// Multiply ECDSA point.
private int executeKIRKCmd13(ByteBuffer @out, int outSize, ByteBuffer @in, int inSize)
{
// Return an error if the crypto engine hasn't been initialized.
if (!CryptoEngine.CryptoEngineStatus)
{
return(PSP_KIRK_NOT_INIT);
}
if ((inSize != 0x3C) || (outSize != 0x28))
{
// Accept inSize==0x3C and outSize==0x3C as this is sent by sceMemab_9BF0C95D from a real PSP
if (outSize != inSize)
{
return(PSP_KIRK_INVALID_SIZE);
}
}
// Start the ECDSA context.
ECDSA ecdsa = new ECDSA();
ECDSAMultiplyCtx ctx = new ECDSAMultiplyCtx(@in, @out);
ecdsa.setCurve();
// Multiply the public key.
ecdsa.multiplyPublicKey(ctx.public_key.toByteArray(), ctx.multiplier);
ctx.write();
return(0);
}
// Generate ECDSA key pair.
private int executeKIRKCmd12(ByteBuffer @out, int size)
{
// Return an error if the crypto engine hasn't been initialized.
if (!CryptoEngine.CryptoEngineStatus)
{
return(PSP_KIRK_NOT_INIT);
}
if (size != 0x3C)
{
return(PSP_KIRK_INVALID_SIZE);
}
// Start the ECDSA context.
ECDSA ecdsa = new ECDSA();
ECDSAKeygenCtx ctx = new ECDSAKeygenCtx(@out);
ecdsa.setCurve();
// Generate the private/public key pair and write it back.
ctx.private_key = ecdsa.PrivateKey;
ctx.public_key = new ECDSAPoint(ecdsa.PublicKey);
ctx.write();
return(0);
}
// Verify ECDSA signature.
private int executeKIRKCmd17(ByteBuffer @in, int size)
{
// Return an error if the crypto engine hasn't been initialized.
if (!CryptoEngine.CryptoEngineStatus)
{
return(PSP_KIRK_NOT_INIT);
}
if (size != 0x64)
{
return(PSP_KIRK_INVALID_SIZE);
}
// TODO
ECDSA ecdsa = new ECDSA();
ECDSAVerifyCtx ctx = new ECDSAVerifyCtx(@in);
ecdsa.setCurve();
return(0);
}
// Sign data with ECDSA key pair.
private int executeKIRKCmd16(ByteBuffer @out, int outSize, ByteBuffer @in, int inSize)
{
// Return an error if the crypto engine hasn't been initialized.
if (!CryptoEngine.CryptoEngineStatus)
{
return(PSP_KIRK_NOT_INIT);
}
if ((inSize != 0x34) || (outSize != 0x28))
{
return(PSP_KIRK_INVALID_SIZE);
}
// TODO
ECDSA ecdsa = new ECDSA();
ECDSASignCtx ctx = new ECDSASignCtx(@in);
ECDSASig sig = new ECDSASig();
ecdsa.setCurve();
return(0);
}
