49 lines
988 B
Go
49 lines
988 B
Go
package crypto
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import (
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"fmt"
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"hash/fnv"
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"github.com/hashicorp/golang-lru"
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"github.com/lucas-clemente/quic-go/internal/protocol"
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)
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var (
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compressedCertsCache *lru.Cache
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)
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func getCompressedCert(chain [][]byte, pCommonSetHashes, pCachedHashes []byte) ([]byte, error) {
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// Hash all inputs
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hasher := fnv.New64a()
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for _, v := range chain {
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hasher.Write(v)
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}
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hasher.Write(pCommonSetHashes)
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hasher.Write(pCachedHashes)
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hash := hasher.Sum64()
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var result []byte
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resultI, isCached := compressedCertsCache.Get(hash)
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if isCached {
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result = resultI.([]byte)
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} else {
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var err error
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result, err = compressChain(chain, pCommonSetHashes, pCachedHashes)
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if err != nil {
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return nil, err
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}
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compressedCertsCache.Add(hash, result)
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}
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return result, nil
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}
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func init() {
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var err error
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compressedCertsCache, err = lru.New(protocol.NumCachedCertificates)
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if err != nil {
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panic(fmt.Sprintf("fatal error in quic-go: could not create lru cache: %s", err.Error()))
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}
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}
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