Introduction of LSB algorithm

LSB method (1) embedding of stream carrier: select a subset of carrier elements {j 1, j2, ... jL(m)}, in which * * * has L(m) elements for information hiding. Then this subset is replaced by m instead of the lowest bit of cji. (2) Extraction: Find the subset of camouflage elements embedded in the information {j 1, j2, ... jL(m)}, extract their lowest bits from these camouflage objects, and combine them to form secret information.