forked from quic-go/quic-go
54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
package crypto
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import (
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"bytes"
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"compress/zlib"
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"crypto"
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"crypto/rand"
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"crypto/rsa"
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"crypto/sha256"
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"crypto/x509"
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"io/ioutil"
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"github.com/lucas-clemente/quic-go/utils"
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)
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// KeyData stores a key and a certificate for the server proof
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type KeyData struct {
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key *rsa.PrivateKey
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cert *x509.Certificate
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}
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// LoadKeyData loads the key and cert from files
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func LoadKeyData(certFileName string, keyFileName string) (*KeyData, error) {
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keyDER, err := ioutil.ReadFile(keyFileName)
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if err != nil {
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return nil, err
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}
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key, err := x509.ParsePKCS1PrivateKey(keyDER)
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if err != nil {
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return nil, err
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}
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certDER, err := ioutil.ReadFile(certFileName)
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if err != nil {
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return nil, err
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}
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cert, err := x509.ParseCertificate(certDER)
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if err != nil {
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return nil, err
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}
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return &KeyData{key: key, cert: cert}, nil
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}
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// SignServerProof signs CHLO and server config for use in the server proof
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func (kd *KeyData) SignServerProof(chlo []byte, serverConfigData []byte) ([]byte, error) {
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hash := sha256.New()
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hash.Write([]byte("QUIC CHLO and server config signature\x00"))
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chloHash := sha256.Sum256(chlo)
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hash.Write([]byte{32, 0, 0, 0})
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hash.Write(chloHash[:])
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hash.Write(serverConfigData)
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return rsa.SignPSS(rand.Reader, kd.key, crypto.SHA256, hash.Sum(nil), &rsa.PSSOptions{SaltLength: 32})
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}
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