我正在尝试对我发送给S3的数据进行客户端加密。我想将加密密钥作为用户的输入。我应该以什么格式从用户那里获取密钥。
我尝试将输入作为ssh-keygen生成的私钥,并尝试使用Get public key from private in Java中提到的代码读取它。但是我收到以下错误
Exception in thread "main" java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException : algid parse error, not a sequence
at sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:217)
at java.security.KeyFactory.generatePrivate(KeyFactory.java:372)
我使用ssh-keygen -t rsa
生成密钥答案 0 :(得分:0)
I want to take encryption keys as input from the user
我没有尝试您的上述需求,但我已经生成了256位密钥来加密和解密我在S3中的数据。
// Code To Generate Secret Key.
KeyGenerator symKeyGenerator = KeyGenerator.getInstance("AES");
symKeyGenerator.init(256);
SecretKey symKey = symKeyGenerator.generateKey();
System.out.println(new String(Base64.encodeBase64(symKey.getEncoded())));
我这样用来下载和上传S3中的对象
// Code To Make Objects Encrypt while uploading and Decrypt while Downloading.
public static void s3WithEncryption(AWSCredentials credentials) {
String myKeyPair = "KEY_GENERATED_USING_ABOVE_CODE";
SecretKey mySymmetricKey = new SecretKeySpec(Base64.decodeBase64(myKeyPair.getBytes()), "AES");
EncryptionMaterials materials = new EncryptionMaterials(mySymmetricKey);
AmazonS3Client encryptedS3 = new AmazonS3EncryptionClient(credentials, materials);
try {
File file = new File("D:/dummy.txt");
SSECustomerKey sseKey = new SSECustomerKey(myKeyPair);
PutObjectRequest objectRequest = new PutObjectRequest(bucketName, "withEncrypt/dummy.txt", file);
encryptedS3.putObject(objectRequest.withSSECustomerKey(sseKey));
System.out.println("s3WithEncryption: Object uploaded!!!");
S3Object downloadedObject = encryptedS3.getObject(new GetObjectRequest(bucketName, "withEncrypt/" + file.getName()).withSSECustomerKey(sseKey));
downloadFile("D:/withEncrption", downloadedObject.getObjectContent(), "Steps to configure unifiedUI.txt");
System.out.println("s3WithEncryption: Object Downloaded!!!");
} catch (Exception e) {
e.printStackTrace();
} finally {
encryptedS3.shutdown();
}
}