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How to decode Base64 to original String?

How to encode messages in base64?

  • I was on Twitter and one of the users I am following posted a message for people to decode. I figured out that it was encoded in base64 but I am clueless on decoding/encoding these messages. Can anyone show me how to encode a message into base64 and then decode it properly? Say the message "This is in base64"

  • Answer:

    You know that base64 encoding 6 bits groups are taken some symbol is assigned based on the 6 bit value. If 000000 then A, 000001 then B and vice versa. Reverse also is carried out in the same fashion. If the received base64 string contains A then in its place 000000 is taken and then the whole thing is converted to ASCII string

Docere Suess at Yahoo! Answers Visit the source

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lxuser@ubuntu:/tmp$ echo "This is in base64" | base64 VGhpcyBpcyBpbiBiYXNlNjQK lxuser@ubuntu:/tmp$ echo VGhpcyBpcyBpbiBiYXNlNjQK | base64 -d This is in base64

John H

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