源码传输门地址： https://wwi.lanzoup.com/izAEa027198d
base64
// // Created by jksun on 2021/4/15. // #include "base64.h" #include <stdio.h> #include <stdlib.h> /** * 转解码过程 * 3 * 8 = 4 * 6; 3字节占24位, 4*6=24 * 先将要编码的转成对应的ASCII值 * 如编码: s 1 3 * 对应ASCII值为: 115 49 51 * 对应二进制为： 01110011 00110001 00110011 * 将6个分组分成4组： 011100 110011 000100 110011 * 而计算机是bit存储, 因此，每组高位补两个0如下： * 00011100 00110011 00000100 00110011对应:28 51 4 51 * 查找base64 转换表 对应 c z E z * * 解码 * c z E z * 对应ASCII值为 99 122 69 122 * 对应表base64_suffix_map的值为 28 51 4 51 * 对应的二进制值为 00011100 00110011 00000100 00110011 * 每组前两位依次去除， 拼接成3字节 * 即: 01110011 00110001 00110011 * 对应的就是s 1 3 */ #define BASE64_PAD '=' #define BASE64DE_FIRST ' ' #define BASE64DE_LAST 'z' /* BASE 64 encode table */ static const char base64en[] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c'
,
'd'
,
'e'
,
'f'
,
'g'
,
'h'
,
'i'
,
'j'
,
'k'
,
'l'
,
'm'
,
'n'
,
'o'
,
'p'
,
'q'
,
'r'
,
's'
,
't'
,
'u'
,
'v'
,
'w'
,
'x'
,
'y'
,
'z'
,
'0'
,
'1'
,
'2'
,
'3'
,
'4'
,
'5'
,
'6'
,
'7'
,
'8'
,
'9'
,
'+'
,
'/'
,
}
;
/* ASCII order for BASE 64 decode, 255 in unused character */
static
const
unsigned
char base64de
[
]
=
{
/* nul, soh, stx, etx, eot, enq, ack, bel, */
255
,
255
,
255
,
255
,
255
,
255
,
255
,
255
,
/* bs, ht, nl, vt, np, cr, so, si, */
255
,
255
,
255
,
255
,
255
,
255
,
255
,
255
,
/* dle, dc1, dc2, dc3, dc4, nak, syn, etb, */
255
,
255
,
255
,
255
,
255
,
255
,
255
,
255
,
/* can, em, sub, esc, fs, gs, rs, us, */
255
,
255
,
255
,
255
,
255
,
255
,
255
,
255
,
/* sp, '!', '"', '#', '$', '%', '&', ''', */
255
,
255
,
255
,
255
,
255
,
255
,
255
,
255
,
/* '(', ')', '*', '+', ',', '-', '.', '/', */
255
,
255
,
255
,
62
,
255
,
255
,
255
,
63
,
/* '0', '1', '2', '3', '4', '5', '6', '7', */
52
,
53
,
54
,
55
,
56
,
57
,
58
,
59
,
/* '8', '9', ':', ';', '<', '=', '>', '?', */
60
,
61
,
255
,
255
,
255
,
255
,
255
,
255
,
/* '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', */
255
,
0
,
1
,
2
,
3
,
4
,
5
,
6
,
/* 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', */
7
,
8
,
9
,
10
,
11
,
12
,
13
,
14
,
/* 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', */
15
,
16
,
17
,
18
,
19
,
20
,
21
,
22
,
/* 'X', 'Y', 'Z', '[', '\', ']', '^', '_', */
23
,
24
,
25
,
255
,
255
,
255
,
255
,
255
,
/* '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', */
255
,
26
,
27
,
28
,
29
,
30
,
31
,
32
,
/* 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', */
33
,
34
,
35
,
36
,
37
,
38
,
39
,
40
,
