phpstudy所有软件,已经通过360安全检测认证,phpstudy linux web面板(docker),已发布安全检测与修复

mhash_keygen_s2k

  • 29

mhash_keygen_s2k

(PHP 4 >= 4.0.4, PHP 5)

mhash_keygen_s2kGenerates a key

说明

string mhash_keygen_s2k ( int $hash , string $password , string $salt , int $bytes )

Generates a key according to the given hash, using an user provided password.

This is the Salted S2K algorithm as specified in the OpenPGP document (» RFC 2440).

Keep in mind that user supplied passwords are not really suitable to be used as keys in cryptographic algorithms, since users normally choose keys they can write on keyboard. These passwords use only 6 to 7 bits per character (or less). It is highly recommended to use some kind of transformation (like this function) to the user supplied key.

参数

hash

The hash ID used to create the key. One of the MHASH_hashname constants.

password

An user supplied password.

salt

Must be different and random enough for every key you generate in order to create different keys. Because salt must be known when you check the keys, it is a good idea to append the key to it. Salt has a fixed length of 8 bytes and will be padded with zeros if you supply less bytes.

bytes

The key length, in bytes.

返回值

Returns the generated key as a string, or FALSE on error.


  • mhash
  • mhash_count
  • mhash_get_block_size
  • mhash_get_hash_name
  • mhash_keygen_s2k
  • PHP MySQL HTML CSS JavaScript MSSQL AJAX .NET JSP Linux Mac ASP 服务器 SQL jQuery C# C++ java Android IOS oracle MongoDB SQLite wamp 交通频道

    微信扫码登陆

    打开 微信
    扫一扫登录