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Encoding is changing the way data is presented
- using a public, generally-understood,
and (usually) low-overhead method
- for the purpose of allowing the data to
survive intact and easily recoverable after some sort of transfer.
Encryption is changing the way data is presented
- using a method or a key that is restricted
and (as it happens) often computationally intensive
- for the purpose of shielding the data
from some people while making it available to others.
In short, encoding is for preservation,
encryption is for obfuscation.
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