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cronokirby.com | ||
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keymaterial.net
One weird hobby of mine is reasonable properties of cryptographic schemes that nobody promised they do or don't have. Whether that's invisible salamanders or binding through shared secrets, anything that isn't just boring IND-CCA2 or existential unforgeability is just delightful material to construct vulnerabilities with. Normally, with a signature scheme, you have the public key... |
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neilmadden.blog
Wikipedia's definition of a digital signature is: A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature on a message gives a recipient confidence that the message came from a sender known to the recipient. -Wikipedia They also have a handy diagram of the process... |
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blog.cr.yp.to
[AI summary] The text discusses the complexities and security concerns of the ECDSA (Elliptic Curve Digital Signature Algorithm) compared to more modern signature systems like Ed25519. It highlights issues such as the lack of constant-time implementations in ECDSA, the importance of secure random number generation (RNG) for generating nonces (k), and the vulnerabilities that can arise from poor RNG practices. The text also compares ECDSA with alternatives like Ed25519, which uses deterministic methods for generating k, thus avoiding the need for an RNG and enhancing security. Additionally, it touches on the design of secure RNGs, the role of hash functions in generating k, and the potential for attacks due to non-constant-time implementations and poor random... |
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njwildberger.com
Our paper "A Hyper-Catalan Series Solution to Polynomial Equations, and the Geode" is now available at Taylor and Francis Online. It will appear next month in print form in the American Mathematical Monthly. Here is the link to the paper: https://www.tandfonline.com/doi/full/10.1080/00029890.2025.2460966 From the Abstract: The Catalan numbers? ?count the number of subdivisions of a polygon... |
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