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https://github.com/randika00/aes-encryption-decryption
Encryption and Decryption using AES (Advanced Encryption Standards)
https://github.com/randika00/aes-encryption-decryption
aes aes-encryption cryptography decryption encryption
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Encryption and Decryption using AES (Advanced Encryption Standards)
- Host: GitHub
- URL: https://github.com/randika00/aes-encryption-decryption
- Owner: Randika00
- License: mit
- Created: 2024-01-05T09:39:55.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2024-02-06T08:24:07.000Z (10 months ago)
- Last Synced: 2024-02-06T09:32:23.880Z (10 months ago)
- Topics: aes, aes-encryption, cryptography, decryption, encryption
- Language: PowerShell
- Homepage:
- Size: 582 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
## AES-Encryption-Decryption
The Advanced Encryption Standard (AES)
An algorithm that uses the same key to encrypt and decrypt protected data. Instead of a single round of encryption, data is put through
several rounds of substitution, transposition, and mixing to make it harder to compromise.That means it takes 128 bits as input and outputs
128 bits of encrypted cipher text as output. AES relies on substitution-permutation network principle which means it is performed using a
series of linked operations which involves replacing and shuffling of the input data.
The number of rounds depends on the key length as follows :
* 128 bit key – 10 rounds
* 192 bit key – 12 rounds
* 256 bit key – 14 rounds
Encryption - AES considers each block as a 16 byte (4 byte x 4 byte = 128 ) grid in a column major arrangement.
[ b0 | b1 | b2 | b3 ] [ b0 | b1 | b2 | b3 ]
| b4 | b5 | b6 | b7 | -> | b5 | b6 | b7 | b4 |
| b8 | b9 | b10 | b11 | | b10 | b11 | b8 | b9 |
[ b12 | b13 | b14 | b15 ] [ b15 | b12 | b13 | b14 ]
Decryption is the process of converting an encrypted message back to its original (readable) format. The original message is
called the plaintext message. The encrypted message is called the ciphertext message.In decryption, the system extracts and
converts the garbled data and transforms it to texts and images that are easily understandable not only by the reader but also
by the system. Decryption may be accomplished manually or automatically. It may also be performed with a set of keys or passwords.
[](https://opensource.org/licenses/MIT)
