无法解密在 Java 中加密的消息
Can't decrypt message encrypted in Java
我想共享来自服务器(c++)和客户端(Java)的数据。为了安全起见,我们使用RSA密钥(1024位,65537指数)
我生成的密钥对是这样的(C++/OpenSSL):
RSA *keyPair = RSA_generate_key(RSA_BITS, RSA_EXPONENT, NULL, NULL);
BIO* privateKey = BIO_new(BIO_s_mem());
BIO* publicKey = BIO_new(BIO_s_mem());
PEM_write_bio_RSAPrivateKey(privateKey, keyPair, NULL, NULL, 0, NULL, NULL);
PEM_write_bio_RSA_PUBKEY(publicKey, keyPair);
我的服务器向我的客户端发送公钥:
客户端加密数据如下(Java):
Cipher m_cipher = Cipher.getInstance("RSA");
m_cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] result = m_cipher.doFinal(dataNeedToCrypt);
现在我收到我的消息,我试着像这样解密(C++/OpenSSL):
BIO* privateKey = StringtoBio(m_privateKey);
RSA* rsa = PEM_read_bio_RSAPrivateKey(privateKey, NULL, NULL, NULL);
char dataDecryptedBuffer[RSA_size(rsa)];
int result = RSA_private_decrypt(RSA_size(rsa), (uchar*)data.data(), (uchar*)&dataDecryptedBuffer, rsa, RSA_PKCS1_PADDING);
if(result == -1)
CONSOLE_ERROR << "Can't decrypt error code : " << std::hex << ERR_get_error();
QByteArray dataDecrypted(dataDecryptedBuffer);
BIO_free_all(privateKey);
RSA_free(rsa);
return dataDecrypted;
我得到一个错误0x407109F,它似乎填充是错误的:
$ openssl errstr 0x407109F
error:0407109F:rsa routines:RSA_padding_check_PKCS1_type_2:pkcs decoding error
在java密码中,"RSA"是"RSA/ECB/PKCS1Padding",所以填充应该很好。
但我无法解密我的消息!
怎么了?
基于解密方式:
int result = RSA_public_decrypt(RSA_size(rsa), (uchar*)data.data(), (uchar*)&dataDecryptedBuffer, rsa, RSA_PKCS1_PADDING);
if(result == -1)
CONSOLE_ERROR << "Can't decrypt error code : " << std::hex << ERR_get_error();
QByteArray dataDecrypted(dataDecryptedBuffer);
我猜你是在假设密文中没有NULL
或