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→RSA_MOD: Note about attack to read RSA_EXPFIFO indirectly
== RSA_MOD ==
== RSA_MOD ==
The RSA key modulus for the selected keyslot can be written here. When writing the RSA modulus, the modulus must align with the end of the register area.
The RSA key modulus for the selected keyslot can be written here. When writing the RSA modulus, the modulus must align with the end of the register area.
Writing to RSA_MOD does not change the exponent written with RSA_EXPFIFO. An attack based on the [[wikipedia:Pohlig-Hellman algorithm|Pohlig-Hellman algorithm]] exists to "read" the contents of RSA_EXPFIFO as a result (see [[3DS System Flaws#Hardware|3DS System Flaws]]).
== RSA_TXT ==
== RSA_TXT ==