ed25519-unsafe-libs
List of unsafe ed25519 signature libs (by MystenLabs)
ctf
Ctf solutions from p4 team (by p4-team)
ed25519-unsafe-libs | ctf | |
---|---|---|
5 | 11 | |
212 | 1,743 | |
-0.5% | 0.3% | |
3.8 | 2.5 | |
6 months ago | about 1 year ago | |
Rust | Python | |
MIT License | - |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ed25519-unsafe-libs
Posts with mentions or reviews of ed25519-unsafe-libs.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-07-04.
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Is my transaction signature system secure for my blockchain? (audit)
I tried to explain to you last time you asked about "your own crypto" that the answer always will be "it's not good, don't do it". First thing that strikes me is that you take public key from the provided data, which suggests a trivial attack like in https://github.com/MystenLabs/ed25519-unsafe-libs
- Vulnerability in the elliptic curve lib used by Trezor (among others)! Has this been disclosed by Trezor team?
- List of unsafe ed25519 signature libs
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Initial impact report about this week's EdDSA Double-PubKey Oracle attack in 40 affected crypto libs
original findings and audit report by MystenLabs' Cryptography Chief + continuously updated list of affected libs: https://github.com/MystenLabs/ed25519-unsafe-libs
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40 unsafe ed25519 libs where private key can be leaked via signing api misuse
TL;DR A new audit report revealed that the signing api of many ed25519 libs (some of them very popular) unfortunately expects a public key as input. An attacker may extract the private key by requesting two different signatures for the same message and private key, but on purpose for a different public key. Applications should not expose this api publicly and should refactor it to protect devs against accidental api misuse. Read more: https://github.com/MystenLabs/ed25519-unsafe-libs and https://blog.safeheron.com/blog/safeheron-originals/analysis-on-ed25519-use-risks-your-wallet-private-key-can-be-stolen
ctf
Posts with mentions or reviews of ctf.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-06-24.
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Audio Steganography
Audio can contain dial tones, or it can contain binary/morse code on some particular frequency, or it's not really "audio" but radio-transmission which needs to be decoded, or the audio can contain sounds of keyboard typing or even 3d printer head moving (like https://github.com/p4-team/ctf/tree/master/2020-05-10-spam-and-flags-teaser/3d_printer ), or maybe audio has multiple sources interleaved and you need to separate them and one has the flag, or maybe the audio file itself has specific format and some information can be passed there. There are infinite possibilities and it's impossible to say anything without analysing the file.
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Failing to understand a flag
It's hard to say anything without actually seeing the page. Was there something inside the CSS files? You can do some crazy stuff there :) You can also do some fancy stuff like bypassing CSRF with CSS injection like in: https://github.com/p4-team/ctf/tree/master/2018-01-20-insomnihack/web_css
- CTF Question - reverse engineering keyboard Morse code
- Question about ECDSA
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Stuck on a forensics challenge
One thing that immediately comes into mind is that archives are "weird", and an archive file can be also a totally different type of file at the same time. Just to clarify what I mean see: https://github.com/p4-team/ctf/blob/master/2016-04-15-plaid-ctf/web_pixelshop/README.md and specifically the magic file https://github.com/p4-team/ctf/blob/master/2016-04-15-plaid-ctf/web_pixelshop/exploit.png this is totally valid PNG file but at the same time it's also totally valid ZIP file with PHP shell inside.
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Initial impact report about this week's EdDSA Double-PubKey Oracle attack in 40 affected crypto libs
Funny part is that even in CTF challenges made around this problem challenge authors were introducing some intentional bugs to account for this scenario, because they thought it would be too unrealistic otherwise :D See for example: https://github.com/p4-team/ctf/tree/master/2018-12-08-hxp/crypto_uff
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Reduced Round AES CTR Attacks
See: https://github.com/p4-team/ctf/tree/master/2016-03-12-0ctf/peoples_square and also https://github.com/TFNS/writeups/tree/master/2020-06-05-DefenitCTF/spn (this one is not AES but some toy SPN, but the idea is exactly the same and maybe easier to understand)
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Hey I was wondering if anyone knew a good place to post a challenge, a challenge with a reward
If it's some serious interesting cryptography (just to give you an example: https://github.com/p4-team/ctf/tree/master/2019-11-02-google-ctf/fractorization ), then perhaps consider talking to some CTF team to feature your challenge during an upcoming CTF
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Help with factorizing n=p*q in an vulnerable RSA implementation
Also what you need doesn't require that much code, it's very similar to: https://github.com/p4-team/ctf/tree/master/2017-09-02-tokyo/crypto_rsa
- Cryptopals 2:12 - What real-world application of crypto does the solution actually break?
What are some alternatives?
When comparing ed25519-unsafe-libs and ctf you can also consider the following projects:
trezor-firmware - :lock: Trezor Firmware Monorepo
CTFd - CTFs as you need them
libsodium - A modern, portable, easy to use crypto library.
RootTheBox - A Game of Hackers (CTF Scoreboard & Game Manager)
fastcrypto - Common cryptographic library used in software at Mysten Labs.
pwntools - CTF framework and exploit development library
ed25519-dalek - Fast and efficient ed25519 signing and verification in Rust.
paseto - Platform-Agnostic Security Tokens
pwndbg - Exploit Development and Reverse Engineering with GDB Made Easy