0662af19d1
This is important as otherwise `math/rand` outputs predictable sequence each time. Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
26 lines
573 B
Go
26 lines
573 B
Go
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package startup
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import (
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cryptorand "crypto/rand"
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"encoding/binary"
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"math/rand"
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"github.com/pkg/errors"
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)
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// RandSeed default math/rand PRNG.
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func RandSeed() error {
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seed := make([]byte, 8)
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if _, err := cryptorand.Read(seed); err != nil {
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return errors.Wrap(err, "error seeding rand")
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}
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rand.Seed(int64(binary.LittleEndian.Uint64(seed)))
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return nil
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}
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