github.com/cs3org/reva/v2@v2.27.7/pkg/sdk/common/crypto/crypto.go (about)

     1  // Copyright 2018-2021 CERN
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // In applying this license, CERN does not waive the privileges and immunities
    16  // granted to it by virtue of its status as an Intergovernmental Organization
    17  // or submit itself to any jurisdiction.
    18  
    19  package crypto
    20  
    21  import (
    22  	"fmt"
    23  	"io"
    24  
    25  	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
    26  
    27  	"github.com/cs3org/reva/v2/internal/grpc/services/storageprovider"
    28  	"github.com/cs3org/reva/v2/pkg/crypto"
    29  )
    30  
    31  // ComputeChecksum calculates the checksum of the given data using the specified checksum type.
    32  func ComputeChecksum(checksumType provider.ResourceChecksumType, data io.Reader) (string, error) {
    33  	switch checksumType {
    34  	case provider.ResourceChecksumType_RESOURCE_CHECKSUM_TYPE_ADLER32:
    35  		return crypto.ComputeAdler32XS(data)
    36  	case provider.ResourceChecksumType_RESOURCE_CHECKSUM_TYPE_MD5:
    37  		return crypto.ComputeMD5XS(data)
    38  	case provider.ResourceChecksumType_RESOURCE_CHECKSUM_TYPE_SHA1:
    39  		return crypto.ComputeSHA1XS(data)
    40  	case provider.ResourceChecksumType_RESOURCE_CHECKSUM_TYPE_UNSET:
    41  		return "", nil
    42  	default:
    43  		return "", fmt.Errorf("invalid checksum type: %s", checksumType)
    44  	}
    45  }
    46  
    47  // GetChecksumTypeName returns a stringified name of the given checksum type.
    48  func GetChecksumTypeName(checksumType provider.ResourceChecksumType) string {
    49  	return string(storageprovider.GRPC2PKGXS(checksumType))
    50  }