/* 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', */
41
,
42
,
43
,
44
,
45
,
46
,
47
,
48
,
/* 'x', 'y', 'z', '{', '|', '}', '~', del, */
49
,
50
,
51
,
255
,
255
,
255
,
255
,
255
}
;
unsigned
int
base64_encode
(
const
unsigned
char
*in
,
unsigned
int inlen
,
char
*out
)
{
int s
;
unsigned
int i
;
unsigned
int j
;
unsigned
char c
;
unsigned
char l
; s
=
0
; l
=
0
;
for
(i
= j
=
0
; i
< inlen
; i
++
)
{
c
= in
[i
]
;
switch
(s
)
{
case
0
: s
=
1
; out
[j
++
]
= base64en
[
(c
>>
2
)
&
0x3F
]
;
break
;
case
1
: s
=
2
; out
[j
++
]
= base64en
[
(
(l
&
0x3
)
<<
4
)
|
(
(c
>>
4
)
&
0xF
)
]
;
break
;
case
2
: s
=
0
; out
[j
++
]
= base64en
[
(
(l
&
0xF
)
<<
2
)
|
(
(c
>>
6
)
&
0x3
)
]
; out
[j
++
]
= base64en
[c
&
0x3F
]
;
break
;
} l
= c
;
}
switch
(s
)
{
case
1
: out
[j
++
]
= base64en
[
(l
&
0x3
)
<<
4
]
; out
[j
++
]
= BASE64_PAD
; out
[j
++
]
= BASE64_PAD
;
break
;
case
2
: out
[j
++
]
= base64en
[
(l
&
0xF
)
<<
2
]
; out
[j
++
]
= BASE64_PAD
;
break
;
} out
[j
]
=
0
;
return j
;
}
unsigned
int
base64_decode
(
const
char
*in
,
unsigned
int inlen
,
unsigned
char
*out
)
{
unsigned
int i
;
unsigned
int j
;
unsigned
char c
;
if
(inlen
&
0x3
)
{
return
0
;
}
for
(i
= j
=
0
; i
< inlen
; i
++
)
{
if
(in
[i
]
== BASE64_PAD
)
{
break
;
}
if
(in
[i
]
< BASE64DE_FIRST
|| in
[i
]
> BASE64DE_LAST
)
{
return
0
;
} c
= base64de
[
(
unsigned
char
)in
[i
]
]
;
if
(c
==
255
)
{
return
0
;
}
switch
(i
&
0x3
)
{
case
0
: out
[j
]
=
(c
<<
2
)
&
0xFF
;
break
;
case
1
: out
[j
++
]
|=
(c
>>
4
)
&
0x3
; out
[j
]
=
(c
&
0xF
)
<<
4
;
break
;
case
2
: out
[j
++
]
|=
(c
>>
2
)
&
0xF
; out
[j
]
=
(c
&
0x3
)
<<
6
;
break
;
case
3
: out
[j
++
]
|= c
;
break
;
}
}
return j
;
}
xyaes:
//
// Created by smallsun on 2021/4/16.
//
#include "xyAes.h"
unsigned int RCON[10] = {
0x12310000, 0x02000100, 0x04020000, 0x08020200, 0x10102000, 0x30020400, 0x40002000, 0x80002000,
0x1B002000, 0x36200200
};
unsigned int TBox_1[256] = {
0xC66363A5, 0xF87C7C84, 0xEE777799, 0xF67B7B8D, 0xFFF2F20D, 0xD66B6BBD, 0xDE6F6FB1, 0x91C5C554,
0x60303050, 0x02010103, 0xCE6767A9, 0x562B2B7D, 0xE7FEFE19, 0xB5D7D762, 0x4DABABE6, 0xEC76769A,
0x8FCACA45, 0x1F82829D, 0x89C9C940, 0xFA7D7D87, 0xEFFAFA15, 0xB25959EB, 0x8E4747C9, 0xFBF0F00B,
0x41ADADEC, 0xB3D4D467, 0x5FA2A2FD, 0x45AFAFEA, 0x239C9CBF, 0x53A4A4F7, 0xE4727296, 0x9BC0C05B,
0x75B7B7C2, 0xE1FDFD1C, 0x3D9393AE, 0x4C26266A, 0x6C36365A, 0x7E3F3F41, 0xF5F7F702, 0x83CCCC4F,
0x6834345C, 0x51A5A5F4, 0xD1E5E534, 0xF9F1F108, 0xE2717193, 0xABD8D873, 0x62313153, 0x2A15153F,
