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Noz3001
I'm a spammer
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 Posted: Tue May 29, 2007 11:15 am Post subject: appal |
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I need help again =(.
Im trying to get the MD5 OR Sha1 of a file (Doesn't matter which one). Do you know how I can do this?
Google fails me again!
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Flyte
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| Posted: Tue May 29, 2007 12:01 pm Post subject: |
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Wikipedia has psuedo-code for calculating the hash of a certain input.
Just convert to c and input a file.
http://en.wikipedia.org/wiki/MD5
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appalsap
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| Posted: Tue May 29, 2007 12:11 pm Post subject: |
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yeah but your own implementation will add considerable size to your application. Use the Windows CryptoAPI
edit: here is an example of this.
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Flyte
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| Posted: Tue May 29, 2007 1:18 pm Post subject: |
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| appalsap wrote: | yeah but your own implementation will add considerable size to your application. Use the Windows CryptoAPI
edit: here is an example of this. |
It comes down to if you want customization and speed, or simplicity and reliability.
The API requires another dll to be loaded into your address space anyways.
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appalsap
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| Posted: Tue May 29, 2007 1:37 pm Post subject: |
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| Flyte wrote: | | It comes down to if you want customization and speed, or simplicity and reliability. |
wait what do you mean by "customization", how can you customize a hash? and why do you think one service would be faster than the other?
| Flyte wrote: | | The API requires another dll to be loaded into your address space anyways. |
oh the horror and the humanity of it all
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Noz3001
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| Posted: Tue May 29, 2007 2:55 pm Post subject: |
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Ok, thanks. 
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Flyte
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| Posted: Tue May 29, 2007 2:58 pm Post subject: |
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| appalsap wrote: | | Flyte wrote: | | It comes down to if you want customization and speed, or simplicity and reliability. |
wait what do you mean by "customization", how can you customize a hash? and why do you think one service would be faster than the other? |
1) If you wanted to you could make your own custom hash.
2) It can be faster because of code optimization.
3)
| appalsap wrote: | | 1. It is windows-specific, which would break an otherwise portable program. |
| appalsap wrote: | | Flyte wrote: | | The API requires another dll to be loaded into your address space anyways. |
oh the horror and the humanity of it all |
One of the reasons why VB is so horrible. 
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appalsap
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| Posted: Tue May 29, 2007 3:13 pm Post subject: |
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| Flyte wrote: | | 1) If you wanted to you could make your own custom hash. |
Yeah everyone goes through that stage, but eventually you will realize that you won't be able to write a better hashing algorithm than the ones tested by years of scrutiny, scientific and peer review.
| Flyte wrote: | | 2) It can be faster because of code optimization. |
Because the average person can code better than the people at Microsoft.
| Flyte wrote: | | 3) It is windows-specific, which would break an otherwise portable program. |
Very good point, I agree, and it was terrible for me to assume that he was going to make a Windows program but 99% of the time that is the case.
| Flyte wrote: | | One of the reasons why VB is so horrible. |
You mean the runtime DLL? That's not standard. what cryptoAPI uses, advapi32.dll will probably be loaded in your application anyway, it has a lot of functions that aren't related to cryptography such as the registry API.
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Flyte
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| Posted: Tue May 29, 2007 3:27 pm Post subject: |
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| appalsap wrote: | | Yeah everyone goes through that stage, but eventually you will realize that you won't be able to write a better hashing algorithm than the ones tested by years of scrutiny, scientific and peer review. |
Good point, I agree with you there. Though writing your own is a good way to see how they work.
| appalsap wrote: | | Because the average person can code better than the people at Microsoft. |
You know as well as I that they program for reliability and not speed. If it was speed, Windows would be in ASM.
| appalsap wrote: |
You mean the runtime DLL? That's not standard. what cryptoAPI uses, advapi32.dll will probably be loaded in your application anyway, it has a lot of functions that aren't related to cryptography such as the registry API. |
I was under the assumption that it had its own separate dll. Sorry about that.
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Madman
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| Posted: Tue May 29, 2007 3:37 pm Post subject: |
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lol, /\ /\ /\
analytical post reviewing at it's finest.
_________________
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Noz3001
I'm a spammer
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| Posted: Tue May 29, 2007 4:59 pm Post subject: |
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| Ok, i've got it working now ^^. Stage 1 of my Anti-Cheat program is complete =D
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