mirror of
https://github.com/yunionio/cloudpods.git
synced 2026-11-05 15:31:49 +08:00
36 lines
971 B
Go
36 lines
971 B
Go
// Copyright 2019 Yunion
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package seclib2
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import (
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"crypto/sha256"
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"encoding/binary"
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"fmt"
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)
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func HashId(seed string, idx byte, width int) string {
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h := sha256.New()
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h.Write([]byte(seed))
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if idx > 0 {
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h.Write([]byte{idx})
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}
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sum := h.Sum(nil)
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numStr := fmt.Sprintf(fmt.Sprintf("%%0%dx", width), binary.BigEndian.Uint64(sum[:8]))
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if len(numStr) > width {
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numStr = numStr[:width]
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}
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return numStr
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}
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