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ATAES132A param2 checksum for Lock command
When trying to lock the Configuration memory, the chip reports a CRC error. I'm calculating the CRC for the Lock command over address 0xF040 to 0xF1DF.   If I read out the...
Wed. Aug 30, 2017 - 11:35 AM
More ATAES132A datasheet errors
In section I.17, "EncRead Command Configuration Memory Signature MAC"   The length field in block B1 is 526 or 542, NOT 528 or 544 as stated. The integrity MAC evaluates...
Wed. Apr 26, 2017 - 09:31 AM
ATAES132A VolatileKey
Apart from Encrypt/Decrypt of external data, what use is the VolatileKey register?   Is anybody using it? What would you Auth with it?
Thu. Apr 6, 2017 - 08:40 AM
ATAES132A Session Key
I now have my C code working and can EncRead/EncWrite/Auth etc.. I'm trying to design a sensible session key scheme to use. The VolatileKey register can't be used to access User...
Thu. Mar 30, 2017 - 03:38 PM
ATAES132A Datasheet Error (typo)
Section I.16 in the datasheet incorrectly states the EncRead opcode is 0x05.   That is actually the opcode for EncWrite. The correct value for EncRead is 0x04.   I...
Fri. Mar 24, 2017 - 02:17 PM
Decimal value of ATAES132A counters
According to the datasheet the max value of a counter is 0x1FFFEE, which is 21 bits.   Section H.2 "Reading The Counter" advises using this formula to get the decimal value...
Thu. Mar 23, 2017 - 05:12 PM
AT88CK590 / ATAES132A / ACES
  I'm using Atmel Crypto Eval Studo to read the ATAES132A on an AT88CK590 USB stick.   Key 00 and Key 01 are shown as "Undetermined". All other keys show as "...
Fri. Mar 10, 2017 - 09:31 AM