diff --git a/binary/tea.go b/binary/tea.go
index 058a6c57..1465f6a4 100644
--- a/binary/tea.go
+++ b/binary/tea.go
@@ -3,82 +3,47 @@ package binary
 import (
 	"encoding/binary"
 	"math/rand"
-	"reflect"
-	"unsafe"
-
-	"github.com/segmentio/asm/bswap"
-
-	"github.com/Mrs4s/MiraiGo/internal/cpu"
 )
 
-func xorQ(a, b []byte, c []byte) { // MAGIC
-	*(*uint64)(unsafe.Pointer(&c[0])) =
-		*(*uint64)(unsafe.Pointer(&a[0])) ^ *(*uint64)(unsafe.Pointer(&b[0]))
-}
-
 type TEA [4]uint32
 
 // Encrypt tea 加密
 // http://bbs.chinaunix.net/thread-583468-1-1.html
 // 感谢xichen大佬对TEA的解释
-func (t *TEA) Encrypt(src []byte) (dst []byte) {
+func (t TEA) Encrypt(src []byte) (dst []byte) {
 	lens := len(src)
 	fill := 10 - (lens+1)%8
 	dst = make([]byte, fill+lens+7)
 	_, _ = rand.Read(dst[0:fill])
 	dst[0] = byte(fill-3) | 0xF8 // 存储pad长度
 	copy(dst[fill:], src)
-	if cpu.LittleEndian {
-		bswap.Swap64(dst)
-	}
 
-	var iv1, iv2, holder int64
-	var blocks []int64
-	dstHeader := (*reflect.SliceHeader)(unsafe.Pointer(&dst))
-	blocksHeader := (*reflect.SliceHeader)(unsafe.Pointer(&blocks))
-	blocksHeader.Data = dstHeader.Data
-	blocksHeader.Len = dstHeader.Len / 8
-	blocksHeader.Cap = blocksHeader.Len
-	for i, block := range blocks {
+	var iv1, iv2, holder uint64
+	for i := 0; i < len(dst); i += 8 {
+		block := binary.BigEndian.Uint64(dst[i:])
 		holder = block ^ iv1
 		iv1 = t.encode(holder)
 		iv1 = iv1 ^ iv2
 		iv2 = holder
-		blocks[i] = iv1
-	}
-	if cpu.LittleEndian {
-		bswap.Swap64(dst)
+		binary.BigEndian.PutUint64(dst[i:], iv1)
 	}
+
 	return dst
 }
 
-func (t *TEA) Decrypt(data []byte) []byte {
+func (t TEA) Decrypt(data []byte) []byte {
 	if len(data) < 16 || len(data)%8 != 0 {
 		return nil
 	}
 	dst := make([]byte, len(data))
-	copy(dst, data)
-	if cpu.LittleEndian {
-		bswap.Swap64(dst)
-	}
-
-	var iv1, iv2, holder, tmp int64
-	var blocks []int64
-	dstHeader := (*reflect.SliceHeader)(unsafe.Pointer(&dst))
-	blocksHeader := (*reflect.SliceHeader)(unsafe.Pointer(&blocks))
-	blocksHeader.Data = dstHeader.Data
-	blocksHeader.Len = dstHeader.Len / 8
-	blocksHeader.Cap = blocksHeader.Len
-	for i, block := range blocks {
+	var iv1, iv2, holder, tmp uint64
+	for i := 0; i < len(dst); i += 8 {
+		block := binary.BigEndian.Uint64(data[i:])
 		tmp = t.decode(block ^ iv2)
 		iv2 = tmp
 		holder = tmp ^ iv1
 		iv1 = block
-		blocks[i] = holder
-	}
-
-	if cpu.LittleEndian {
-		bswap.Swap64(dst)
+		binary.BigEndian.PutUint64(dst[i:], holder)
 	}
 	return dst[dst[0]&7+3 : len(data)-7]
 }
@@ -103,32 +68,62 @@ var sumTable = [0x10]uint32{
 }
 
 //go:nosplit
-func (t *TEA) encode(n int64) int64 {
+func (t *TEA) encode(n uint64) uint64 {
 	v0, v1 := uint32(n>>32), uint32(n)
 	for i := 0; i < 0x10; i++ {
 		v0 += ((v1 << 4) + t[0]) ^ (v1 + sumTable[i]) ^ ((v1 >> 5) + t[1])
 		v1 += ((v0 << 4) + t[2]) ^ (v0 + sumTable[i]) ^ ((v0 >> 5) + t[3])
 	}
-	return int64(v0)<<32 | int64(v1)
+	return uint64(v0)<<32 | uint64(v1)
 }
 
