A 5-bit alphabet XOR chart for all your pen-&-paper One Time Pad encryption needs.3yr ⋅ Saunt-Orolo ⋅ r/crypto
Does this mode exist? Is it safe? XOR the counter with the block BEFORE encryption3yr ⋅ phi_array ⋅ r/crypto
Found this in a textbook on algorithms. The letter R in ciphertext corresponds to both J and U in plaintext. Is this a mistake? Shouldn’t simple substitution maps like this be bijective?3yr ⋅ DatBoi_BP ⋅ r/crypto
Moxie Marlinspike receives RWC Levchin Price 2017 for Signal protocol invention7yr ⋅ dionyziz ⋅ r/crypto
Cryptosystem dependency diagram shows how crypto is about more than algorithms and key length7yr ⋅ ryanwheff ⋅ r/crypto
Game Dedicated to Blockbattle by CurioInvest. Go and Check it out: https://www.curioinvest.com/game5yr ⋅ curioinvest ⋅ r/crypto
The NSA making casual suggestions in Wikibook's 'High School Mathematics Extension'.11yr ⋅ faceplanted ⋅ r/crypto
Perfect example of how NOT to download and install a secure cryptographic library7yr ⋅ m8XnO2Cd345mPzA1 ⋅ r/crypto
Cipher book is probably a prop, but can anyone tell me if it's real or if there is a similar book out there like this?6yr ⋅ reesecodebook ⋅ r/crypto
Not sure where to go - I drew up a handshake protocol where neither password nor password+salt hash is ever transmitted in plain text. I'm trying to come up with a way of authenticating over plain HTTP and humbly ask for your opinion.10yr ⋅ TheMerovingian ⋅ r/crypto
Did yahoo user 'John' crack the encrypted notes that the FBI released to the public to help solve a murder?14yr ⋅ postermmxvicom ⋅ r/crypto
This is a death threat from Brazil's biggest crime organization leader, Marcola to a federal judge. Can anyone figure out what is being said in the letter?5yr ⋅ [deleted] ⋅ r/crypto
(x-post from /r/codes) Anyone know what this base64 is at the bottom of Amazon.com's source?7yr ⋅ Misker ⋅ r/crypto
Found this near a 'Haven' holiday park in Hastings, Sussex (South England) 13yr ⋅ monkey_in_shoes ⋅ r/crypto
Screencap from movie The Mechanic: Encrypted Message is *almost* actually legit.13yr ⋅ aviewanew ⋅ r/crypto
Just for fun, try to crack this code. Hint: Always sanitize beforehand, just to be safe. (Word or Phrase) (reposted)14yr ⋅ skeeto ⋅ r/crypto
