method=one of md4, md5, or sha1.

This specifies the hashing algorithm to use. The default value is md5.

output=one of string or integer

This specifies whether the output should be a string with a hexadecimal representation of the hashed value, or an integer. The default value is string.

The procedure Hash computes a hash, or message digest of the file s. By default, it uses the MD5 message digest algorithm. However, by using the method= option, you can select a different hashing algorithm. The available methods are: md4, md5 and sha1.

This hashed value is represented by a string that is a hexadecimal representation of the integer value of the hash.

The input can be a file or URL.

It is extremely unlikely that two distinct files of arbitrary length will produce the same hashed value.

file := FileTools:-JoinPath( ["images/rollercoaster.jpg"], base=datadir );

$''C:\backslash Program\; Files\backslash Maple\; 2016\backslash data\backslash images\backslash rollercoaster.jpg''$

FileTools:-Hash( file );

method = "md5", output = string

$''ad20d15e446e23ce8bb537f96720455c''$

FileTools:-Hash( file, method=md4 );

method = md4, output = string

$''9733588532282617f53c026db00810a6''$

FileTools:-Hash( file, method=sha1 );

method = sha1, output = string

$''1af7332b4865b8254813bc07b068a92fe0d1381f''$

FileTools:-Hash( file, method=sha1, output=integer );

method = sha1, output = integer

$153946501560413761515295793599215680815507781663$

FileTools:-Hash( "http://www.maplesoft.com/data/examples/jpg/fingerprint.jpg", method="sha1" );

$''1c2c82bd2b358b7fd2acb7dfffe3b67662f183a5''$

The FileTools[Hash] command was introduced in Maple 2016.

For more information on Maple 2016 changes, see Updates in Maple 2016.

The FileTools[Hash] command was updated in Maple 2019.