 // 每次8字节
 //go:nosplit
-func (t *TEA) decode(n int64) int64 {
+func (t *TEA) decode(n uint64) uint64 {
 	v0, v1 := uint32(n>>32), uint32(n)
-	for i := 0xf; i >= 0; i-- {
-		v1 -= ((v0 << 4) + t[2]) ^ (v0 + sumTable[i]) ^ ((v0 >> 5) + t[3])
-		v0 -= ((v1 << 4) + t[0]) ^ (v1 + sumTable[i]) ^ ((v1 >> 5) + t[1])
-	}
-	return int64(v0)<<32 | int64(v1)
+	t0, t1, t2, t3 := t[0], t[1], t[2], t[3]
+
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0xe3779b90) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0xe3779b90) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x454021d7) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x454021d7) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0xa708a81e) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0xa708a81e) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x8d12e65) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x8d12e65) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x6a99b4ac) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x6a99b4ac) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0xcc623af3) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0xcc623af3) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x2e2ac13a) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x2e2ac13a) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x8ff34781) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x8ff34781) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0xf1bbcdc8) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0xf1bbcdc8) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x5384540f) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x5384540f) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0xb54cda56) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0xb54cda56) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x1715609d) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x1715609d) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x78dde6e4) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x78dde6e4) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0xdaa66d2b) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0xdaa66d2b) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x3c6ef372) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x3c6ef372) ^ ((v1 >> 5) + t1)
+	v1 -= ((v0 << 4) + t2) ^ (v0 + 0x9e3779b9) ^ ((v0 >> 5) + t3)
+	v0 -= ((v1 << 4) + t0) ^ (v1 + 0x9e3779b9) ^ ((v1 >> 5) + t1)
+
+	return uint64(v0)<<32 | uint64(v1)
 }
 
 //go:nosplit
-func NewTeaCipher(key []byte) *TEA {
+func NewTeaCipher(key []byte) (t TEA) {
 	if len(key) != 16 {
-		return nil
+		return TEA{}
 	}
-	t := new(TEA)
 	t[3] = binary.BigEndian.Uint32(key[12:])
 	t[2] = binary.BigEndian.Uint32(key[8:])
 	t[1] = binary.BigEndian.Uint32(key[4:])
diff --git a/go.mod b/go.mod
index 7bacd38b..9d01057f 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,6 @@ go 1.16
 require (
 	github.com/klauspost/compress v1.13.6
 	github.com/pkg/errors v0.9.1
-	github.com/segmentio/asm v1.1.0
 	github.com/stretchr/testify v1.3.0
 	github.com/tidwall/gjson v1.11.0
 	golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f
diff --git a/go.sum b/go.sum
index 5cbf4f7c..ae8bb42b 100644
--- a/go.sum
+++ b/go.sum
@@ -5,14 +5,10 @@ github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
 github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
-github.com/klauspost/cpuid/v2 v2.0.6 h1:dQ5ueTiftKxp0gyjKSx5+8BtPWkyQbd95m8Gys/RarI=
-github.com/klauspost/cpuid/v2 v2.0.6/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/segmentio/asm v1.1.0 h1:fkVr8k5J4sKoFjTGVD6r1yKvDKqmvrEh3K7iyVxgBs8=
-github.com/segmentio/asm v1.1.0/go.mod h1:4EUJGaKsB8ImLUwOGORVsNd9vTRDeh44JGsY4aKp5I4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
diff --git a/internal/cpu/big_endian.go b/internal/cpu/big_endian.go
deleted file mode 100644
index f29b953d..00000000
--- a/internal/cpu/big_endian.go
+++ /dev/null
@@ -1,6 +0,0 @@
-//go:build armbe || arm64be || mips || mips64 || ppc || ppc64 || s390 || s390x || sparc || sparc64
-// +build armbe arm64be mips mips64 ppc ppc64 s390 s390x sparc sparc64
-
-package cpu
-
-const LittleEndian = false
diff --git a/internal/cpu/little_endian.go b/internal/cpu/little_endian.go
deleted file mode 100644
index 18d47df1..00000000
--- a/internal/cpu/little_endian.go
+++ /dev/null
@@ -1,6 +0,0 @@
-//go:build 386 || amd64 || arm || arm64 || mipsle || mips64le || ppc64le || riscv || riscv64 || wasm
-// +build 386 amd64 arm arm64 mipsle mips64le ppc64le riscv riscv64 wasm
-
-package cpu
-
-const LittleEndian = true