Thank you.
Matej Kurpel wrote:
>
> On 5. 2. 2011 16:31, lu_hernan wrote:
>> Thank you for answering.
>>
>> The file does not include any CR or LF but I have noticed that is saved
>> in
>> UTF-8. Does it has anything to do with the problem?
> Maybe. Some UTF-8 files can contain a Byte Order Mark (or BOM) which
> consists of 3 bytes at the very beginning of the file. Most editors
> don't show them up but you can clearly see them when looking at the file
> in a hex-editor.
>> If I read the file with a program with the code below the result is the
>> same
>> as the command line but, if I take the content of a file and put it in
>> const
>> unsigned char data[] it does not.
>>
>> My program will generate a string that has to be signed (md5 and RSA
>> key).
>> Which method will assure that I have a valid signed string:
>> Write that string to a file and read it back to sign it?
>> Or pass the string as an argument to a function and sign it? ( this is I
>> would like to do but digest is different)
>>
>> TIA
>>
>> Luis Hernandez
>>
>>
>>
>> Dave Thompson-5 wrote:
>>>> From: owner-openssl-us...@openssl.org On Behalf Of lu_hernan
>>>> Sent: Friday, 04 February, 2011 19:14
>>>> openssl dgst -md5 sometextdata.txt
>>>>
>>>> it gives an answer XYZ
>>>>
>>>> but using this code en visual c++:
>>>> const unsigned char data[]="text from file: sometextdata.txt";
>>>> unsigned char md[MD5_DIGEST_LENGTH];
>>>> MD5(data, strlen(data), md);
>>>>
>>>> it gives ABC as result.
>>>>
>>> Make sure the data is exactly byte-for-byte the same.
>>> In particular, does the file have a CR-LF, or maybe just LF,
>>> at the end? My ancient MSVC++6 (circa 1998) has an option
>>> on File / Open: OpenAs=Binary . If that or something similar
>>> is available, it should show exactly what's in the file.
>>> If not do a simple program like:
>>>
>>> #include<stdio.h>
>>> int main(void){
>>> FILE * fp = fopen ("sometextdata.txt", "rb"); /* b matters on Win */
>>> unsigned char buff[99999]; int i, n = fread (buff,1,sizeof buff, fp);
>>> for( i = 0; i< n; i++ ) printf ("%c%02X", " \n"[!(i&0xF)], buff[i]);
>>> printf ("\n"); fclose (fp); return 0; }
>>>
>>>
>>> ______________________________________________________________________
>>> OpenSSL Project http://www.openssl.org
>>> User Support Mailing List openssl-users@openssl.org
>>> Automated List Manager majord...@openssl.org
>>>
>>>
>
> ______________________________________________________________________
> OpenSSL Project http://www.openssl.org
> User Support Mailing List openssl-users@openssl.org
> Automated List Manager majord...@openssl.org
>
>
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