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v2fly/transport/internet/tls/pin.go

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2021-04-15 15:02:48 -04:00
package tls
import (
"crypto/sha256"
"encoding/base64"
"encoding/pem"
)
func CalculatePEMCertChainSHA256Hash(certContent []byte) string {
var certChain [][]byte
for {
block, remain := pem.Decode(certContent)
if block == nil {
break
}
certChain = append(certChain, block.Bytes)
certContent = remain
}
certChainHash := GenerateCertChainHash(certChain)
certChainHashB64 := base64.StdEncoding.EncodeToString(certChainHash)
return certChainHashB64
}
func GenerateCertChainHash(rawCerts [][]byte) []byte {
var hashValue []byte
for _, certValue := range rawCerts {
out := sha256.Sum256(certValue)
if hashValue == nil {
hashValue = out[:]
} else {
newHashValue := sha256.Sum256(append(hashValue, out[:]...))
hashValue = newHashValue[:]
}
}
return hashValue
}