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→Hardware key generator: DSi key scrambler algorithm
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+The secret constant C has not been publicly disclosed.+
The algorithm for generating the normal-key from keyX and keyY is as follows, in big-endian 128-bit unsigned wraparound arithmetic:
The algorithm for generating the normal-key from keyX and keyY is as follows, in big-endian 128-bit unsigned wraparound arithmetic:
−NormalKey = (((KeyX ROL 2) XOR KeyY) + C) ROL 87. "ROL 87" is equivalent to "ROR 41", the latter is closer to the DSi algorithm which used 42.
+{| class="wikitable" border="1"
−! Mode
−! Formula
+! Secret Constant C
+|-
+| 3DS
+| NormalKey = (((KeyX ROL 2) XOR KeyY) + C) ROR 41
+| Not publicly disclosed.
+|-
+| DSi
+| NormalKey = ((KeyX XOR KeyY) + C) ROL 42
+|
+|}
Unless noted otherwise, all keyslots on retail units use the hardware key generator.
Unless noted otherwise, all keyslots on retail units use the hardware key generator.