LlSHA1String

Return value notes

Returns a string of 40 hex characters that is the SHA-1 security hash of 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

llSay(0, llSHA1String("Hello, Avatar!")); // returns 2E73318E547AF1B28CC0C96F95DDC9B1EE906B8D

Linux Example

$ echo -n 'Hello, Avatar!' | openssl sha1
2E73318E547AF1B28CC0C96F95DDC9B1EE906B8D

History

SVN:1291 r98903 Trunk Initial introduction.
SVN:1298 r99021 Branch:OpenAL

Integration into OpenAL branch.

Date of Release 2008-10-31

Shared wiki helpers

The original page also injects shared parameter notes, caveats or issue information through these helpers. Their conditional MediaWiki logic is not reproduced here; inspect the preserved helper source for additional material.

Template:Wikipedia

Original shared helper source (conditional wiki logic is not evaluated)

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Additional wiki content

LSLC: {{LSLC|Encryption|llSHA1String}}