aes.cc

简单加密工具升了下级

   	t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[39];

    if (key->rounds > 10)
    {
        s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[40];
        s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[41];
        s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[42];
        s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[43];

        t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[44];
        t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[45];
        t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[46];
        t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[47];

        if (key->rounds > 12)
        {
            s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[48];
            s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[49];
            s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[50];
            s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[51];

            t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[52];
            t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[53];
            t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[54];
            t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[55];
        }
    }
    rk += key->rounds << 2;

    s0 = (Te2[(t0 >> 24)       ] & 0xff000000) ^
         (Te3[(t1 >> 16) & 0xff] & 0x00ff0000) ^
         (Te0[(t2 >>  8) & 0xff] & 0x0000ff00) ^
         (Te1[(t3      ) & 0xff] & 0x000000ff) ^
         rk[0];
    PUTU32(out     , s0);
    s1 = (Te2[(t1 >> 24)       ] & 0xff000000) ^
         (Te3[(t2 >> 16) & 0xff] & 0x00ff0000) ^
         (Te0[(t3 >>  8) & 0xff] & 0x0000ff00) ^
         (Te1[(t0      ) & 0xff] & 0x000000ff) ^
         rk[1];
    PUTU32(out +  4, s1);
    s2 = (Te2[(t2 >> 24)       ] & 0xff000000) ^
         (Te3[(t3 >> 16) & 0xff] & 0x00ff0000) ^
         (Te0[(t0 >>  8) & 0xff] & 0x0000ff00) ^
         (Te1[(t1      ) & 0xff] & 0x000000ff) ^
         rk[2];
    PUTU32(out +  8, s2);
    s3 = (Te2[(t3 >> 24)       ] & 0xff000000) ^
         (Te3[(t0 >> 16) & 0xff] & 0x00ff0000) ^
         (Te0[(t1 >>  8) & 0xff] & 0x0000ff00) ^
         (Te1[(t2      ) & 0xff] & 0x000000ff) ^
         rk[3];
    PUTU32(out + 12, s3);
}

void AES_decrypt(const unsigned char *in, unsigned char *out,
                 const AES_KEY *key)
{
    const u32 *rk;
    u32 s0, s1, s2, s3, t0, t1, t2, t3;

    assert(in && out && key);
    rk = key->rd_key;

    s0 = GETU32(in     ) ^ rk[0];
    s1 = GETU32(in +  4) ^ rk[1];
    s2 = GETU32(in +  8) ^ rk[2];
    s3 = GETU32(in + 12) ^ rk[3];

    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[ 4];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[ 5];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[ 6];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[ 7];

    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[ 8];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[ 9];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[10];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[11];

    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[12];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[13];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[14];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[15];

    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[16];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[17];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[18];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[19];

    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[20];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[21];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[22];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[23];

    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[24];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[25];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[26];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[27];

    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[28];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[29];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[30];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[31];

    s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[32];
    s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[33];
    s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[34];
    s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[35];

    t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[36];
    t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[37];
    t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[38];
    t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[39];

    if (key->rounds > 10)
    {
        s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[40];
        s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[41];
        s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[42];
        s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[43];

        t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[44];
        t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[45];
        t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[46];
        t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[47];

        if (key->rounds > 12)
        {
            s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >>  8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[48];
            s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >>  8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[49];
            s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >>  8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[50];
            s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >>  8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[51];

            t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >>  8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[52];
            t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >>  8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[53];
            t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >>  8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[54];
            t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[55];
        }
    }
    rk += key->rounds << 2;

    s0 = (Td4[(t0 >> 24)       ] << 24) ^
         (Td4[(t3 >> 16) & 0xff] << 16) ^
         (Td4[(t2 >>  8) & 0xff] <<  8) ^
         (Td4[(t1      ) & 0xff])       ^
         rk[0];
    PUTU32(out     , s0);
   	s1 = (Td4[(t1 >> 24)       ] << 24) ^
         (Td4[(t0 >> 16) & 0xff] << 16) ^
         (Td4[(t3 >>  8) & 0xff] <<  8) ^
         (Td4[(t2      ) & 0xff])       ^
         rk[1];
    PUTU32(out +  4, s1);
   	s2 = (Td4[(t2 >> 24)       ] << 24) ^
         (Td4[(t1 >> 16) & 0xff] << 16) ^
         (Td4[(t0 >>  8) & 0xff] <<  8) ^
         (Td4[(t3      ) & 0xff])       ^
         rk[2];
    PUTU32(out +  8, s2);
    s3 = (Td4[(t3 >> 24)       ] << 24) ^
         (Td4[(t2 >> 16) & 0xff] << 16) ^
         (Td4[(t1 >>  8) & 0xff] <<  8) ^
         (Td4[(t0      ) & 0xff])       ^
         rk[3];
    PUTU32(out + 12, s3);
}

void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
                     const unsigned long length, const AES_KEY *key,
                     unsigned char *ivec, const int enc)
{
    unsigned long n;
    unsigned long len = length;
    unsigned char tmp[AES_BLOCK_SIZE];
    const unsigned char *iv = ivec;

    assert(in && out && key && ivec);
    assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc));

    if (AES_ENCRYPT == enc)
    {
        while (len >= AES_BLOCK_SIZE)
        {
            for(n=0; n < AES_BLOCK_SIZE; ++n)
            {
                out[n] = in[n] ^ iv[n];
            }
            AES_encrypt(out, out, key);
            iv = out;
            len -= AES_BLOCK_SIZE;
            in += AES_BLOCK_SIZE;
            out += AES_BLOCK_SIZE;
        }
        if (len)
        {
            for(n=0; n < len; ++n)
            {
                out[n] = in[n] ^ iv[n];
            }
            for(n=len; n < AES_BLOCK_SIZE; ++n)
            {
                out[n] = iv[n];
            }
            AES_encrypt(out, out, key);
            iv = out;
        }
        memcpy(ivec,iv,AES_BLOCK_SIZE);
    } else if (in != out) {
        while (len >= AES_BLOCK_SIZE)
        {
            AES_decrypt(in, out, key);
            for(n=0; n < AES_BLOCK_SIZE; ++n)
            {
                out[n] ^= iv[n];
            }
            iv = in;
            len -= AES_BLOCK_SIZE;
            in  += AES_BLOCK_SIZE;
            out += AES_BLOCK_SIZE;
        }
        if (len)
        {
            AES_decrypt(in,tmp,key);
            for(n=0; n < len; ++n)
            {
                out[n] = tmp[n] ^ iv[n];
            }
            iv = in;
        }
        memcpy(ivec,iv,AES_BLOCK_SIZE);
    }
    else
    {
        while (len >= AES_BLOCK_SIZE)
        {
            memcpy(tmp, in, AES_BLOCK_SIZE);
            AES_decrypt(in, out, key);
            for(n=0; n < AES_BLOCK_SIZE; ++n)
            {
                out[n] ^= ivec[n];
            }
            memcpy(ivec, tmp, AES_BLOCK_SIZE);
            len -= AES_BLOCK_SIZE;
            in += AES_BLOCK_SIZE;
            out += AES_BLOCK_SIZE;
        }
        if (len)
        {
            memcpy(tmp, in, AES_BLOCK_SIZE);
            AES_decrypt(tmp, out, key);
            for(n=0; n < len; ++n)
            {
                out[n] ^= ivec[n];
            }
            for(n=len; n < AES_BLOCK_SIZE; ++n)
            {
                out[n] = tmp[n];
            }
            memcpy(ivec, tmp, AES_BLOCK_SIZE);
        }
    }
}