encryption

问题 I have problem when I transform a byte[] to a string . I have used these ways so far: System.Text.Encoding.UTF8.GetString(byteArray); System.Text.Encoding.UTF8.GetString(byteArray); I use Rijndael in order to encrypt some parameters to send them in an API and I follow this Microsoft-Documentation. When I encrypt and decrypt as the documentation says everything works fine. In the documentation there is no need for conversion byte[] to a string . But in order to send it to the API I have to put

问题 I have problem when I transform a byte[] to a string . I have used these ways so far: System.Text.Encoding.UTF8.GetString(byteArray); System.Text.Encoding.UTF8.GetString(byteArray); I use Rijndael in order to encrypt some parameters to send them in an API and I follow this Microsoft-Documentation. When I encrypt and decrypt as the documentation says everything works fine. In the documentation there is no need for conversion byte[] to a string . But in order to send it to the API I have to put

问题 how to modify this AES encryption code so that it can encrypt and decrypt any type of file (pdf, docx....), because when I decrypt a pdf file or other I don't get the original file. public EncryptData(File originalFile, File encrypted, SecretKeySpec secretKey, String cipherAlgorithm) throws IOException, GeneralSecurityException{ this.cipher = Cipher.getInstance(cipherAlgorithm); encryptFile(getFileInBytes(originalFile), encrypted, secretKey); } public void encryptFile(byte[] input, File

问题 how to modify this AES encryption code so that it can encrypt and decrypt any type of file (pdf, docx....), because when I decrypt a pdf file or other I don't get the original file. public EncryptData(File originalFile, File encrypted, SecretKeySpec secretKey, String cipherAlgorithm) throws IOException, GeneralSecurityException{ this.cipher = Cipher.getInstance(cipherAlgorithm); encryptFile(getFileInBytes(originalFile), encrypted, secretKey); } public void encryptFile(byte[] input, File

问题 I am trying to encrypt a column in my prostrgres DB. The column name is "test" of type "bytea". My enity code is below, @ColumnTransformer(read = "pgp_sym_decrypt(" + " test, " + " current_setting('encrypt.key')" + ")", write = "pgp_sym_encrypt( " + " ?, " + " current_setting('encrypt.key')" + ") ") @Column(columnDefinition = "bytea") private String test; postgresql.conf configuration file: encrypt.key = 'Wow! So much security. Placed the postgresql.conf configuration file in src/main

问题 This bounty has ended . Answers to this question are eligible for a +100 reputation bounty. Bounty grace period ends in 13 hours . vijay053 wants to draw more attention to this question. We are porting an app from native Android/iOS to Flutter. We are using AES symmetric encryption in native apps and they are working fine with our device. Following is the flutter code where we have tried to replicate java implementation. Here we send client(app) public key and client nonce (random 16 bit) to

问题 We can secure the data while its travelling using spiped or stunnel . But How do we do that while the data at rest? What if someone took the whole database? How can we encrypt the persistent data storage? Do we need to do this in application layer? 回答1: When looking at the documentation at https://redis.io/topics/security it is clear that encryption of data at rest isn't supported: Redis is designed to be accessed by trusted clients inside trusted environments. This means that usually it is

问题 I have searched all this morning but I've found websites where it is said that data is sent through an asymmetric encryption using the TLS protocol Then I found the contrary Please can you tell me which is true? Thanks And does anyone know a guide where it is explained step by step the handshake of tls protocol over https? 回答1: The best answer is that it does both. TLS uses asymmetric encryption to first establish identity of one or both parties. Secondly, it uses asymmetric encryption to

问题 Let e = 'password' and I am transforming it to 'as9kio0736' in a CryptoStream. Let d = 'as9kio0736' and I am transforming it to 'password in a CryptoStream. When I am transforming d back to 'password' why is it not considered writing in a CryptoStream? using (MemoryStream msEncrypt = new MemoryStream()) { using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)) { using (StreamWriter swEncrypt = new StreamWriter(csEncrypt)) { swEncrypt.Write(plainText); }

问题 I am using the email/password sign in method for Firebase. I would like to encrypt the data users save into the realtime database before sending it to the database. Firebase already handle the user password, but can I somehow use it to encrypt data which can't be decrypted by me only the client? It would be nice if I could achieve it with the client sdk. So my flow would be something like this: User sign in with it's credentials (which is handled by firebase itself) User encrypt some data