Safe_Base32 安全验证码字符
用于生成安全验证码, 避免验证码被穷举破解,同时兼容可读性不容易输入错误,
统一采用
大写字符展示,兼容小写去除
I,O,0,1歧义字符
| 二进制 | 十进制 | 十六进制 | 字符 |
|---|---|---|---|
| 00110010 | 50 | 32 | 2 |
| 00110011 | 51 | 33 | 3 |
| 00110100 | 52 | 34 | 4 |
| 00110101 | 53 | 35 | 5 |
| 00110110 | 54 | 36 | 6 |
| 00110111 | 55 | 37 | 7 |
| 00111000 | 56 | 38 | 8 |
| 00111001 | 57 | 39 | 9 |
| 01000001 | 65 | 41 | A |
| 01000010 | 66 | 42 | B |
| 01000011 | 67 | 43 | C |
| 01000100 | 68 | 44 | D |
| 01000101 | 69 | 45 | E |
| 01000110 | 70 | 46 | F |
| 01000111 | 71 | 47 | G |
| 01001000 | 72 | 48 | H |
| 01001010 | 74 | 4A | J |
| 01001011 | 75 | 4B | K |
| 01001100 | 76 | 4C | L |
| 01001101 | 77 | 4D | M |
| 01001110 | 78 | 4E | N |
| 01010000 | 80 | 50 | P |
| 01010001 | 81 | 51 | Q |
| 01010010 | 82 | 52 | R |
| 01010011 | 83 | 53 | S |
| 01010100 | 84 | 54 | T |
| 01010101 | 85 | 55 | U |
| 01010110 | 86 | 56 | V |
| 01010111 | 87 | 57 | W |
| 01011000 | 88 | 58 | X |
| 01011001 | 89 | 59 | Y |
| 01011010 | 90 | 5A | Z |