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TripleSDES

The DES algorithm uses keys of length 56 bits, which, when DES was originally designed, was thought to be secure enough to meet most needs. However, the increase in computing power makes it more tractable to brute-force crack a 56-bit key. Thus, an alternative version of DES using longer keys was desirable. The result, known as Triple DES uses two 56-bit raw keys k1 and k2 and is implemented by composing DES with itself three times in the following way:

E3DES(p) = EDES(k1,DDES(k2,EDES(k1, p)))

Here, p is the plaintext to encrypt, EDES is the usual DES encryption algorithm and DDES is the DES decryption algorithm. This strategy doubles the number of bits in the key, at the expense of performing three times as many calculations. This approach was shown to offer only the security of a 57-bit key rather than 112 bits as you might expect.)

The TripleDES decryption algorithm is just the reverse:

D3DES(c) = DDES(k1,EDES(k2,DDES(k1, c)))

For this part of the project, implement a class called TripleSDES that provides the following methods and calculates the TripleSDES encryption.

public static byte[] Encrypt( byte[] rawkey1, byte[] rawkey2, byte[] plaintext )

public static byte[] Decrypt( byte[] rawkey1, byte[] rawkey2, byte[] ciphertext )

Kemahiran: Java

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Tentang Majikan:
( 2 ulasan ) Long Beach, United States

ID Projek: #13458967

23 pekerja bebas membida secara purata $238 untuk pekerjaan ini

Yknox

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dobreiiita

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7.3
TopTower22

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6.3
srinichal

I can deliver the code to.your requirements

$250 USD dalam 5 hari
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5.5
yassine008

Good day! I`m expert Java Dev with more than +7 years in It area. I have a success career in web/soft development using cutting edge Tech with latest frameworks in Java. Best Regards

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5.2
vorasiddh4it

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5.1
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4.6
hawkscodeaus

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XenialIT

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anish424

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arannyamonzur

Expert in encryption and decryption Algorithm and implement them in Java.I am experienced Java coder having 5 years of experience.I can definitely do this.

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anuragiitk

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freelancerkpis

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zhugguang103

Hello, I am an expert of protect & crack of apps. I have cracked&protected many apps and developed my own packer and unpacker, too. I have full knowledge and experiences with DES algorithm. I read your description v Lagi

$222 USD dalam 3 hari
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1.0
ritesh3067

I have very good knowledge of Triple DES algorithm. I already Have worked on same type of Triple DES project.

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ProgrammingM

A proposal has not yet been provided

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ferdoseashraf

I think there are pretty much examples over the net for this. Some of them are http://ttux.net/post/3des-java-encrypter-des-java-encryption/ https://gist.github.com/newhavengill/2573447 I can still help you with th Lagi

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rsat12345

create one interface and provide two method and implemets with class and use some condition looping concept.

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Injamul120221ku

Hello Sir, I am working on IT field since past 2 years. As i see your desire job is related on Advance Encryption Standard(AES). I worked on a thesis paper based on encryption and decryption. I can finish your job in 1 Lagi

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