签名健康检查
正在连接 443 端口、读取证书链、探测协议版本…
签名健康检查
正在连接 443 端口、读取证书链、探测协议版本…
签名健康检查
The server completed a TLS 1.0 handshake. TLS 1.0 (1999) was formally deprecated by RFC 8996 in 2021, lacks modern AEAD ciphers and downgrades every client that can be tricked into it. Some large operators keep it on deliberately for legacy clients, so this caps the grade at C rather than failing it outright — but the fix is the same: disable TLS 1.0 and 1.1 at the server or load balancer.
ECDSA P-256 is a sound choice today. It is, however, quantum-vulnerable: NIST IR 8547 (draft) plans to disallow classical signature algorithms — ECDSA, EdDSA and RSA — after 2035; at this key size there is no earlier 2030 milestone — that step covers only 112-bit parameter sets such as RSA-2048. No penalty and no emergency — but certificate rotation is the easy part; knowing everywhere else your systems sign is the real migration work.
ECDSA P-256 gives compact keys and signatures at full strength — the current best practice for TLS server certificates.
Valid until 2027-03-26 — 149 days remaining.
The handshake settled on TLS 1.3 with TLS_AES_256_GCM_SHA384 — the current protocol generation, with a cleaner handshake and only AEAD ciphers.
Every issuer → subject link matches; the root itself is omitted, which is normal (chain as served).
在该域名的证书到期前 30、14、7、3 和 1 天发送免费邮件提醒。双重确认：你确认之前不会发送任何邮件，且每封邮件都附有退订链接。你的地址只为这一用途保存。
我们如何处理你的地址，请参阅《隐私政策》。
此检测由我们的服务器执行：URL 中的域名会发送到 ecdsa.com，我们会连接该域名的 443 端口。除此之外不收集任何信息。证书链完全按服务器发送的内容评估——本报告描述的是配置情况，不会针对任何浏览器信任库执行完整的路径验证。