Module jls.util.MessageDigest
Provide message digest algorithm functionality.
Available algorithms are SHA-1, MD5, CRC32.
Class MessageDigest
| messageDigest:update (m) | Updates the digest using the specified string. |
| messageDigest:digest () | Completes and returns the digest. |
| messageDigest:reset () | Resets this MessageDigest. |
| messageDigest:getAlgorithm () | Returns the name of the algorithm. |
| MessageDigest.getMessageDigest (alg) | Returns the MessageDigest corresponding to the specified algorithm. |
| MessageDigest.getInstance (alg) | Creates a new MessageDigest. |
Class MessageDigest
The MessageDigest class.
The MessageDigest class provides access to algorithms that compute message digest or hash from any string or message.
- messageDigest:update (m)
-
Updates the digest using the specified string.
Parameters:
- m string a message to update the digest
Returns:
-
MessageDigest
this message digest instance
- messageDigest:digest ()
-
Completes and returns the digest.
Returns:
-
string
the message digest result
- messageDigest:reset ()
-
Resets this MessageDigest.
Returns:
-
MessageDigest
this message digest instance
- messageDigest:getAlgorithm ()
-
Returns the name of the algorithm.
Returns:
-
string
the name of the algorithm
- MessageDigest.getMessageDigest (alg)
-
Returns the MessageDigest corresponding to the specified algorithm.
Parameters:
- alg string The name of the algorithm
Returns:
-
The MessageDigest class
- MessageDigest.getInstance (alg)
-
Creates a new MessageDigest.
Parameters:
- alg string The name of the algorithm
Returns:
-
MessageDigest
a new MessageDigest
Usage:
local md = MessageDigest.getInstance('MD5') md:update('The quick brown fox jumps over the lazy dog'):digest()