How to divide text into bit blocks?

Question

C++ / C#

how to divide text into bit blocks, 64 bits in each block?

Answer 1

I mean how to share? Split the original string (text) into blocks of 8 bytes each, if necessary, if, for example, the last block of useful information is less than 8 bytes - supplement the rest with a character (byte) filler. As a result, you get the nth number of blocks, the total length of which is a multiple of 64 bits. Or what is the meaning of the question?

Answer 2

I need to swap bits
[C#] How to set and read a single bit from a byte