lea.go

package lea

import (
    "fmt"
    "crypto/cipher"
)

const BlockSize = 16

type KeySizeError int

func (k KeySizeError) Error() string {
    return fmt.Sprintf("cryptobin/lea: invalid key size %d", int(k))
}

type leaCipher struct {
    round uint8
    rk    [192]uint32
}

// NewCipher creates and returns a new cipher.Block.
// The key argument should be the LEA key,
// either 16, 24, or 32 bytes to select LEA-128, LEA-192, or LEA-256.
func NewCipher(key []byte) (cipher.Block, error) {
    c := new(leaCipher)

    k := len(key)
    switch k {
        case 16, 24, 32:
            break
        default:
            return nil, KeySizeError(k)
    }

    MemsetUint32(c.rk[:], 0)
    c.round = uint8(setKey(c.rk[:], key))

    return c, nil
}

func (this *leaCipher) BlockSize() int {
    return BlockSize
}

func (this *leaCipher) Encrypt(dst, src []byte) {
    if len(src) < BlockSize {
        panic(fmt.Sprintf("cryptobin/lea: invalid block size %d (src)", len(src)))
    }

    if len(dst) < BlockSize {
        panic(fmt.Sprintf("cryptobin/lea: invalid block size %d (dst)", len(dst)))
    }

    this.encrypt(dst, src)
}

func (this *leaCipher) Decrypt(dst, src []byte) {
    if len(src) < BlockSize {
        panic(fmt.Sprintf("cryptobin/lea: invalid block size %d (src)", len(src)))
    }

    if len(dst) < BlockSize {
        panic(fmt.Sprintf("cryptobin/lea: invalid block size %d (dst)", len(dst)))
    }

    this.decrypt(dst, src)
}

func (this *leaCipher) encrypt(dst, src []byte) {
    xx := bytesToUint32s(src)

    X0, X1, X2, X3 := xx[0], xx[1], xx[2], xx[3]

    X3 = rotr32((X2^this.rk[4])+(X3^this.rk[5]), 3)
    X2 = rotr32((X1^this.rk[2])+(X2^this.rk[3]), 5)
    X1 = rotl32((X0^this.rk[0])+(X1^this.rk[1]), 9)
    X0 = rotr32((X3^this.rk[10])+(X0^this.rk[11]), 3)
    X3 = rotr32((X2^this.rk[8])+(X3^this.rk[9]), 5)
    X2 = rotl32((X1^this.rk[6])+(X2^this.rk[7]), 9)
    X1 = rotr32((X0^this.rk[16])+(X1^this.rk[17]), 3)
    X0 = rotr32((X3^this.rk[14])+(X0^this.rk[15]), 5)
    X3 = rotl32((X2^this.rk[12])+(X3^this.rk[13]), 9)
    X2 = rotr32((X1^this.rk[22])+(X2^this.rk[23]), 3)
    X1 = rotr32((X0^this.rk[20])+(X1^this.rk[21]), 5)
    X0 = rotl32((X3^this.rk[18])+(X0^this.rk[19]), 9)

    X3 = rotr32((X2^this.rk[28])+(X3^this.rk[29]), 3)
    X2 = rotr32((X1^this.rk[26])+(X2^this.rk[27]), 5)
    X1 = rotl32((X0^this.rk[24])+(X1^this.rk[25]), 9)
    X0 = rotr32((X3^this.rk[34])+(X0^this.rk[35]), 3)
    X3 = rotr32((X2^this.rk[32])+(X3^this.rk[33]), 5)
    X2 = rotl32((X1^this.rk[30])+(X2^this.rk[31]), 9)
    X1 = rotr32((X0^this.rk[40])+(X1^this.rk[41]), 3)
    X0 = rotr32((X3^this.rk[38])+(X0^this.rk[39]), 5)
    X3 = rotl32((X2^this.rk[36])+(X3^this.rk[37]), 9)
    X2 = rotr32((X1^this.rk[46])+(X2^this.rk[47]), 3)
    X1 = rotr32((X0^this.rk[44])+(X1^this.rk[45]), 5)
    X0 = rotl32((X3^this.rk[42])+(X0^this.rk[43]), 9)

    X3 = rotr32((X2^this.rk[52])+(X3^this.rk[53]), 3)
    X2 = rotr32((X1^this.rk[50])+(X2^this.rk[51]), 5)
    X1 = rotl32((X0^this.rk[48])+(X1^this.rk[49]), 9)
    X0 = rotr32((X3^this.rk[58])+(X0^this.rk[59]), 3)
    X3 = rotr32((X2^this.rk[56])+(X3^this.rk[57]), 5)
    X2 = rotl32((X1^this.rk[54])+(X2^this.rk[55]), 9)
    X1 = rotr32((X0^this.rk[64])+(X1^this.rk[65]), 3)
    X0 = rotr32((X3^this.rk[62])+(X0^this.rk[63]), 5)
    X3 = rotl32((X2^this.rk[60])+(X3^this.rk[61]), 9)
    X2 = rotr32((X1^this.rk[70])+(X2^this.rk[71]), 3)
    X1 = rotr32((X0^this.rk[68])+(X1^this.rk[69]), 5)
    X0 = rotl32((X3^this.rk[66])+(X0^this.rk[67]), 9)

    X3 = rotr32((X2^this.rk[76])+(X3^this.rk[77]), 3)
    X2 = rotr32((X1^this.rk[74])+(X2^this.rk[75]), 5)
    X1 = rotl32((X0^this.rk[72])+(X1^this.rk[73]), 9)
    X0 = rotr32((X3^this.rk[82])+(X0^this.rk[83]), 3)
    X3 = rotr32((X2^this.rk[80])+(X3^this.rk[81]), 5)
    X2 = rotl32((X1^this.rk[78])+(X2^this.rk[79]), 9)
    X1 = rotr32((X0^this.rk[88])+(X1^this.rk[89]), 3)
    X0 = rotr32((X3^this.rk[86])+(X0^this.rk[87]), 5)
    X3 = rotl32((X2^this.rk[84])+(X3^this.rk[85]), 9)
    X2 = rotr32((X1^this.rk[94])+(X2^this.rk[95]), 3)
    X1 = rotr32((X0^this.rk[92])+(X1^this.rk[93]), 5)
    X0 = rotl32((X3^this.rk[90])+(X0^this.rk[91]), 9)

    X3 = rotr32((X2^this.rk[100])+(X3^this.rk[101]), 3)
    X2 = rotr32((X1^this.rk[98])+(X2^this.rk[99]), 5)
    X1 = rotl32((X0^this.rk[96])+(X1^this.rk[97]), 9)
    X0 = rotr32((X3^this.rk[106])+(X0^this.rk[107]), 3)
    X3 = rotr32((X2^this.rk[104])+(X3^this.rk[105]), 5)
    X2 = rotl32((X1^this.rk[102])+(X2^this.rk[103]), 9)
    X1 = rotr32((X0^this.rk[112])+(X1^this.rk[113]), 3)
    X0 = rotr32((X3^this.rk[110])+(X0^this.rk[111]), 5)
    X3 = rotl32((X2^this.rk[108])+(X3^this.rk[109]), 9)
    X2 = rotr32((X1^this.rk[118])+(X2^this.rk[119]), 3)
    X1 = rotr32((X0^this.rk[116])+(X1^this.rk[117]), 5)
    X0 = rotl32((X3^this.rk[114])+(X0^this.rk[115]), 9)

