Java prog#129. How to encrypt and decrypt data in Java Part 1

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Encrypting and Decrypting Java
Cryptography using Java in Netbeans IDE
Cryptography using Java in Netbeans IDE
Java Cryptography APIs
Encrypting and Decrypting a text file in java



  1. Hi,
    At NetBeans when i write
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    it gives me "org.bouncycastle.jce.provider does not exist"
    red line under org.
    what to do to fix it?
    Fix Imports does not fixed it.

  2. I used this tutorial to encrypt/decrypt data on android project, and it gives me error on code: Security.addProvider(new org.spongycastle.jce.provider.BouncyCastleProvider());
    So i commended this code and try if it works, and it works perfectly.
    So what is this line of code and is it needed? 

  3. hello  sir . I require encryption and decryption code using IDEA algorithm . I need to submit the code in college by tuesday. i.e. 7/10/2014 . Please help me 

  4. i have an encryption and decryption file witch is mutch more effective and dosent need java you only need to know how to type and its strong af longer text may be harder and longer to encrypt decrypt = instant

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