github.com/jiajun1992/watercarver@v0.0.0-20191031150618-dfc2b17c0c4a/go-ethereum/ctcrypto/crypto/keccak.go (about)

     1  // Copyright 2017-2018 DERO Project. All rights reserved.
     2  // Use of this source code in any form is governed by RESEARCH license.
     3  // license can be found in the LICENSE file.
     4  // GPG: 0F39 E425 8C65 3947 702A  8234 08B2 0360 A03A 9DE8
     5  //
     6  //
     7  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
     8  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     9  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
    10  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    11  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    12  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    13  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    14  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
    15  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    16  
    17  package crypto
    18  
    19  import "golang.org/x/crypto/sha3"
    20  
    21  // Keccak256 calculates and returns the Keccak256 hash of the input data.
    22  func Keccak256(data ...[]byte) (result Hash) {
    23  	d := sha3.NewLegacyKeccak256()
    24  	for _, b := range data {
    25  		d.Write(b)
    26  	}
    27  	r := d.Sum(nil)
    28  	copy(result[:], r)
    29  	return
    30  }
    31  
    32  // Keccak512 calculates and returns the Keccak512 hash of the input data.
    33  func Keccak512(data ...[]byte) (result Hash) {
    34  	d := sha3.NewLegacyKeccak512()
    35  	for _, b := range data {
    36  		d.Write(b)
    37  	}
    38  	r := d.Sum(nil)
    39  	copy(result[:], r)
    40  	return
    41  }