aes

问题 I am trying to write a python code which has same functionarities of AES_ENCRYPT and AES_DECRYPT of MySQL. https://dev.mysql.com/doc/refman/5.6/ja/encryption-functions.html I want to encrypt and decrypt data between MySQL and Python. For example, I want to decrypt data by python, which is encrypted by AES_ENCRYPT of MySQL. And I want to decrypt data by AES_DECRYPT of MySQL, which is encrypted by Python vice versa. I found a example of AES_ENCRYPT in Python. https://www.maykinmedia.nl/blog

问题 here i want to encrypt and decrypt files using AES 256 Algorithm than i have to provide Key for Encrypt the files and same key for decrypt the files. So which Key is better for good performance and Security also? Which type of Format of key i will use here so i can get more security. Here i have to use same key in Encrypt and Decrypt. So Any body please can suggest me the better suggestions for Key. 回答1: An AES key is just a bunch of bits with no structure. An AES-128 key is 128 bits, which

问题 Recently I finally (with help of stackoverflow's user, @WhozCraig) got to work AES in CBC mode. Now, I would like to do exact same thing but with AES IGE. I took a look at openssl-1.0.1e/test/igetest.c and tried to build my own test. But once again, I have a problem with inputs and outputs proper sizes. Everything else is good, because I copied it from my previous code: AES (aes-cbc-128, aes-cbc-192, aes-cbc-256) encryption/decryption with openssl C. Now, when I pass an inputs length which is

问题 I have a single-threaded client/server application that needs to do both encryption and decryption of their network communication. I plan on using OpenSSL's EVP API and AES-256-CBC. Some sample pseudo-code I found from a few examples: // key is 256 bits (32 bytes) when using EVP_aes_256_*() // I think iv is the same size as the block size, 128 bits (16 bytes)...is it? 1: EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new(); 2: EVP_CipherInit_ex(ctx, EVP_aes_256_cbc(), NULL, key, iv, 1); //0=decrypt, 1

问题 This question already has answers here : Converting Secret Key into a String and Vice Versa (6 answers) Closed 3 years ago . I am implementing AES algorithm in java.I am converting SecretKey to String and passing to server.java through sockets. In server.java, I am converting this string back to SecretKey.However, I am getting the error mentioned below. I have tried all possible solutions but nothing worked for me. In client.java, I am converting secKey to String String encodedKey = Base64

问题 I have created an application for Android in Java and used Cipher class to encrypt data with AES. Now I wanna take that algorithm into iOS with CommonCrypto class. The code works but has different results. This is the code in Java : public static String Decrypt(String text, String key) throws Exception { Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); byte[] keyBytes = new byte[16]; byte[] b = key.getBytes("UTF-8"); int len = b.length; if (len > keyBytes.length) len = keyBytes

问题 I'm trying to convert this C# code to Python (2.5, GAE). The problem is that the encrypted string from the python script is different each time the encryption (on the same string) is run. string Encrypt(string textToEncrypt, string passphrase) { RijndaelManaged rijndaelCipher = new RijndaelManaged(); rijndaelCipher.Mode = CipherMode.CBC; rijndaelCipher.Padding = PaddingMode.PKCS7; rijndaelCipher.KeySize = 128; rijndaelCipher.BlockSize = 128; byte[] pwdBytes = Encoding.UTF8.GetBytes(passphrase

问题 I'm trying to convert this C# code to Python (2.5, GAE). The problem is that the encrypted string from the python script is different each time the encryption (on the same string) is run. string Encrypt(string textToEncrypt, string passphrase) { RijndaelManaged rijndaelCipher = new RijndaelManaged(); rijndaelCipher.Mode = CipherMode.CBC; rijndaelCipher.Padding = PaddingMode.PKCS7; rijndaelCipher.KeySize = 128; rijndaelCipher.BlockSize = 128; byte[] pwdBytes = Encoding.UTF8.GetBytes(passphrase

问题 I'm trying to convert this C# code to Python (2.5, GAE). The problem is that the encrypted string from the python script is different each time the encryption (on the same string) is run. string Encrypt(string textToEncrypt, string passphrase) { RijndaelManaged rijndaelCipher = new RijndaelManaged(); rijndaelCipher.Mode = CipherMode.CBC; rijndaelCipher.Padding = PaddingMode.PKCS7; rijndaelCipher.KeySize = 128; rijndaelCipher.BlockSize = 128; byte[] pwdBytes = Encoding.UTF8.GetBytes(passphrase

问题 Im trying to implement file decryption by referring this code: Encryption part i have done this way: https//stackoverflow.com/questions/64423926/encrypt-file-in-java-and-decrypt-in-openssl-with-key-aes And the encrypted file im able to decrypt with openssl. But the decrypt to file in java is causing error: java.lang.IllegalArgumentException: Illegal base64 character 5f at java.util.Base64$Decoder.decode0(Unknown Source) at java.util.Base64$Decoder.decode(Unknown Source) at java.util.Base64