28 lines
661 B
Go
28 lines
661 B
Go
package config
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import (
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"crypto/sha256"
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"io"
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"golang.org/x/crypto/hkdf"
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"github.com/libp2p/go-libp2p/core/crypto"
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"github.com/lucas-clemente/quic-go"
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)
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const statelessResetKeyInfo = "libp2p quic stateless reset key"
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func PrivKeyToStatelessResetKey(key crypto.PrivKey) (quic.StatelessResetKey, error) {
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var statelessResetKey quic.StatelessResetKey
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keyBytes, err := key.Raw()
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if err != nil {
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return statelessResetKey, err
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}
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keyReader := hkdf.New(sha256.New, keyBytes, nil, []byte(statelessResetKeyInfo))
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if _, err := io.ReadFull(keyReader, statelessResetKey[:]); err != nil {
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return statelessResetKey, err
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}
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return statelessResetKey, nil
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}
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