    X3 = rotr32((X2^this.rk[124])+(X3^this.rk[125]), 3)
    X2 = rotr32((X1^this.rk[122])+(X2^this.rk[123]), 5)
    X1 = rotl32((X0^this.rk[120])+(X1^this.rk[121]), 9)
    X0 = rotr32((X3^this.rk[130])+(X0^this.rk[131]), 3)
    X3 = rotr32((X2^this.rk[128])+(X3^this.rk[129]), 5)
    X2 = rotl32((X1^this.rk[126])+(X2^this.rk[127]), 9)
    X1 = rotr32((X0^this.rk[136])+(X1^this.rk[137]), 3)
    X0 = rotr32((X3^this.rk[134])+(X0^this.rk[135]), 5)
    X3 = rotl32((X2^this.rk[132])+(X3^this.rk[133]), 9)
    X2 = rotr32((X1^this.rk[142])+(X2^this.rk[143]), 3)
    X1 = rotr32((X0^this.rk[140])+(X1^this.rk[141]), 5)
    X0 = rotl32((X3^this.rk[138])+(X0^this.rk[139]), 9)

    if this.round > 24 {
        X3 = rotr32((X2^this.rk[148])+(X3^this.rk[149]), 3)
        X2 = rotr32((X1^this.rk[146])+(X2^this.rk[147]), 5)
        X1 = rotl32((X0^this.rk[144])+(X1^this.rk[145]), 9)
        X0 = rotr32((X3^this.rk[154])+(X0^this.rk[155]), 3)
        X3 = rotr32((X2^this.rk[152])+(X3^this.rk[153]), 5)
        X2 = rotl32((X1^this.rk[150])+(X2^this.rk[151]), 9)
        X1 = rotr32((X0^this.rk[160])+(X1^this.rk[161]), 3)
        X0 = rotr32((X3^this.rk[158])+(X0^this.rk[159]), 5)
        X3 = rotl32((X2^this.rk[156])+(X3^this.rk[157]), 9)
        X2 = rotr32((X1^this.rk[166])+(X2^this.rk[167]), 3)
        X1 = rotr32((X0^this.rk[164])+(X1^this.rk[165]), 5)
        X0 = rotl32((X3^this.rk[162])+(X0^this.rk[163]), 9)
    }

    if this.round > 28 {
        X3 = rotr32((X2^this.rk[172])+(X3^this.rk[173]), 3)
        X2 = rotr32((X1^this.rk[170])+(X2^this.rk[171]), 5)
        X1 = rotl32((X0^this.rk[168])+(X1^this.rk[169]), 9)
        X0 = rotr32((X3^this.rk[178])+(X0^this.rk[179]), 3)
        X3 = rotr32((X2^this.rk[176])+(X3^this.rk[177]), 5)
        X2 = rotl32((X1^this.rk[174])+(X2^this.rk[175]), 9)
        X1 = rotr32((X0^this.rk[184])+(X1^this.rk[185]), 3)
        X0 = rotr32((X3^this.rk[182])+(X0^this.rk[183]), 5)
        X3 = rotl32((X2^this.rk[180])+(X3^this.rk[181]), 9)
        X2 = rotr32((X1^this.rk[190])+(X2^this.rk[191]), 3)
        X1 = rotr32((X0^this.rk[188])+(X1^this.rk[189]), 5)
        X0 = rotl32((X3^this.rk[186])+(X0^this.rk[187]), 9)
    }

    dstBytes := Uint32sToBytes([4]uint32{X0, X1, X2, X3})

    copy(dst, dstBytes[:])
}

func (this *leaCipher) decrypt(dst, src []byte) {
    xx := bytesToUint32s(src)

    X0, X1, X2, X3 := xx[0], xx[1], xx[2], xx[3]

    if this.round > 28 {
        X0 = (rotr32(X0, 9) - (X3 ^ this.rk[186])) ^ this.rk[187]
        X1 = (rotl32(X1, 5) - (X0 ^ this.rk[188])) ^ this.rk[189]
        X2 = (rotl32(X2, 3) - (X1 ^ this.rk[190])) ^ this.rk[191]
        X3 = (rotr32(X3, 9) - (X2 ^ this.rk[180])) ^ this.rk[181]
        X0 = (rotl32(X0, 5) - (X3 ^ this.rk[182])) ^ this.rk[183]
        X1 = (rotl32(X1, 3) - (X0 ^ this.rk[184])) ^ this.rk[185]
        X2 = (rotr32(X2, 9) - (X1 ^ this.rk[174])) ^ this.rk[175]
        X3 = (rotl32(X3, 5) - (X2 ^ this.rk[176])) ^ this.rk[177]
        X0 = (rotl32(X0, 3) - (X3 ^ this.rk[178])) ^ this.rk[179]
        X1 = (rotr32(X1, 9) - (X0 ^ this.rk[168])) ^ this.rk[169]
        X2 = (rotl32(X2, 5) - (X1 ^ this.rk[170])) ^ this.rk[171]
        X3 = (rotl32(X3, 3) - (X2 ^ this.rk[172])) ^ this.rk[173]
    }

    if this.round > 24 {
        X0 = (rotr32(X0, 9) - (X3 ^ this.rk[162])) ^ this.rk[163]
        X1 = (rotl32(X1, 5) - (X0 ^ this.rk[164])) ^ this.rk[165]
        X2 = (rotl32(X2, 3) - (X1 ^ this.rk[166])) ^ this.rk[167]
        X3 = (rotr32(X3, 9) - (X2 ^ this.rk[156])) ^ this.rk[157]
        X0 = (rotl32(X0, 5) - (X3 ^ this.rk[158])) ^ this.rk[159]
        X1 = (rotl32(X1, 3) - (X0 ^ this.rk[160])) ^ this.rk[161]
        X2 = (rotr32(X2, 9) - (X1 ^ this.rk[150])) ^ this.rk[151]
        X3 = (rotl32(X3, 5) - (X2 ^ this.rk[152])) ^ this.rk[153]
        X0 = (rotl32(X0, 3) - (X3 ^ this.rk[154])) ^ this.rk[155]
        X1 = (rotr32(X1, 9) - (X0 ^ this.rk[144])) ^ this.rk[145]
        X2 = (rotl32(X2, 5) - (X1 ^ this.rk[146])) ^ this.rk[147]
        X3 = (rotl32(X3, 3) - (X2 ^ this.rk[148])) ^ this.rk[149]
    }

