ECHO

ECHO Algorithm More...

Typedefs
typedef hasher< detail::echo_provider<>, mixin::echo_mixin >	digestpp::echo
	Echo hash function.
template<size_t N>
using	digestpp::static_size::echo = hasher<detail::echo_provider<N>, mixin::echo_mixin>
	Echo hash function (static-size version)

Detailed Description

ECHO Algorithm

Typedef Documentation

echo [1/2]

typedef hasher<detail::echo_provider<>, mixin::echo_mixin> digestpp::echo

Echo hash function.

SHA-3 competition candidate based on AES-like operations. Designed by Ryad Benadjila, Olivier Billet, Henri Gilbert, Gilles Macario-Rat, Thomas Peyrin, Matt Robshaw, and Yannick Seurin.

Echo uses AES-like components in a wide-pipe construction and supports salted hashing for additional security in specific scenarios.

SHA-3 candidate (second round).

Type:

Cryptographic hash function.

Output size:

8 - 512 bits

Default size:

none (must be specified)

Exceptions

std::runtime_error

if the requested digest size is not divisible by 8 (full bytes), or is not within the supported range

Optional parameters:

• set_salt() - 16-byte salt for randomized hashing

Optional parameters:

salt

See mixin::echo_mixin for the description of optional parameters.

Example:

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

Example output:

3c3c10b84e818cbddfd71e1aefc6cb9cd7fd1b84acb5765813e716734a97d422

See also

hasher, digestpp::static_size::echo

echo [2/2]

template<size_t N>

using digestpp::static_size::echo = hasher<detail::echo_provider<N>, mixin::echo_mixin>

Echo hash function (static-size version)

Variant of Echo with output size specified as template parameter.

Type:

Cryptographic hash function.

Output size:

8 - 512 bits

Optional parameters:

• set_salt() - 16-byte salt for randomized hashing

Optional parameters:

salt

See mixin::echo_mixin for the description of optional parameters.

Example:

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

Example output:

3c3c10b84e818cbddfd71e1aefc6cb9cd7fd1b84acb5765813e716734a97d422

See also

hasher, groestl, digestpp::echo