0x0804040C, 0x95C7C752, 0x46232365, 0x9DC3C35E, 0x30181828, 0x379696A1, 0x0A05050F, 0x2F9A9AB5,
0x0E070709, 0x24121236, 0x1B80809B, 0xDFE2E23D, 0xCDEBEB26, 0x4E272769, 0x7FB2B2CD, 0xEA75759F,
0x1209091B, 0x1D83839E, 0x582C2C74, 0x341A1A2E, 0x361B1B2D, 0xDC6E6EB2, 0xB45A5AEE, 0x5BA0A0FB,
0xA45252F6, 0x763B3B4D, 0xB7D6D661, 0x7DB3B3CE, 0x5229297B, 0xDDE3E33E, 0x5E2F2F71, 0x13848497,
0xA65353F5, 0xB9D1D168, 0x00000000, 0xC1EDED2C, 0x40202060, 0xE3FCFC1F, 0x79B1B1C8, 0xB65B5BED,
0xD46A6ABE, 0x8DCBCB46, 0x67BEBED9, 0x7239394B, 0x944A4ADE, 0x984C4CD4, 0xB05858E8, 0x85CFCF4A,
0xBBD0D06B, 0xC5EFEF2A, 0x4FAAAAE5, 0xEDFBFB16, 0x864343C5, 0x9A4D4DD7, 0x66333355, 0x11858594,
0x8A4545CF, 0xE9F9F910, 0x04020206, 0xFE7F7F81, 0xA05050F0, 0x783C3C44, 0x259F9FBA, 0x4BA8A8E3,
0xA25151F3, 0x5DA3A3FE, 0x804040C0, 0x058F8F8A, 0x3F9292AD, 0x219D9DBC, 0x70383848, 0xF1F5F504,
0x63BCBCDF, 0x77B6B6C1, 0xAFDADA75, 0x42212163, 0x20101030, 0xE5FFFF1A, 0xFDF3F30E, 0xBFD2D26D,
0x81CDCD4C, 0x180C0C14, 0x26131335, 0xC3ECEC2F, 0xBE5F5FE1, 0x359797A2, 0x884444CC, 0x2E171739,
0x93C4C457, 0x55A7A7F2, 0xFC7E7E82, 0x7A3D3D47, 0xC86464AC, 0xBA5D5DE7, 0x3219192B, 0xE6737395,
0xC06060A0, 0x19818198, 0x9E4F4FD1, 0xA3DCDC7F, 0x44222266, 0x542A2A7E, 0x3B9090AB, 0x0B888883,
0x8C4646CA, 0xC7EEEE29, 0x6BB8B8D3, 0x2814143C, 0xA7DEDE79, 0xBC5E5EE2, 0x160B0B1D, 0xADDBDB76,
0xDBE0E03B, 0x64323256, 0x743A3A4E, 0x140A0A1E, 0x924949DB, 0x0C06060A, 0x4824246C, 0xB85C5CE4,
0x9FC2C25D, 0xBDD3D36E, 0x43ACACEF, 0xC46262A6, 0x399191A8, 0x319595A4, 0xD3E4E437, 0xF279798B,
0xD5E7E732, 0x8BC8C843, 0x6E373759, 0xDA6D6DB7, 0x018D8D8C, 0xB1D5D564, 0x9C4E4ED2, 0x49A9A9E0,
0xD86C6CB4, 0xAC5656FA, 0xF3F4F407, 0xCFEAEA25, 0xCA6565AF, 0xF47A7A8E, 0x47AEAEE9, 0x10080818,
0x6FBABAD5, 0xF0787888, 0x4A25256F, 0x5C2E2E72, 0x381C1C24, 0x57A6A6F1, 0x73B4B4C7, 0x97C6C651,
0xCBE8E823, 0xA1DDDD7C, 0xE874749C, 0x3E1F1F21, 0x964B4BDD, 0x61BDBDDC, 0x0D8B8B86, 0x0F8A8A85,
0xE0707090, 0x7C3E3E42, 0x71B5B5C4, 0xCC6666AA, 0x904848D8, 0x06030305, 0xF7F6F601, 0x1C0E0E12,
0xC26161A3, 0x6A35355F, 0xAE5757F9, 0x69B9B9D0, 0x17868691, 0x99C1C158, 0x3A1D1D27, 0x279E9EB9,
0xD9E1E138, 0xEBF8F813, 0x2B9898B3, 0x22111133, 0xD26969BB, 0xA9D9D970, 0x078E8E89, 0x339494A7,
0x2D9B9BB6, 0x3C1E1E22, 0x15878792, 0xC9E9E920, 0x87CECE49, 0xAA5555FF, 0x50282878, 0xA5DFDF7A,
0x038C8C8F, 0x59A1A1F8, 0x09898980, 0x1A0D0D17, 0x65BFBFDA, 0xD7E6E631, 0x844242C6, 0xD06868B8,
0x824141C3, 0x2999