ECDSA is a signature algorithm. It is the elliptic curve (EC) implementation of the digital signature algorithm (DSA).
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Using same keypair for Diffie-Hellman and signing
Are there any security risks using a single key-pair for both key-exchange and signing?
I'm mainly interested in using Curve25519 for key-exchange and Ed25519 for signing. But similar combinations, ...
3
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2answers
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How is the x coordinate of a “point at infinity” encoded in a Secp256k1 signature?
I'm testing an implementation of Bitcoin, which uses the curve Secp256k1 for ECDSA, and I want to see how it handles the point at infinity (0) if present in a signature. For example, r could be the x ...
