unforum

[ryandrew]

Not only has it been mentioned, it is on the same page, 8 posts up! Jeez, it isn't even a case of searching.

[addybobble]

Hi. I'm looking in to doing some basic linear and differential cryptanalysis on this, starting with linear (as in papers by by Borst, Preneel & Vandewalle, Kaliski etc.). It's pretty heavy, but to me I don't think brute forcing the keys (unless we're very lucky) will be good enough. Apologies in advance if any of you have already talked about this.

As an aside, the distributed.net (eg. where the cows live) site mentions about the messages from the RSA challenges being in the form "The unknown message is: ..... (yada yada)". Now, if we are, say, not assuming an initial vector, and the blocks are not chained, and make a simple assumption about the initial characters of the result being a block or two of 'The unknown message is:...', do you think this might serve as a clue to deriving the key (e.g. we know the result, we now the encrypted result and we know the method to encrypt the result. Not only that but due to the lack of chaining each block is independent, which has already been discussed in some detail, and should also reduce the computation substantially)?

Hope this gives someone an idea. Anyway, back to my S boxes...

[Ashin]

I would suggest against going too far in that direction. Linear and Differential cryptanalysis are good tools, and help find certain weaknesses in algorithms (like the weak key set in the IDEA algorithm), but in general they are not practical tools for breaking code. They rely heavily upon a large number (sometimes upwards of 2^44 texts) of known plaintext/ciphertext pairs in order to break down a person's key and therefore make their ciphering insecure. We're kind of stuck on this problem because we can't do that, we have one ciphertext, and that's it.

As for the IV, what you're asking is whether it's running in ECB or CBC mode. rccrypt actually encrypts the IV as the first block whether or not it runs in CBC mode. The overhead for CBC operation is marginal since you're just XORing every plaintext block as you encrypt it. So we're not really saving time, or gaining any new insight by knowing it was either CBC or ECB. Although, technically we have to test both since we don't know which one the card was encrypted with.

What you say about the blocks is true though. rccrypt has a rather unique method of generating the IV since it only allows the IV to be comprised of printable ASCII characters (if I remember correctly). Meaning, theoretically we can reduce our testing time by only decrpyting the first block and seeing if it contains all readable characters. Chances are this will produce a large number of keys that need to be checked again and retested with the rest of the message, but it does reduce the time to check things quite a bit.

[addybobble]

Thanks Ashin. Yes I concur, one does indeed need a lot of plaintexts for these, and the number of blocks we have is too small, so this type of analysis simply won't do. It was good looking back at these comp sci articles, mind (i didn't do the crypto module at university)

For those of you that are wondering what process of cryptananlysis is, when the data is encrypted the binary bits get jumbled up in an ordered fashion. Cracking the encryption involves looking at where these bits get bunched up, exploiting weaknesses in the way they were jumbled up. Unfortunately for this to work you need to make a statistical analysis of many samples to get the clues required to crack the code. We don't have that luxury here, so we need to go back to basics and maybe look at that clue. Linear analysis makes linear approximations about where stuff gets jumbled up, differential analysis involves looking at the differences. That's about as simple as I think I can explain it. I hope some less techy types reading this will find this useful.

I think I'll have ago with that other train of thought eg. assuming what a block of the answer is to derive the key. If the answer really starts with the same first few characters of the RSA challenges ("The unknown message is..."), it looks like it could turn in to a slighty different problem (eg logical algebra).

[epredator]

Its all too close to not be right?

[hally]

Found this:

l | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
---------------------------------------------------
a | 92 47 E0 A5 58 E7 BA F3 10 C2 D8 87 32 1B F4 1D
b | 91 44 E3 A6 5B E4 B9 F0 13 C1 DB 84 31 18 F7 1E
c | 90 45 E2 A7 5A E5 B8 F1 12 C0 DA 85 30 19 F6 1F
d | 97 42 E5 A0 5D E2 BF F6 15 C7 DD 82 37 1E F1 18
e | 96 43 E4 A1 5C E3 BE F7 14 C6 DC 83 36 1F F0 19
f | 95 40 E7 A2 5F E0 BD F4 17 C5 DF 80 35 1C F3 1A
g | 94 41 E6 A3 5E E1 BC F5 16 C4 DE 81 34 1D F2 1B
h | 9B 4E E9 AC 51 EE B3 FA 19 CB D1 8E 3B 12 FD 14
i | 9A 4F E8 AD 50 EF B2 FB 18 CA D0 8F 3A 13 FC 15
j | 99 4C EB AE 53 EC B1 F8 1B C9 D3 8C 39 10 FF 16
k | 98 4D EA AF 52 ED B0 F9 1A C8 D2 8D 38 11 FE 17
l | 9F 4A ED A8 55 EA B7 FE 1D CF D5 8A 3F 16 F9 10
m | 9E 4B EC A9 54 EB B6 FF 1C CE D4 8B 3E 17 F8 11
n | 9D 48 EF AA 57 E8 B5 FC 1F CD D7 88 3D 14 FB 12
o | 9C 49 EE AB 56 E9 B4 FD 1E CC D6 89 3C 15 FA 13
p | 83 56 F1 B4 49 F6 AB E2 01 D3 C9 96 23 0A E5 0C
q | 82 57 F0 B5 48 F7 AA E3 00 D2 C8 97 22 0B E4 0D
r | 81 54 F3 B6 4B F4 A9 E0 03 D1 CB 94 21 08 E7 0E
s | 80 55 F2 B7 4A F5 A8 E1 02 D0 CA 95 20 09 E6 0F
t | 87 52 F5 B0 4D F2 AF E6 05 D7 CD 92 27 0E E1 08
u | 86 53 F4 B1 4C F3 AE E7 04 D6 CC 93 26 0F E0 09
v | 85 50 F7 B2 4F F0 AD E4 07 D5 CF 90 25 0C E3 0A
w | 84 51 F6 B3 4E F1 AC E5 06 D4 CE 91 24 0D E2 0B
x | 8B 5E F9 BC 41 FE A3 EA 09 DB C1 9E 2B 02 ED 04
y | 8A 5F F8 BD 40 FF A2 EB 08 DA C0 9F 2A 03 EC 05
z | 89 5C FB BE 43 FC A1 E8 0B D9 C3 9C 29 00 EF 06
A | B2 67 C0 85 78 C7 9A D3 30 E2 F8 A7 12 3B D4 3D
B | B1 64 C3 86 7B C4 99 D0 33 E1 FB A4 11 38 D7 3E
C | B0 65 C2 87 7A C5 98 D1 32 E0 FA A5 10 39 D6 3F
D | B7 62 C5 80 7D C2 9F D6 35 E7 FD A2 17 3E D1 38
E | B6 63 C4 81 7C C3 9E D7 34 E6 FC A3 16 3F D0 39
F | B5 60 C7 82 7F C0 9D D4 37 E5 FF A0 15 3C D3 3A
G | B4 61 C6 83 7E C1 9C D5 36 E4 FE A1 14 3D D2 3B
H | BB 6E C9 8C 71 CE 93 DA 39 EB F1 AE 1B 32 DD 34
I | BA 6F C8 8D 70 CF 92 DB 38 EA F0 AF 1A 33 DC 35
J | B9 6C CB 8E 73 CC 91 D8 3B E9 F3 AC 19 30 DF 36
K | B8 6D CA 8F 72 CD 90 D9 3A E8 F2 AD 18 31 DE 37
L | BF 6A CD 88 75 CA 97 DE 3D EF F5 AA 1F 36 D9 30
M | BE 6B CC 89 74 CB 96 DF 3C EE F4 AB 1E 37 D8 31
N | BD 68 CF 8A 77 C8 95 DC 3F ED F7 A8 1D 34 DB 32
O | BC 69 CE 8B 76 C9 94 DD 3E EC F6 A9 1C 35 DA 33
P | A3 76 D1 94 69 D6 8B C2 21 F3 E9 B6 03 2A C5 2C
Q | A2 77 D0 95 68 D7 8A C3 20 F2 E8 B7 02 2B C4 2D
R | A1 74 D3 96 6B D4 89 C0 23 F1 EB B4 01 28 C7 2E
S | A0 75 D2 97 6A D5 88 C1 22 F0 EA B5 00 29 C6 2F
T | A7 72 D5 90 6D D2 8F C6 25 F7 ED B2 07 2E C1 28
