Need to store the username and password for an outside application inside of a windows forms vb.net app. For initial testing, I just set the settings type to "Text", but want more security. There are System.Security and Encryption types available, but not sure where to begin. Any suggestions on how to Add, Update, and Delete the values...
We developed a web service which is accessed by various platforms clients, for example it is requested by c++ and Java enabled clients. I want to use simple, effective encryption Algorithm which is easily decrypted by JAVA - C++ and JAVA script based clients. ...
In Java I have a ECDH public Key that I am sending as a byte array. Once I have received the byte array how can I turn it back into a public key? I am using Bouncy Castle but a Java solution would be just as useful. Thanks ...
I've read a few articles about cryptography in .net, which leads me to the following question, what is the difference between a keyed hash and a non-keyed hash? ...
I am writing a Java implementation of an app originally written in C. I can't modify the C version, and the Java version must share encrypted data with the C version. Here's the relevant part of the C encryption code: makekeys(password,&key1,&key2); /* turns password into two 8 byte arrays */ fill_iv(iv); /* bytes 8 bytes of randomness...
I'm trying to encrypt some binary data in Java with a public key as described on this useful page: http://www.junkheap.net/content/public_key_encryption_java As directed by the page, I created public and private keys using the commands: openssl genrsa -aes256 -out private.pem 2048 openssl rsa -in private.pem -pubout -outform DER -out p...
I'm not a cryptography expert, I actually only have a little bit of experience using it at all. Anyways, the time has come where one of my applications demands that I have some encryption set up. Please note, the program won't be managing anything super critical that will be able to cause a lot of damage. Anyways, I was just trying to...
Is there any difference between encrypting a file and encrypting the content of the file. If so, how to do the both. ...
How do I set the private key for encrypting messages when using ECDSA in OpenSSL programmatically? I have the following code: static int create_signature(unsigned char* hash) { EC_KEY *eckey=NULL; EC_GROUP *ecgroup=NULL; EVP_PKEY *evpkey=NULL; unsigned char *signature=NULL; point_conversion_form_t form = POINT_CONVERSION_UNCOM...
I'm writing my own captcha system for user registration. So I need to create a suitable URL for receiving generated captcha pictures. Generation looks like this: _cipher = cipher.new(settings.CAPTCHA_SECRET_KEY, cipher.MODE_ECB) _encrypt_block = lambda block: _cipher.encrypt(block + ' ' * (_cipher.block_size - len(block) % _cipher.block...
Can I set up an Oracle Database in a way that all of the following statements are true a) certain columns, potentially all columns are encrypted, so that direct file access to the database file wouldn't allow an attacker to retrieve any records b) the encrypted columns are transparently decrypted for authorized user, where authorizatio...
There are several ways to secure passwords with an automated encryption algorithm, but sometimes it's best to write it down on paper and keep the paper itself secured. Hackers can't easily get to paper. However, if someone finds that paper, they can see the passwords plainly. What's a non-automated method of securing information on a ...
The encryption worked properly. But now i am getting an error that says "RsaProtectedConfigurationProvider Bad Data" When checked, i came to know that we need to run the command: aspnet_regiis -pa "NetFrameworkConfigurationKey" "NT AUTHORITY\NETWORK SERVICE" My question is, if I run this command in my production environment, will it af...
When I decrypt something encrypted with this function, the decrypted version doesn't equal the original. class AES256encryption { var $secret = ''; var $cipher_key = ''; function AES256encryption($secret='') { if (empty($secret)) { global $secret; if (empty($secret)) { ...
Hi, I have a XML file on a server encrypted with the RC4 algorithm (http://rc4crypt.devhome.org) function encrypt ($pwd, $data, $ispwdHex = 0) { if ($ispwdHex) $pwd = @pack('H*', $pwd); // valid input, please! $key[] = ''; $box[] = ''; $cipher = ''; $pwd_length = strlen($pwd); ...
Hi all. Is there a built in method in Actionscript 3 that allows you to create a hash of a string. Like MD5 and SHA1. Thanks. ...
Hello guys, Please I need your help, Here is my encryption codes in PHP, it works fine but I don't know how to decrypt it in PHP. I need to get the actual value back. I have similar code in c# and I was able to get the same results. But I need to decrypt the value. <?php $DATA= 'james' ; $KEY= 'moveme'; $hash = hash_hmac("sha256", ...
Is there any encryption and decryption Algorithms that work for both php and c#? Please I need a sample codes ...
I decrypt data using PHP with this code: $content="1234"; $cp = mcrypt_module_open('rijndael-128', '', 'cbc', ''); $iv = mcrypt_create_iv(16, MCRYPT_RAND); $key = pack("H*",md5('a')); mcrypt_generic_init($cp, $key, $iv); $encrypted = mcrypt_generic($cp, $content); echo base64_encode($key)."\n"; echo base64_encode($iv)."\n"; echo base64_...
Hi' I'm learning C# (as a hobbyist) and am trying to figure how to write a simple encryption program. Converting characters from ASCII is fine, got that sorted, but it is the shift I am stuck on. If I want to code for (n + 3) for example, what line of thought should I be following? ...