PHP openssl_get_cipher_methods OpenSSL 函数

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  定义和用法

  openssl_get_cipher_methods - 获取可用的加密算法
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  版本支持

  PHP4	PHP5	PHP7
  不支持	v5.3.0+支持	支持

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  语法

  openssl_get_cipher_methods( [ bool $aliases = false ] )

  openssl_get_cipher_methods() 获取可用的加密算法的列表。
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  参数

  参数	必需的	描述
  aliases	否	如果密码别名应该包含在返回的数组中，则设置为 TRUE.

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  返回值

  一个包含可用加密算法的数组。
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  示例

  $ciphers             = openssl_get_cipher_methods();
  $ciphers_and_aliases = openssl_get_cipher_methods(true);
  $cipher_aliases      = array_diff($ciphers_and_aliases, $ciphers);
  
  //ECB mode should be avoided
  $ciphers = array_filter( $ciphers, function($n) { return stripos($n,"ecb")===FALSE; } );
  
  //At least as early as Aug 2016, Openssl declared the following weak: RC2, RC4, DES, 3DES, MD5 based
  $ciphers = array_filter( $ciphers, function($c) { return stripos($c,"des")===FALSE; } );
  $ciphers = array_filter( $ciphers, function($c) { return stripos($c,"rc2")===FALSE; } );
  $ciphers = array_filter( $ciphers, function($c) { return stripos($c,"rc4")===FALSE; } );
  $ciphers = array_filter( $ciphers, function($c) { return stripos($c,"md5")===FALSE; } );
  $cipher_aliases = array_filter($cipher_aliases,function($c) { return stripos($c,"des")===FALSE; } );
  $cipher_aliases = array_filter($cipher_aliases,function($c) { return stripos($c,"rc2")===FALSE; } );
  
  print_r($ciphers);
  print_r($cipher_aliases);
  

  尝试一下
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  相关页面

  openssl_get_md_methods() - 获取可用的摘要算法