/
definitions.go
56 lines (49 loc) · 1.65 KB
/
definitions.go
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// Licensed to Butcher under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Butcher licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package hasher
import (
"crypto/sha512"
"golang.org/x/crypto/argon2"
)
// Algorithm is the password hashing strategy code
type Algorithm uint8
const (
// Argon2id defines the argon2i hashing algorithm
Argon2id = Algorithm(0x01)
// Pbkdf2HmacSha512 defines pbkdf2+hmac-sha512 hashing algorithm
Pbkdf2HmacSha512 = Algorithm(0x02)
// Scrypt defines scrypt hashing algorithm
Scrypt = Algorithm(0x03)
)
const (
pbkdf2Iterations = 500000
)
// Strategies defines available hashing strategies
var Strategies = map[Algorithm]func(func() []byte) Strategy{
Argon2id: func(salt func() []byte) Strategy {
s, _ := newArgon2Deriver(salt(), argon2.IDKey)
return s
},
Scrypt: func(salt func() []byte) Strategy {
s, _ := newScryptDeriver(salt())
return s
},
Pbkdf2HmacSha512: func(salt func() []byte) Strategy {
s, _ := newPbkdf2Deriver(sha512.New, salt(), pbkdf2Iterations, sha512.Size)
return s
},
}