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RsaTest.php
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<?php declare(strict_types=1);
namespace WeChatPay\Tests\Crypto;
use const PHP_MAJOR_VERSION;
use const OPENSSL_PKCS1_OAEP_PADDING;
use const OPENSSL_PKCS1_PADDING;
use function file_get_contents;
use function method_exists;
use function openssl_pkey_get_private;
use function openssl_pkey_get_public;
use function openssl_x509_read;
use function preg_match;
use function random_bytes;
use function sprintf;
use function str_replace;
use function substr;
use function rtrim;
use UnexpectedValueException;
use WeChatPay\Crypto\Rsa;
use PHPUnit\Framework\TestCase;
class RsaTest extends TestCase
{
const BASE64_EXPRESSION = '#^[a-zA-Z0-9\+/]+={0,2}$#';
const FIXTURES = __DIR__ . '/../fixtures/mock.%s.%s';
const EVELOPE = '#-{5}BEGIN[^-]+-{5}\r?\n(?<base64>[^-]+)\r?\n-{5}END[^-]+-{5}#';
public function testClassConstants()
{
self::assertIsString(Rsa::KEY_TYPE_PRIVATE);
self::assertIsString(Rsa::KEY_TYPE_PUBLIC);
}
/**
* @param string $type
* @param string $suffix
*/
private function getMockContents(string $type, string $suffix): string
{
$file = sprintf(self::FIXTURES, $type, $suffix);
$pkey = file_get_contents($file);
preg_match(self::EVELOPE, $pkey ?: '', $matches);
return str_replace(["\r", "\n"], '', $matches['base64'] ?: '');
}
public function testFromPkcs8()
{
$thing = $this->getMockContents('pkcs8', 'key');
self::assertIsString($thing);
if (method_exists($this, 'assertMatchesRegularExpression')) {
$this->assertMatchesRegularExpression(self::BASE64_EXPRESSION, $thing);
} else {
self::assertRegExp(self::BASE64_EXPRESSION, $thing);
}
$pkey = Rsa::fromPkcs8($thing);
if (8 === PHP_MAJOR_VERSION) {
self::assertIsObject($pkey);
} else {
self::assertIsResource($pkey);
}
}
public function testPkcs1ToSpki()
{
/**
* @var string $spki
* @var string $pkcs1
*/
list(, , list($spki), list($pkcs1)) = array_values($this->keyPhrasesDataProvider());
self::assertStringStartsWith('public.spki://', $spki);
self::assertStringStartsWith('public.pkcs1://', $pkcs1);
self::assertEquals(substr($spki, 14), Rsa::pkcs1ToSpki(substr($pkcs1, 15)));
}
/**
* @return array<string,array{string,string}>
*/
public function pkcs1PhrasesDataProvider(): array
{
return [
'`private.pkcs1://`' => [$this->getMockContents('pkcs1', 'key'), Rsa::KEY_TYPE_PRIVATE],
'`public.pkcs1://`' => [$this->getMockContents('pkcs1', 'pem'), Rsa::KEY_TYPE_PUBLIC],
];
}
/**
* @dataProvider pkcs1PhrasesDataProvider
*
* @param string $thing
*/
public function testFromPkcs1(string $thing, string $type)
{
if (method_exists($this, 'assertMatchesRegularExpression')) {
$this->assertMatchesRegularExpression(self::BASE64_EXPRESSION, $thing);
} else {
self::assertRegExp(self::BASE64_EXPRESSION, $thing);
}
$pkey = Rsa::fromPkcs1($thing, $type);
if (8 === PHP_MAJOR_VERSION) {
self::assertIsObject($pkey);
} else {
self::assertIsResource($pkey);
}
}
public function testFromSpki()
{
$thing = $this->getMockContents('spki', 'pem');
self::assertIsString($thing);
if (method_exists($this, 'assertMatchesRegularExpression')) {
$this->assertMatchesRegularExpression(self::BASE64_EXPRESSION, $thing);
} else {
self::assertRegExp(self::BASE64_EXPRESSION, $thing);
}
$pkey = Rsa::fromSpki($thing);
