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各言語でのMD5ハッシュの作り方

Last updated at Posted at 2015-01-26

PHPでは

md5('hogehoge');

Rubyでは

require 'digest'
Digest::MD5.hexdigest('hogehoge')

Java(Androidも)では

String str = "hogehoge";
String md5_str = "";
try {
    byte[] str_bytes = str.getBytes("UTF-8");
    MessageDigest md = MessageDigest.getInstance("MD5");
    byte[] md5_bytes = md.digest(str_bytes);
    BigInteger big_int = new BigInteger(1, md5_bytes);
    md5_str = big_int.toString(16);
}catch(Exception e){
    // 略
}

JavaScriptではhex_md5.jsを使用して

hex_md5('hogehoge');

mongodbでは初めからhex_md5()が使えるので

hex_md5('hogehoge');

Objective-Cではちょっと長いのでStackoverflowの回答を参考に。

他の言語は触らないので知りません。

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