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Speck128/128

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Speck128/128

An NSA lightweight ARX cipher (2013) using only addition, rotation, and XOR — no S-boxes or lookup tables at all, unlike every other symmetric cipher in this registry.

Securesymmetric

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Imported traces are validated and replayed locally. They never run a cipher operation automatically.

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XOR Cipher
Deprecated

A simple stream cipher performing byte-wise XOR operations between plaintext and key.

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One-Time Pad (OTP)
Secure

An unbreakable cipher when used with a truly random, single-use key of equal length to the plaintext.

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DES
Broken

Data Encryption Standard. A legacy 64-bit block cipher utilizing a 56-bit key size.

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