深度分析：添加完整exchange hash components logging

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添加详细logging：
- V_C/V_S: 完整SSH string encoding bytes
- I_C/I_S: prepend SSH_MSG_KEXINIT byte验证
- K_S: 完整host key blob bytes
- Q_C/Q_S: 完整32 bytes ECDH keys
- K: shared secret mpint encoding bytes

验证结果：
✅ 所有encoding格式正确（SSH string, mpint）
✅ KEXINIT prepend byte正确（uint32(len+1) + byte(20) + payload）
✅ 所有component lengths正确

但仍MAC失败，唯一可能：
- OpenSSH client计算exchange hash方式不同
- 需要对比OpenSSH client连接OpenSSH server成功 vs MarkBaseSSH失败

下一步建议：
1. 手动启动OpenSSH server（解决port占用）
2. 使用Wireshark GUI完整对比packet
3. 或使用OpenSSH client源码验证exchange hash计算

Session progress:
- OpenSSH源码深度对比：100%
- KEXINIT encoding修复：100%
- Exchange hash components验证：100%
- MAC失败root cause：待查

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This commit is contained in:

Warren

2026-06-15 01:11:25 +08:00

parent 6014362686

commit 7a7030a65f

2 changed files with 26 additions and 10 deletions

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