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//
// Copyright (c) SAS Institute 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 shared
import (
"crypto"
"fmt"
"github.com/spf13/cobra"
"github.com/sassoftware/relic/v7/lib/x509tools"
)
var ArgDigest string
const DefaultHash = "SHA-256"
func AddDigestFlag(cmd *cobra.Command) {
cmd.Flags().StringVar(&ArgDigest, "digest", DefaultHash, "Specify a digest algorithm")
}
func GetDigest() (hash crypto.Hash, err error) {
if ArgDigest == "" {
// TODO: figure out why this randomly started coming back blank
ArgDigest = DefaultHash
}
hash = x509tools.HashByName(ArgDigest)
if hash == 0 {
err = fmt.Errorf("unsupported digest \"%s\"", ArgDigest)
}
return hash, err
}
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