README

RSA

Generate Rsa keys

the available key lengths are 1024 and 2048

$ openssl genrsa -out rsa_private_key.pem 1024
$ openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem

Encrypt & Sign

• prepare keys

$pri = file_get_contents('keys/rsa_private_key.pem');
$pub = file_get_contents('keys/rsa_public_key.pem');

• encrypt

$rsa = new RSA();
$rsa->setPubKey($pub);
$encodedData = $rsa->encrypt("hello", RSA::OPENSSL_PKCS1_PADDING);

• decrypt

$rsa = new RSA();
$rsa->setPriKey($pri);
$sourceData = $rsa->decrypt($encodedData, RSA::OPENSSL_PKCS1_PADDING);

• sign

$rsa = new RSA();
$rsa->setPriKey($pri);
$signedData = $rsa->sign('hello',Rsa::OPENSSL_ALGO_SHA256);

• verify

$rsa = new RSA();
$rsa->setPubKey($pri);
$result = $rsa->verify('hello',$signedData,Rsa::OPENSSL_ALGO_SHA256);

Support Params

• Signature Algorithm Type

• Encryption Padding Type

Tips

• When OpenSSL is used "OPENSSL_NO_PADDING" to padding parameter, you need to manually fill in the original data

$str = str_pad("hello", 256); //128 or 256 
$rsa = new RSA();
$rsa->setPubKey($pub);
$encodedData = $rsa->encrypt($str, RSA::OPENSSL_NO_PADDING);

Other Encryption

$encryption= new Crypt(['cipher' => 'aes-256-cbc']);
$encode = $encryption->encrypt("hello", 'keyToMyHeart');
$decode = $encryption->decrypt($encode, 'keyToMyHeart');
var_dump([
    $encryption->getIv(),
    $encode,
    $decode
]);

$en = new Crypt(['cipher' => 'aes-256-cbc']); //des-ede3;
$iv = '0123456789abcdef';
//$iv = $en->makeIv();
$clientSecret = 'nuasndu89382j3d3d9238';

$encode = $en->encrypt("hello", $clientSecret, $iv);
$decode = $en->decrypt($encode, $clientSecret, $iv);

var_dump([
    $en->getIv(),
    $en->ivSize,
    $encode,
    $decode
]);