AES Algorithm in Hindi | Advanced Encryption Standard Algorithm in Cryptography & Network Security 

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The Advanced Encryption Standard (AES) algorithm is a widely used symmetric key encryption algorithm that plays a significant role in modern cryptography and network security. AES is also known as Rijndael, named after its inventors Joan Daemen and Vincent Rijmen. It is used to securely encrypt and decrypt data to ensure confidentiality and integrity during transmission and storage. Let's understand the basics of the AES algorithm: Symmetric Key Encryption: AES is a symmetric key encryption algorithm, meaning the same key is used for both encryption and decryption. This key must be kept secret between the communicating parties to maintain the confidentiality of the data. Key Sizes: AES supports three key sizes: 128 bits, 192 bits, and 256 bits. These key sizes determine the number of rounds used in the encryption process and correspondingly the level of security. Encryption Process: The AES encryption process involves the following steps: Key Expansion: The initial secret key is expanded to create a set of round keys. The number of rounds depends on the key size: 10 rounds for a 128-bit key, 12 rounds for a 192-bit key, and 14 rounds for a 256-bit key. Initial Round: The input data, known as plaintext, is divided into blocks of 128 bits (16 bytes). In the first round, each byte of the plaintext is combined with the corresponding byte of the round key using a bitwise XOR operation. Main Rounds: AES performs multiple rounds (determined by the key size) where four different transformations are applied: SubBytes, ShiftRows, MixColumns, and AddRoundKey. SubBytes: Each byte of the block is replaced by another byte based on a substitution table (S-box). ShiftRows: The rows of the block are cyclically shifted to the left. MixColumns: The columns of the block are mixed to add diffusion. AddRoundKey: Each byte of the block is combined with the corresponding byte of the round key using a bitwise XOR operation. Final Round: The final round does not include the MixColumns transformation. Decryption Process: The decryption process in AES is the reverse of the encryption process. It involves the same steps as encryption, but the transformations are applied in reverse order. Security and Performance: AES is considered secure and has been extensively analyzed and tested. Its security is based on the strength of the encryption key, and the choice of a strong key size (e.g., 256 bits) enhances its resistance against brute-force attacks. AES is also known for its efficiency and performance. It is optimized for both software and hardware implementations, making it suitable for a wide range of applications, including data encryption in computer systems, secure communication in networks, and data storage in cloud environments. In conclusion, the Advanced Encryption Standard (AES) is a fundamental encryption algorithm widely used in modern cryptography and network security. Its simplicity, security, and efficiency make it a popular choice for protecting sensitive information and ensuring secure communication between parties.

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Really great tutorial, worth watching it. Thank you so much😊

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Very simple and understandable explanation.Great

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Excellent explanation. Really helped me to prepare for my exams. Thank you.

Thanks for explaining the AES Encryption.

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Very well explained better than my tutor. Thanks for the video

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Absolute Legend ❤

Superb. In last step add round keys when there is xor operation with keys, generated through key expansion, w0 to w3 is uused in pew transformation, sop in last steps keys used will be from w3 to w7 and in next round w8 to w11, just confirming as keys written is shown from w1 to w4

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Allah apko bht khush rakhe awr ap ko kamiyaab kare zindagi mein agy. Ameen suma Ameen.

Tq bro .this video will be useful for my project

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bhaiyya bacha liya aapne thank uu sooooooooo much

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Book mai 1hr takk samaj nahi aya laga chor hi du yai topic but iss video mai 20 minute mai hi almost sab clear hogaya doubts . Aur baut easy laga

just wonderful explanation