fumiama/gofastTEA
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fix To func

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fumiama
2022-02-15 00:32:07 +08:00
parent 71ff104fd8
commit 0e36c3e985
4 changed files with 10 additions and 9 deletions
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6
tea_1.16.go
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@@ -48,7 +48,7 @@ func (t TEA) EncryptLittleEndianTo(src []byte, sumtable [0x10]uint32, dst []byte
var iv1, iv2, holder uint64
var v0, v1 uint32
for i := 0; i < len(dst); i += 8 {
for i := 0; i < fill+lens+7; i += 8 {
holder = binary.LittleEndian.Uint64(dst[i:]) ^ iv1
v0, v1 = uint32(holder>>32), uint32(holder)
for i := 0; i < 0x10; i++ {
@@ -124,7 +124,7 @@ func (t TEA) DecryptTo(data []byte, dst []byte) (from, to int) {
var iv1, iv2, holder uint64
var v0, v1 uint32
for i := 0; i < len(dst); i += 8 {
for i := 0; i < len(data); i += 8 {
iv1 = binary.BigEndian.Uint64(data[i:])
iv2 ^= iv1
v0, v1 = uint32(iv2>>32), uint32(iv2)
@@ -201,7 +201,7 @@ func (t TEA) DecryptLittleEndianTo(data []byte, sumtable [0x10]uint32, dst []byt
var iv1, iv2, holder uint64
var v0, v1 uint32
for i := 0; i < len(dst); i += 8 {
for i := 0; i < len(data); i += 8 {
iv1 = binary.LittleEndian.Uint64(data[i:])
iv2 ^= iv1
v0, v1 = uint32(iv2>>32), uint32(iv2)

5
tea_1.16_amd64.go
View File

@@ -35,8 +35,9 @@ func (t TEA) EncryptTo(src []byte, dst []byte) int {
binary.LittleEndian.PutUint32(dst[8:], randuint32())
dst[0] = byte(fill-3) | 0xF8 // 存储pad长度
copy(dst[fill:], src)
encrypt(uintptr(*(*unsafe.Pointer)(unsafe.Pointer(&dst)))|uintptr(len(dst)<<40), uintptr(unsafe.Pointer(&t))|(uintptr(len(dst)<<16)&0xffffff00_00000000))
return fill + lens + 7
dstlen := fill + lens + 7
encrypt(uintptr(*(*unsafe.Pointer)(unsafe.Pointer(&dst)))|uintptr(dstlen<<40), uintptr(unsafe.Pointer(&t))|(uintptr(dstlen<<16)&0xffffff00_00000000))
return dstlen
}
/*

2
tea_1.16_pure.go
View File

@@ -78,7 +78,7 @@ func (t TEA) EncryptTo(src []byte, dst []byte) int {
var iv1, iv2, holder uint64
var v0, v1 uint32
for i := 0; i < len(dst); i += 8 {
for i := 0; i < fill+lens+7; i += 8 {
holder = binary.BigEndian.Uint64(dst[i:]) ^ iv1
v0, v1 = uint32(holder>>32), uint32(holder)
v0 += (v1 + 0x9e3779b9) ^ ((v1 << 4) + t[0]) ^ ((v1 >> 5) + t[1])

6
tea_1.17.go
View File

@@ -86,7 +86,7 @@ func (t TEA) EncryptLittleEndianTo(src []byte, sumtable [0x10]uint32, dst []byte
copy(dst[fill:], src)
var iv1, iv2, holder uint64
for i := 0; i < len(dst); i += 8 {
for i := 0; i < fill+lens+7; i += 8 {
block := binary.LittleEndian.Uint64(dst[i:])
holder = block ^ iv1
iv1 = t.encodeTable(holder, sumtable)
@@ -119,7 +119,7 @@ func (t TEA) DecryptTo(data []byte, dst []byte) (from, to int) {
return -1, -1
}
var iv1, iv2, holder uint64
for i := 0; i < len(dst); i += 8 {
for i := 0; i < len(data); i += 8 {
iv1 = binary.BigEndian.Uint64(data[i:])
iv2 ^= iv1
iv2 = t.decode(iv2)
@@ -150,7 +150,7 @@ func (t TEA) DecryptLittleEndianTo(data []byte, sumtable [0x10]uint32, dst []byt
return -1, -1
}
var iv1, iv2, holder uint64
for i := 0; i < len(dst); i += 8 {
for i := 0; i < len(data); i += 8 {
iv1 = binary.LittleEndian.Uint64(data[i:])
iv2 ^= iv1
iv2 = t.decodeTable(iv2, sumtable)