SHA3

SHA3 Algorithm More...

Typedefs
typedef hasher< detail::sha3_provider<> >	digestpp::sha3
	SHA-3 hash function.
template<size_t N>
using	digestpp::static_size::sha3 = hasher<detail::sha3_provider<N>>
	SHA-3 hash function (static-size version)

Detailed Description

SHA3 Algorithm

Typedef Documentation

sha3 [1/2]

typedef hasher<detail::sha3_provider<> > digestpp::sha3

SHA-3 hash function.

Winner of the NIST SHA-3 competition (2012), based on the Keccak algorithm. Designed by Guido Bertoni, Joan Daemen, Michaël Peeters, and Gilles Van Assche.

SHA-3 uses a completely different design (sponge construction) compared to SHA-1 and SHA-2. It provides an alternative to SHA-2 with different security properties and resistance to length-extension attacks.

Specified in FIPS 202 (2015). SHA-3 is not a replacement for SHA-2, but an alternative. SHA-2 remains secure and widely used; SHA-3 provides diversity.

Type:

Cryptographic hash function.

Output size:

224 / 256 / 384 / 512 bits

Default size:

none (must be specified)

Exceptions

std::runtime_error

if the requested digest size is not supported

Example:

 // Output a 256-bit SHA-3 digest of a string
digestpp::sha3 hasher(256);
hasher.absorb("The quick brown fox jumps over the lazy dog");
std::cout << hasher.hexdigest() << '\n';

Example output:

69070dda01975c8c120c3aada1b282394e7f032fa9cf32f4cb2259a0897dfc04

See also

hasher, digestpp::static_size::sha3

sha3 [2/2]

template<size_t N>

using digestpp::static_size::sha3 = hasher<detail::sha3_provider<N>>

SHA-3 hash function (static-size version)

Variant of SHA-3 with output size specified as template parameter.

Type:

Cryptographic hash function.

Output size:

224 / 256 / 384 / 512 bits

Example:

 // Output a 256-bit SHA-3 digest of a string
digestpp::static_size::sha3<256> hasher;
hasher.absorb("The quick brown fox jumps over the lazy dog");
std::cout << hasher.hexdigest() << '\n';

Example output:

69070dda01975c8c120c3aada1b282394e7f032fa9cf32f4cb2259a0897dfc04

See also

hasher, digestpp::sha3