Cabinet Noir>Practice / Base 64

Not sure which cipher? Identify it
An encoding, not a cipher: three bytes become four characters from a fixed 64-symbol alphabet.
Typeencoding, not encryption
Breaking ittrivial to break
Era1990s
NameStandardised for MIME email attachments (Nathaniel Borenstein, RFC 2045).
Modesencode · decode

Practice

Base 64
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Meet me at dawn

Easy
TUVFVE1FQVREQVdO
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All that glisters

Medium
QUxMVEhBVEdMSVNURVJTSVNOT1RHT0xE
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Eliminate the impossible

Hard
V0hFTllPVUhBVkVFTElNSU5BVEVEVEhFSU1QT1NTSUJMRVdIQVRFVkVSUkVNQUlOU0hPV0VWRVJJTVBST0JBQkxFTVVTVEJFVEhFVFJVVEg=
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Created by Denys Grybov in 2021

v.0.4.0 // released on 18.10.2026