| 259 | } |
| 260 | |
| 261 | std::string ByteStreamToBase32 (const uint8_t * inBuf, size_t len) |
| 262 | { |
| 263 | std::string out; |
| 264 | out.reserve ((len * 8 + 4) / 5); |
| 265 | size_t pos = 1; |
| 266 | unsigned int bits = 8, tmp = inBuf[0]; |
| 267 | while (bits > 0 || pos < len) |
| 268 | { |
| 269 | if (bits < 5) |
| 270 | { |
| 271 | if (pos < len) |
| 272 | { |
| 273 | tmp <<= 8; |
| 274 | tmp |= inBuf[pos] & 0xFF; |
| 275 | pos++; |
| 276 | bits += 8; |
| 277 | } |
| 278 | else // last byte |
| 279 | { |
| 280 | tmp <<= (5 - bits); |
| 281 | bits = 5; |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | bits -= 5; |
| 286 | int ind = (tmp >> bits) & 0x1F; |
| 287 | out.push_back ((ind < 26) ? (ind + 'a') : ((ind - 26) + '2')); |
| 288 | } |
| 289 | return out; |
| 290 | } |
| 291 | } |
| 292 | } |