mirror of
https://github.com/apernet/OpenGFW.git
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60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package quic
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const (
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V1 uint32 = 0x1
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V2 uint32 = 0x6b3343cf
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hkdfLabelKeyV1 = "quic key"
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hkdfLabelKeyV2 = "quicv2 key"
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hkdfLabelIVV1 = "quic iv"
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hkdfLabelIVV2 = "quicv2 iv"
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hkdfLabelHPV1 = "quic hp"
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hkdfLabelHPV2 = "quicv2 hp"
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)
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var (
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quicSaltOld = []byte{0xaf, 0xbf, 0xec, 0x28, 0x99, 0x93, 0xd2, 0x4c, 0x9e, 0x97, 0x86, 0xf1, 0x9c, 0x61, 0x11, 0xe0, 0x43, 0x90, 0xa8, 0x99}
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// https://www.rfc-editor.org/rfc/rfc9001.html#name-initial-secrets
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quicSaltV1 = []byte{0x38, 0x76, 0x2c, 0xf7, 0xf5, 0x59, 0x34, 0xb3, 0x4d, 0x17, 0x9a, 0xe6, 0xa4, 0xc8, 0x0c, 0xad, 0xcc, 0xbb, 0x7f, 0x0a}
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// https://www.ietf.org/archive/id/draft-ietf-quic-v2-10.html#name-initial-salt-2
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quicSaltV2 = []byte{0x0d, 0xed, 0xe3, 0xde, 0xf7, 0x00, 0xa6, 0xdb, 0x81, 0x93, 0x81, 0xbe, 0x6e, 0x26, 0x9d, 0xcb, 0xf9, 0xbd, 0x2e, 0xd9}
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)
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// isLongHeader reports whether b is the first byte of a long header packet.
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func isLongHeader(b byte) bool {
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return b&0x80 > 0
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}
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func getSalt(v uint32) []byte {
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switch v {
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case V1:
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return quicSaltV1
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case V2:
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return quicSaltV2
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}
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return quicSaltOld
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}
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func keyLabel(v uint32) string {
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kl := hkdfLabelKeyV1
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if v == V2 {
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kl = hkdfLabelKeyV2
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}
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return kl
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}
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func ivLabel(v uint32) string {
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ivl := hkdfLabelIVV1
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if v == V2 {
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ivl = hkdfLabelIVV2
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}
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return ivl
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}
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func headerProtectionLabel(v uint32) string {
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if v == V2 {
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return hkdfLabelHPV2
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}
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return hkdfLabelHPV1
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}
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