<?php
/**
* Class SecretStreamTest
*/
class SecretStreamTest extends PHPUnit_Framework_TestCase
{
/**
* @throws Exception
*/
public function testStateSerialization()
{
$key = ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_keygen();
$nonce = random_bytes(12);
$state = new ParagonIE_Sodium_Core_SecretStream_State($key, $nonce);
$toString = $state->toString();
$fromString = ParagonIE_Sodium_Core_SecretStream_State::fromString($toString);
$this->assertSame(
$state->getNonce(),
$fromString->getNonce()
);
$this->assertSame(
$state->getCounter(),
$fromString->getCounter()
);
$this->assertSame(
$state->getKey(),
$fromString->getKey()
);
}
/**
* @throws Exception
*/
public function testSecretStreamMain()
{
$key = ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_keygen();
list($pushState, $header) = ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_init_push($key);
$pullState = ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_init_pull($header, $key);
$this->assertEquals(bin2hex($pushState), bin2hex($pullState));
$aad = '';
for ($i = 0; $i < 20; ++$i) {
$msg = random_bytes(1024);
if ($i === 10) {
$aad = 'test';
}
$encrypt = ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_push($pushState, $msg, $aad);
list($decrypt, $tag) = ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_pull($pullState, $encrypt, $aad);
$this->assertEquals(bin2hex($pushState), bin2hex($pullState));
$this->assertEquals(bin2hex($msg), bin2hex($decrypt));
$this->assertEquals(0, $tag);
}
ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_rekey($pushState);
ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_rekey($pullState);
$this->assertEquals(bin2hex($pushState), bin2hex($pullState));
}
}
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