bsize + 1) * bsize];
Array.Copy(encoded, 0, foo, 0, encoded.Length);
encoded = foo;
}
try
{
cipher.init(Cipher.ENCRYPT_MODE, key, iv);
cipher.update(encoded, 0, encoded.Length, encoded, 0);
}
catch (Exception e)
{
Console.WriteLine(e);
}
return(encoded);
}
bool decrypt_rsa()
{
// byte[] p_array;
// byte[] q_array;
// byte[] dmp1_array;
// byte[] dmq1_array;
// byte[] iqmp_array;
try
{
byte[] plain;
if (encrypted)
{
if (keytype == OPENSSH)
{
cipher.init(Cipher.DECRYPT_MODE, key, iv);
plain = new byte[encoded_data.Length];
cipher.update(encoded_data, 0, encoded_data.Length, plain, 0);
}
else if (keytype == FSECURE)
{
for (int i = 0; i < iv.Length; i++)
{
iv[i] = 0;
}
cipher.init(Cipher.DECRYPT_MODE, key, iv);
plain = new byte[encoded_data.Length];
cipher.update(encoded_data, 0, encoded_data.Length, plain, 0);
}
else
{
return(false);
}
}
else
{
if (n_array != null)
{
return(true);
}
plain = encoded_data;
}
if (keytype == FSECURE)
{ // FSecure
Buffer buf = new Buffer(plain);
int foo = buf.getInt();
if (plain.Length != foo + 4)
{
return(false);
}
e_array = buf.getMPIntBits();
d_array = buf.getMPIntBits();
n_array = buf.getMPIntBits();
byte[] u_array = buf.getMPIntBits();
p_array = buf.getMPIntBits();
q_array = buf.getMPIntBits();
return(true);
}
int index = 0;
int Length = 0;
if (plain[index] != 0x30)
{
return(false);
}
index++; // SEQUENCE
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
if (plain[index] != 0x02)
{
return(false);
}
index++; // INTEGER
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
index += Length;
//System.out.println("int: len="+Length);
//System.out.print(Integer.toHexString(plain[index-1]&0xff)+":");
//System.out.println("");
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
n_array = new byte[Length];
Array.Copy(plain, index, n_array, 0, Length);
index += Length;
/*
* System.out.println("int: N len="+Length);
* for(int i=0; i<n_array.Length; i++){
* System.out.print(Integer.toHexString(n_array[i]&0xff)+":");
* }
* System.out.println("");
*/
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
e_array = new byte[Length];
Array.Copy(plain, index, e_array, 0, Length);
index += Length;
/*
* System.out.println("int: E len="+Length);
* for(int i=0; i<e_array.Length; i++){
* System.out.print(Integer.toHexString(e_array[i]&0xff)+":");
* }
* System.out.println("");
*/
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
d_array = new byte[Length];
Array.Copy(plain, index, d_array, 0, Length);
index += Length;
/*
* System.out.println("int: D len="+Length);
* for(int i=0; i<d_array.Length; i++){
* System.out.print(Integer.toHexString(d_array[i]&0xff)+":");
* }
* System.out.println("");
*/
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
p_array = new byte[Length];
Array.Copy(plain, index, p_array, 0, Length);
index += Length;
/*
* System.out.println("int: P len="+Length);
* for(int i=0; i<p_array.Length; i++){
* System.out.print(Integer.toHexString(p_array[i]&0xff)+":");
* }
* System.out.println("");
*/
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
q_array = new byte[Length];
Array.Copy(plain, index, q_array, 0, Length);
index += Length;
/*
* System.out.println("int: q len="+Length);
* for(int i=0; i<q_array.Length; i++){
* System.out.print(Integer.toHexString(q_array[i]&0xff)+":");
* }
* System.out.println("");
*/
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
dmp1_array = new byte[Length];
Array.Copy(plain, index, dmp1_array, 0, Length);
index += Length;
/*
* System.out.println("int: dmp1 len="+Length);
* for(int i=0; i<dmp1_array.Length; i++){
* System.out.print(Integer.toHexString(dmp1_array[i]&0xff)+":");
* }
* System.out.println("");
*/
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
dmq1_array = new byte[Length];
Array.Copy(plain, index, dmq1_array, 0, Length);
index += Length;
/*
* System.out.println("int: dmq1 len="+Length);
* for(int i=0; i<dmq1_array.Length; i++){
* System.out.print(Integer.toHexString(dmq1_array[i]&0xff)+":");
* }
* System.out.println("");
*/
index++;
Length = plain[index++] & 0xff;
if ((Length & 0x80) != 0)
{
int foo = Length & 0x7f; Length = 0;
while (foo-- > 0)
{
Length = (Length << 8) + (plain[index++] & 0xff);
}
}
iqmp_array = new byte[Length];
Array.Copy(plain, index, iqmp_array, 0, Length);
index += Length;
/*
* System.out.println("int: iqmp len="+Length);
* for(int i=0; i<iqmp_array.Length; i++){
* System.out.print(Integer.toHexString(iqmp_array[i]&0xff)+":");
* }
* System.out.println("");
*/
}
catch
{
//System.out.println(e);
return(false);
}
return(true);
}
