Difference between revisions of "LlMD5String"
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{{ | {{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 {{LSLP|src}} with a {{Wikipedia|salt (cryptography)|salt}} of <code>":"+{{LSLPT|nonce}}</code>. | |||
|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> | |||
The character encoding used by llMD5String is the UTF-8 format. | |||
|caveats | |caveats | ||
|constants | |constants | ||
|examples | |examples= | ||
<source lang="lsl2"> | |||
llSay(0, llMD5String("Hello, Avatar!", 0)); // returns 112abd47ceaae1c05a826828650434a6 | |||
</source> | |||
====Linux Example==== | |||
<source lang="bash"> | |||
$ echo -n 'Hello, Avatar!:0' | openssl md5 | |||
112abd47ceaae1c05a826828650434a6 | |||
</source> | |||
|helpers | |helpers | ||
|also_functions | |also_functions= | ||
{{LSL DefineRow||[[llSHA1String]]}} | |||
{{LSL DefineRow||[[llSHA256String]]}} | |||
|also_tests | |also_tests | ||
|also_events | |also_events | ||
|also_articles | |also_articles | ||
|notes | |notes | ||
|cat1= | |cat1=Hash | ||
|cat2=Encoding | |cat2=Encoding | ||
|cat3 | |cat3=String | ||
|cat4 | |cat4 | ||
}} | }}{{LSLC{{#var:lang}}|Encryption|llMD5String}} | ||
Latest revision as of 10:25, 16 September 2022
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|
Security Warning! |
|
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 );| 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)
The character encoding used by llMD5String is the UTF-8 format.
Examples
llSay(0, llMD5String("Hello, Avatar!", 0)); // returns 112abd47ceaae1c05a826828650434a6
Linux Example
$ echo -n 'Hello, Avatar!:0' | openssl md5
112abd47ceaae1c05a826828650434a6
See Also
Functions
| • | llSHA1String | |||
| • | llSHA256String |
Deep Notes
Signature |
|---|
function string llMD5String( string src, integer nonce ); |