aes

My goal is to be able to, being given a file/folder and a password, encrypt and decrypt it in AES using Objective-C. I'm no crypto nerd or anything, but I chose AES because I found it was pretty standard and very secure. I am using a NSMutableData category which has methods for encrypting and decrypting it's data. Here it is: - (NSInteger)AES256EncryptionWithKey: (NSString*)key { // The key should be 32 bytes for AES256, will be null-padded otherwise char keyPtr[kCCKeySizeAES256 + 1]; // room for terminator (unused) bzero(keyPtr, sizeof(keyPtr)); // fill with zeroes (for padding) // Fetch key

I wish to encrypt a piece of data using AES (cbc) in java , I Want to use my own IV, which I have held in a byte array and my own key held in a byte array. How would I go about doing this? I'm searching for it to find tutorials on this topic. This is probably the best guide that I've found on the subject. It explains the basics, one concept at a time, in simple terms. Arshad shaik Formally it encrypts the string into unreadable format. Use same code to decrypt. ENCRYPT: String s1="arshad"; char[] s2=s1.toCharArray(); int s3= s2.length; System.out.println(s3); int i=0; // for(int j=0;j<s3;j++)

I need to encrypt/decrypt data with PHP. I am completely new to this, however I have read that Libsodium-PHP is the best tool for AES encryption. Much like the other PHP encryption libraries I have researched Libsoduim-PHP seemed to offer almost no documentation of how to use the library (that I was able to find). Can anyone that has experience with PHP encryption either point me in the direction of a good learning resource or write a few lines of sample code using Libsoduim-PHP? Thank you very much for the help, Atlas Much like the other PHP encryption libraries I have researched Libsoduim

I want to encrypt an arbitrary-length string with a password in Python. I would prefer not to deal with padding, key generation and IVs as I honestly don't know that much about cryptography yet and I'd like to avoid messing up. I'd also prefer using a well-known cypher as AES. My ideal library (let's call it MagicCrypt) would work like this: from MagicCrypt import AES p = "plaintext" k = "password" crypt = AES(k) c = crypt.encrypt(p) p == crypt.decrypt(c) # True I've checked PyCrypto , m2crypto , pycryptopp , GPGme and keyczar . Neither of them seem to offer this really easy to use mode.

This is the scenario we have: We have huge encrypted files, in the order of gigabytes that we can decrypt correctly if we read them until the end. The problem arises when we are reading and detect some flag in the file, then we stop reading and call reader.Close(), what happens is that a CryptographicException: "Padding is invalid and cannot be removed." is thrown. I have this small console app that reproduce this behavior, to test it just run it, it will create a file in your C:\ drive and then it will read line by line when pressing any key, and will stop when pressing 'q'. using System;

Is it possible to encrypt/decrypt data with AES without installing extra modules? I need to send/recieve data from C# , wich is encrypted with the System.Security.Cryptography reference. UPDATE I have tried to use PyAES, but that is too old. I updated some things to make that work, but it didn't. I've also can't install because it latest version is 3.3 while my version is 3.4 . The available Cryptographic Services available in the Standard Library are those . As you can see AES is not listed, but is suggest to use pycrypto which is an extra module . You just have to install it using pip , or