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Don't recommend base64 encoding of random_bytes result #9838

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May 29, 2018
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Don't recommend base64 encoding of random_bytes result #9838

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5 changes: 2 additions & 3 deletions components/security/secure_tools.rst
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Expand Up @@ -41,9 +41,8 @@ the number bytes passed as an argument (10 in the above example).
The ``random_bytes()`` function returns a binary string which may contain
the ``\0`` character. This can cause trouble in several common scenarios,
such as storing this value in a database or including it as part of the
URL. The solution is to encode or hash the value returned by
``random_bytes()`` (to do that, you can use a simple ``base64_encode()``
PHP function).
URL. The solution is to hash the value returned by ``random_bytes()`` with
a hashing function such as :phpfunction:`md5` or :phpfunction:`sha1`.

Generating a Secure Random Number
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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