U | A6 73 D4 91 6C D3 8E C7 24 F6 EC B3 06 2F C0 29
V | A5 70 D7 92 6F D0 8D C4 27 F5 EF B0 05 2C C3 2A
W | A4 71 D6 93 6E D1 8C C5 26 F4 EE B1 04 2D C2 2B
X | AB 7E D9 9C 61 DE 83 CA 29 FB E1 BE 0B 22 CD 24
Y | AA 7F D8 9D 60 DF 82 CB 28 FA E0 BF 0A 23 CC 25
Z | A9 7C DB 9E 63 DC 81 C8 2B F9 E3 BC 09 20 CF 26
0 | C3 16 B1 F4 09 B6 EB A2 41 93 89 D6 63 4A A5 4C
1 | C2 17 B0 F5 08 B7 EA A3 40 92 88 D7 62 4B A4 4D
2 | C1 14 B3 F6 0B B4 E9 A0 43 91 8B D4 61 48 A7 4E
3 | C0 15 B2 F7 0A B5 E8 A1 42 90 8A D5 60 49 A6 4F
4 | C7 12 B5 F0 0D B2 EF A6 45 97 8D D2 67 4E A1 48
5 | C6 13 B4 F1 0C B3 EE A7 44 96 8C D3 66 4F A0 49
6 | C5 10 B7 F2 0F B0 ED A4 47 95 8F D0 65 4C A3 4A
7 | C4 11 B6 F3 0E B1 EC A5 46 94 8E D1 64 4D A2 4B
8 | CB 1E B9 FC 01 BE E3 AA 49 9B 81 DE 6B 42 AD 44
9 | CA 1F B8 FD 00 BF E2 AB 48 9A 80 DF 6A 43 AC 45
| D3 06 A1 E4 19 A6 FB B2 51 83 99 C6 73 5A B5 5C
~ | 8D 58 FF BA 47 F8 A5 EC 0F DD C7 98 2D 04 EB 02
` | 93 46 E1 A4 59 E6 BB F2 11 C3 D9 86 33 1A F5 1C
! | D2 07 A0 E5 18 A7 FA B3 50 82 98 C7 72 5B B4 5D
@ | B3 66 C1 84 79 C6 9B D2 31 E3 F9 A6 13 3A D5 3C
# | D0 05 A2 E7 1A A5 F8 B1 52 80 9A C5 70 59 B6 5F
$ | D7 02 A5 E0 1D A2 FF B6 55 87 9D C2 77 5E B1 58
% | D6 03 A4 E1 1C A3 FE B7 54 86 9C C3 76 5F B0 59
^ | AD 78 DF 9A 67 D8 85 CC 2F FD E7 B8 0D 24 CB 22
& | D5 00 A7 E2 1F A0 FD B4 57 85 9F C0 75 5C B3 5A
* | D9 0C AB EE 13 AC F1 B8 5B 89 93 CC 79 50 BF 56
( | DB 0E A9 EC 11 AE F3 BA 59 8B 91 CE 7B 52 BD 54
) | DA 0F A8 ED 10 AF F2 BB 58 8A 90 CF 7A 53 BC 55
_ | AC 79 DE 9B 66 D9 84 CD 2E FC E6 B9 0C 25 CA 23
- | DE 0B AC E9 14 AB F6 BF 5C 8E 94 CB 7E 57 B8 51
+ | D8 0D AA EF 12 AD F0 B9 5A 88 92 CD 78 51 BE 57
= | CE 1B BC F9 04 BB E6 AF 4C 9E 84 DB 6E 47 A8 41
{ | 88 5D FA BF 42 FD A0 E9 0A D8 C2 9D 28 01 EE 07
[ | A8 7D DA 9F 62 DD 80 C9 2A F8 E2 BD 08 21 CE 27
} | 8E 5B FC B9 44 FB A6 EF 0C DE C4 9B 2E 07 E8 01
] | AE 7B DC 99 64 DB 86 CF 2C FE E4 BB 0E 27 C8 21
| | 8F 5A FD B8 45 FA A7 EE 0D DF C5 9A 2F 06 E9 00
\ | AF 7A DD 98 65 DA 87 CE 2D FF E5 BA 0F 26 C9 20
: | C9 1C BB FE 03 BC E1 A8 4B 99 83 DC 69 40 AF 46
; | C8 1D BA FF 02 BD E0 A9 4A 98 82 DD 68 41 AE 47
" | D1 04 A3 E6 1B A4 F9 B0 53 81 9B C4 71 58 B7 5E
' | D4 01 A6 E3 1E A1 FC B5 56 84 9E C1 74 5D B2 5B
< | CF 1A BD F8 05 BA E7 AE 4D 9F 85 DA 6F 46 A9 40
, | DF 0A AD E8 15 AA F7 BE 5D 8F 95 CA 7F 56 B9 50
>| CD 18 BF FA 07 B8 E5 AC 4F 9D 87 D8 6D 44 AB 42
. | DD 08 AF EA 17 A8 F5 BC 5F 8D 97 C8 7D 54 BB 52
