1. 128 bit data encryption using Java stackoverflow.comI need to store some sensitive data by encrypting it with atleast 128 bit key. I investigated into javax.crypto package and found that there are certain Cipher names, like PBEWithMD5AndDES or ... 
2. Cracking a N bit RSA modulo numbers stackoverflow.comThis is related to my previous post, where my only option was to have a RSA algorithm which seemed relatively weak. Let us assume that I want to encode a ... 
3. Generating 128bit keys with keytool stackoverflow.comIs there a way to generate a 128bit key pair suitable for encryption using Sun's keytool program? It seems that the algorithms available in http://java.sun.com/javase/6/docs/technotes/guides/security/StandardNames.html#KeyPairGenerator are either not ... 
4. Java 256bit AES Encryption stackoverflow.comI need to implement 256 bit AES encryption, but all the examples I have found online use a "KeyGenerator" to generate a 256 bit key, but I would like to use ... 
5. What type of encryption to use for 48bit to 48bit? stackoverflow.comI've got a bunch of 48bit (6 byte) values that I need to encrypt symmetrically. The two requirements are:

6. 256bit AES/CBC/PKCS5Padding with Bouncy Castle stackoverflow.comI am having trouble mapping the following JDK JCE encryption code to Bouncy Castles Lightweight API:

7. Need library for the 3DES cipher that supports 1bit feedback cipher modes stackoverflow.comI couldn't find a java library that supports the CFB, OFB or CBC mode in the 1bit stream mode. So far, the libraries I've tried (BouncyCastle and IAIK) only support ranges 864. ... 
8. java.security.InvalidKeyException: Key length not 128/192/256 bits stackoverflow.comI am new to Java and was trying to use Hybrid cryptography using AES128 Symmetric encryption and then RSA1024 Asymmetric encryption on the generated symmetric key. Can someone help why I ... 
9. How to de/encrypt with Rijndael (AES) and a Blocksize of 256 bits? stackoverflow.comFor certain reasons i need to implement rijndael de/compression with a blocksize of 256 bits (reason: data is encrypted in php and php can do it...). How can i change the Blocksize ... 