if (8 === PHP_MAJOR_VERSION) {
self::assertIsObject($pkey);
} else {
self::assertIsResource($pkey);
}
}
/**
* @return array<string,array{\OpenSSLAsymmetricKey|resource|string|mixed,string}>
*/
public function keyPhrasesDataProvider(): array
{
return [
'`private.pkcs1://` string' => ['private.pkcs1://' . $this->getMockContents('pkcs1', 'key'), Rsa::KEY_TYPE_PRIVATE],
'`private.pkcs8://` string' => ['private.pkcs8://' . $this->getMockContents('pkcs8', 'key'), Rsa::KEY_TYPE_PRIVATE],
'`public.spki://` string' => ['public.spki://' . $this->getMockContents('spki', 'pem'), Rsa::KEY_TYPE_PUBLIC],
'`public.pkcs1://` string' => ['public.pkcs1://' . $this->getMockContents('pkcs1', 'pem'), Rsa::KEY_TYPE_PUBLIC],
'`file://` PKCS#1 privateKey path string' => [$f = 'file://' . sprintf(self::FIXTURES, 'pkcs1', 'key'), Rsa::KEY_TYPE_PRIVATE],
'OpenSSLAsymmetricKey/resource(private)1' => [openssl_pkey_get_private($f), Rsa::KEY_TYPE_PRIVATE],
'PKCS#1 privateKey contents' => [$f = (string)file_get_contents($f), Rsa::KEY_TYPE_PRIVATE],
'OpenSSLAsymmetricKey/resource(private)2' => [openssl_pkey_get_private($f), Rsa::KEY_TYPE_PRIVATE],
'`file://` PKCS#8 privateKey path string' => [$f = 'file://' . sprintf(self::FIXTURES, 'pkcs8', 'key'), Rsa::KEY_TYPE_PRIVATE],
'OpenSSLAsymmetricKey/resource(private)3' => [openssl_pkey_get_private($f), Rsa::KEY_TYPE_PRIVATE],
'PKCS#8 privateKey contents' => [$f = (string)file_get_contents($f), Rsa::KEY_TYPE_PRIVATE],
'OpenSSLAsymmetricKey/resource(private)4' => [openssl_pkey_get_private($f), Rsa::KEY_TYPE_PRIVATE],
'`file://` SPKI publicKey path string' => [$f = 'file://' . sprintf(self::FIXTURES, 'spki', 'pem'), Rsa::KEY_TYPE_PUBLIC],
'OpenSSLAsymmetricKey/resource(public)1' => [openssl_pkey_get_public($f), Rsa::KEY_TYPE_PUBLIC],
'SKPI publicKey contents' => [$f = (string)file_get_contents($f), Rsa::KEY_TYPE_PUBLIC],
'OpenSSLAsymmetricKey/resource(public)2' => [openssl_pkey_get_public($f), Rsa::KEY_TYPE_PUBLIC],
'pkcs1 publicKey contents' => [(string)file_get_contents(sprintf(self::FIXTURES, 'pkcs1', 'pem')), Rsa::KEY_TYPE_PUBLIC],
'`file://` x509 certificate string' => [$f = 'file://' . sprintf(self::FIXTURES, 'sha256', 'crt'), Rsa::KEY_TYPE_PUBLIC],
'x509 certificate contents string' => [$f = (string)file_get_contents($f), Rsa::KEY_TYPE_PUBLIC],
'OpenSSLCertificate/resource' => [openssl_x509_read($f), Rsa::KEY_TYPE_PUBLIC],
'`file://` PKCS#8 encrypted privateKey' => [
[
$f = 'file://' . sprintf(self::FIXTURES, 'encrypted.pkcs8', 'key'),
$w = rtrim((string)file_get_contents(sprintf(self::FIXTURES, 'pwd', 'txt')))
],
Rsa::KEY_TYPE_PRIVATE
],
'PKCS#8 encrypted privateKey contents' => [[(string)file_get_contents($f), $w], Rsa::KEY_TYPE_PRIVATE],
];
}
/**
* @dataProvider keyPhrasesDataProvider
*
* @param \OpenSSLAsymmetricKey|resource|string|mixed $thing
*/
public function testFrom($thing, string $type)
{
$pkey = Rsa::from($thing, $type);
if (8 === PHP_MAJOR_VERSION) {
self::assertIsObject($pkey);
} else {
self::assertIsResource($pkey);
}
}
/**
* @return array<string,array{string,string|\OpenSSLAsymmetricKey|resource|mixed,string|\OpenSSLAsymmetricKey|resource|mixed}>
*/
public function keysProvider(): array
{
/**
* @var string $pub1
* @var string $pub2
* @var string $pri1
