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Re: Detecting corrupt race files

Mon, 17 May 2021 14:20

ricks03

Officer Cadet 1st Year
Creator of TotalHost and Stars! utilities
Created TotalHost and Stars! utilities

Messages: 222
Registered: January 2012
Location: NC

So the formula appears to be If the Race Name is ABCDE / EFGHI

<other data that doesn't include the race name > 0 0 A E B F C G D H E I
where the values of the individual letters are converted to ASCII, with XOR'd even bytes for the first checksum value, and XOR'd odd bytes for the second checksum value.

That makes perfect sense for why ABCDE / ABCDE doesn't change the Checksum value, because you're XOR'ing A^A, C^C, E^E and 0^0, B^B,D^D, which don't change the value.

It's still not perfect, as it only works at the moment for an odd # of characters that is the same in both singular and plural, but it works for any combination of any characters for an odd number of characters. Just have to figure out how to fill in the blanks.

Edit: Literally, fill in the array of ascii values for singular and plural with 0s, so each is 15 characters long.

[Updated on: Mon, 17 May 2021 14:32]

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[Message index]

		Detecting corrupt race files By: ricks03 on Sun, 17 February 2019 23:58
		Re: Detecting corrupt race files By: raptor on Mon, 18 February 2019 14:37
		Re: Detecting corrupt race files By: ricks03 on Mon, 18 February 2019 15:01
		Re: Detecting corrupt race files By: raptor on Mon, 18 February 2019 16:39
		Re: Detecting corrupt race files By: craebild on Tue, 19 February 2019 12:08
		Re: Detecting corrupt race files By: ricks03 on Tue, 19 February 2019 13:17
		Re: Detecting corrupt race files By: raptor on Tue, 19 February 2019 18:32
		Re: Detecting corrupt race files By: ricks03 on Wed, 20 February 2019 00:19
		Re: Detecting corrupt race files By: raptor on Wed, 20 February 2019 09:12
		Re: Detecting corrupt race files By: ricks03 on Wed, 20 February 2019 12:30
		Re: Detecting corrupt race files By: raptor on Wed, 20 February 2019 10:04
		Re: Detecting corrupt race files By: ricks03 on Mon, 16 November 2020 02:51
		Re: Detecting corrupt race files By: ricks03 on Wed, 20 February 2019 12:37
		Re: Detecting corrupt race files By: raptor on Fri, 22 February 2019 10:59
		Re: Detecting corrupt race files By: raptor on Sun, 24 February 2019 17:42
		Re: Detecting corrupt race files By: ricks03 on Sun, 24 February 2019 22:59
		Re: Detecting corrupt race files By: russl5445 on Tue, 14 July 2020 05:38
		Re: Detecting corrupt race files By: raptor on Tue, 14 July 2020 09:14
		Re: Detecting corrupt race files By: russl5445 on Tue, 14 July 2020 11:45
		Re: Detecting corrupt race files By: russl5445 on Tue, 14 July 2020 13:40
		Re: Detecting corrupt race files By: ricks03 on Wed, 18 November 2020 23:58
		Re: Detecting corrupt race files By: ricks03 on Sat, 15 May 2021 02:34
		Re: Detecting corrupt race files By: ricks03 on Sat, 15 May 2021 02:44
		Re: Detecting corrupt race files By: ricks03 on Sat, 15 May 2021 12:10
		Re: Detecting corrupt race files By: ricks03 on Sat, 15 May 2021 12:29
		Re: Detecting corrupt race files By: ricks03 on Sat, 15 May 2021 13:09
		Re: Detecting corrupt race files By: raptor on Sat, 15 May 2021 15:55
		Re: Detecting corrupt race files By: ricks03 on Sat, 15 May 2021 17:01
		Re: Detecting corrupt race files By: raptor on Wed, 27 February 2019 22:18
		Re: Detecting corrupt race files By: m.a@stars on Thu, 28 February 2019 22:33
		Re: Detecting corrupt race files By: ricks03 on Sat, 15 May 2021 14:21
		Re: Detecting corrupt race files By: raptor on Mon, 17 May 2021 11:57
		Re: Detecting corrupt race files By: ricks03 on Mon, 17 May 2021 12:03
		Re: Detecting corrupt race files By: raptor on Mon, 17 May 2021 12:37
		Re: Detecting corrupt race files By: ricks03 on Mon, 17 May 2021 12:50
		Re: Detecting corrupt race files By: raptor on Mon, 17 May 2021 12:57
		Re: Detecting corrupt race files By: ricks03 on Mon, 17 May 2021 13:08
		Re: Detecting corrupt race files By: ricks03 on Mon, 17 May 2021 14:02
		Re: Detecting corrupt race files By: ricks03 on Mon, 17 May 2021 14:20
		Re: Detecting corrupt race files By: ricks03 on Mon, 17 May 2021 15:32
		Re: Detecting corrupt race files By: ricks03 on Mon, 17 May 2021 18:32
		Re: Detecting corrupt race files By: raptor on Tue, 18 May 2021 00:41
		Re: Detecting corrupt race files By: ricks03 on Tue, 18 May 2021 01:22
		Re: Detecting corrupt race files By: raptor on Tue, 18 May 2021 10:07
		Re: Detecting corrupt race files By: raptor on Tue, 18 May 2021 18:00
		Re: Detecting corrupt race files By: ricks03 on Mon, 28 June 2021 15:44

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