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  2. AES implementations - Wikipedia

    en.wikipedia.org/wiki/AES_implementations

    The authors of Rijndael used to provide a homepage [2] for the algorithm. Care should be taken when implementing AES in software, in particular around side-channel attacks. The algorithm operates on plaintext blocks of 16 bytes. Encryption of shorter blocks is possible only by padding the source bytes, usually with null bytes. This can be ...

  3. AES instruction set - Wikipedia

    en.wikipedia.org/wiki/AES_instruction_set

    AES-NI (or the Intel Advanced Encryption Standard New Instructions; AES-NI) was the first major implementation. AES-NI is an extension to the x86 instruction set architecture for microprocessors from Intel and AMD proposed by Intel in March 2008. [2] A wider version of AES-NI, AVX-512 Vector AES instructions (VAES), is found in AVX-512. [3]

  4. Advanced Encryption Standard - Wikipedia

    en.wikipedia.org/wiki/Advanced_Encryption_Standard

    The algorithm described by AES is a symmetric-key algorithm, meaning the same key is used for both encrypting and decrypting the data. In the United States, AES was announced by the NIST as U.S. FIPS PUB 197 (FIPS 197) on November 26, 2001. [6]

  5. Comparison of cryptography libraries - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_cryptography...

    Comparison of implementations of message authentication code (MAC) algorithms. A MAC is a short piece of information used to authenticate a message—in other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed in transit (its integrity).

  6. Rijndael S-box - Wikipedia

    en.wikipedia.org/wiki/Rijndael_S-box

    The Rijndael S-box is a substitution box (lookup table) used in the Rijndael cipher, on which the Advanced Encryption Standard (AES) cryptographic algorithm is based. [1]

  7. RC5 - Wikipedia

    en.wikipedia.org/wiki/RC5

    The key expansion algorithm is illustrated below, first in pseudocode, then example C code copied directly from the reference paper's appendix. Following the naming scheme of the paper, the following variable names are used: w – The length of a word in bits, typically 16, 32 or 64. Encryption is done in 2-word blocks.

  8. CCM mode - Wikipedia

    en.wikipedia.org/wiki/CCM_mode

    CCM requires two block cipher encryption operations on each block of an encrypted-and-authenticated message, and one encryption on each block of associated authenticated data. According to Crypto++ benchmarks, AES CCM requires 28.6 cycles per byte on an Intel Core 2 processor in 32-bit mode. [6] Notable inefficiencies:

  9. Key derivation function - Wikipedia

    en.wikipedia.org/wiki/Key_derivation_function

    Example of a Key Derivation Function chain as used in the Signal Protocol.The output of one KDF function is the input to the next KDF function in the chain. In cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudorandom function (which typically uses a ...