sodium_hex2bin

(PHP 7 >= 7.2.0, PHP 8)

sodium_hex2bin — Decodifica una cadena binaria codificada en hexadecimal

Descripción

function sodium_hex2bin(#[\SensitiveParameter] string $string, string $ignore = ""): string

Decodifica una cadena binaria codificada en hexadecimal.

Al igual que sodium_bin2hex(), sodium_hex2bin() son resistentes a ataques por canales secundarios, mientras que hex2bin() no lo es.

Parámetros

string: La representación hexadecimal de los datos.
ignore: Una cadena de caracteres opcional para los caracteres a ignorar.

Valores devueltos

Devuelve la representación binaria de los datos de la cadena string.

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User Contributed Notes 1 note

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o-ren-shi at o2 dot pl ¶

1 year ago

For some very, very weird reason, if you pass an invalid argument to this function:

<?php $cfg['blowfish_secret'] = sodium_hex2bin('f16ce59f45714194371b48dZGBmq4sRDUFy99glKIlKjlxaB76luP64d6fb13851'); ?>

then you'll get "Fatal error: Uncaught Error: Call to undefined function sodium_hex2bin()" error instead of any error that would tell you that your argument is invalid.

I still keep wondering why this isn't intercepted internally and how can PHP find one of its internal functions undefined only due to the wrong argument developer calls them with.

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