forked from project-alvarium/alvarium-sdk-go
/
provider.go
35 lines (31 loc) · 1.21 KB
/
provider.go
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/*******************************************************************************
* Copyright 2021 Dell Inc.
*
* Licensed 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 sha256
import (
crypto "crypto/sha256"
"encoding/hex"
)
// provider is a receiver that encapsulates required dependencies.
type provider struct{}
// New is a factory function that returns an initialized provider.
func New() *provider {
return &provider{}
}
// Derive converts data to an identity value.
func (*provider) Derive(data []byte) string {
h := crypto.Sum256(data)
hashEncoded := make([]byte, hex.EncodedLen(len(h)))
hex.Encode(hashEncoded, h[:])
return string(hashEncoded)
}