Difference between revisions of "LlMD5String"
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{{LSL Function/warning|Security|The MD5 hashing algorithm should not be used because it is too easy to generate collisions (two inputs which result in the same hash). http://www.kb.cert.org/vuls/id/836068}} | {{LSL Function | ||
|inject-1={{LSL Function/warning|Security|The MD5 hashing algorithm should not be used because it is too easy to generate collisions (two inputs which result in the same hash). http://www.kb.cert.org/vuls/id/836068}} | |||
|func_id=258|func_sleep=0.0|func_energy=10.0 | |func_id=258|func_sleep=0.0|func_energy=10.0 | ||
|func=llMD5String|return_type=string|p1_type=string|p1_name=src|p2_type=integer|p2_name=nonce | |func=llMD5String|return_type=string|p1_type=string|p1_name=src|p2_type=integer|p2_name=nonce | ||
|func_footnote | |func_footnote | ||
|func_desc | |func_desc | ||
|return_text=of 32 hex characters that is the {{Wikipedia|MD5|MD5}} checksum of | |return_text=of 32 hex characters that is the {{Wikipedia|MD5|MD5}} checksum of {{LSLP|src}} with a {{Wikipedia|salt (cryptography)|salt}} of <code>":"+{{LSLPT|nonce}}</code>. | ||
|spec= | |spec={{LSLP|nonce}} is casted to string, then appended to {{LSLP|src}} after a colon (<code>{{LSLPT|src}} + ":" + {{LSLPT|nonce}}</code>). This is important to know if you are calculating a hash in another language and wish to compare with one calculated in LSL. It could be written as <code>MD5Hash({{LSLPT|src}} + ":" + {{LSLPT|nonce}})</code> | ||
LSL strings are stored in the UTF-8 format. | LSL strings are stored in the UTF-8 format. | ||
Revision as of 21:34, 11 June 2012
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Security Warning! |
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The MD5 hashing algorithm should not be used because it is too easy to generate collisions (two inputs which result in the same hash). http://www.kb.cert.org/vuls/id/836068 |
Summary
Function: string llMD5String( string src, integer nonce );| 258 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns a string of 32 hex characters that is the 
MD5 checksum of src with a salt of ":"+nonce.
| • string | src | |||
| • integer | nonce |
Specification
nonce is casted to string, then appended to src after a colon (src + ":" + nonce). This is important to know if you are calculating a hash in another language and wish to compare with one calculated in LSL. It could be written as MD5Hash(src + ":" + nonce)
LSL strings are stored in the UTF-8 format.
Caveats
Examples
<lsl> llSay(0, llMD5String("Hello, Avatar!", 0)); // returns 112abd47ceaae1c05a826828650434a6 </lsl>
Linux Example
$ echo -n 'Hello, Avatar!:0' | openssl md5 112abd47ceaae1c05a826828650434a6
See Also
Functions
| • | llSHA1String |