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Add xchacha20-ietf-poly1305 for Shadowsocks

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This commit is contained in:
maskedeken 2021-05-25 23:45:48 +08:00 committed by 世界
parent 3fe61ed4a2
commit 238bd5d050
No known key found for this signature in database
GPG Key ID: CD109927C34A63C4
5 changed files with 52 additions and 23 deletions
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8
common/crypto/auth.go
View File

@ -43,6 +43,14 @@ func GenerateInitialAEADNonce() BytesGenerator {
return GenerateIncreasingNonce([]byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF})
}
func GenerateAEADNonceWithSize(nonceSize int) BytesGenerator {
c := make([]byte, nonceSize)
for i := 0; i < nonceSize; i++ {
c[i] = 0xFF
}
return GenerateIncreasingNonce(c)
}
type Authenticator interface {
NonceSize() int
Overhead() int

2
infra/conf/shadowsocks.go
View File

@ -18,6 +18,8 @@ func cipherFromString(c string) shadowsocks.CipherType {
return shadowsocks.CipherType_AES_256_GCM
case "chacha20-poly1305", "aead_chacha20_poly1305", "chacha20-ietf-poly1305":
return shadowsocks.CipherType_CHACHA20_POLY1305
case "xchacha20-poly1305", "aead_xchacha20_poly1305", "xchacha20-ietf-poly1305":
return shadowsocks.CipherType_XCHACHA20_POLY1305
case "none", "plain":
return shadowsocks.CipherType_NONE
default:

17
proxy/shadowsocks/config.go
View File

@ -77,6 +77,12 @@ func createChaCha20Poly1305(key []byte) cipher.AEAD {
return ChaChaPoly1305
}
func createXChaCha20Poly1305(key []byte) cipher.AEAD {
XChaChaPoly1305, err := chacha20poly1305.NewX(key)
common.Must(err)
return XChaChaPoly1305
}
func (a *Account) getCipher() (Cipher, error) {
switch a.CipherType {
case CipherType_AES_128_GCM:
@ -97,6 +103,12 @@ func (a *Account) getCipher() (Cipher, error) {
IVBytes: 32,
AEADAuthCreator: createChaCha20Poly1305,
}, nil
case CipherType_XCHACHA20_POLY1305:
return &AEADCipher{
KeyBytes: 32,
IVBytes: 32,
AEADAuthCreator: createXChaCha20Poly1305,
}, nil
case CipherType_NONE:
return NoneCipher{}, nil
default:
@ -152,11 +164,12 @@ func (c *AEADCipher) IVSize() int32 {
}
func (c *AEADCipher) createAuthenticator(key []byte, iv []byte) *crypto.AEADAuthenticator {
nonce := crypto.GenerateInitialAEADNonce()
subkey := make([]byte, c.KeyBytes)
hkdfSHA1(key, iv, subkey)
aead := c.AEADAuthCreator(subkey)
nonce := crypto.GenerateAEADNonceWithSize(aead.NonceSize())
return &crypto.AEADAuthenticator{
AEAD: c.AEADAuthCreator(subkey),
AEAD: aead,
NonceGenerator: nonce,
}
}

45
proxy/shadowsocks/config.pb.go
View File

@ -25,11 +25,12 @@ const (
type CipherType int32
const (
CipherType_UNKNOWN CipherType = 0
CipherType_AES_128_GCM CipherType = 5
CipherType_AES_256_GCM CipherType = 6
CipherType_CHACHA20_POLY1305 CipherType = 7
CipherType_NONE CipherType = 8
CipherType_UNKNOWN CipherType = 0
CipherType_AES_128_GCM CipherType = 5
CipherType_AES_256_GCM CipherType = 6
CipherType_CHACHA20_POLY1305 CipherType = 7
CipherType_XCHACHA20_POLY1305 CipherType = 8
CipherType_NONE CipherType = 9
)
// Enum value maps for CipherType.
@ -39,14 +40,16 @@ var (
5: "AES_128_GCM",
6: "AES_256_GCM",
7: "CHACHA20_POLY1305",
8: "NONE",
8: "XCHACHA20_POLY1305",
9: "NONE",
}
CipherType_value = map[string]int32{
"UNKNOWN": 0,
"AES_128_GCM": 5,
"AES_256_GCM": 6,
"CHACHA20_POLY1305": 7,
"NONE": 8,
"UNKNOWN": 0,
"AES_128_GCM": 5,
"AES_256_GCM": 6,
"CHACHA20_POLY1305": 7,
"XCHACHA20_POLY1305": 8,
"NONE": 9,
}
)
@ -274,20 +277,22 @@ var file_proxy_shadowsocks_config_proto_rawDesc = []byte{
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}
var (

3
proxy/shadowsocks/config.proto
View File

@ -22,7 +22,8 @@ enum CipherType {
AES_128_GCM = 5;
AES_256_GCM = 6;
CHACHA20_POLY1305 = 7;
NONE = 8;
XCHACHA20_POLY1305 = 8;
NONE = 9;
}
message ServerConfig {