openssl_get_cipher_methods

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

openssl_get_cipher_methods — Récupère la liste des méthodes de chiffrements disponibles

Description

openssl_get_cipher_methods(bool $aliases = false): array

Récupère la liste des méthodes de chiffrements disponibles.

Liste de paramètres

aliases

Passez true si vous voulez que les alias des méthodes chiffrements soient inclus dans le tableau retourné.

Valeurs de retour

Un array des méthodes de chiffrements disponibles. Il est à noter que antérieur à OpenSSL 1.1.1, les méthodes de chiffrements étaient retournées en majuscule et en minuscule ; à partir de OpenSSL 1.1.1 seul la variante en minuscule est retourné.

Exemples

Exemple #1 Exemple openssl_get_cipher_methods()

Montre à quoi ressemblent les ciphers disponibles, ainsi que les alias disponibles.

<?php
$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);
?>

Résultat de l'exemple ci-dessus est similaire à :

Array
(
    [0] => aes-128-cbc
    [1] => aes-128-cbc-hmac-sha1
    [2] => aes-128-cbc-hmac-sha256
    [3] => aes-128-ccm
    [4] => aes-128-cfb
    [5] => aes-128-cfb1
    [6] => aes-128-cfb8
    [7] => aes-128-ctr
    [9] => aes-128-gcm
    [10] => aes-128-ocb
    [11] => aes-128-ofb
    [12] => aes-128-xts
    [13] => aes-192-cbc
    [14] => aes-192-ccm
    [15] => aes-192-cfb
    [16] => aes-192-cfb1
    [17] => aes-192-cfb8
    [18] => aes-192-ctr
    [20] => aes-192-gcm
    [21] => aes-192-ocb
    [22] => aes-192-ofb
    [23] => aes-256-cbc
    [24] => aes-256-cbc-hmac-sha1
    [25] => aes-256-cbc-hmac-sha256
    [26] => aes-256-ccm
    [27] => aes-256-cfb
    [28] => aes-256-cfb1
    [29] => aes-256-cfb8
    [30] => aes-256-ctr
    [32] => aes-256-gcm
    [33] => aes-256-ocb
    [34] => aes-256-ofb
    [35] => aes-256-xts
    [36] => aria-128-cbc
    [37] => aria-128-ccm
    [38] => aria-128-cfb
    [39] => aria-128-cfb1
    [40] => aria-128-cfb8
    [41] => aria-128-ctr
    [43] => aria-128-gcm
    [44] => aria-128-ofb
    [45] => aria-192-cbc
    [46] => aria-192-ccm
    [47] => aria-192-cfb
    [48] => aria-192-cfb1
    [49] => aria-192-cfb8
    [50] => aria-192-ctr
    [52] => aria-192-gcm
    [53] => aria-192-ofb
    [54] => aria-256-cbc
    [55] => aria-256-ccm
    [56] => aria-256-cfb
    [57] => aria-256-cfb1
    [58] => aria-256-cfb8
    [59] => aria-256-ctr
    [61] => aria-256-gcm
    [62] => aria-256-ofb
    [63] => bf-cbc
    [64] => bf-cfb
    [66] => bf-ofb
    [67] => camellia-128-cbc
    [68] => camellia-128-cfb
    [69] => camellia-128-cfb1
    [70] => camellia-128-cfb8
    [71] => camellia-128-ctr
    [73] => camellia-128-ofb
    [74] => camellia-192-cbc
    [75] => camellia-192-cfb
    [76] => camellia-192-cfb1
    [77] => camellia-192-cfb8
    [78] => camellia-192-ctr
    [80] => camellia-192-ofb
    [81] => camellia-256-cbc
    [82] => camellia-256-cfb
    [83] => camellia-256-cfb1
    [84] => camellia-256-cfb8
    [85] => camellia-256-ctr
    [87] => camellia-256-ofb
    [88] => cast5-cbc
    [89] => cast5-cfb
    [91] => cast5-ofb
    [92] => chacha20
    [93] => chacha20-poly1305
    [111] => id-aes128-CCM
    [112] => id-aes128-GCM
    [113] => id-aes128-wrap
    [114] => id-aes128-wrap-pad
    [115] => id-aes192-CCM
    [116] => id-aes192-GCM
    [117] => id-aes192-wrap
    [118] => id-aes192-wrap-pad
    [119] => id-aes256-CCM
    [120] => id-aes256-GCM
    [121] => id-aes256-wrap
    [122] => id-aes256-wrap-pad
    [124] => idea-cbc
    [125] => idea-cfb
    [127] => idea-ofb
    [137] => seed-cbc
    [138] => seed-cfb
    [140] => seed-ofb
    [141] => sm4-cbc
    [142] => sm4-cfb
    [143] => sm4-ctr
    [145] => sm4-ofb
)
Array
(
    [36] => aes128
    [37] => aes128-wrap
    [38] => aes192
    [39] => aes192-wrap
    [40] => aes256
    [41] => aes256-wrap
    [69] => aria128
    [70] => aria192
    [71] => aria256
    [72] => bf
    [77] => blowfish
    [99] => camellia128
    [100] => camellia192
    [101] => camellia256
    [102] => cast
    [103] => cast-cbc
    [146] => idea
    [164] => seed
    [169] => sm4
)

Voir aussi