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StringTools

  

Hash

  

compute a hash value for a string

 

Calling Sequence

Parameters

Options

Description

Examples

Calling Sequence

Hash( s )

Hash( s, method=m )

Parameters

s

-

Maple string or byte Array; string to be hashed

m

-

one of "md4", "md5", or "sha1".

Options

• 

method : one of "md4", "md5", or "sha1". This specifies the hashing algorithm to use. The default value is "md5".

Description

• 

The procedure Hash computes a hash, or message digest of the string 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: "md5", "md4" 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 Maple string or a ByteArray. Using a ByteArray is necessary if the desired input contains bytes that are zero: a string cannot contain such bytes.

• 

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

Examples

withStringTools:

Hash

d41d8cd98f00b204e9800998ecf8427e

(1)

Hashabcde

ab56b4d92b40713acc5af89985d4b786

(2)

Hashxxxx

ea416ed0759d46a8de58f63a59077499

(3)

Hashxxxxx

fb0e22c79ac75679e9881e6ba183b354

(4)

aArray1,0,4,'datatype=integer[1]'

a:=104

(5)

Hasha

2fd5cec7a3d4210b1676d83b998d6533

(6)

Hashabc,'method'=sha1

a9993e364706816aba3e25717850c26c9cd0d89d

(7)

Hashabc,'method'=md4

a448017aaf21d8525fc10ae87aa6729d

(8)

See Also

FileTools[Hash]

string

StringTools

 


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