@ 2017-05-24T17:42:18Z <?php
function insecureEncryptDoNotUse(string $plaintext, string $key): string
{
return \openssl_encrypt(
$plaintext,
'aes-128-ctr',
$key,
OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING,
str_repeat("\x00", 16)
);
}
function insecureDecryptDoNotUse(string $ciphertext, string $key): string
{
return \openssl_decrypt(
$ciphertext,
'aes-128-ctr',
$key,
OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING,
str_repeat("\x00", 16)
);
}
$key = str_repeat("3.14", 4);
$ciphertextA = insecureEncryptDoNotUse('0000000000000001', $key);
$xor = str_repeat("\x00", mb_strlen($ciphertextA, '8bit') - 1) . "\x40";
$ciphertextB = $ciphertextA ^ $xor;
var_dump(insecureDecryptDoNotUse($ciphertextB, $key));
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Output for 7.0.0 - 7.0.33 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.34 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.31 , 8.2.0 - 8.2.27 , 8.3.0 - 8.3.15 , 8.4.1 - 8.4.2 Fatal error: Uncaught Error: Call to undefined function openssl_encrypt() in /in/8e4J0:6
Stack trace:
#0 /in/8e4J0(28): insecureEncryptDoNotUse('000000000000000...', '3.143.143.143.1...')
#1 {main}
thrown in /in/8e4J0 on line 6
Process exited with code 255 . Output for 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.40 Parse error: syntax error, unexpected ':', expecting '{' in /in/8e4J0 on line 4
Process exited with code 255 . Output for 5.0.0 - 5.0.5 Parse error: parse error, unexpected ':', expecting '{' in /in/8e4J0 on line 4
Process exited with code 255 . Output for 4.4.2 - 4.4.9 Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/8e4J0 on line 4
Process exited with code 255 . Output for 4.3.0 - 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 Parse error: parse error, unexpected T_STRING, expecting ')' in /in/8e4J0 on line 4
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error, expecting `')'' in /in/8e4J0 on line 4
Process exited with code 255 . preferences:dark mode live preview
93.93 ms | 412 KiB | 5 Q