fseek(file, 0, 2);
for(how_much_digits=0 ; ; how_much_digits++)
{
ch_tmp=getc(file_txt);
if(feof(file_txt))
break;
fprintf(file, "%c", ch_tmp);
}
def hide(secret, container):
it, res = iter(container), []
for c in secret:
x = ord(c)
for _ in range(8):
z = ord(next(it))
if x & 1:
z |= 1
else:
z &= 254
x >>= 1
res.append(chr(z))
return ''.join(res)
def show(container):
it, res = iter(container), []
for _ in range(len(container) // 8):
x, mask = 0, 1
for _ in range(8):
c = next(it)
if ord(c) & 1:
x |= mask
mask <<= 1
res.append(chr(x))
return ''.join(res)
container = "01234567890123456789012345678901" # Тупая строка из 32 букв
secret = "Yes!" # Тупой секрет из 32/8 = 4 букв
s = hide(secret, container)
print(s) # "10235476981023547788113254668900"
print(show(s)) # "Yes!"
Простой
