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markbase/markbase-core
Warren ec4674ffb7
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feat(ssh): implement session key derivation
SSH会话密钥实现完成:

实现内容:
1. KexExchangeHandler保存shared_secret和public_keys
   - shared_secret字段(Option<Vec<u8>>)
   - client_public_key字段
   - server_public_key字段

2. compute_session_keys()方法实现
   - 从保存的shared_secret计算会话密钥
   - 使用SessionKeys::derive()方法
   - 返回真实SessionKeys(而非临时默认密钥)

3. server.rs使用真实会话密钥
   - perform_complete_kex_exchange调用compute_session_keys()
   - EncryptionContext::from_session_keys()
   - 初始化真实加密上下文

测试结果:
-  Connection established
-  SSH2_MSG_KEX_ECDH_REPLY received(签名验证成功)
-  SSH2_MSG_NEWKEYS sent/received(加密通道建立)
- 🆕 SSH_MSG_SERVICE_REQUEST sent(客户端尝试认证)
-  Connection reset(服务器无法处理加密packet)

进展对比:
- 之前:Bad packet length错误
- 现在:客户端成功发送SERVICE_REQUEST,连接重置

下一步:
- perform_ssh_auth()使用EncryptedPacket
- 实现EncryptedPacket::read()
- 完成加密packet处理
2026-06-13 21:20:52 +08:00
..