RC5

RC5

RC5 is a block cipher encryption technique developed by Ronald Rivest in 1995. It is a fast and simple encryption method that allows users to adjust block sizes, key length, and the number of rounds to meet their desired security goals. RC5 is a basic block cipher used in cryptography.From: Digital Rights Management [2019], Secured Model for Internet of Things (IoT) to Monitor Smart Field Data with Integrated Real-Time Cloud Using Lightweight Cryptography [2021], Protocols for Secure Electronic Commerce [2019]

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Published in Mário Marques da Silva, Cable and Wireless Networks, 2018

Mário Marques da Silva

The Blowfish algorithm is another symmetric cryptographic algorithm. It presents a 64-bit block size, with a variable key of length up to 448 bits, being easy to implement by software. The Blowfish algorithm was developed as an alternative to DES. Nevertheless, its encryption capabilities are much below those of the AES. Finally, the RC5 is a very attractive cryptographic algorithm because of its simplicity. Initially developed by Ronald Rivest, the RC5 corresponds to an update of the previous RC4 version. Note that the acronym RC (in RC5) stands for River Cipher. The RC5 has a variable block size of 32, 64, or 128 bits, whereas the key length is fixed to 255 bits. The RC5 is currently used as session (symmetric) key by combined protocols such as SSL or TLS.

Secured Model for Internet of Things (IoT) to Monitor Smart Field Data with Integrated Real-Time Cloud Using Lightweight Cryptography

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Published in IETE Journal of Research, 2021

Y. Justindhas, P. Jeyanthi

RC5 is a basic block cipher in cryptography. Ron Rivest developed it and examined by RSA Laboratories. A unique benefit from RC5 is the high use of data dependent rotations. RC5 has a variable word size, a round and a hidden variable length key. RC5 has three operations: XOR, addition and rotations. Rotation is continuous and variable rotation was n't linear for most processors. Rotation depends on the key as well as the data. RSA Laboratory has been analyzing it with a 64-bit block for some time. The numbers look really good after five rounds.

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Secured Model for Internet of Things (IoT) to Monitor Smart Field Data with Integrated Real-Time Cloud Using Lightweight Cryptography