C2SP/C2SP

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Community Cryptography Specification Project

Stars: 665
Forks: 105
Open beginner issues: 1
Indexed issues: 36
Avg merge: 22h 22m
Merged PRs (30d): 6

Dominant language: Go
License: No license data
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

36 open issues indexed

tlog-cosignature: Zero timestamps for subtrees are still a little odd Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#345 · 5 comments · 1 reaction · Opened Sep 17, 2026
COCKTAIL-DKG: Use of non-zero functions to prevent zero-share issues? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

C2SP/C2SP#338 · Opened Sep 8, 2026
tlog-mirror: outdated link to tlog-witness Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

C2SP/C2SP#325 · 1 comment · Opened Aug 24, 2026
passkey-record: additional parameters Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

C2SP/C2SP#318 · Opened Aug 19, 2026
COCKTAIL-DKG: feedback on v0.2.1 Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

C2SP/C2SP#299 · Opened Jul 13, 2026
tlog-mirror: (possibly mtc-tlog:) accepted logs Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#298 · 3 comments · Opened Jul 13, 2026
tlog-tiles: Ed25519 requirement is too strong mid PQ transition Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

C2SP/C2SP#275 · 5 comments · Opened Jun 25, 2026
tlog-checkpoint: Specify that there can't be multiple signature lines with the same key name and key id Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

C2SP/C2SP#257 · Opened Jun 2, 2026
https-bastion: Suggestions and concerns Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

C2SP/C2SP#252 · 2 comments · Opened May 17, 2026
tlog-checkpoint: limit log origin line size Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

C2SP/C2SP#242 · Opened Apr 21, 2026
tlog-cosignature: Stop cosigning extension lines Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

C2SP/C2SP#238 · Opened Apr 10, 2026
tlog-mirror: add-checkpoint should return text/x.tlog.mirror-info Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

C2SP/C2SP#221 · 4 comments · Opened Mar 20, 2026
CCP-SIV: add a Python reference implementation Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

C2SP/C2SP#200 · 1 comment · Opened Jan 24, 2026
well-known-public-keys: a spec for sharing public keys over TLS. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#192 · 10 comments · Opened Dec 16, 2025
XAES-256-GCM: test vectors for KC-XAES variant Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

C2SP/C2SP#173 · 2 comments · Opened Oct 29, 2025
tlog-tiles: endpoint immutability Open

Difficulty 5/5 Over a week Newbie friendliness 32/100

C2SP/C2SP#145 · 9 comments · Opened Jun 26, 2025
signed-note: seemingly wrong different ID generation for ECDSA Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

C2SP/C2SP#135 · 1 comment · Opened Jun 6, 2025
tlog-witness: No notion of Log Provider authentication Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#115 · 7 comments · Opened Feb 27, 2025
chacha8rand: provide C reference implementation Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#100 · Opened Sep 9, 2024
tlog-checkpoint: Add test vectors Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

C2SP/C2SP#99 · 1 comment · Opened Sep 9, 2024
tlog-tiles: forbid logs from returning a 200 status for non-existent tiles Open

Difficulty 1/5 Under an hour Newbie friendliness 35/100

C2SP/C2SP#84 · 1 comment · Opened Jun 27, 2024
Wycheproof Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

C2SP/C2SP#67 · 10 comments · Opened Mar 23, 2024
tlog-checkpoint: set a maximum size Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

C2SP/C2SP#62 · Opened Mar 18, 2024
meta: make it easy to add lints Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

C2SP/C2SP#59 · Opened Mar 12, 2024
meta: maybe switch from branch protection to rulesets Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

C2SP/C2SP#58 · 2 comments · 1 reaction · Opened Mar 8, 2024
chacha8rand: Fix typo Open

C2SP/C2SP#48 · 1 assignee · Opened Nov 21, 2023
chacha8rand: Specify counter in state compression encoding Open

C2SP/C2SP#47 · 1 assignee · Opened Nov 21, 2023
chacha8rand: Define or reference key-erasure Open

C2SP/C2SP#46 · 1 assignee · Opened Nov 21, 2023
age: Integration with OpenPGP Card without a Plugin Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

C2SP/C2SP#40 · 1 comment · Opened Oct 5, 2023
age-plugin: Decide whether or not to allow secret keys to be "annotated" as such Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#34 · 1 comment · Opened May 23, 2023
age-plugin: Confirm whether shell aliases work for aliasing plugins Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

C2SP/C2SP#33 · 2 comments · Opened May 23, 2023
age-plugin: Specify error handling Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

C2SP/C2SP#32 · 1 reaction · Opened May 22, 2023
age: streaming header MAC calculations Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#28 · 1 comment · Opened Feb 19, 2023
MPC specs for threshold signatures Open

new spec

Difficulty 5/5 Over a week Newbie friendliness 20/100

C2SP/C2SP#25 · Opened Nov 22, 2022
age: is RFC 7539 reference wrong? Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

C2SP/C2SP#21 · 1 comment · Opened Oct 19, 2022
How to expose a prime order group API for curves Open

new spec

Difficulty 5/5 Over a week Newbie friendliness 25/100

C2SP/C2SP#1 · 2 reactions · Opened Dec 27, 2020

C2SP/C2SP

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