AlliedModders - [INC] SHA-1 hashing stocks

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[INC] SHA-1 hashing stocks

This file provides 2 stock functions to calculate the SHA-1 hash for a given string or file.

SHA-1, the Secure Hashing Algorithm, is used by the Secure Hashing Standard as defined in FIPS PUB 180-1 published April 17, 1995.

Since it's very unlikely, that 2 messages will result in the same hash, SHA-1 can be used as a fingerprint for a message.

PHP Code:


		
			
/**
 * @brief            Produces a 160-bit message digest for a given data stream
 *
 * @param str        Input string to calculate the hash from.
 * @param output    Output buffer. If bHex is true, output must be at least 40+1 of length, if not it has to be 20+1.
 * @param bHex        If true, return the hash as hexadecimal number, else return a raw binary format.
 * @return          True, if hash was calculated, false otherwise
 */
stock bool:SHA1String(const String:str[], String:output[], bool:bHex=true)

/**
 * @brief            Produces a 160-bit message digest for a given file
 *
 * @param hFile        File handle returned by OpenFile(path, "r"); 
 * @param output    Output buffer. If bHex is true, output must be at least 40+1 of length, if not it has to be 20+1.
 * @param bHex        If true, return the hash as hexadecimal number, else return a raw binary format.
 * @return          True, if hash was calculated, false otherwise
 */
stock bool:SHA1File(Handle:hFile, String:output[], bool:bHex=true)

Changelog:

13.02.2013: Fixed SHA1File compile errors

Re: [INC] SHA-1 hashing stocks

:crab: This doesn't compile anymore :crab:

Code:

    new input[1];

    while(!IsEndOfFile(hFile))

    {

        ReadFileCell(hFile, input[1])

        SHA1Input(Context, input, 1);

    }

ReadFileCell has changed- I tried to fix it briefly but I couldn't verify the computed hash..

Re: [INC] SHA-1 hashing stocks

Quote:

Originally Posted by pheadxdll (Post 1882423)

:crab: This doesn't compile anymore :crab:

Code:

    new input[1];

    while(!IsEndOfFile(hFile))

    {

        ReadFileCell(hFile, input[1])

        SHA1Input(Context, input, 1);

    }

ReadFileCell has changed- I tried to fix it briefly but I couldn't verify the computed hash..

It has changed?! Are you sure? Compiles fine here.

Re: [INC] SHA-1 hashing stocks

Edit: Sorry, I should have been more specific: I'm trying to call SHA1File..

SourcePawn Compiler 1.5.0-dev
C:\Users\ws\Documents\Sourcemod\sourcemod-1.5.0-hg3456-windows\addons\sourcemod\scripting\include\sh a1.inc(75) : error 032: array index out of bounds (variable "input")

Code:

new input[1];

ReadFileCell(hFile, input[1]) // ???

stock ReadFileCell(Handle:hndl, &data, size) 3 parameters vs. 2

Missing semicolon too, :3

What sourcemod compiler are you using? How did this compile?

I've tried a number of fixes but the hash is wrong :(

Re: [INC] SHA-1 hashing stocks

Quote:

Originally Posted by pheadxdll (Post 1882423)

:crab: This doesn't compile anymore :crab:

Code:

    new input[1];

    while(!IsEndOfFile(hFile))

    {

        ReadFileCell(hFile, input[1])

        SHA1Input(Context, input, 1);

    }

ReadFileCell has changed- I tried to fix it briefly but I couldn't verify the computed hash..

Why are you trying to access the second element ([1]) of a single element array? Or did you mean

PHP Code:


		
			
ReadFileCell(hFile, input[0]);

Re: [INC] SHA-1 hashing stocks

Quote:

Originally Posted by pheadxdll (Post 1883032)

Code:

new input[1];

ReadFileCell(hFile, input[1]) // ???

Oh, didn't try to hash a file ;)
That line should probably read

PHP Code:


		
			
ReadFileCell(hFile, input[0], 1);

Re: [INC] SHA-1 hashing stocks

The hash won't validate against php's sha1_file() method with that code.

Re: [INC] SHA-1 hashing stocks

Quote:

Originally Posted by pheadxdll (Post 1883251)

The hash won't validate against php's sha1_file() method with that code.

You're right. That's fixed now and produces (slowly) a valid sha1 hash for files opened with OpenFile(path, "rb")

Re: [INC] SHA-1 hashing stocks

Thanks, works fast enough for my gamedata files. :)