This is an implementation of EdDSA in Java. Structurally, it is based on the ref10 implementation in SUPERCOP (see http://ed25519.cr.yp.to/software.html). There are two internal implementations: * A port of the radix-2^51 operations in ref10 - fast and constant-time, but only useful for Ed25519. * A generic version using BigIntegers for calculation - a bit slower and not constant-time, but compatible with any EdDSA parameter specification.
Security Fix(es):
The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message Attacks) property. This allows attackers to create new valid signatures different from previous signatures for a known message.(CVE-2020-36843)
{ "severity": "Medium" }
{ "src": [ "ed25519-java-0.3.0-5.oe2403.src.rpm", "ed25519-java-0.3.0-5.oe2403sp1.src.rpm" ], "noarch": [ "ed25519-java-0.3.0-5.oe2403.noarch.rpm", "ed25519-java-javadoc-0.3.0-5.oe2403.noarch.rpm", "ed25519-java-0.3.0-5.oe2403sp1.noarch.rpm", "ed25519-java-javadoc-0.3.0-5.oe2403sp1.noarch.rpm" ] }