建议安装使用最新版，官方下载地址 https://www.charlesproxy.com/download
此工具用于计算Charles激活码，下载代码 ，在线运行代码：https://play.golang.org/p/Qtt2CmHbTzU
blog介绍: https://blog.zzzmode.com/2017/05/16/charles-4.0.2-cracked

使用go语言运行

package main

import (
    "bytes"
    "encoding/binary"
    "fmt"
    "math/rand"
    "time"
)

const (
    rounds    = 12
    roundKeys = 2 * (rounds + 1)
)

func main() {
    rand.Seed(time.Now().UnixNano())

    name := "charles"

    fmt.Println("name:", name, "    key:", crack(name))
}

func crack(text string) string {

    name := []byte(text)
    length := len(name) + 4
    padded := ((-length) & (8 - 1)) + length
    bs := make([]byte, 4)
    binary.BigEndian.PutUint32(bs, uint32(len(name)))
    buff := bytes.Buffer{}
    buff.Write(bs)
    buff.Write(name)

    var ckName int64 = 0x7a21c951691cd470
    var ckKey int64 = -5408575981733630035
    ck := newCkCipher(ckName)
    outBuff := bytes.Buffer{}

    for i := 0; i < padded; i += 8 {
        bf := buff.Bytes()[i : i+8]
        buf := bytes.NewBuffer(bf)
        var nowVar int64
        if err := binary.Read(buf, binary.BigEndian, &nowVar); err != nil {
            panic(err)
        }

        dd := ck.encrypt(nowVar)

        outBuff.WriteByte(byte(dd >> 56))
        outBuff.WriteByte(byte(dd >> 48))
        outBuff.WriteByte(byte(dd >> 40))
        outBuff.WriteByte(byte(dd >> 32))
        outBuff.WriteByte(byte(dd >> 24))
        outBuff.WriteByte(byte(dd >> 16))
        outBuff.WriteByte(byte(dd >> 8))
        outBuff.WriteByte(byte(dd))

    }
    var n int32
    for _, b := range outBuff.Bytes() {
        n = rotateLeft(n^int32(int8(b)), 0x3)
    }
    prefix:= n ^ 0x54882f8a
    suffix:=rand.Int31()
    in := int64(prefix) << 32
    s := int64(suffix)
    switch suffix >> 16 {
    case 0x0401:
    case 0x0402:
    case 0x0403:
        in |= s
        break
    default:
        in |= 0x01000000 | (s & 0xffffff)
        break
    }

    out := newCkCipher(ckKey).decrypt(in)

    var n2 int64
    for i := 56; i >= 0; i -= 8 {
        n2 ^= int64((uint64(in) >> i) & 0xff)
    }

    vv := int32(n2 & 0xff)
    if vv < 0 {
        vv = -vv
    }
    return fmt.Sprintf("%02x%016x", vv, uint64(out))
}


type ckCipher struct {
    rk [roundKeys]int32
}

func newCkCipher(ckKey int64) ckCipher {
    ck := ckCipher{}

    var ld [2]int32
    ld[0] = int32(ckKey)
    ld[1] = int32(uint64(ckKey) >> 32)

    ck.rk[0] = -1209970333
    for i := 1; i < roundKeys; i++ {
        ck.rk[i] = ck.rk[i-1] + -1640531527
    }
    var a, b int32
    var i, j int

    for k := 0; k < 3*roundKeys; k++ {
        ck.rk[i] = rotateLeft(ck.rk[i]+(a+b), 3)
        a = ck.rk[i]
        ld[j] = rotateLeft(ld[j]+(a+b), a+b)
        b = ld[j]
        i = (i + 1) % roundKeys
        j = (j + 1) % 2
    }
    return ck
}

func (ck ckCipher) encrypt(in int64) int64 {
    a := int32(in) + ck.rk[0]
    b := int32(uint64(in)>>32) + ck.rk[1]
    for r := 1; r <= rounds; r++ {
        a = rotateLeft(a^b, b) + ck.rk[2*r]
        b = rotateLeft(b^a, a) + ck.rk[2*r+1]
    }
    return pkLong(a, b)
}

func (ck ckCipher) decrypt(in int64) int64 {
    a := int32(in)
    b := int32(uint64(in) >> 32)
    for i := rounds; i > 0; i-- {
        b = rotateRight(b-ck.rk[2*i+1], a) ^ a
        a = rotateRight(a-ck.rk[2*i], b) ^ b
    }
    b -= ck.rk[1]
    a -= ck.rk[0]
    return pkLong(a, b)
}

func rotateLeft(x int32, y int32) int32 {
    return int32(x<<(y&(32-1))) | int32(uint32(x)>>(32-(y&(32-1))))
}

func rotateRight(x int32, y int32) int32 {
    return int32(uint32(x)>>(y&(32-1))) | int32(x<<(32-(y&(32-1))))
}

func pkLong(a int32, b int32) int64 {
    return (int64(a) & 0xffffffff) | (int64(b) << 32)
}