To those of you contemplating converting the lockdown SHA1 to language of choice

[warz]

Who told you this?

Not sure if he'd want me to say, but his reply was the following...

It is non-standard.  Standard SHA1 of "The quick brown fox jumps over the lazy dog" is 2f d4 e1 c6 7a 2d 28 fc ed 84 9e e1 bb 76 e7 39 1b 93 eb 12.  Lockdown's is a8 68 fb 6c 0d 95 c4 8d 03 7e 9f 08 ce 6e 42 00 fd 43 5f a4.

[Warrior]

@Reality: Then learn how it works. UL posted SHA1, port it then break it.

[UserLoser]

Who told you this?

Not sure if he'd want me to say, but his reply was the following...

It is non-standard.  Standard SHA1 of "The quick brown fox jumps over the lazy dog" is 2f d4 e1 c6 7a 2d 28 fc ed 84 9e e1 bb 76 e7 39 1b 93 eb 12.  Lockdown's is a8 68 fb 6c 0d 95 c4 8d 03 7e 9f 08 ce 6e 42 00 fd 43 5f a4.

I'm gonna guess iago, and how did he come up with lockdown's version there?

[warz]

No, it wasn't iago. Not sure how he's producing those, but I too am producing results that differ from a standard sha1 implementation, using the method i described above.

[Barabajagal]

@Reality: Then learn how it works. UL posted SHA1, port it then break it.

The links don't work for me...

[iago]

It's not standard SHA1.

[Sorc.Polgara]

It's not standard SHA1.

...

Who to believe >_<;

[warz]

It's not standard SHA1.

...

Who to believe >_<;

It isn't standard. Userloser said he was wrong on bnet yesterday, and that there's a few changes in the SHA1Final routine, apparently.

[Barabajagal]

Still can't nav to UL's links in the second post .

[warz]

Anyways, I updated the program linked in the first post (source included). You can modify the code to pass whatever you like through the appropriate hasher. You can see the example "The quick brown fox jumps over the lazy dog" result.

[Rob]

The only difference I have found with the lockdown implementation of SHA1 is in the SHA1Final procedure.  I have just completed reversing this function.

http://www.onlythechosen.com/sha1_ld.zip

Enjoy.

[Hdx]

Just one question, has anyone confermed that the 64-byte buffer in Final stays constant throughout the eintire process?

~Hdx

[warz]

Just one question, has anyone confermed that the 64-byte buffer in Final stays constant throughout the eintire process?

~Hdx

im pretty sure it is. look at the above code, and see what rob has done.

[Hero]

The only difference I have found with the lockdown implementation of SHA1 is in the SHA1Final procedure.  I have just completed reversing this function.

http://www.onlythechosen.com/sha1_ld.zip

Enjoy.

Thank you sir.