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r/cryptography is a subreddit with 77k members. Its distinguishing qualities are that the community is large in size.
For people interested in the mathematical and theoretical side of modern cryptography.
Popular Themes in r/cryptography
#1
Solution Requests
: "Storing RSA Private keys in DNS TXT records?"
18 posts
#2
Advice Requests
: "How to get started in Cryptography? "
11 posts
#3
Self-Promotion
: "OpenSSH 9.9 released - New hybrid ML-KEM X25519 post-quantum key exchange and faster NTRUPrime key exchange code"
2 posts
#4
Pain & Anger
: "Custom digital certificate format, security issues?"
1 post
Popular Topics in r/cryptography
#1
Cryptography
: "Online Cryptography course by Alfred Menezes"
43 posts
#2
Encryption
: "Will Encryption ever be banned"
33 posts
#3
Quantum
: "Quantum Apocalypse? Demystifying the Doomsday of Encryption"
12 posts
#4
Key
: "Are PGP Keys quantum resistant?"
8 posts
#5
Post Quantum
: "OpenSSH 9.9 released - New hybrid ML-KEM X25519 post-quantum key exchange and faster NTRUPrime key exchange code"
5 posts
#6
Algorithms
4 posts
#7
Sha256
3 posts
#8
Aes
3 posts
#9
Cipher
3 posts
#10
Fhe
: "Reminder: Fhe.org (Fully Homomorphic Encryption) 2025 cryptography Call for Presentations submission deadline is in 2 weeks!"
3 posts
Member Growth in r/cryptography
Daily
+29 members(0.0%)
Monthly
+911 members(1.2%)
Yearly
+6k members(8.2%)
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