Difference between revisions of "LlSHA1String"
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*{{SVN|1291|rev=98903|trunk=*|anchor=file13|ver=1.21.5.97417|ser=1.24.9.98650}} Initial introduction. | *{{SVN|1291|rev=98903|trunk=*|anchor=file13|ver=1.21.5.97417|ser=1.24.9.98650}} Initial introduction. | ||
*{{SVN|1298|rev=99021|branch=OpenAL|ver=1.21.5.97417|ser=1.24.9.98650|path=branches/openal/indra/lscript/lscript_library/lscript_library.cpp}} Integration into OpenAL branch. | *{{SVN|1298|rev=99021|branch=OpenAL|ver=1.21.5.97417|ser=1.24.9.98650|path=branches/openal/indra/lscript/lscript_library/lscript_library.cpp}} | ||
Integration into OpenAL branch. | |||
* Date of Release [[ Release_Notes/Second_Life_Beta_Server/1.25#Server_Release_Notes.2C_Second_Life_Beta_Server_1.25.0 | 2008-10-31 ]] | |||
|cat1=Hash | |cat1=Hash | ||
|cat2=Encoding | |cat2=Encoding | ||
Revision as of 21:16, 15 January 2014
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Summary
Function: string llSHA1String( string src );| 343 | Function ID |
| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns a string of 40 hex characters that is the 
SHA-1 security hash of src.
| • string | src |
Specification
LSL strings are stored in the UTF-8 format.
Caveats
There's no way to input a zero-byte value into this function, nor any byte value from 128-255, therefore it's currently broken for many purposes (like HMAC-SHA1). The reason is because LSL strings cannot have a unicode null character (U+0000) in them, and LSL has no escape code for the null character (many programming languages use \0 but LSL does not have this feature). llEscapeURL("%00") yields an empty string. As well, inside this function, each character with a Unicode integer value over U+0127 / 007F are dealt with in UTF-8 fashion: in the hex values, 0xC2 is appended to the byte value (hence 0x0080-0x00FF become 0xC280-0xC2FF inside the llSHA1String() routine). A JIRA has been filed for this.
Examples
<lsl> llSay(0, llSHA1String("Hello, Avatar!")); // returns 2E73318E547AF1B28CC0C96F95DDC9B1EE906B8D </lsl>
Linux Example
$ echo -n 'Hello, Avatar!' | openssl sha1 2E73318E547AF1B28CC0C96F95DDC9B1EE906B8D
See Also
Deep Notes
Prior to this, the only way to get the SHA-1 hash was to use the LSL SHA-1 port: SHA-1
History
SVN:1291 r98903 Trunk c:1.21.5.97417 s:1.24.9.98650Initial introduction.SVN:1298 r99021 Branch:OpenAL c:1.21.5.97417 s:1.24.9.98650
- Date of Release 2008-10-31
Search JIRA for related Issues
Signature |
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function string llSHA1String( string src ); |