Crypt/Math.php

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Zend Framework
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Category
Zend  
Copyright
Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  
Package
Zend_Crypt  
Subpackage
Math  
Version
$Id$  

\Zend_Crypt_Math

Package: Zend_Crypt
Support for arbitrary precision mathematics in PHP.
Zend_Crypt_Math_BigInteger is a wrapper across three PHP extensions: bcmath, gmp and big_int. Since each offer similar functionality, but availability of each differs across installations of PHP, this wrapper attempts to select the fastest option available and encapsulate a subset of its functionality which all extensions share in common. This class requires one of the three extensions to be available. BCMATH while the slowest, is available by default under Windows, and under Unix if PHP is compiled with the flag "--enable-bcmath". GMP requires the gmp library from http://www.swox.com/gmp/ and PHP compiled with the "--with-gmp" flag. BIG_INT support is available from a big_int PHP library available from only from PECL (a Windows port is not available).
Parent(s)
\Zend_Crypt_Math_BigInteger
Category
Zend  
Copyright
Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  

Methods

methodpublicbtwoc(string $long) : string

Get the big endian two's complement of a given big integer in binary notation

Parameters
NameTypeDescription
$longstring
Returns
TypeDescription
string
methodpublicfromBinary(string $binary) : string

Translate a binary form into a big integer string

Parameters
NameTypeDescription
$binarystring
Returns
TypeDescription
string
methodpublicrand(string | int $minimum, string | int $maximum) : string

Generate a pseudorandom number within the given range.

Will attempt to read from a systems RNG if it exists or else utilises a simple random character to maximum length process. Simplicity is a factor better left for development...
Parameters
NameTypeDescription
$minimumstring | int
$maximumstring | int
Returns
TypeDescription
string
methodpublictoBinary(string $integer) : string

Translate a big integer string into a binary form

Parameters
NameTypeDescription
$integerstring
Returns
TypeDescription
string
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