lf hitag hts: use correct byteorder for authentication

[n0emis]

tested with a hitagS transponder.

one could also reverse rnd when initializing the state, but this way it is in the same order as previously

[github-actions]

You are welcome to add an entry to the CHANGELOG.md as well

[iceman1001]

Nice,
now @douniwan5788 just need to verify it and we can merge

[douniwan5788]

It is indeed in the same order as previously, except for rnd. Please reverse the init value of rnd instead to maintain the exact same ks as before.

proxmark3/armsrc/hitagS.c

Line 73 in db1ce08

static uint8_t rnd[] = {0x74, 0x12, 0x44, 0x85}; // random number

Wait, it seems I forgot to swap the key as well...

[douniwan5788]

@n0emis Indeed, you're correct. I overswapped the byte order. In addition to swapping the rnd byte order. What do you think about modifying all calls to ht2_hitag2_init to match this pattern instead?
state = ht2_hitag2_init(REV64(tag.data.s.key_le), REV32(tag.data.s.uid_le), REV32(*(uint32_t *)rx));

[n0emis]

@douniwan5788 done.

works with a normal hitagS tag and in simulation mode (though a further patch is needed for that: #2591)

[douniwan5788]

LGTM