Mazda 3rd generation (2012+) crypto

Mazda: 1.5L, 2.0L, 2.5L SKYACTIV-G P5/PE/PY (Mazda3/CX5/6 SkyActiv Denso Crypted) 
Mazda: 2.2L SKYACTIV-D SH (Mazda3/CX5/6 Denso Crypted 2MB) 
Mazda: 1.5L, 2.2L SKYACTIV-D S5/SH (Mazda2/3/CX5/6 Denso Crypted 3.75MB) 
Mazda: 1.6L Z6 (Denso Crypted)
Reading, writing, checksum correction.