llSHA256String
string llSHA256String(string src// Source string to hash.
);- Returns
string- Energy
- 10
Returns a string of 64 hex characters representing the SHA-256 security hash of src.
Returns a string of 64 hex characters that is the SHA-256 security hash of src.
string result = llSHA256String("");Specification
Section titled “Specification”LSL strings are stored in the UTF-8 format.
Caveats
Section titled “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 prepended to the byte value (hence 0x0080-0x00FF become 0xC280-0xC2FF inside the llSHA256String() routine).
Examples
Section titled “Examples”Example 1
llSay(0, llSHA256String("Hello, Avatar!")); // returns 3a9f9d2e4360319a62139d19bd425c16fb8439b832d74d5221ca75b54c35b4f2Example 2
Linux Example
Section titled “Linux Example”$ echo -n 'Hello, Avatar!' | openssl sha2563a9f9d2e4360319a62139d19bd425c16fb8439b832d74d5221ca75b54c35b4f2See also
Section titled “See also”Functions
Section titled “Functions”Articles
Section titled “Articles”Original wiki source
Some wiki templates and tables need their original context. View this article on the Second Life Wiki. Technical wording and examples are retained from the source; historical guidance may differ from current behavior.