Encode::Base58::GMP - High speed Base58 encoding using GMP with BigInt and MD5 support
use Encode::Base58::GMP; # Encode Int as Base58 encode_base58(12345); # => 4ER string encode_base58('0x3039'); # => 4ER string encode_base58(Math::GMPz->new('0x3039')); # => 4ER string # Encode Int as Base58 using GMP alphabet encode_base58(12345,'gmp') # => 3cn string # Decode Base58 as Math::GMPz Int decode_base58('4ER'); # => 12345 Math::GMPz object int decode_base58('4ER'); # => 12345 integer # Decode Base58 as Math::GMPz Int using GMP alphabet decode_base58('3cn','gmp'); # => 12345 Math::GMPz object # MD5 Base58 Digest md5_base58('email@example.com'); # => w6fdCRXnUXyz7EtDn5TgN9 # Convert between Flickr and GMP base58_flickr_to_gmp('123456789abcdefghijk') # => 0123456789ABCDEFGHIJ base58_gmp_to_flickr('0123456789ABCDEFGHIJ') # => 123456789abcdefghijk
Encode::Base58::GMP is a Base58 encoder/decoder implementation using the GNU Multiple Precision Arithmetic Library (GMP) with transcoding between GMP and Flickr Base58 implementations.
The default (aka Flickr) implementation is a modification of the [0-9a-zA-Z] Base62 alphabet excluding [0OIl] to improve human readability.
The GMP implementation uses the [0-9A-Za-v] alphabet.
A md5_base58 function is included to provide MD5 digests.
This module requires GMP 4.2.0 and above. Prior versions are limited to Base36.
Perl 5.8.9 or above is required to ensure proper bigint handling. If you are not using bigint numbers, it may be possible to skip the bigint tests and do a force install; however, lower Perl versions are not supported.
This routine encodes a $number in Base58. $number can be a Math::GMPz object or a binary, octal, decimal or hexidecimal number. Binary, octal and hexidecimal string literals must be prefixed with 0[Bb]/0/0[Xx] respectively. The Flickr alphabet is used unless $alphabet is set to 'gmp'.
This routine decodes a Base58 value and returns a Math::GMPz object. Use int on the return value to convert the Math::GMPz object to an integer. The Flickr alphabet is used unless $alphabet is set to 'gmp'.
This routine converts a Flickr Base58 string to a GMP Base58 string. This routine is not exported by default.
This routine converts a GMP Base58 string to a Flickr Base58 string. This routine is not exported by default.
This routine returns a MD5 digest in Base58. This routine is not exported by default.
https://rubygems.org/gems/base58_gmp (Base58 using GMP in Ruby)
http://marcus.bointon.com/archives/92-PHP-Base-62-encoding.html (Base62 using GMP in PHP)
John Wang <firstname.lastname@example.org>, http://johnwang.com
Copyright (c) 2011 John Wang
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