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Implement X25519, X448, Ed25519 & Ed448 support #56

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Implement X25519, X448, Ed25519 & Ed448 support #56

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@ic0ns ic0ns commented Jun 26, 2025

Summary

  • Implemented support for X25519, X448, Ed25519, and Ed448 cryptographic algorithms
  • Added complete implementation including models, handlers, preparators, and parsers
  • Added comprehensive test coverage for all new functionality

Changes

  • Added public key models for all four Edwards curves
  • Implemented handlers to manage context updates during parsing and preparation
  • Created preparators to encode public keys (32 bytes for Ed25519/X25519, 56-57 bytes for Ed448/X448)
  • Added parsers to read Edwards curve public keys from ASN.1 octet strings
  • Extended X509CertificateConfig with fields and methods for Edwards curve keys
  • Extended X509Context with fields and methods for Edwards curve keys
  • Extended X509Chooser with methods to retrieve Edwards curve keys
  • Added comprehensive unit tests for all preparators

Test plan

  • All unit tests pass
  • Code compiles without errors
  • Code formatted with spotless
  • Tested key encoding for correct byte lengths (32 bytes for Ed25519/X25519, 56-57 bytes for Ed448/X448)

Implement X25519, X448, Ed25519 & Ed448 support
438c79f 
- Added public key models, handlers, preparators and parsers for all four Edwards curves
- Added configuration fields and methods for Edwards curve keys in X509CertificateConfig
- Added context fields and methods for Edwards curve keys in X509Context
- Added chooser methods for Edwards curve keys in X509Chooser
- Implemented key encoding in preparators (32 bytes for Ed25519/X25519, 56-57 bytes for Ed448/X448)
- Added comprehensive unit tests for all preparators
- All tests pass and code compiles successfully
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