* @var string $pri2
*/
list(
list($pri1), list($pri2),
list($pub1), list($pub2),
list($pri3), list($pri4), list($pri5), list($pri6),
list($pri7), list($pri8), list($pri9), list($pri0),
list($pub3), list($pub4), list($pub5), list($pub6),
list($pub7), list($crt1), list($crt2), list($crt3),
list($encryptedKey1), list($encryptedKey2)
) = array_values($this->keyPhrasesDataProvider());
$keys = [
'plaintext, `public.spki://`, `private.pkcs1://`' => [random_bytes( 8), Rsa::fromSpki(substr($pub1, 14)), Rsa::fromPkcs1(substr($pri1, 16))],
'plaintext, `public.spki://`, `private.pkcs8://`' => [random_bytes(16), Rsa::fromSpki(substr($pub1, 14)), Rsa::fromPkcs8(substr($pri2, 16))],
'plaintext, `public.pkcs1://`, `private.pkcs1://`' => [random_bytes(24), Rsa::fromPkcs1(substr($pub2, 15), Rsa::KEY_TYPE_PUBLIC), Rsa::fromPkcs1(substr($pri1, 16))],
'plaintext, `public.pkcs1://`, `private.pkcs8://`' => [random_bytes(32), Rsa::fromPkcs1(substr($pub2, 15), Rsa::KEY_TYPE_PUBLIC), Rsa::fromPkcs8(substr($pri2, 16))],
'plaintext, `pkcs#1 pubkey content`, `private.pkcs1://`' => [random_bytes(40), Rsa::from($pub7, Rsa::KEY_TYPE_PUBLIC), Rsa::fromPkcs1(substr($pri1, 16))],
'plaintext, `pkcs#1 pubkey content`, `private.pkcs8://`' => [random_bytes(48), Rsa::from($pub7, Rsa::KEY_TYPE_PUBLIC), Rsa::fromPkcs8(substr($pri2, 16))],
'txt, `SPKI file://pubkey`, [`file://`,``] privateKey' => [random_bytes(64), $pub3, [$pri3, '']],
'txt, `SPKI pubkey content`, [`contents`,``] privateKey' => [random_bytes(72), $pub5, [$pri5, '']],
'str, `SPKI file://pubkey`, [`file://`privateKey, pwd]' => [random_bytes(64), $pub3, $encryptedKey1],
'str, `SPKI pubkey content`, [`encrypted contents`,pwd]' => [random_bytes(72), $pub5, $encryptedKey2],
];
foreach ([$pub3, $pub4, $pub5, $pub6, $crt1, $crt2, $crt3] as $pubIndex => $pub) {
foreach ([$pri1, $pri2, $pri3, $pri4, $pri5, $pri6, $pri7, $pri8, $pri9, $pri0] as $priIndex => $pri) {
$keys["plaintext, publicKey{$pubIndex}, privateKey{$priIndex}"] = [random_bytes(56), Rsa::from($pub, Rsa::KEY_TYPE_PUBLIC), Rsa::from($pri, Rsa::KEY_TYPE_PRIVATE)];
}
}
return $keys;
}
/**
* @dataProvider keysProvider
* @param string $plaintext
* @param object|resource|mixed $publicKey
*/
public function testEncrypt(string $plaintext, $publicKey)
{
$ciphertext = Rsa::encrypt($plaintext, $publicKey);
self::assertIsString($ciphertext);
self::assertNotEquals($plaintext, $ciphertext);
if (method_exists($this, 'assertMatchesRegularExpression')) {
$this->assertMatchesRegularExpression(self::BASE64_EXPRESSION, $ciphertext);
} else {
self::assertRegExp(self::BASE64_EXPRESSION, $ciphertext);
}
}
/**
* @dataProvider keysProvider
* @param string $plaintext
* @param object|resource|mixed $publicKey
* @param object|resource|mixed $privateKey
*/
public function testDecrypt(string $plaintext, $publicKey, $privateKey)
{
$ciphertext = Rsa::encrypt($plaintext, $publicKey);
self::assertIsString($ciphertext);
self::assertNotEquals($plaintext, $ciphertext);
if (method_exists($this, 'assertMatchesRegularExpression')) {
$this->assertMatchesRegularExpression(self::BASE64_EXPRESSION, $ciphertext);
} else {
self::assertRegExp(self::BASE64_EXPRESSION, $ciphertext);
}
$mytext = Rsa::decrypt($ciphertext, $privateKey);
self::assertIsString($mytext);
