Cabinet Noir
>Encode / Base 64
Not sure which cipher? Identify it
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An encoding, not a cipher: three bytes become four characters from a fixed 64-symbol alphabet.
Type
encoding, not encryption
Breaking it
trivial to break
Era
1990s
Name
Standardised for MIME email attachments (Nathaniel Borenstein, RFC 2045).
Modes
encode · decode
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Tool
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History
Practice
Message
i
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Created by Denys Grybov in 2021
v.0.4.0 // released on 18.10.2026