| 0,0 → 1,59 |
|---|
| /* Author: PaulCodeman |
| Example: |
| char bufferb64[0x1000] = {0}; |
| base64_encode("Kevin van Zonneveld",#bufferb64, 19); |
| #bufferb64 == "S2V2aW4gdmFuIFpvbm5ldmVsZA==" |
| */ |
| |
| :dword b64_symbols = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; |
| inline void base64_encode(dword data, buffer, length) |
| { |
| byte o1 = 0; |
| byte o2 = 0; |
| byte o3 = 0; |
| dword bits = 0; |
| dword h1 = 0; |
| dword h2 = 0; |
| dword h3 = 0; |
| dword h4 = 0; |
| |
| dword end = 0; |
| end = data+length; |
| |
| do |
| { |
| o1 = DSBYTE[data];data++; |
| if (data < end) {o2 = DSBYTE[data];data++;} else o2 = 0; |
| if (data < end) {o3 = DSBYTE[data];data++;} else o3 = 0; |
| |
| bits = o1<<16; |
| bits |= o2<<8; |
| bits |= o3; |
| |
| h1 = bits>>18 & 0x3f; |
| h2 = bits>>12 & 0x3f; |
| h3 = bits>>6 & 0x3f; |
| h4 = bits & 0x3f; |
| |
| DSBYTE[buffer] = DSBYTE[#b64_symbols+h1];buffer++; |
| DSBYTE[buffer] = DSBYTE[#b64_symbols+h2];buffer++; |
| DSBYTE[buffer] = DSBYTE[#b64_symbols+h3];buffer++; |
| DSBYTE[buffer] = DSBYTE[#b64_symbols+h4];buffer++; |
| } while(end > data); |
| switch(length % 3) |
| { |
| case 1: |
| buffer--; |
| DSBYTE[buffer] = '='; |
| buffer--; |
| DSBYTE[buffer] = '='; |
| buffer+=2; |
| break; |
| case 2: |
| buffer--; |
| DSBYTE[buffer] = '='; |
| buffer++; |
| break; |
| } |
| DSBYTE[buffer] = 0; |
| } |