utils.sha256
Hash a string using a 256-bit hash
Prototype
s = utils.sha256 (s)Description
This returns a 256-bit SHA hash (Secure Hash Algorithm) of the string s, which may contain binary zeroes. Unlike the utils.hash function this returns the result as a straight 32-byte (256-bit) field (that is, not converted to printable hex). If you want it in readable form you must then convert it yourself (eg. with utils.tohex).
eg.
eg.
print (utils.tohex (utils.sha256 ("nick gammon")))
--> result: B3223193E1C89CB1E42E2BE2DF34874320F43E149DC315A381B08B7BC52849AD
Lua functions
- utils.activatenotepad - Actvitates the specified notepad window
- utils.appendtonotepad - Appends text to the specified notepad window
- utils.base64decode - Decode a string which was base-64 encoded
- utils.base64encode - Encode a string with base-64 encoding
- utils.callbackslist - Returns a table of plugin callback function names
- utils.choose - Display a combo box with choices in it
- utils.colourcube - Changes the colour cube used by 256-colour ANSI codes
- utils.compress - Compress a string
- utils.decompress - Decompress a string
- utils.directorypicker - Invokes the Windows standard "directory picker" dialog box
- utils.editbox - Display a large message box and get free-format reply
- utils.edit_distance - Returns the Levenshtein Edit Distance between two words
- utils.filepicker - Invokes the Windows standard "file picker" dialog box
- utils.filterpicker - Display a dialog box which filters its contents as you type
- utils.fontpicker - Invokes the Windows standard "font picker" dialog box
- utils.fromhex - Convert a string from hex
- utils.functionlist - Returns a table of MUSHclient world function names
- utils.getfontfamilies - Returns all fonts available to Windows
- utils.glyph_available - Returns the glyph index of a glyph (character) in a font
- utils.hash - Hash a string, returning the hex codes
- utils.info - Information about directories, locale, etc.
- utils.infotypes - Returns a table of all GetInfo type selectors
- utils.inputbox - Display a message box and get free-format reply
- utils.listbox - Display a dialog box with choices in it in a single selection list box
- utils.md5 - Hash a string using the 128-bit MD5 algorithm
- utils.menufontsize - Alters the size of the font used in menus
- utils.metaphone - Returns metaphones (sound-alike codes) for the supplied word
- utils.msgbox - Display a message box and get a response
- utils.multilistbox - Display a dialog box with choices in it in a multiple selection list box
- utils.readdir - Read a disk directory into a table
- utils.reload_global_prefs - Forces global preferences file to be reloaded
- utils.sendtofront - Bring a window to the front
- utils.shellexecute - Executes a Windows "shell" command
- utils.spellcheckdialog - Spell-checker dialog
- utils.split - Split a delimited string into a table
- utils.timer - Returns the high-resolution timer output
- utils.tohex - Convert a string into hex
- utils.umsgbox - Display a message box and get a response (Unicode)
- utils.utf8convert - Encodes a string into a UTF-8 string
- utils.utf8decode - Encodes a series of Unicode codes into a UTF-8 string
- utils.utf8encode - Encodes a series of Unicode codes into a UTF-8 string
- utils.utf8sub - Returns a substring of a UTF-8 string
- utils.utf8valid - Checks if a UTF-8 string is valid
- utils.xmlread - Parses an XML string into a nested table
Topics
- Lua LPEG library
- Lua PCRE regular expression functions
- Lua base functions
- Lua bc (big number) functions
- Lua bit manipulation functions
- Lua coroutine functions
- Lua debug functions
- Lua io functions
- Lua math functions
- Lua os functions
- Lua package functions
- Lua script extensions
- Lua string functions
- Lua syntax
- Lua table functions
- Lua utilities
- Scripting callbacks - plugins
- Scripting