Savedata Encryption/Decryption

[popsdeco]

Another suspicous code:
if ((ctx.mode == 0x2) || (ctx.mode == 0x4) || (ctx.mode == 0x6)) {
System.arraycopy(resultBuf, 0, scrambleResultBuf, 0x14, 0x10);
ScrambleSD(scrambleResultBuf, 0x10, 0x100, 0x4, 0x05);
ScrambleSD(scrambleResultBuf, 0x10, seed, 0x4, 0x04);
System.arraycopy(scrambleResultBuf, 0, resultBuf, 0, 0x10);
}

I think System.arraycopy(scrambleResultBuf, 0, scrambleResultBuf, 0x14, 0x10); is required, right?