    X0 = (rotr32(X0, 9) - (X3 ^ this.rk[138])) ^ this.rk[139]
    X1 = (rotl32(X1, 5) - (X0 ^ this.rk[140])) ^ this.rk[141]
    X2 = (rotl32(X2, 3) - (X1 ^ this.rk[142])) ^ this.rk[143]
    X3 = (rotr32(X3, 9) - (X2 ^ this.rk[132])) ^ this.rk[133]
    X0 = (rotl32(X0, 5) - (X3 ^ this.rk[134])) ^ this.rk[135]
    X1 = (rotl32(X1, 3) - (X0 ^ this.rk[136])) ^ this.rk[137]
    X2 = (rotr32(X2, 9) - (X1 ^ this.rk[126])) ^ this.rk[127]
    X3 = (rotl32(X3, 5) - (X2 ^ this.rk[128])) ^ this.rk[129]
    X0 = (rotl32(X0, 3) - (X3 ^ this.rk[130])) ^ this.rk[131]
    X1 = (rotr32(X1, 9) - (X0 ^ this.rk[120])) ^ this.rk[121]
    X2 = (rotl32(X2, 5) - (X1 ^ this.rk[122])) ^ this.rk[123]
    X3 = (rotl32(X3, 3) - (X2 ^ this.rk[124])) ^ this.rk[125]

    X0 = (rotr32(X0, 9) - (X3 ^ this.rk[114])) ^ this.rk[115]
    X1 = (rotl32(X1, 5) - (X0 ^ this.rk[116])) ^ this.rk[117]
    X2 = (rotl32(X2, 3) - (X1 ^ this.rk[118])) ^ this.rk[119]
    X3 = (rotr32(X3, 9) - (X2 ^ this.rk[108])) ^ this.rk[109]
    X0 = (rotl32(X0, 5) - (X3 ^ this.rk[110])) ^ this.rk[111]
    X1 = (rotl32(X1, 3) - (X0 ^ this.rk[112])) ^ this.rk[113]
    X2 = (rotr32(X2, 9) - (X1 ^ this.rk[102])) ^ this.rk[103]
    X3 = (rotl32(X3, 5) - (X2 ^ this.rk[104])) ^ this.rk[105]
    X0 = (rotl32(X0, 3) - (X3 ^ this.rk[106])) ^ this.rk[107]
    X1 = (rotr32(X1, 9) - (X0 ^ this.rk[96])) ^ this.rk[97]
    X2 = (rotl32(X2, 5) - (X1 ^ this.rk[98])) ^ this.rk[99]
    X3 = (rotl32(X3, 3) - (X2 ^ this.rk[100])) ^ this.rk[101]

    X0 = (rotr32(X0, 9) - (X3 ^ this.rk[90])) ^ this.rk[91]
    X1 = (rotl32(X1, 5) - (X0 ^ this.rk[92])) ^ this.rk[93]
    X2 = (rotl32(X2, 3) - (X1 ^ this.rk[94])) ^ this.rk[95]
    X3 = (rotr32(X3, 9) - (X2 ^ this.rk[84])) ^ this.rk[85]
    X0 = (rotl32(X0, 5) - (X3 ^ this.rk[86])) ^ this.rk[87]
    X1 = (rotl32(X1, 3) - (X0 ^ this.rk[88])) ^ this.rk[89]
    X2 = (rotr32(X2, 9) - (X1 ^ this.rk[78])) ^ this.rk[79]
    X3 = (rotl32(X3, 5) - (X2 ^ this.rk[80])) ^ this.rk[81]
    X0 = (rotl32(X0, 3) - (X3 ^ this.rk[82])) ^ this.rk[83]
    X1 = (rotr32(X1, 9) - (X0 ^ this.rk[72])) ^ this.rk[73]
    X2 = (rotl32(X2, 5) - (X1 ^ this.rk[74])) ^ this.rk[75]
    X3 = (rotl32(X3, 3) - (X2 ^ this.rk[76])) ^ this.rk[77]

    X0 = (rotr32(X0, 9) - (X3 ^ this.rk[66])) ^ this.rk[67]
    X1 = (rotl32(X1, 5) - (X0 ^ this.rk[68])) ^ this.rk[69]
    X2 = (rotl32(X2, 3) - (X1 ^ this.rk[70])) ^ this.rk[71]
    X3 = (rotr32(X3, 9) - (X2 ^ this.rk[60])) ^ this.rk[61]
    X0 = (rotl32(X0, 5) - (X3 ^ this.rk[62])) ^ this.rk[63]
    X1 = (rotl32(X1, 3) - (X0 ^ this.rk[64])) ^ this.rk[65]
    X2 = (rotr32(X2, 9) - (X1 ^ this.rk[54])) ^ this.rk[55]
    X3 = (rotl32(X3, 5) - (X2 ^ this.rk[56])) ^ this.rk[57]
    X0 = (rotl32(X0, 3) - (X3 ^ this.rk[58])) ^ this.rk[59]
    X1 = (rotr32(X1, 9) - (X0 ^ this.rk[48])) ^ this.rk[49]
    X2 = (rotl32(X2, 5) - (X1 ^ this.rk[50])) ^ this.rk[51]
    X3 = (rotl32(X3, 3) - (X2 ^ this.rk[52])) ^ this.rk[53]

    X0 = (rotr32(X0, 9) - (X3 ^ this.rk[42])) ^ this.rk[43]
    X1 = (rotl32(X1, 5) - (X0 ^ this.rk[44])) ^ this.rk[45]
    X2 = (rotl32(X2, 3) - (X1 ^ this.rk[46])) ^ this.rk[47]
    X3 = (rotr32(X3, 9) - (X2 ^ this.rk[36])) ^ this.rk[37]
    X0 = (rotl32(X0, 5) - (X3 ^ this.rk[38])) ^ this.rk[39]
    X1 = (rotl32(X1, 3) - (X0 ^ this.rk[40])) ^ this.rk[41]
    X2 = (rotr32(X2, 9) - (X1 ^ this.rk[30])) ^ this.rk[31]
    X3 = (rotl32(X3, 5) - (X2 ^ this.rk[32])) ^ this.rk[33]
    X0 = (rotl32(X0, 3) - (X3 ^ this.rk[34])) ^ this.rk[35]
    X1 = (rotr32(X1, 9) - (X0 ^ this.rk[24])) ^ this.rk[25]
    X2 = (rotl32(X2, 5) - (X1 ^ this.rk[26])) ^ this.rk[27]
    X3 = (rotl32(X3, 3) - (X2 ^ this.rk[28])) ^ this.rk[29]