? | CC 19 BE FB 06 B9 E4 AD 4E 9C 86 D9 6C 45 AA 43
/ | DC 09 AE EB 16 A9 F4 BD 5E 8C 96 C9 7C 55 BA 53
¡ | 52 87 20 65 98 27 7A 33 D0 02 18 47 F2 DB 34 DD
¢ | 51 84 23 66 9B 24 79 30 D3 01 1B 44 F1 D8 37 DE
£ | 50 85 22 67 9A 25 78 31 D2 00 1A 45 F0 D9 36 DF
¤ | 57 82 25 60 9D 22 7F 36 D5 07 1D 42 F7 DE 31 D8
¥ | 56 83 24 61 9C 23 7E 37 D4 06 1C 43 F6 DF 30 D9
¦ | 55 80 27 62 9F 20 7D 34 D7 05 1F 40 F5 DC 33 DA
§ | 54 81 26 63 9E 21 7C 35 D6 04 1E 41 F4 DD 32 DB
¨ | 5B 8E 29 6C 91 2E 73 3A D9 0B 11 4E FB D2 3D D4
© | 5A 8F 28 6D 90 2F 72 3B D8 0A 10 4F FA D3 3C D5
ª | 59 8C 2B 6E 93 2C 71 38 DB 09 13 4C F9 D0 3F D6
« | 58 8D 2A 6F 92 2D 70 39 DA 08 12 4D F8 D1 3E D7
| 5F 8A 2D 68 95 2A 77 3E DD 0F 15 4A FF D6 39 D0
® | 5D 88 2F 6A 97 28 75 3C DF 0D 17 48 FD D4 3B D2
¯ | 5C 89 2E 6B 96 29 74 3D DE 0C 16 49 FC D5 3A D3
° | 43 96 31 74 89 36 6B 22 C1 13 09 56 E3 CA 25 CC
± | 42 97 30 75 88 37 6A 23 C0 12 08 57 E2 CB 24 CD
² | 41 94 33 76 8B 34 69 20 C3 11 0B 54 E1 C8 27 CE
³ | 40 95 32 77 8A 35 68 21 C2 10 0A 55 E0 C9 26 CF
´ | 47 92 35 70 8D 32 6F 26 C5 17 0D 52 E7 CE 21 C8
µ | 46 93 34 71 8C 33 6E 27 C4 16 0C 53 E6 CF 20 C9
| 45 90 37 72 8F 30 6D 24 C7 15 0F 50 E5 CC 23 CA
· | 44 91 36 73 8E 31 6C 25 C6 14 0E 51 E4 CD 22 CB
¸ | 4B 9E 39 7C 81 3E 63 2A C9 1B 01 5E EB C2 2D C4
¹ | 4A 9F 38 7D 80 3F 62 2B C8 1A 00 5F EA C3 2C C5
º | 49 9C 3B 7E 83 3C 61 28 CB 19 03 5C E9 C0 2F C6
» | 48 9D 3A 7F 82 3D 60 29 CA 18 02 5D E8 C1 2E C7
¼ | 4F 9A 3D 78 85 3A 67 2E CD 1F 05 5A EF C6 29 C0
½ | 4E 9B 3C 79 84 3B 66 2F CC 1E 04 5B EE C7 28 C1
¾ | 4D 98 3F 7A 87 38 65 2C CF 1D 07 58 ED C4 2B C2
¿ | 4C 99 3E 7B 86 39 64 2D CE 1C 06 59 EC C5 2A C3
À | 33 E6 41 04 F9 46 1B 52 B1 63 79 26 93 BA 55 BC
Á | 32 E7 40 05 F8 47 1A 53 B0 62 78 27 92 BB 54 BD
 | 31 E4 43 06 FB 44 19 50 B3 61 7B 24 91 B8 57 BE
à | 30 E5 42 07 FA 45 18 51 B2 60 7A 25 90 B9 56 BF
Ä | 37 E2 45 00 FD 42 1F 56 B5 67 7D 22 97 BE 51 B8
Å | 36 E3 44 01 FC 43 1E 57 B4 66 7C 23 96 BF 50 B9
Æ | 35 E0 47 02 FF 40 1D 54 B7 65 7F 20 95 BC 53 BA
Ç | 34 E1 46 03 FE 41 1C 55 B6 64 7E 21 94 BD 52 BB
È | 3B EE 49 0C F1 4E 13 5A B9 6B 71 2E 9B B2 5D B4
É | 3A EF 48 0D F0 4F 12 5B B8 6A 70 2F 9A B3 5C B5
Ê | 39 EC 4B 0E F3 4C 11 58 BB 69 73 2C 99 B0 5F B6
Ë | 38 ED 4A 0F F2 4D 10 59 BA 68 72 2D 98 B1 5E B7
Ì | 3F EA 4D 08 F5 4A 17 5E BD 6F 75 2A 9F B6 59 B0
Í | 3E EB 4C 09 F4 4B 16 5F BC 6E 74 2B 9E B7 58 B1
Î | 3D E8 4F 0A F7 48 15 5C BF 6D 77 28 9D B4 5B B2
Ï | 3C E9 4E 0B F6 49 14 5D BE 6C 76 29 9C B5 5A B3
