Base64

Conversion Algorithm

1. Define the string to be converted.

abcde

2. Converts to binary numbers based on the ASCII code table

01100001 01100010 01100011 01100100 01100101

3. Divide it into 6 bits each

011000 010110 001001 100011 011001 000110 0101

4. Add 0 so that the last group is 6 bits

011000 010110 001001 100011 011001 000110 010100

5. Convert to characters based on the base64 conversion table

Y W J j Z G U

6. Combine them into four letters each

YWJj ZGU

7. If the last group is less than 4 characters, add = for the number of them

YWJj ZGU=

8. Concatenating the groups into a single string completes the base64 string

YWJjZGU=