在信封式Cms中使用aes256gcm算法对文件进行加密/解密的问题什么是我的选择？

问题描述

我正在尝试部分成功地使用c＃从Java复制示例

    CMSEnvelopedDataStreamGenerator gen = new CMSEnvelopedDataStreamGenerator();

    // NOTE: Uses the RECEIVER's PUBLIC encryption key
    gen.addRecipientInfoGenerator(new JceKeyTransRecipientInfoGenerator(remoteEncryptionCert,rsaesOaepIdentifier()));

    OutputEncryptor encryptor = new JceCMSContentEncryptorBuilder(CMSAlgorithm.AES256_GCM).setProvider(BC).build();

    try (FileOutputStream fileStream = new FileOutputStream(OUTPUT_FILE); OutputStream encryptingOutputStream = gen.open(fileStream,encryptor)) {
                
                //
                // write file
                //
 
                encryptingOutputStream.flush();
            }

到目前为止，我已经尝试过

使用System.Security.Cryptography.Pkcs

public byte[] Encrypt(byte[] plainBytes,X509Certificate2 recipientCert)
{
    // create ContentInfo
    ContentInfo plainContent = new ContentInfo(plainBytes);

    // EnvelopedCms represents encrypted data
    Oid encryptAlgoOid = new Oid("2.16.840.1.101.3.4.1.46"); // AES-256-GCM,//Oid encryptAlgoOid = new Oid("2.16.840.1.101.3.4.1.42"); // AES-256-CBC
    EnvelopedCms encryptedData = new EnvelopedCms(plainContent,new AlgorithmIdentifier(encryptAlgoOid));

    // add a recipient
    CmsRecipient recipient = new CmsRecipient(recipientCert);

    // encrypt data with public key of recipient
    encryptedData.Encrypt(recipient); //Throws "Unknown cryptographic algorithm."

    // create PKCS #7 byte array
    byte[] encryptedBytes = encryptedData.Encode();

    // return encrypted data
    return encryptedBytes;
}

错误堆栈跟踪

Unknown cryptographic algorithm.
   at Internal.Cryptography.Pal.Windows.PkcsPalWindows.EncodeHelpers.CreateCryptMsgHandleToEncode(CmsRecipientCollection recipients,Oid innerContentType,AlgorithmIdentifier contentEncryptionAlgorithm,X509Certificate2Collection originatorCerts,CryptographicAttributeObjectCollection unprotectedAttributes)
   at Internal.Cryptography.Pal.Windows.PkcsPalWindows.Encrypt(CmsRecipientCollection recipients,ContentInfo contentInfo,CryptographicAttributeObjectCollection unprotectedAttributes)
   at System.Security.Cryptography.Pkcs.EnvelopedCms.Encrypt(CmsRecipientCollection recipients)
   at System.Security.Cryptography.Pkcs.EnvelopedCms.Encrypt(CmsRecipient recipient)
   at ConsoleApp1.Program.Encrypt() in Program.cs:line 91

使用Org.BouncyCastle.Cms

public byte[] Encrypt(X509Certificate2 recipientCert)
{
    // file stream
    FileStream fileEncrypted = new FileStream(pathToFile)

    CmsEnvelopedDataStreamGenerator gen = new CmsEnvelopedDataStreamGenerator();
    gen.AddKeyTransRecipient(recipientCert);

    var outEncryptedStream = gen.Open(fileEncrypted,"2.16.840.1.101.3.4.1.46"); 
    // Throws "KeyGenerator 2.16.840.1.101.3.4.1.46 not recognised." CmsEnvelopedDataGenerator doesn't 
    // have named constant for aes256gcm 

    return outEncryptedStream
}

错误堆栈跟踪

KeyGenerator 2.16.840.1.101.3.4.1.46 not recognised.
   at Org.BouncyCastle.Security.GeneratorUtilities.GetKeyGenerator(String algorithm)
   at Org.BouncyCastle.Cms.CmsEnvelopedDataStreamGenerator.Open(Stream outStream,String encryptionOid)
   at ConsoleApp1.Program.Encrypt() in Program.cs:line 128

我必须使其以某种方式工作，以便我可以使用c＃代码加密文件并使用java解密，反之亦然。

我注意到，如果我使用Aes256CBC在C＃中加密文件，我可以在Java中对其进行解密，那怎么可能？这是否意味着我实施的加密错误？

那么，什么可以使这项工作可行？

解决方法

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