    X0 = (rotr32(X0, 9) - (X3 ^ this.rk[18])) ^ this.rk[19]
    X1 = (rotl32(X1, 5) - (X0 ^ this.rk[20])) ^ this.rk[21]
    X2 = (rotl32(X2, 3) - (X1 ^ this.rk[22])) ^ this.rk[23]
    X3 = (rotr32(X3, 9) - (X2 ^ this.rk[12])) ^ this.rk[13]
    X0 = (rotl32(X0, 5) - (X3 ^ this.rk[14])) ^ this.rk[15]
    X1 = (rotl32(X1, 3) - (X0 ^ this.rk[16])) ^ this.rk[17]
    X2 = (rotr32(X2, 9) - (X1 ^ this.rk[6])) ^ this.rk[7]
    X3 = (rotl32(X3, 5) - (X2 ^ this.rk[8])) ^ this.rk[9]
    X0 = (rotl32(X0, 3) - (X3 ^ this.rk[10])) ^ this.rk[11]
    X1 = (rotr32(X1, 9) - (X0 ^ this.rk[0])) ^ this.rk[1]
    X2 = (rotl32(X2, 5) - (X1 ^ this.rk[2])) ^ this.rk[3]
    X3 = (rotl32(X3, 3) - (X2 ^ this.rk[4])) ^ this.rk[5]

    dstBytes := Uint32sToBytes([4]uint32{X0, X1, X2, X3})

    copy(dst, dstBytes[:])
}

func setKey(rk []uint32, key []byte) int {
    keyLen := len(key)

    switch keyLen {
        case 16:
            rk[0] = rotl32(bytesToUint32(key[4*0:])+delta[0][0], 1)
            rk[6] = rotl32(rk[0]+delta[1][1], 1)
            rk[12] = rotl32(rk[6]+delta[2][2], 1)
            rk[18] = rotl32(rk[12]+delta[3][3], 1)
            rk[24] = rotl32(rk[18]+delta[0][4], 1)
            rk[30] = rotl32(rk[24]+delta[1][5], 1)
            rk[36] = rotl32(rk[30]+delta[2][6], 1)
            rk[42] = rotl32(rk[36]+delta[3][7], 1)
            rk[48] = rotl32(rk[42]+delta[0][8], 1)
            rk[54] = rotl32(rk[48]+delta[1][9], 1)
            rk[60] = rotl32(rk[54]+delta[2][10], 1)
            rk[66] = rotl32(rk[60]+delta[3][11], 1)
            rk[72] = rotl32(rk[66]+delta[0][12], 1)
            rk[78] = rotl32(rk[72]+delta[1][13], 1)
            rk[84] = rotl32(rk[78]+delta[2][14], 1)
            rk[90] = rotl32(rk[84]+delta[3][15], 1)
            rk[96] = rotl32(rk[90]+delta[0][16], 1)
            rk[102] = rotl32(rk[96]+delta[1][17], 1)
            rk[108] = rotl32(rk[102]+delta[2][18], 1)
            rk[114] = rotl32(rk[108]+delta[3][19], 1)
            rk[120] = rotl32(rk[114]+delta[0][20], 1)
            rk[126] = rotl32(rk[120]+delta[1][21], 1)
            rk[132] = rotl32(rk[126]+delta[2][22], 1)
            rk[138] = rotl32(rk[132]+delta[3][23], 1)

            /**
            rk[  1] = rk[  3] = rk[  5] = rotl32(loadU32(mk,1) + delta[0][ 1], 3);
            rk[  7] = rk[  9] = rk[ 11] = rotl32(rk[  1] + delta[1][ 2], 3);
            rk[ 13] = rk[ 15] = rk[ 17] = rotl32(rk[  7] + delta[2][ 3], 3);
            rk[ 19] = rk[ 21] = rk[ 23] = rotl32(rk[ 13] + delta[3][ 4], 3);
            rk[ 25] = rk[ 27] = rk[ 29] = rotl32(rk[ 19] + delta[0][ 5], 3);
            rk[ 31] = rk[ 33] = rk[ 35] = rotl32(rk[ 25] + delta[1][ 6], 3);
            rk[ 37] = rk[ 39] = rk[ 41] = rotl32(rk[ 31] + delta[2][ 7], 3);
            rk[ 43] = rk[ 45] = rk[ 47] = rotl32(rk[ 37] + delta[3][ 8], 3);
            rk[ 49] = rk[ 51] = rk[ 53] = rotl32(rk[ 43] + delta[0][ 9], 3);
            rk[ 55] = rk[ 57] = rk[ 59] = rotl32(rk[ 49] + delta[1][10], 3);
            rk[ 61] = rk[ 63] = rk[ 65] = rotl32(rk[ 55] + delta[2][11], 3);
            rk[ 67] = rk[ 69] = rk[ 71] = rotl32(rk[ 61] + delta[3][12], 3);
            rk[ 73] = rk[ 75] = rk[ 77] = rotl32(rk[ 67] + delta[0][13], 3);
            rk[ 79] = rk[ 81] = rk[ 83] = rotl32(rk[ 73] + delta[1][14], 3);
            rk[ 85] = rk[ 87] = rk[ 89] = rotl32(rk[ 79] + delta[2][15], 3);
            rk[ 91] = rk[ 93] = rk[ 95] = rotl32(rk[ 85] + delta[3][16], 3);
            rk[ 97] = rk[ 99] = rk[101] = rotl32(rk[ 91] + delta[0][17], 3);
            rk[103] = rk[105] = rk[107] = rotl32(rk[ 97] + delta[1][18], 3);
            rk[109] = rk[111] = rk[113] = rotl32(rk[103] + delta[2][19], 3);
            rk[115] = rk[117] = rk[119] = rotl32(rk[109] + delta[3][20], 3);
            rk[121] = rk[123] = rk[125] = rotl32(rk[115] + delta[0][21], 3);
            rk[127] = rk[129] = rk[131] = rotl32(rk[121] + delta[1][22], 3);
            rk[133] = rk[135] = rk[137] = rotl32(rk[127] + delta[2][23], 3);
            rk[139] = rk[141] = rk[143] = rotl32(rk[133] + delta[3][24], 3);
            */
            tmp := rotl32(bytesToUint32(key[4*1:])+delta[0][1], 3)
            rk[1] = tmp
            rk[3] = tmp
            rk[5] = tmp

            for i := 1; i <= 23; i++ {
                tmp = rotl32(rk[(i-1)*6+1]+delta[i%4][i+1], 3)

                rk[i*6+1] = tmp
                rk[i*6+3] = tmp
                rk[i*6+5] = tmp
            }

            rk[2] = rotl32(bytesToUint32(key[4*2:])+delta[0][2], 6)
            rk[8] = rotl32(rk[2]+delta[1][3], 6)
            rk[14] = rotl32(rk[8]+delta[2][4], 6)
            rk[20] = rotl32(rk[14]+delta[3][5], 6)
            rk[26] = rotl32(rk[20]+delta[0][6], 6)
            rk[32] = rotl32(rk[26]+delta[1][7], 6)
            rk[38] = rotl32(rk[32]+delta[2][8], 6)
            rk[44] = rotl32(rk[38]+delta[3][9], 6)
            rk[50] = rotl32(rk[44]+delta[0][10], 6)
            rk[56] = rotl32(rk[50]+delta[1][11], 6)
            rk[62] = rotl32(rk[56]+delta[2][12], 6)
            rk[68] = rotl32(rk[62]+delta[3][13], 6)
            rk[74] = rotl32(rk[68]+delta[0][14], 6)
            rk[80] = rotl32(rk[74]+delta[1][15], 6)
            rk[86] = rotl32(rk[80]+delta[2][16], 6)
            rk[92] = rotl32(rk[86]+delta[3][17], 6)
            rk[98] = rotl32(rk[92]+delta[0][18], 6)
            rk[104] = rotl32(rk[98]+delta[1][19], 6)
            rk[110] = rotl32(rk[104]+delta[2][20], 6)
            rk[116] = rotl32(rk[110]+delta[3][21], 6)
            rk[122] = rotl32(rk[116]+delta[0][22], 6)
            rk[128] = rotl32(rk[122]+delta[1][23], 6)
            rk[134] = rotl32(rk[128]+delta[2][24], 6)
            rk[140] = rotl32(rk[134]+delta[3][25], 6)