self::assertEquals($plaintext, $mytext);
}
/**
* @return array<string,array{string,array{\OpenSSLAsymmetricKey|resource|mixed,int},array{\OpenSSLAsymmetricKey|resource|mixed,int},?class-string<\UnexpectedValueException>}>
*/
public function crossPaddingPhrasesProvider(): array
{
list(, , , , , , , $privateKeys, , , , , , $publicKeys) = array_values($this->keyPhrasesDataProvider());
$privateKey = $privateKeys[0];
$publicKey = $publicKeys[0];
return [
'encrypted as OPENSSL_PKCS1_OAEP_PADDING, and decrpted as OPENSSL_PKCS1_PADDING' => [
random_bytes(32), [$publicKey, OPENSSL_PKCS1_OAEP_PADDING], [$privateKey, OPENSSL_PKCS1_PADDING], UnexpectedValueException::class
],
'encrypted as OPENSSL_PKCS1_PADDING, and decrpted as OPENSSL_PKCS1_OAEP_PADDING' => [
random_bytes(32), [$publicKey, OPENSSL_PKCS1_PADDING], [$privateKey, OPENSSL_PKCS1_OAEP_PADDING], UnexpectedValueException::class
],
'encrypted as OPENSSL_PKCS1_OAEP_PADDING, and decrpted as OPENSSL_PKCS1_OAEP_PADDING' => [
random_bytes(32), [$publicKey, OPENSSL_PKCS1_OAEP_PADDING], [$privateKey, OPENSSL_PKCS1_OAEP_PADDING], null
],
'encrypted as OPENSSL_PKCS1_PADDING, and decrpted as OPENSSL_PKCS1_PADDING' => [
random_bytes(32), [$publicKey, OPENSSL_PKCS1_PADDING], [$privateKey, OPENSSL_PKCS1_PADDING], null
],
];
}
/**
* @dataProvider crossPaddingPhrasesProvider
* @param string $plaintext
* @param array{\OpenSSLAsymmetricKey|resource|mixed,int} $publicKeyAndPaddingMode
* @param array{\OpenSSLAsymmetricKey|resource|mixed,int} $privateKeyAndPaddingMode
* @param ?class-string<\UnexpectedValueException> $exception
*/
public function testCrossEncryptDecryptWithDifferentPadding(
string $plaintext, array $publicKeyAndPaddingMode, array $privateKeyAndPaddingMode, $exception = null
) {
if ($exception) {
$this->expectException($exception);
}
$ciphertext = Rsa::encrypt($plaintext, ...$publicKeyAndPaddingMode);
$decrypted = Rsa::decrypt($ciphertext, ...$privateKeyAndPaddingMode);
if ($exception === null) {
self::assertNotEmpty($ciphertext);
self::assertNotEmpty($decrypted);
self::assertEquals($plaintext, $decrypted);
}
}
/**
* @dataProvider keysProvider
* @param string $plaintext
* @param object|resource|mixed $publicKey
* @param object|resource|mixed $privateKey
*/
public function testSign(string $plaintext, $publicKey, $privateKey)
{
$signature = Rsa::sign($plaintext, $privateKey);
self::assertIsString($signature);
self::assertNotEquals($plaintext, $signature);
if (method_exists($this, 'assertMatchesRegularExpression')) {
$this->assertMatchesRegularExpression(self::BASE64_EXPRESSION, $signature);
} else {
self::assertRegExp(self::BASE64_EXPRESSION, $signature);
}
}
/**
* @dataProvider keysProvider
* @param string $plaintext
* @param object|resource|mixed $publicKey
* @param object|resource|mixed $privateKey
*/
public function testVerify(string $plaintext, $publicKey, $privateKey)
{
$signature = Rsa::sign($plaintext, $privateKey);
self::assertIsString($signature);
self::assertNotEquals($plaintext, $signature);
if (method_exists($this, 'assertMatchesRegularExpression')) {
$this->assertMatchesRegularExpression(self::BASE64_EXPRESSION, $signature);
} else {
self::assertRegExp(self::BASE64_EXPRESSION, $signature);
}
self::assertTrue(Rsa::verify($plaintext, $signature, $publicKey));
}
}