56

ICAg represents three spaces when text is base64-encoded. For example: echo -n ' hello world' | openssl base64 produces: ICAgICAgaGVsbG8gd29ybGQ=


31

The accepted answer doesn't show how to get the answer (it shows, how to verify it). Use echo 'ICAgICAgICAgICAgICAg' | base64 -d (producing a bunch of spaces) or echo 'ICAgICAgICAgICAgICAg' | base64 -d | hexdump -C producing 00000000 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 0000000f to see what's inside.


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