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a cryptographic hash function standardized by NIST as a new alternative to the SHA-2 hash function family.
SHA-3 Competition (2007-2012) was a competition initiated by NIST as a call for a new cryptographic hash algorithm for standardization purposes.
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part of the SHA-2 family of hash functions with a 512-bit output and a 256-bit security level.
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a threshold secret sharing scheme based on polynomial interpolation over a finite field.
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attacks using information leaked by implementations of cryptographic algorithms to obtain information about keys or (plaintext) data, instead of (or additional to) using cryptographic weaknesses.
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Algorithms and protocols for creating signatures to documents, and verifying such signatures. These are normally asymmetric, for symmetric signatures see [mac].
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A family of lightweight symmetric block-ciphers designed for good performance in hardware with block sizes ranging from 32 to 128 bits and key sizes ranging from 64 to 256 bits.
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a two-pass AEAD block cipher mode of operation described in RFC 5297. It can be used either for key-wrap (nonce-less deterministic authenticated encryption) or…
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a cryptographic hash function. It was designed for the SHA-3 competition where it became a finalist, but wasn't chosen as SHA-3.
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a 64-bit block cipher developed by the U.S. National Security Agency (NSA).
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Secure/Multipurpose Internet Mail Extensions, or short S-MIME, is a standard for public key encryption and signing of MIME data.
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the deliberate act of creating obfuscated code by making source or machine code difficult to understand from a human point of view.
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A family of lightweight symmetric block-ciphers designed for good performance in constrained software devices with block sizes ranging from 32 to 128 bits and key sizes ranging from 64 to 256 bits.
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a construction scheme for hash functions (and other symmetric primitives) based on an unkeyed permutation. The most famous example is Keccak, which won the SHA-3 competitio…
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Secure remote password protocol
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Secure Remote Password protocol version 6.
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an authentication protocol (described in RFC 4252) for securely getting access to a remote computer.
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SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) are protocols which provide communication security (privacy and integrity) for a bidirectional data channel.
a VPN tunneling protocol that allows the tunneling of PPP or L2TP traffic over an SSL connection.
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Questions about official cryptographic standards and their implementation.
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used to estimate the likelihood of a hypothesis given a set of data. In cryptanalysis, statistical testing is commonly used to detect non-randomness in the data, e.g. distinguis…
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the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message. While cryptography prot…
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an encryption algorithm which encrypts arbitrary length plain text, using a (fixed length) key. Some stream ciphers generate a key stream from only the key, which is then XOR-combin…
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an encryption algorithm which works by replacing plaintext units with corresponding ciphertext units, following some rule depending on the key.
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Symmetric cryptosystems assume two communicating entities share a pre-established secret key.
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a block cipher by David Wheeler and Roger Needham of the Cambridge Computer Laboratory; notable for its simplicity of description and implementation.
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Questions about the meaning and proper use of specific technical terms or notation within cryptography.
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a set of inputs used to test new and/or established cryptographic designs and/or implementations.