查看已激活人数优化

杭振泉

2026-05-18 2e08efe58fda93c96659a8bcf2efa84655ca2c4c

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
#ifndef AESNIENCECB_H
#define AESNIENCECB_H
 
#include <wmmintrin.h>
 
namespace {
 
/* Note – the length of the output buffer is assumed to be a multiple of 16 bytes */
void AES_ECB_encrypt(const unsigned char *in,  //pointer to the PLAINTEXT
                     unsigned char *out,       //pointer to the CIPHERTEXT buffer
                     unsigned long length,     //text length in bytes
                     const char *key,          //pointer to the expanded key schedule
                     int number_of_rounds)     //number of AES rounds 10,12 or 14
{
    __m128i tmp;
    unsigned long i;
    int j;
    if(length%16)
        length = length/16+1;
    else
        length = length/16;
 
    for(i = 0; i < length; i++) {
        tmp = _mm_loadu_si128 (&((__m128i*)in)[i]);
        tmp = _mm_xor_si128 (tmp,((__m128i*)key)[0]);
        for(j=1; j <number_of_rounds; j++) {
            tmp = _mm_aesenc_si128 (tmp, ((__m128i*)key)[j]);
        }
        tmp = _mm_aesenclast_si128 (tmp,((__m128i*)key)[j]);
        _mm_storeu_si128 (&((__m128i*)out)[i],tmp);
        }
}
 
void AES_ECB_decrypt(const unsigned char *in,  //pointer to the CIPHERTEXT
                     unsigned char *out,       //pointer to the DECRYPTED TEXT buffer
                     unsigned long length,     //text length in bytes
                     const char *key,          //pointer to the expanded key schedule
                     int number_of_rounds)     //number of AES rounds 10,12 or 14
{
    __m128i tmp;
    unsigned long i;
    int j;
    if(length%16)
        length = length/16+1;
    else
        length = length/16;
    for(i = 0; i < length; i++) {
        tmp = _mm_loadu_si128 (&((__m128i*)in)[i]);
        tmp = _mm_xor_si128 (tmp,((__m128i*)key)[0]);
        for(j = 1; j < number_of_rounds; j++) {
            tmp = _mm_aesdec_si128 (tmp,((__m128i*)key)[j]);
        }
        tmp = _mm_aesdeclast_si128 (tmp,((__m128i*)key)[j]);
        _mm_storeu_si128 (&((__m128i*)out)[i],tmp);
    }
}
 
}
 
#endif // AESNIENCECB_H