Ð | 23 F6 51 14 E9 56 0B 42 A1 73 69 36 83 AA 45 AC
Ñ | 22 F7 50 15 E8 57 0A 43 A0 72 68 37 82 AB 44 AD
Ò | 21 F4 53 16 EB 54 09 40 A3 71 6B 34 81 A8 47 AE
Ó | 20 F5 52 17 EA 55 08 41 A2 70 6A 35 80 A9 46 AF
Ô | 27 F2 55 10 ED 52 0F 46 A5 77 6D 32 87 AE 41 A8
Õ | 26 F3 54 11 EC 53 0E 47 A4 76 6C 33 86 AF 40 A9
Ö | 25 F0 57 12 EF 50 0D 44 A7 75 6F 30 85 AC 43 AA
× | 24 F1 56 13 EE 51 0C 45 A6 74 6E 31 84 AD 42 AB
Ø | 2B FE 59 1C E1 5E 03 4A A9 7B 61 3E 8B A2 4D A4
Ù | 2A FF 58 1D E0 5F 02 4B A8 7A 60 3F 8A A3 4C A5
Ú | 29 FC 5B 1E E3 5C 01 48 AB 79 63 3C 89 A0 4F A6
Û | 28 FD 5A 1F E2 5D 00 49 AA 78 62 3D 88 A1 4E A7
Ü | 2F FA 5D 18 E5 5A 07 4E AD 7F 65 3A 8F A6 49 A0
Ý | 2E FB 5C 19 E4 5B 06 4F AC 7E 64 3B 8E A7 48 A1
Þ | 2D F8 5F 1A E7 58 05 4C AF 7D 67 38 8D A4 4B A2
ß | 2C F9 5E 1B E6 59 04 4D AE 7C 66 39 8C A5 4A A3
à | 13 C6 61 24 D9 66 3B 72 91 43 59 06 B3 9A 75 9C
á | 12 C7 60 25 D8 67 3A 73 90 42 58 07 B2 9B 74 9D
â | 11 C4 63 26 DB 64 39 70 93 41 5B 04 B1 98 77 9E
ã | 10 C5 62 27 DA 65 38 71 92 40 5A 05 B0 99 76 9F
ä | 17 C2 65 20 DD 62 3F 76 95 47 5D 02 B7 9E 71 98
å | 16 C3 64 21 DC 63 3E 77 94 46 5C 03 B6 9F 70 99
æ | 15 C0 67 22 DF 60 3D 74 97 45 5F 00 B5 9C 73 9A
ç | 14 C1 66 23 DE 61 3C 75 96 44 5E 01 B4 9D 72 9B
è | 1B CE 69 2C D1 6E 33 7A 99 4B 51 0E BB 92 7D 94
é | 1A CF 68 2D D0 6F 32 7B 98 4A 50 0F BA 93 7C 95
ê | 19 CC 6B 2E D3 6C 31 78 9B 49 53 0C B9 90 7F 96
ë | 18 CD 6A 2F D2 6D 30 79 9A 48 52 0D B8 91 7E 97
ì | 1F CA 6D 28 D5 6A 37 7E 9D 4F 55 0A BF 96 79 90
í | 1E CB 6C 29 D4 6B 36 7F 9C 4E 54 0B BE 97 78 91
î | 1D C8 6F 2A D7 68 35 7C 9F 4D 57 08 BD 94 7B 92
ï | 1C C9 6E 2B D6 69 34 7D 9E 4C 56 09 BC 95 7A 93
ð | 03 D6 71 34 C9 76 2B 62 81 53 49 16 A3 8A 65 8C
ñ | 02 D7 70 35 C8 77 2A 63 80 52 48 17 A2 8B 64 8D
ò | 01 D4 73 36 CB 74 29 60 83 51 4B 14 A1 88 67 8E
ó | 00 D5 72 37 CA 75 28 61 82 50 4A 15 A0 89 66 8F
ô | 07 D2 75 30 CD 72 2F 66 85 57 4D 12 A7 8E 61 88
õ | 06 D3 74 31 CC 73 2E 67 84 56 4C 13 A6 8F 60 89
ö | 05 D0 77 32 CF 70 2D 64 87 55 4F 10 A5 8C 63 8A
÷ | 04 D1 76 33 CE 71 2C 65 86 54 4E 11 A4 8D 62 8B
ø | 0B DE 79 3C C1 7E 23 6A 89 5B 41 1E AB 82 6D 84
ù | 0A DF 78 3D C0 7F 22 6B 88 5A 40 1F AA 83 6C 85
ú | 09 DC 7B 3E C3 7C 21 68 8B 59 43 1C A9 80 6F 86
û | 08 DD 7A 3F C2 7D 20 69 8A 58 42 1D A8 81 6E 87
ü | 0F DA 7D 38 C5 7A 27 6E 8D 5F 45 1A AF 86 69 80
ý | 0E DB 7C 39 C4 7B 26 6F 8C 5E 44 1B AE 87 68 81
þ | 0D D8 7F 3A C7 78 25 6C 8F 5D 47 18 AD 84 6B 82
ÿ | 0C D9 7E 3B C6 79 24 6D 8E 5C 46 19 AC 85 6A 83

