Hidden Spaces
Concealing an encrypted message in the existing whitespace positions of ordinary text.
Module concept:
- Channel: ordinary text that already contains spaces.
- Carrier: existing single spaces
U+0020. - Encoding:
U+0020→ 0,U+00A0→ 1. - Goal: preserve the appearance of the text; the safety of hidden markers depends on how the transmission channel processes the text.
Source text: "The document is approved by the department."
After embedding, the appearance is preserved,
but some ordinary spaces are replaced with non-breaking ones
that encode the encrypted data.