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Version 1.4.3 - 2018-04-04

Fix version number in constant in lib/random.php
Upgrade your dependency from ^1 to ^1|^2 if you want other changes (i.e. better compatibility with type-safety), because the v2 branch is where most of the development effort is focused. Continued support for v1.x is considered "only for emergencies".

Version 1.4.2 - 2017-03-13

Backport changes from version 2:
- Version 2.0.9 - 2017-03-03
  - More Psalm integration fixes.
- Version 2.0.8 - 2017-03-03
  - Prevent function already declared error for random_int() caused by misusing the library (really you should only ever include lib/random.php and never any of the other files). See #125.
- Version 2.0.6, 2.0.7 - 2017-02-27
  - Just updates to psalm.xml to silence false positives.
- Version 2.0.5 - 2017-02-27
  - Run random_compat through the static analysis tool, psalm, as part of our continuous integration process.
  - Minor readability enhancements (#122 and several docblock changes).
- Version 2.0.4 - 2016-11-07
  - Don't unnecessarily prevent mcrypt_create_iv() from being used. See #111.
- Version 2.0.3 - 2016-10-17
  - Updated lib/error_polyfill.php to resolve corner cases.
  - The README was updated to help users troubleshoot and fix insecure environments.
  - Tags will now be signed by the GnuPG key used by the security team at Paragon Initiative Enterprises, LLC.
- Version 2.0.2 - 2016-04-03
  - Added a consistency check (discovered by Taylor Hornby in his PHP encryption library). It wasn't likely causing any trouble for us.

Version 1.4.1 - 2016-03-18

Update comment in random.php

Version 1.4.0 - 2016-03-18

Restored OpenSSL in the version 1 branch in preparation to remove OpenSSL in version 2.

Version 1.3.1/1.2.3 - 2016-03-18

Add more possible values to open_baseir check.

Version 1.3.0 - 2016-03-17

Removed openssl_random_pseudo_bytes() entirely. If you are using random_compat in PHP on a Unix-like OS but cannot access /dev/urandom, version 1.3+ will throw an Exception. If you want to trust OpenSSL, feel free to write your own fallback code. e.g.
```
try {
    $bytes = random_bytes(32);
} catch (Exception $ex) {
    $strong = false;
    $bytes = openssl_random_pseudo_bytes(32, $strong);
    if (!$strong) {
        throw $ex;
    }
}
```

Version 1.2.2 - 2016-03-11

To prevent applications from hanging, if /dev/urandom is not accessible to PHP, skip mcrypt (which just fails before giving OpenSSL a chance and was morally equivalent to not offering OpenSSL at all).

Version 1.2.1 - 2016-02-29

PHP 5.6.10 - 5.6.12 will hang when mcrypt is used on Unix-based operating systems (PHP bug 69833). If you are running one of these versions, please upgrade (or make sure /dev/urandom is readable) otherwise you're relying on OpenSSL.

Version 1.2.0 - 2016-02-05

Whitespace and other cosmetic changes
Added a changelog.
We now ship with a command line utility to build a PHP Archive from the command line.

Every time we publish a new release, we will also upload a .phar to Github. Our public key is signed by our GPG key.

Version 1.1.6 - 2016-01-29

Eliminate open_basedir warnings by detecting this configuration setting. (Thanks @oucil for reporting this.)
Added install instructions to the README.
Documentation cleanup (there is, in fact, no MCRYPT_CREATE_IV constant, I meant to write MCRYPT_DEV_URANDOM)

Version 1.1.5 - 2016-01-06

Prevent fatal errors on platforms with older versions of libsodium.

Version 1.1.4 - 2015-12-10

Thanks @narfbg for critiquing the previous patch and suggesting a fix.

Version 1.1.3 - 2015-12-09

The test for COM in disabled_classes is now case-insensitive.

Version 1.1.2 - 2015-12-09

Don't instantiate COM if it's a disabled class. Removes the E_WARNING on Windows.

Version 1.1.1 - 2015-11-30

Fix a performance issue with /dev/urandom buffering.

Version 1.1.0 - 2015-11-09

Fix performance issues with ancient versions of PHP on Windows, but dropped support for PHP < 5.4.1 without mcrypt on Windows 7+ in the process. Since this is a BC break, semver dictates a minor version bump.

Version 1.0.10 - 2015-10-23

Avoid a performance killer with OpenSSL on Windows PHP 5.3.0 - 5.3.3 that was affecting WordPress users.
Use $var = null instead of unset($var) to avoid triggering the garbage collector and slowing things down.

Version 1.0.9 - 2015-10-20

There is an outstanding issue mcrypt_create_iv() and PHP 7's random_bytes() on Windows reported by @nicolas-grekas caused by proc_open() and environment variable handling (discovered by Appveyor when developing Symfony).

Since the break is consistent, it's not our responsibility to fix it, but we should fail the same way PHP 7 will (i.e. throw an Exception rather than raise an error and then throw an Exception).

Version 1.0.8 - 2015-10-18

Fix usability issues with Windows (new COM('CAPICOM.Utilities.1') is not always available).
You can now test all the possible drivers by running phpunit.sh each in the tests directory.