            rk[4] = rotl32(bytesToUint32(key[4*3:])+delta[0][3], 11)
            rk[10] = rotl32(rk[4]+delta[1][4], 11)
            rk[16] = rotl32(rk[10]+delta[2][5], 11)
            rk[22] = rotl32(rk[16]+delta[3][6], 11)
            rk[28] = rotl32(rk[22]+delta[0][7], 11)
            rk[34] = rotl32(rk[28]+delta[1][8], 11)
            rk[40] = rotl32(rk[34]+delta[2][9], 11)
            rk[46] = rotl32(rk[40]+delta[3][10], 11)
            rk[52] = rotl32(rk[46]+delta[0][11], 11)
            rk[58] = rotl32(rk[52]+delta[1][12], 11)
            rk[64] = rotl32(rk[58]+delta[2][13], 11)
            rk[70] = rotl32(rk[64]+delta[3][14], 11)
            rk[76] = rotl32(rk[70]+delta[0][15], 11)
            rk[82] = rotl32(rk[76]+delta[1][16], 11)
            rk[88] = rotl32(rk[82]+delta[2][17], 11)
            rk[94] = rotl32(rk[88]+delta[3][18], 11)
            rk[100] = rotl32(rk[94]+delta[0][19], 11)
            rk[106] = rotl32(rk[100]+delta[1][20], 11)
            rk[112] = rotl32(rk[106]+delta[2][21], 11)
            rk[118] = rotl32(rk[112]+delta[3][22], 11)
            rk[124] = rotl32(rk[118]+delta[0][23], 11)
            rk[130] = rotl32(rk[124]+delta[1][24], 11)
            rk[136] = rotl32(rk[130]+delta[2][25], 11)
            rk[142] = rotl32(rk[136]+delta[3][26], 11)

        case 24:
            rk[0] = rotl32(bytesToUint32(key[4*0:])+delta[0][0], 1)
            rk[6] = rotl32(rk[0]+delta[1][1], 1)
            rk[12] = rotl32(rk[6]+delta[2][2], 1)
            rk[18] = rotl32(rk[12]+delta[3][3], 1)
            rk[24] = rotl32(rk[18]+delta[4][4], 1)
            rk[30] = rotl32(rk[24]+delta[5][5], 1)
            rk[36] = rotl32(rk[30]+delta[0][6], 1)
            rk[42] = rotl32(rk[36]+delta[1][7], 1)
            rk[48] = rotl32(rk[42]+delta[2][8], 1)
            rk[54] = rotl32(rk[48]+delta[3][9], 1)
            rk[60] = rotl32(rk[54]+delta[4][10], 1)
            rk[66] = rotl32(rk[60]+delta[5][11], 1)
            rk[72] = rotl32(rk[66]+delta[0][12], 1)
            rk[78] = rotl32(rk[72]+delta[1][13], 1)
            rk[84] = rotl32(rk[78]+delta[2][14], 1)
            rk[90] = rotl32(rk[84]+delta[3][15], 1)
            rk[96] = rotl32(rk[90]+delta[4][16], 1)
            rk[102] = rotl32(rk[96]+delta[5][17], 1)
            rk[108] = rotl32(rk[102]+delta[0][18], 1)
            rk[114] = rotl32(rk[108]+delta[1][19], 1)
            rk[120] = rotl32(rk[114]+delta[2][20], 1)
            rk[126] = rotl32(rk[120]+delta[3][21], 1)
            rk[132] = rotl32(rk[126]+delta[4][22], 1)
            rk[138] = rotl32(rk[132]+delta[5][23], 1)
            rk[144] = rotl32(rk[138]+delta[0][24], 1)
            rk[150] = rotl32(rk[144]+delta[1][25], 1)
            rk[156] = rotl32(rk[150]+delta[2][26], 1)
            rk[162] = rotl32(rk[156]+delta[3][27], 1)

            rk[1] = rotl32(bytesToUint32(key[4*1:])+delta[0][1], 3)
            rk[7] = rotl32(rk[1]+delta[1][2], 3)
            rk[13] = rotl32(rk[7]+delta[2][3], 3)
            rk[19] = rotl32(rk[13]+delta[3][4], 3)
            rk[25] = rotl32(rk[19]+delta[4][5], 3)
            rk[31] = rotl32(rk[25]+delta[5][6], 3)
            rk[37] = rotl32(rk[31]+delta[0][7], 3)
            rk[43] = rotl32(rk[37]+delta[1][8], 3)
            rk[49] = rotl32(rk[43]+delta[2][9], 3)
            rk[55] = rotl32(rk[49]+delta[3][10], 3)
            rk[61] = rotl32(rk[55]+delta[4][11], 3)
            rk[67] = rotl32(rk[61]+delta[5][12], 3)
            rk[73] = rotl32(rk[67]+delta[0][13], 3)
            rk[79] = rotl32(rk[73]+delta[1][14], 3)
            rk[85] = rotl32(rk[79]+delta[2][15], 3)
            rk[91] = rotl32(rk[85]+delta[3][16], 3)
            rk[97] = rotl32(rk[91]+delta[4][17], 3)
            rk[103] = rotl32(rk[97]+delta[5][18], 3)
            rk[109] = rotl32(rk[103]+delta[0][19], 3)
            rk[115] = rotl32(rk[109]+delta[1][20], 3)
            rk[121] = rotl32(rk[115]+delta[2][21], 3)
            rk[127] = rotl32(rk[121]+delta[3][22], 3)
            rk[133] = rotl32(rk[127]+delta[4][23], 3)
            rk[139] = rotl32(rk[133]+delta[5][24], 3)
            rk[145] = rotl32(rk[139]+delta[0][25], 3)
            rk[151] = rotl32(rk[145]+delta[1][26], 3)
            rk[157] = rotl32(rk[151]+delta[2][27], 3)
            rk[163] = rotl32(rk[157]+delta[3][28], 3)

