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/
hash.go
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/
hash.go
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// Copyright (C) 2018 MediBloc
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>
package hash
import (
"crypto/sha256"
"github.com/gogo/protobuf/proto"
"github.com/medibloc/go-medibloc/crypto/signature/algorithm"
"golang.org/x/crypto/ripemd160"
"golang.org/x/crypto/sha3"
)
// Sha256 returns the SHA-256 digest of the data.
func Sha256(args ...[]byte) []byte {
hasher := sha256.New()
for _, bytes := range args {
hasher.Write(bytes)
}
return hasher.Sum(nil)
}
// Sha3256 returns the SHA3-256 digest of the data.
func Sha3256(args ...[]byte) []byte {
hasher := sha3.New256()
for _, bytes := range args {
hasher.Write(bytes)
}
return hasher.Sum(nil)
}
// Sha3256Pb returns the SAH#-256 diggest of the data from protobuf type
func Sha3256Pb(pb proto.Message) []byte {
b, _ := proto.Marshal(pb)
return Sha3256(b)
}
// Ripemd160 return the RIPEMD160 digest of the data.
func Ripemd160(args ...[]byte) []byte {
hasher := ripemd160.New()
for _, bytes := range args {
hasher.Write(bytes)
}
return hasher.Sum(nil)
}
// GenHash generates hash
func GenHash(alg algorithm.HashAlgorithm, args ...[]byte) ([]byte, error) {
switch alg {
case algorithm.SHA3256:
return Sha3256(args...), nil
default:
return nil, algorithm.ErrInvalidCryptoAlgorithm
}
}