Update cipher.md

2026-09-18 10:05:44 +00:00 · 2026-09-12 18:52:41 -07:00
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 ### SPECK48/96 CTR
 Stream cipher mode with a random 24-bit nonce prepended to the output. Identical plaintexts produce different ciphertexts each time. Significantly more secure than ECB. **Rotate your password after roughly every 100 encryptions** to avoid nonce reuse risk within the 24-bit space.
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+Cipher test. Decrypt this sentence with the password 123.