            rk[2] = rotl32(bytesToUint32(key[4*2:])+delta[0][2], 6)
            rk[8] = rotl32(rk[2]+delta[1][3], 6)
            rk[14] = rotl32(rk[8]+delta[2][4], 6)
            rk[20] = rotl32(rk[14]+delta[3][5], 6)
            rk[26] = rotl32(rk[20]+delta[4][6], 6)
            rk[32] = rotl32(rk[26]+delta[5][7], 6)
            rk[38] = rotl32(rk[32]+delta[0][8], 6)
            rk[44] = rotl32(rk[38]+delta[1][9], 6)
            rk[50] = rotl32(rk[44]+delta[2][10], 6)
            rk[56] = rotl32(rk[50]+delta[3][11], 6)
            rk[62] = rotl32(rk[56]+delta[4][12], 6)
            rk[68] = rotl32(rk[62]+delta[5][13], 6)
            rk[74] = rotl32(rk[68]+delta[0][14], 6)
            rk[80] = rotl32(rk[74]+delta[1][15], 6)
            rk[86] = rotl32(rk[80]+delta[2][16], 6)
            rk[92] = rotl32(rk[86]+delta[3][17], 6)
            rk[98] = rotl32(rk[92]+delta[4][18], 6)
            rk[104] = rotl32(rk[98]+delta[5][19], 6)
            rk[110] = rotl32(rk[104]+delta[0][20], 6)
            rk[116] = rotl32(rk[110]+delta[1][21], 6)
            rk[122] = rotl32(rk[116]+delta[2][22], 6)
            rk[128] = rotl32(rk[122]+delta[3][23], 6)
            rk[134] = rotl32(rk[128]+delta[4][24], 6)
            rk[140] = rotl32(rk[134]+delta[5][25], 6)
            rk[146] = rotl32(rk[140]+delta[0][26], 6)
            rk[152] = rotl32(rk[146]+delta[1][27], 6)
            rk[158] = rotl32(rk[152]+delta[2][28], 6)
            rk[164] = rotl32(rk[158]+delta[3][29], 6)

            rk[3] = rotl32(bytesToUint32(key[4*3:])+delta[0][3], 11)
            rk[9] = rotl32(rk[3]+delta[1][4], 11)
            rk[15] = rotl32(rk[9]+delta[2][5], 11)
            rk[21] = rotl32(rk[15]+delta[3][6], 11)
            rk[27] = rotl32(rk[21]+delta[4][7], 11)
            rk[33] = rotl32(rk[27]+delta[5][8], 11)
            rk[39] = rotl32(rk[33]+delta[0][9], 11)
            rk[45] = rotl32(rk[39]+delta[1][10], 11)
            rk[51] = rotl32(rk[45]+delta[2][11], 11)
            rk[57] = rotl32(rk[51]+delta[3][12], 11)
            rk[63] = rotl32(rk[57]+delta[4][13], 11)
            rk[69] = rotl32(rk[63]+delta[5][14], 11)
            rk[75] = rotl32(rk[69]+delta[0][15], 11)
            rk[81] = rotl32(rk[75]+delta[1][16], 11)
            rk[87] = rotl32(rk[81]+delta[2][17], 11)
            rk[93] = rotl32(rk[87]+delta[3][18], 11)
            rk[99] = rotl32(rk[93]+delta[4][19], 11)
            rk[105] = rotl32(rk[99]+delta[5][20], 11)
            rk[111] = rotl32(rk[105]+delta[0][21], 11)
            rk[117] = rotl32(rk[111]+delta[1][22], 11)
            rk[123] = rotl32(rk[117]+delta[2][23], 11)
            rk[129] = rotl32(rk[123]+delta[3][24], 11)
            rk[135] = rotl32(rk[129]+delta[4][25], 11)
            rk[141] = rotl32(rk[135]+delta[5][26], 11)
            rk[147] = rotl32(rk[141]+delta[0][27], 11)
            rk[153] = rotl32(rk[147]+delta[1][28], 11)
            rk[159] = rotl32(rk[153]+delta[2][29], 11)
            rk[165] = rotl32(rk[159]+delta[3][30], 11)

            rk[4] = rotl32(bytesToUint32(key[4*4:])+delta[0][4], 13)
            rk[10] = rotl32(rk[4]+delta[1][5], 13)
            rk[16] = rotl32(rk[10]+delta[2][6], 13)
            rk[22] = rotl32(rk[16]+delta[3][7], 13)
            rk[28] = rotl32(rk[22]+delta[4][8], 13)
            rk[34] = rotl32(rk[28]+delta[5][9], 13)
            rk[40] = rotl32(rk[34]+delta[0][10], 13)
            rk[46] = rotl32(rk[40]+delta[1][11], 13)
            rk[52] = rotl32(rk[46]+delta[2][12], 13)
            rk[58] = rotl32(rk[52]+delta[3][13], 13)
            rk[64] = rotl32(rk[58]+delta[4][14], 13)
            rk[70] = rotl32(rk[64]+delta[5][15], 13)
            rk[76] = rotl32(rk[70]+delta[0][16], 13)
            rk[82] = rotl32(rk[76]+delta[1][17], 13)
            rk[88] = rotl32(rk[82]+delta[2][18], 13)
            rk[94] = rotl32(rk[88]+delta[3][19], 13)
            rk[100] = rotl32(rk[94]+delta[4][20], 13)
            rk[106] = rotl32(rk[100]+delta[5][21], 13)
            rk[112] = rotl32(rk[106]+delta[0][22], 13)
            rk[118] = rotl32(rk[112]+delta[1][23], 13)
            rk[124] = rotl32(rk[118]+delta[2][24], 13)
            rk[130] = rotl32(rk[124]+delta[3][25], 13)
            rk[136] = rotl32(rk[130]+delta[4][26], 13)
            rk[142] = rotl32(rk[136]+delta[5][27], 13)
            rk[148] = rotl32(rk[142]+delta[0][28], 13)
            rk[154] = rotl32(rk[148]+delta[1][29], 13)
            rk[160] = rotl32(rk[154]+delta[2][30], 13)
            rk[166] = rotl32(rk[160]+delta[3][31], 13)

            rk[5] = rotl32(bytesToUint32(key[4*5:])+delta[0][5], 17)
            rk[11] = rotl32(rk[5]+delta[1][6], 17)
            rk[17] = rotl32(rk[11]+delta[2][7], 17)
            rk[23] = rotl32(rk[17]+delta[3][8], 17)
            rk[29] = rotl32(rk[23]+delta[4][9], 17)
            rk[35] = rotl32(rk[29]+delta[5][10], 17)
            rk[41] = rotl32(rk[35]+delta[0][11], 17)
            rk[47] = rotl32(rk[41]+delta[1][12], 17)
            rk[53] = rotl32(rk[47]+delta[2][13], 17)
            rk[59] = rotl32(rk[53]+delta[3][14], 17)
            rk[65] = rotl32(rk[59]+delta[4][15], 17)
            rk[71] = rotl32(rk[65]+delta[5][16], 17)
            rk[77] = rotl32(rk[71]+delta[0][17], 17)
            rk[83] = rotl32(rk[77]+delta[1][18], 17)
            rk[89] = rotl32(rk[83]+delta[2][19], 17)
            rk[95] = rotl32(rk[89]+delta[3][20], 17)
            rk[101] = rotl32(rk[95]+delta[4][21], 17)
            rk[107] = rotl32(rk[101]+delta[5][22], 17)
            rk[113] = rotl32(rk[107]+delta[0][23], 17)
            rk[119] = rotl32(rk[113]+delta[1][24], 17)
            rk[125] = rotl32(rk[119]+delta[2][25], 17)
            rk[131] = rotl32(rk[125]+delta[3][26], 17)
            rk[137] = rotl32(rk[131]+delta[4][27], 17)
            rk[143] = rotl32(rk[137]+delta[5][28], 17)
            rk[149] = rotl32(rk[143]+delta[0][29], 17)
            rk[155] = rotl32(rk[149]+delta[1][30], 17)
            rk[161] = rotl32(rk[155]+delta[2][31], 17)
            rk[167] = rotl32(rk[161]+delta[3][0], 17)

