mirror of https://github.com/XTLS/Xray-core
48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
package quic
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/sha256"
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"github.com/xtls/xray-core/common"
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"github.com/xtls/xray-core/common/protocol"
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"github.com/xtls/xray-core/transport/internet"
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"golang.org/x/crypto/chacha20poly1305"
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)
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func getAuth(config *Config) (cipher.AEAD, error) {
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security := config.Security.GetSecurityType()
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if security == protocol.SecurityType_NONE {
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return nil, nil
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}
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salted := []byte(config.Key + "xray-quic-salt")
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key := sha256.Sum256(salted)
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if security == protocol.SecurityType_AES128_GCM {
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block, err := aes.NewCipher(key[:16])
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common.Must(err)
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return cipher.NewGCM(block)
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}
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if security == protocol.SecurityType_CHACHA20_POLY1305 {
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return chacha20poly1305.New(key[:])
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}
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return nil, newError("unsupported security type")
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}
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func getHeader(config *Config) (internet.PacketHeader, error) {
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if config.Header == nil {
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return nil, nil
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}
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msg, err := config.Header.GetInstance()
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if err != nil {
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return nil, err
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}
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return internet.CreatePacketHeader(msg)
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}
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