impl: t544 sign algorithm

cmd/gocq/encryption/config.go

@@ -0,0 +1,3 @@
+package encryption
+
+var T544Signer = map[string]func(int64, []byte) []byte{}

cmd/gocq/encryption/t544/cpuid_amd64.go

@@ -0,0 +1,10 @@
+//go:build amd64
+
+package t544
+
+func cpuid(op uint32) (eax, ebx, ecx, edx uint32)
+
+var canusesse2 = func() bool {
+ _, _, _, d := cpuid(1)
+ return d&(1<<26) > 0
+}()

cmd/gocq/encryption/t544/cpuid_amd64.s

@@ -0,0 +1,15 @@
+//go:build amd64
+// +build amd64
+
+// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+
+// func cpuid(op uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·cpuid(SB), 7, $0
+ XORQ CX, CX
+ MOVL op+0(FP), AX
+ CPUID
+ MOVL AX, eax+8(FP)
+ MOVL BX, ebx+12(FP)
+ MOVL CX, ecx+16(FP)
+ MOVL DX, edx+20(FP)
+ RET

cmd/gocq/encryption/t544/data.go

@@ -0,0 +1,30 @@
+//go:build amd64
+
+package t544
+
+import (
+ "archive/zip"
+ "bytes"
+ "io"
+ "unsafe"
+
+ base14 "github.com/fumiama/go-base16384"
+)
+
+var cryptoData = base14.DecodeFromString(
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+)
+
+var cryptoZip, _ = zip.NewReader(bytes.NewReader(cryptoData), int64(len(cryptoData)))
+
+func readData[T any](name string) T {
+ f, err := cryptoZip.Open(name)
+ if err != nil {
+ panic(err)
+ }
+ data, err := io.ReadAll(f)
+ if err != nil {
+ panic(err)
+ }
+ return *(*T)(*(*unsafe.Pointer)(unsafe.Pointer(&data)))
+}

cmd/gocq/encryption/t544/encryption.go

@@ -0,0 +1,53 @@
+//go:build amd64
+
+package t544
+
+import (
+ "encoding/binary"
+ "hash/crc32"
+ "io"
+)
+
+var crc32Table = func() (tab crc32.Table) {
+ f, err := cryptoZip.Open("crc32.bin")
+ if err != nil {
+ panic(err)
+ }
+ data, err := io.ReadAll(f)
+ if err != nil {
+ panic(err)
+ }
+ for i := range tab {
+ tab[i] = binary.LittleEndian.Uint32(data[i*4 : (i+1)*4])
+ }
+ return
+}()
+
+func tencentCrc32(tab *crc32.Table, b []byte) uint32
+
+func sub_a([]byte, []uint32)
+
+func sub_b([]byte, []uint32)
+
+func sub_c(*[16][16]byte, []byte)
+
+func sub_d(*[16]byte, []byte)
+
+func sub_e(*[256][6]byte, []byte)
+
+func sub_f(*[16]byte, *[15]uint32, *[16][16]byte) (w [44]uint32)
+
+func sub_aa(int, *[16][2][16][16]byte, *[16]byte, []byte) byte
+
+// transformInner see com/tencent/mobileqq/dt/model/FEBound
+func transformInner(*[0x15]byte, *[32][16]byte)
+
+func initState(*state, []byte, []byte, uint64)
+
+func (c *state) init(key []byte, data []byte, counter uint64, nr uint8) {
+ c.nr = nr
+ c.p = 0
+ initState(c, key, data, counter)
+}
+
+func sub_ad([]uint32)