Version 1.0.7 - 2015-10-16

Several large integer handling bugfixes were contributed by @oittaa.

Version 1.0.6 - 2015-10-15

Don't let the version number fool you, this was a pretty significant change.

Added support for ext-libsodium, if it exists on the system. This is morally equivalent to adding getrandom(2) support without having to expose the syscall interface in PHP-land.
Relaxed open_basedir restrictions. In previous versions, if open_basedir was set, PHP wouldn't even try to read from /dev/urandom. Now it will still do so if you can.
Fixed integer casting inconsistencies between random_compat and PHP 7.
Handle edge cases where an integer overflow turns one of the parameters into a float.

One change that we discussed was making random_bytes() and random_int() strict typed; meaning you could only pass integers to either function. While most veteran programmers are probably only doing this already (we strongly encourage it), it wouldn't be consistent with how these functions behave in PHP 7. Please use these functions responsibly.

We've had even more of the PHP community involved in this release; the contributors list has been updated. If I forgot anybody, I promise you it's not because your contributions (either code or ideas) aren't valued, it's because I'm a bit overloaded with information at the moment. Please let me know immediately and I will correct my oversight.

Thanks everyone for helping make random_compat better.

Version 1.0.5 - 2015-10-08

Got rid of the methods in the Throwable interface, which was causing problems on PHP 5.2. While we would normally not care about 5.2 (since 5.4 and earlier are EOL'd), we do want to encourage widespread adoption (e.g. Wordpress).

Version 1.0.4 - 2015-10-02

Removed redundant if() checks, since lib/random.php is the entrypoint people should use.

Version 1.0.3 - 2015-10-02

This release contains bug fixes contributed by the community.

Avoid a PHP Notice when PHP is running without the mbstring extension
Use a compatible version of PHPUnit for testing on older versions of PHP

Although none of these bugs were outright security-affecting, updating ASAP is still strongly encouraged.

Version 1.0.2 - 2015-09-23

Less strict input validation on random_int() parameters. PHP 7's random_int() accepts strings and floats that look like numbers, so we should too.

Thanks @dd32 for correcting this oversight.

Version 1.0.1 - 2015-09-10

Instead of throwing an Exception immediately on insecure platforms, only do so when random_bytes() is invoked.

Version 1.0.0 - 2015-09-07

Our API is now stable and forward-compatible with the CSPRNG features in PHP 7 (as of 7.0.0 RC3).

A lot of great people have contributed their time and expertise to make this compatibility library possible. That this library has reached a stable release is more a reflection on the community than it is on PIE.

We are confident that random_compat will serve as the simplest and most secure CSPRNG interface available for PHP5 projects.

Version 0.9.7 (pre-release) - 2015-09-01

An attempt to achieve compatibility with Error/TypeError in the RFC.

This should be identical to 1.0.0 sans any last-minute changes or performance enhancements.

Version 0.9.6 (pre-release) - 2015-08-06

Split the implementations into their own file (for ease of auditing)
Corrected the file type check after /dev/urandom has been opened (thanks @narfbg and @jedisct1)

Version 0.9.5 (pre-release) - 2015-07-31

Validate that /dev/urandom is a character device
- Reported by @lokdnet
- Investigated by @narfbg and frymaster on StackOverflow
Remove support for /dev/arandom which is an old OpenBSD feature, thanks @jedisct1
Prevent race conditions on the filetype() check, thanks @jedisct1
Buffer file reads to 8 bytes (performance optimization; PHP defaults to 8192 bytes)

Version 0.9.4 (pre-release) - 2015-07-27

Add logic to verify that /dev/arandom and /dev/urandom are actually devices.
Some clean-up in the comments

Version 0.9.3 (pre-release) - 2015-07-22

Unless the Exceptions change to PHP 7 fails, this should be the last pre-release version. If need be, we'll make one more pre-release version with compatible behavior.

Changes since 0.9.2:

Prioritize /dev/arandom and /dev/urandom over mcrypt. @oittaa removed the -1 and +1 juggling on $range calculations for random_int()
Whitespace and comment clean-up, plus better variable names
Actually put a description in the composer.json file...

Version 0.9.2 (pre-release) - 2015-07-16

Consolidated $range > PHP_INT_MAX logic with $range <= PHP_INT_MAX (thanks @oittaa and @CodesInChaos)
tests/phpunit.sh now also runs the tests with mbstring.func_overload and open_basedir
Style consistency, whitespace cleanup, more meaningful variable names

Version 0.9.1 (pre-release) - 2015-07-09

Return random values on integer ranges > PHP_INT_MAX (thanks @CodesInChaos)
Determined CSPRNG preference:
1. mcrypt_create_iv() with MCRYPT_DEV_URANDOM
2. /dev/arandom
3. /dev/urandom
4. openssl_random_pseudo_bytes()
Optimized backend selection (thanks @lt)
Fix #3 (thanks @scottchiefbaker)

Version 0.9.0 (pre-release) - 2015-07-07

This should be a sane polyfill for PHP 7's random_bytes() and random_int(). We hesitate to call it production ready until it has received sufficient third party review.

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