        case 32:
            rk[0] = rotl32(bytesToUint32(key[4*0:])+delta[0][0], 1)
            rk[8] = rotl32(rk[0]+delta[1][3], 6)
            rk[16] = rotl32(rk[8]+delta[2][6], 13)
            rk[24] = rotl32(rk[16]+delta[4][4], 1)
            rk[32] = rotl32(rk[24]+delta[5][7], 6)
            rk[40] = rotl32(rk[32]+delta[6][10], 13)
            rk[48] = rotl32(rk[40]+delta[0][8], 1)
            rk[56] = rotl32(rk[48]+delta[1][11], 6)
            rk[64] = rotl32(rk[56]+delta[2][14], 13)
            rk[72] = rotl32(rk[64]+delta[4][12], 1)
            rk[80] = rotl32(rk[72]+delta[5][15], 6)
            rk[88] = rotl32(rk[80]+delta[6][18], 13)
            rk[96] = rotl32(rk[88]+delta[0][16], 1)
            rk[104] = rotl32(rk[96]+delta[1][19], 6)
            rk[112] = rotl32(rk[104]+delta[2][22], 13)
            rk[120] = rotl32(rk[112]+delta[4][20], 1)
            rk[128] = rotl32(rk[120]+delta[5][23], 6)
            rk[136] = rotl32(rk[128]+delta[6][26], 13)
            rk[144] = rotl32(rk[136]+delta[0][24], 1)
            rk[152] = rotl32(rk[144]+delta[1][27], 6)
            rk[160] = rotl32(rk[152]+delta[2][30], 13)
            rk[168] = rotl32(rk[160]+delta[4][28], 1)
            rk[176] = rotl32(rk[168]+delta[5][31], 6)
            rk[184] = rotl32(rk[176]+delta[6][2], 13)

            rk[1] = rotl32(bytesToUint32(key[4*1:])+delta[0][1], 3)
            rk[9] = rotl32(rk[1]+delta[1][4], 11)
            rk[17] = rotl32(rk[9]+delta[2][7], 17)
            rk[25] = rotl32(rk[17]+delta[4][5], 3)
            rk[33] = rotl32(rk[25]+delta[5][8], 11)
            rk[41] = rotl32(rk[33]+delta[6][11], 17)
            rk[49] = rotl32(rk[41]+delta[0][9], 3)
            rk[57] = rotl32(rk[49]+delta[1][12], 11)
            rk[65] = rotl32(rk[57]+delta[2][15], 17)
            rk[73] = rotl32(rk[65]+delta[4][13], 3)
            rk[81] = rotl32(rk[73]+delta[5][16], 11)
            rk[89] = rotl32(rk[81]+delta[6][19], 17)
            rk[97] = rotl32(rk[89]+delta[0][17], 3)
            rk[105] = rotl32(rk[97]+delta[1][20], 11)
            rk[113] = rotl32(rk[105]+delta[2][23], 17)
            rk[121] = rotl32(rk[113]+delta[4][21], 3)
            rk[129] = rotl32(rk[121]+delta[5][24], 11)
            rk[137] = rotl32(rk[129]+delta[6][27], 17)
            rk[145] = rotl32(rk[137]+delta[0][25], 3)
            rk[153] = rotl32(rk[145]+delta[1][28], 11)
            rk[161] = rotl32(rk[153]+delta[2][31], 17)
            rk[169] = rotl32(rk[161]+delta[4][29], 3)
            rk[177] = rotl32(rk[169]+delta[5][0], 11)
            rk[185] = rotl32(rk[177]+delta[6][3], 17)

            rk[2] = rotl32(bytesToUint32(key[4*2:])+delta[0][2], 6)
            rk[10] = rotl32(rk[2]+delta[1][5], 13)
            rk[18] = rotl32(rk[10]+delta[3][3], 1)
            rk[26] = rotl32(rk[18]+delta[4][6], 6)
            rk[34] = rotl32(rk[26]+delta[5][9], 13)
            rk[42] = rotl32(rk[34]+delta[7][7], 1)
            rk[50] = rotl32(rk[42]+delta[0][10], 6)
            rk[58] = rotl32(rk[50]+delta[1][13], 13)
            rk[66] = rotl32(rk[58]+delta[3][11], 1)
            rk[74] = rotl32(rk[66]+delta[4][14], 6)
            rk[82] = rotl32(rk[74]+delta[5][17], 13)
            rk[90] = rotl32(rk[82]+delta[7][15], 1)
            rk[98] = rotl32(rk[90]+delta[0][18], 6)
            rk[106] = rotl32(rk[98]+delta[1][21], 13)
            rk[114] = rotl32(rk[106]+delta[3][19], 1)
            rk[122] = rotl32(rk[114]+delta[4][22], 6)
            rk[130] = rotl32(rk[122]+delta[5][25], 13)
            rk[138] = rotl32(rk[130]+delta[7][23], 1)
            rk[146] = rotl32(rk[138]+delta[0][26], 6)
            rk[154] = rotl32(rk[146]+delta[1][29], 13)
            rk[162] = rotl32(rk[154]+delta[3][27], 1)
            rk[170] = rotl32(rk[162]+delta[4][30], 6)
            rk[178] = rotl32(rk[170]+delta[5][1], 13)
            rk[186] = rotl32(rk[178]+delta[7][31], 1)

            rk[3] = rotl32(bytesToUint32(key[4*3:])+delta[0][3], 11)
            rk[11] = rotl32(rk[3]+delta[1][6], 17)
            rk[19] = rotl32(rk[11]+delta[3][4], 3)
            rk[27] = rotl32(rk[19]+delta[4][7], 11)
            rk[35] = rotl32(rk[27]+delta[5][10], 17)
            rk[43] = rotl32(rk[35]+delta[7][8], 3)
            rk[51] = rotl32(rk[43]+delta[0][11], 11)
            rk[59] = rotl32(rk[51]+delta[1][14], 17)
            rk[67] = rotl32(rk[59]+delta[3][12], 3)
            rk[75] = rotl32(rk[67]+delta[4][15], 11)
            rk[83] = rotl32(rk[75]+delta[5][18], 17)
            rk[91] = rotl32(rk[83]+delta[7][16], 3)
            rk[99] = rotl32(rk[91]+delta[0][19], 11)
            rk[107] = rotl32(rk[99]+delta[1][22], 17)
            rk[115] = rotl32(rk[107]+delta[3][20], 3)
            rk[123] = rotl32(rk[115]+delta[4][23], 11)
            rk[131] = rotl32(rk[123]+delta[5][26], 17)
            rk[139] = rotl32(rk[131]+delta[7][24], 3)
            rk[147] = rotl32(rk[139]+delta[0][27], 11)
            rk[155] = rotl32(rk[147]+delta[1][30], 17)
            rk[163] = rotl32(rk[155]+delta[3][28], 3)
            rk[171] = rotl32(rk[163]+delta[4][31], 11)
            rk[179] = rotl32(rk[171]+delta[5][2], 17)
            rk[187] = rotl32(rk[179]+delta[7][0], 3)