May have already come up but seems useful

Hally

[bertyb]

Hi Hally,

Where did you find that? - I havent seen it before, but I have been dedicating most of my time to Shuffled recently?

Looks like good work.

[hally]

http://www.nettwerked.net/trillian.txt[url][/url]

[locqust]

Hey Hally that looks interesting, as soon as I find my card Im gonna give it a quick comparison to see if we get anything from that.

Nice work!

[hally]

Yeah, I've been trying to work something out but all the symbols are repeated at least once throughout the key. I really have no clue how to interpret it.

Anyone know what the the answer we're looking for is? Is it one sentence or a word, or do we have to decipher the whole text? Thought it may just have been the line with the silver dot that we have to work out so have started there.

Hally

[stevewh]

I can't seem to match up any of the lines with any of the ones that hally posted.

However, there is one thing I have noticed.
The lines on the card consist of 12 groups of 2 figures (except for the last one).
Hally's lines consist of 16 groups of 2 figures.
If you convert the lines on the card so that they have 16 groups of 2 figures, then there are exactly 11 lines.

Is this a coincidence?

[hally]

Right, I've decided that the message may have something to do with the creation of the Panama Canal:

http://www.books-about-california.com/Pages/The_City_of_Domes/Illustration_Pages/Labor_of_Hercules.html[url]

Thrown a bit of a spanner in the works but I think you'll agree it's a valid suggestion.

Hally[/url]

[bertyb]

Hi,

I have heard people talk of this route before.

Does sound feasible, the only 1 thing I notice is that the spelling of Labour is different on the card to the story (Labour vs Labor).

Might be worth another look.

[Uhtoff]

Missing out 'u' is just one way in which the septics mangle the English language Can't imagine it's relevant.

[fretty]

Isn't Labor is the american spelling of Labour