File Encryption with the Java Cryptography Architecture
$60-80 AUD
Paid on delivery
Your mission, should you choose to accept it - and you don't really have a lot of choice - is to complete the program by filling in the missing code which instantiates objects of the right classes and then calls the appropriate method calls. I created the skeleton by taking the completed, working version, and deleting code while leaving the explanatory comments - but I've been reasonably careful to replace multi-line function calls and blocks of code with the same number of blank lines (there's usually a blank line below the excised code). So if you see a two-line gap, you can reasonably assume that one line of code will provide the missing functionality - and if you think a single line of code will fill a 15-line gap, you should wonder whether you're missing something.
Along the way, you will need to refer to the online documentation for the Java Cryptography Architecture, which you will find at [login to view URL] . The JavaDoc for the various [login to view URL] classes are at [login to view URL] while [login to view URL] JavaDoc is at [login to view URL]
You may also need to refer to the Standard Algorithm Names at [login to view URL] and the Oracle Providers documentation at [login to view URL] .
Anything else can be found under the main Security Documentation at [login to view URL] .
These all questions should be answered :
Please attach your Java source code file, [login to view URL], along with a text file called Assignment [login to view URL] containing the answers to the following questions:
1. For version 1 of the program, operating in ECB mode:
a) What did you notice about the ciphertext, and why do you think that was?
b) What did you notice about the size of the generated ciphertext files. Why was this?
2. For version 2 of the program, operating in CBC mode with default IV:
a) What did you notice about the size of the generated ciphertext files?
b) How is the initialization vector being passed between encryption and decryption?
c) Is this particularly secure?
3. For version 3 of the program, operating in CBC mode with a random IV:
a) What did you notice about the size of the generated ciphertext files?
Project ID: #22061901
About the project
13 freelancers are bidding on average $118 for this job
Hello Sir, I am expert java developer with 9 years of experience in java development.I have expertise in encryption and cryptography. I worked on various this kind of assignment for many University across the world. As More
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Hi Sir, I have huge experience in Java development and i am expert in Cryptography and encryption. As i reviewed your attached skeleton code and job requirement details it's looking good to me and i will complete it as More
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I have completed a similar assignment for my MS network Security course. I can complete this accurately for you
I have read your project and I am expert in this field. I can do this for you within due time and honestly. I also have a few questions to discuss. Kindly contact me and we will discuss time and budget. Thanks
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