<?php
/**
* Class KeyConversionTest
*/
class KeyConversionTest extends PHPUnit_Framework_TestCase
{
/**
* @before
*/
public function before()
{
ParagonIE_Sodium_Compat::$disableFallbackForUnitTests = true;
}
/**
* @throws SodiumException
* @throws TypeError
*/
public function testPublicKeyConversion()
{
$sign_keypair = ParagonIE_Sodium_Compat::crypto_sign_keypair();
$sign_secret = ParagonIE_Sodium_Compat::crypto_sign_secretkey($sign_keypair);
$sign_public = ParagonIE_Sodium_Compat::crypto_sign_publickey($sign_keypair);
$sk_convert = ParagonIE_Sodium_Compat::crypto_sign_ed25519_sk_to_curve25519($sign_secret);
$pk_expect = ParagonIE_Sodium_Compat::crypto_box_publickey_from_secretkey($sk_convert);
$pk_convert = ParagonIE_Sodium_Compat::crypto_sign_ed25519_pk_to_curve25519($sign_public);
$this->assertSame(
ParagonIE_Sodium_Core_Util::bin2hex($pk_expect),
ParagonIE_Sodium_Core_Util::bin2hex($pk_convert),
'Different strings from different approaches of converting Ed25519 -> X25519'
);
$messages = array(
'test',
str_repeat('A', 100),
random_bytes(100)
);
foreach($messages as $message) {
$sealed = ParagonIE_Sodium_Compat::crypto_box_seal($message, $pk_convert);
$opened = ParagonIE_Sodium_Compat::crypto_box_seal_open($sealed, $sk_convert . $pk_convert);
$this->assertSame($message, $opened);
$opened = ParagonIE_Sodium_Compat::crypto_box_seal_open($sealed, $sk_convert . $pk_expect);
$this->assertSame($message, $opened);
}
}
}
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