小编Asi*_*kht的帖子

我已经使用php,javascript和android应用程序使用库实现了RSA加密:

1. php侧的phpseclib

2. pidcrypt for javascript

3. bouncrycastle版本(bcprov-jdk14-151)用于anrdroid serviceprovider

我有我的加密机制,如:

user->request->publickey
     ->server->generate(publickey,privatekey) and save private key into Database
     ->server->sendpublickey->user
     ->user->encryptdata->send->server->decrypt

但是这种机制在javascript和php加密和解密之间工作正常,但在服务器发送公钥时在android平台上.它无法解密公钥.

现在我为此测试了不同的场景

PHP KeyGenerating

$rsa = new Crypt_RSA();
$rsa->setEncryptionMode(CRYPT_RSA_ENCRYPTION_PKCS1);
$rsa->setPrivateKeyFormat(CRYPT_RSA_PRIVATE_FORMAT_PKCS1);
$rsa->setPublicKeyFormat(CRYPT_RSA_PUBLIC_FORMAT_PKCS1);
define('CRYPT_RSA_EXPONENT', 65537);
extract($rsa->createKey(1024));

PHP DecryptingCode

$rsa = new Crypt_RSA();
$rsa->setEncryptionMode(CRYPT_RSA_ENCRYPTION_PKCS1);
$rsa->setPrivateKeyFormat(CRYPT_RSA_PRIVATE_FORMAT_PKCS1);
$rsa->loadKey($pri);
$binaryCiphertext=base64_decode($encrypted);
$strBase64DecryptedData=$rsa->decrypt($binaryCiphertext);
$plaintText = base64_decode($strBase64DecryptedData);

就像我的公钥一样.

-----BEGIN RSA PUBLIC KEY-----
MIGJAoGBALrBdN8F83hT2+pBsAwiNx+v3FWp51IdEElE8UvVhfZYmePbitpzLcJi
jZ4/tvRFXJGhqa3PKPUQkH2F4VrHruA2kNceiL/Btywc9oM+tDMeX1jcRKwXwK1k
KdccKwn0qywG6YxQuqWQIotOfV+IIuhcHdaHBl6CZ05/cBo6AlMlAgMBAAE=
-----END RSA PUBLIC KEY-----

1. 从服务器和服务器请求密钥生成公钥和私钥,并将公钥MODULUS和EXPONENT发送到Android应用程序并应用此代码:

   RSAPublicKeySpec rsaPublicKeySpec = new RSAPublicKeySpec(mod,exp);
   KeyFactory keyFactory = KeyFactory.getInstance("RSA","BS");
   PublicKey publicKey = keyFactory.generatePublic(rsaPublicKeySpec);
   Cipher cipher …

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