// SUBREDDIT_PROFILE
r/cryptography
› For people interested in the mathematical and theoretical side of modern cryptography.
// MEMBERS
97,780
› subscribers
// POSTS_INDEXED
268
› analyzed records
// COMMUNITY_AGE
18y
› since 2008-06-04
// STATUS
[ok] active
› feed indexed
// QUICK_ACTIONS
// Recent posts in r/cryptography
[ latest we indexed · by upvotes ]- 01 RSA-260 has been factored by Eric Lu ↑ 141 · 2026-09-03
- 02 SRP-6a gotcha: tssrp6a drops a leading 0x00 byte from the salt, swift-srp doesn't ↑ 7 · 2026-11-03
- 03 could the roots of polynomials be used as encryption? ↑ 6 · 2026-11-02
- 04 I spend more time planning how to learn cryptography than actually learning it. ↑ 6 · 2026-11-01
- 05 Is it realistic to aspire for a career in cryptography without a PhD? ↑ 3 · 2026-11-05
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// FAQ [ 3 entries ]
01 › What is r/cryptography about? [ expand ↓ ] [ collapse ↑ ]
r/cryptography is a Reddit community with 97,780 members. For people interested in the mathematical and theoretical side of modern cryptography.
02 › How active is r/cryptography? [ expand ↓ ] [ collapse ↑ ]
r/cryptography has 97,780 subscribers and 268 posts in our index. It was created on 2008-06-04, 18 years ago.
03 › Which subreddits are similar to r/cryptography? [ expand ↓ ] [ collapse ↑ ]
Other Education & Science communities of a similar size include r/nuclear (101,069 members), r/ancientgreece (100,856 members), r/mars (100,138 members), r/urbanism (100,086 members). Each is listed with its own subscriber and post counts in the related communities section above.