Cipherday #66 · August 28, 2026

The answer to Cipherday #66

The full three-cipher chain from August 28, 2026, the public-domain quote it hid, and how each cipher worked. Today’s chain stays sealed until it becomes a past day.

The revealed quote

“Lost time is never found again.”— Benjamin Franklin (Poor Richard’s Almanack, 18th century)

Franklin’s thrift applied to the one coin no one can re-earn.

The cipher chain

1. Stage 1 · Caesar · Shift of 2

   Ciphertext

   Ocmg jca yjkng vjg uwp ujkpgu.

   Decodes to

   Make hay while the sun shines.

   Every letter was slid 2 places down the alphabet; sliding it back the same amount restores the line.

2. Stage 2 · Substitution · Keyword “SIGNAL”

   Ciphertext

   Oasga gmjar lqmj wdtcdk; nm kmt raaf dt wdtcmut.

   Decodes to

   Peace comes from within; do not seek it without.

   A keyword scrambled the alphabet into a fixed cipher alphabet, so each letter always stands for the same partner — letter frequency gives it away.

3. Stage 3 · Vigenère · Keyword “PUZZLE”

   Ciphertext

   Airs emby hr yikyq ezycx zflmc.

   Decodes to

   Lost time is never found again.

   A repeating keyword shifted each letter by a different amount, which is what lets one letter encrypt two ways; the right keyword resolves it.