            rk[4] = rotl32(bytesToUint32(key[4*4:])+delta[0][4], 13)
            rk[12] = rotl32(rk[4]+delta[2][2], 1)
            rk[20] = rotl32(rk[12]+delta[3][5], 6)
            rk[28] = rotl32(rk[20]+delta[4][8], 13)
            rk[36] = rotl32(rk[28]+delta[6][6], 1)
            rk[44] = rotl32(rk[36]+delta[7][9], 6)
            rk[52] = rotl32(rk[44]+delta[0][12], 13)
            rk[60] = rotl32(rk[52]+delta[2][10], 1)
            rk[68] = rotl32(rk[60]+delta[3][13], 6)
            rk[76] = rotl32(rk[68]+delta[4][16], 13)
            rk[84] = rotl32(rk[76]+delta[6][14], 1)
            rk[92] = rotl32(rk[84]+delta[7][17], 6)
            rk[100] = rotl32(rk[92]+delta[0][20], 13)
            rk[108] = rotl32(rk[100]+delta[2][18], 1)
            rk[116] = rotl32(rk[108]+delta[3][21], 6)
            rk[124] = rotl32(rk[116]+delta[4][24], 13)
            rk[132] = rotl32(rk[124]+delta[6][22], 1)
            rk[140] = rotl32(rk[132]+delta[7][25], 6)
            rk[148] = rotl32(rk[140]+delta[0][28], 13)
            rk[156] = rotl32(rk[148]+delta[2][26], 1)
            rk[164] = rotl32(rk[156]+delta[3][29], 6)
            rk[172] = rotl32(rk[164]+delta[4][0], 13)
            rk[180] = rotl32(rk[172]+delta[6][30], 1)
            rk[188] = rotl32(rk[180]+delta[7][1], 6)

            rk[5] = rotl32(bytesToUint32(key[4*5:])+delta[0][5], 17)
            rk[13] = rotl32(rk[5]+delta[2][3], 3)
            rk[21] = rotl32(rk[13]+delta[3][6], 11)
            rk[29] = rotl32(rk[21]+delta[4][9], 17)
            rk[37] = rotl32(rk[29]+delta[6][7], 3)
            rk[45] = rotl32(rk[37]+delta[7][10], 11)
            rk[53] = rotl32(rk[45]+delta[0][13], 17)
            rk[61] = rotl32(rk[53]+delta[2][11], 3)
            rk[69] = rotl32(rk[61]+delta[3][14], 11)
            rk[77] = rotl32(rk[69]+delta[4][17], 17)
            rk[85] = rotl32(rk[77]+delta[6][15], 3)
            rk[93] = rotl32(rk[85]+delta[7][18], 11)
            rk[101] = rotl32(rk[93]+delta[0][21], 17)
            rk[109] = rotl32(rk[101]+delta[2][19], 3)
            rk[117] = rotl32(rk[109]+delta[3][22], 11)
            rk[125] = rotl32(rk[117]+delta[4][25], 17)
            rk[133] = rotl32(rk[125]+delta[6][23], 3)
            rk[141] = rotl32(rk[133]+delta[7][26], 11)
            rk[149] = rotl32(rk[141]+delta[0][29], 17)
            rk[157] = rotl32(rk[149]+delta[2][27], 3)
            rk[165] = rotl32(rk[157]+delta[3][30], 11)
            rk[173] = rotl32(rk[165]+delta[4][1], 17)
            rk[181] = rotl32(rk[173]+delta[6][31], 3)
            rk[189] = rotl32(rk[181]+delta[7][2], 11)

            rk[6] = rotl32(bytesToUint32(key[4*6:])+delta[1][1], 1)
            rk[14] = rotl32(rk[6]+delta[2][4], 6)
            rk[22] = rotl32(rk[14]+delta[3][7], 13)
            rk[30] = rotl32(rk[22]+delta[5][5], 1)
            rk[38] = rotl32(rk[30]+delta[6][8], 6)
            rk[46] = rotl32(rk[38]+delta[7][11], 13)
            rk[54] = rotl32(rk[46]+delta[1][9], 1)
            rk[62] = rotl32(rk[54]+delta[2][12], 6)
            rk[70] = rotl32(rk[62]+delta[3][15], 13)
            rk[78] = rotl32(rk[70]+delta[5][13], 1)
            rk[86] = rotl32(rk[78]+delta[6][16], 6)
            rk[94] = rotl32(rk[86]+delta[7][19], 13)
            rk[102] = rotl32(rk[94]+delta[1][17], 1)
            rk[110] = rotl32(rk[102]+delta[2][20], 6)
            rk[118] = rotl32(rk[110]+delta[3][23], 13)
            rk[126] = rotl32(rk[118]+delta[5][21], 1)
            rk[134] = rotl32(rk[126]+delta[6][24], 6)
            rk[142] = rotl32(rk[134]+delta[7][27], 13)
            rk[150] = rotl32(rk[142]+delta[1][25], 1)
            rk[158] = rotl32(rk[150]+delta[2][28], 6)
            rk[166] = rotl32(rk[158]+delta[3][31], 13)
            rk[174] = rotl32(rk[166]+delta[5][29], 1)
            rk[182] = rotl32(rk[174]+delta[6][0], 6)
            rk[190] = rotl32(rk[182]+delta[7][3], 13)

            rk[7] = rotl32(bytesToUint32(key[4*7:])+delta[1][2], 3)
            rk[15] = rotl32(rk[7]+delta[2][5], 11)
            rk[23] = rotl32(rk[15]+delta[3][8], 17)
            rk[31] = rotl32(rk[23]+delta[5][6], 3)
            rk[39] = rotl32(rk[31]+delta[6][9], 11)
            rk[47] = rotl32(rk[39]+delta[7][12], 17)
            rk[55] = rotl32(rk[47]+delta[1][10], 3)
            rk[63] = rotl32(rk[55]+delta[2][13], 11)
            rk[71] = rotl32(rk[63]+delta[3][16], 17)
            rk[79] = rotl32(rk[71]+delta[5][14], 3)
            rk[87] = rotl32(rk[79]+delta[6][17], 11)
            rk[95] = rotl32(rk[87]+delta[7][20], 17)
            rk[103] = rotl32(rk[95]+delta[1][18], 3)
            rk[111] = rotl32(rk[103]+delta[2][21], 11)
            rk[119] = rotl32(rk[111]+delta[3][24], 17)
            rk[127] = rotl32(rk[119]+delta[5][22], 3)
            rk[135] = rotl32(rk[127]+delta[6][25], 11)
            rk[143] = rotl32(rk[135]+delta[7][28], 17)
            rk[151] = rotl32(rk[143]+delta[1][26], 3)
            rk[159] = rotl32(rk[151]+delta[2][29], 11)
            rk[167] = rotl32(rk[159]+delta[3][0], 17)
            rk[175] = rotl32(rk[167]+delta[5][30], 3)
            rk[183] = rotl32(rk[175]+delta[6][1], 11)
            rk[191] = rotl32(rk[183]+delta[7][4], 17)
    }

    return (keyLen >> 1) + 16
}