43 lines
1 KiB
Go
43 lines
1 KiB
Go
/*
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Copyright CAcert Inc.
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SPDX-License-Identifier: Apache-2.0
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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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https://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package services
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import (
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"crypto/rand"
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"errors"
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"log/slog"
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)
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var errCouldNotGenerateKey = errors.New("could not generate key")
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func GenerateKey(length int) ([]byte, error) {
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key := make([]byte, length)
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read, err := rand.Read(key)
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if err != nil {
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return nil, errCouldNotGenerateKey
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}
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if read != length {
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slog.Error("read unexpected number of bytes", "read", read, "expected", length)
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return nil, errCouldNotGenerateKey
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}
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return key, nil
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}
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