Displaying 1 to 8 from 8 results

phpseclib - PHP Secure Communications Library

  •    PHP

To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.

oscrypto - Compiler-free Python crypto library backed by the OS, supporting CPython and PyPy

  •    Python

A compilation-free, always up-to-date encryption library for Python that works on Windows, OS X, Linux and BSD. Supports the following versions of Python: 2.6, 2.7, 3.2, 3.3, 3.4, 3.5, 3.6 and pypy. OS X 10.6 will not be supported due to a lack of available cryptographic primitives and due to lack of vendor support.

DSAregenK - Recover the private key from signed DSA messages

  •    Python

Given two+ signed message hashes h(mA),h(mB) with signatures (rA,sA) and (rB,sB) where rA==rB and shared public_key coefficients (at least subprime q) one can reconstruct the private key used to sign these messages. If we manage to find a 'k' so that g^k mod p mod q == 'r' we can reconstruct the private_key 'x'. Remember 'g' is part of the public_key.

ecdsa-private-key-recovery - A simple library to recover the private key of ECDSA and DSA signatures sharing the same nonce k and therefore having identical signature parameter r

  •    Python

Let's recover the private-key for two signatures sharing the same nonce k. Note how chosing the same nonce k results in both signatures having an identical signature value r. To find good candidates for an ECDSA nonce reuse check for signatures sharing the same r, pubkey on curve for different messages (or hashes). E.g. blockchain projects based off bitcoind are usually good sources of ECDSA signature material. The library is written in a way that it tries to upgrade pubkey only ecdsa objects to private key enabled ecdsa objects upon successful recovery. This makes it easy to work with recovered key objects. The library performs both ECDSA and DSA key recovery.

data-standards-authority - Collaboration space for working on data standards and guidance for the DSA

  •    Javascript

We're the Data Standards Authority team, working to improve how the public sector manages data. We're establishing standards, writing guidance and building things to make it easier and more effective to share and use data across government.

mirage-crypto - Cryptographic primitives for MirageOS

  •    C

mirage-crypto is a small cryptographic library that puts emphasis on the applicative style and ease of use. It includes basic ciphers (AES, 3DES, RC4, ChaCha20/Poly1305), hashes (MD5, SHA1, SHA2 family), AEAD primitives (AES-GCM, AES-CCM), public-key primitives (RSA, DSA, DH) and a strong RNG (Fortuna). RSA timing attacks are countered by blinding. AES timing attacks are avoided by delegating to AES-NI.

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