[bme-develop] MD5?

[Sir M. <obe...@ho...>]

Hi Daniel,

copied the code here, could you tell me if I'm understanding it correctly?

char hash[strlen(chr_hash)+1];
strcpy(hash,chr_hash);

hash is the string encoded? why length + 1?

int digestLen = 0;
uchar digest[32];

digest contains the encoded string?

Common::check_crypt_error(cryptContext,cryptCreateContext(&cryptContext, 
CRYPT_UNUSED, CRYPT_ALGO_MD5),"ERROR while creating MD5 context");

make a MD5 encoding cryptlib context?

Common::check_crypt_error(cryptContext,cryptEncrypt(cryptContext,hash,strlen(hash)),"ERROR 
Setting MD5 Hash");

one part of the concatenated string?

Common::check_crypt_error(cryptContext,cryptEncrypt(cryptContext,pass,strlen(pass)),"ERROR 
Setting MD5 Password");

second part?

Common::check_crypt_error(cryptContext,cryptEncrypt(cryptContext,hash,0),"ERROR 
hashing");

encrypt it? where's pass?

Common::check_crypt_error(cryptContext,cryptGetAttributeString(cryptContext, 
CRYPT_CTXINFO_HASHVALUE, digest, &digestLen),"ERROR getting hash");

get the encrypted string and move it into digest?

Common::check_crypt_error(cryptContext,cryptDestroyContext(cryptContext), 
"ERROR while destroying");

destroy context: clean up?

hex(digest,hex_str);
return hex_str;

convert digest into hexidecimal?

Now for email I have to encode the following(also see 
http://www.hypothetic.org/docs/msn/notification/messages.php):

"creds - is the MD5 hexadecimal digest of the concatenated strings MSPAuth + 
sl + password. MD5 is discussed on the pings/challenges page."

so could the code look like this:

Common::check_crypt_error(cryptContext,cryptCreateContext(&cryptContext, 
CRYPT_UNUSED, CRYPT_ALGO_MD5),"ERROR while creating MD5 context");

	Common::check_crypt_error(cryptContext,cryptEncrypt(cryptContext,MSPAuth,strlen(MSPAuth)),"ERROR 
Setting MD5 Hash");

	Common::check_crypt_error(cryptContext,cryptEncrypt(cryptContext,sl,strlen(sl)),"ERROR 
Setting MD5 Password");
	Common::check_crypt_error(cryptContext,cryptEncrypt(cryptContext,password,strlen(password)),"ERROR 
Setting MD5 Password");

	Common::check_crypt_error(cryptContext,cryptEncrypt(cryptContext,hash,0),"ERROR 
hashing");

        uhm???

Common::check_crypt_error(cryptContext,cryptGetAttributeString(cryptContext, 
CRYPT_CTXINFO_HASHVALUE, digest, &digestLen),"ERROR getting hash");

Common::check_crypt_error(cryptContext,cryptDestroyContext(cryptContext), 
"ERROR while destroying");

hex(digest,hex_str);

????

hope you can help, after that I have to search for a javascript complient 
browser that also can be started from Bme....If I'm not mistaken the Dano 
net+ is the browser I'm searching, as Mozilla(FireFox) doesn't work in that 
way yet!

regards,

Tim

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