标签：Certificate certificate server rfc4246 Client key message public MUST
https://datatracker.ietf.org/doc/html/rfc5246
7.4.6. Client Certificate
When this message will be sent:
This is the first message the client can send after receiving a
ServerHelloDone message. This message is only sent if the server
requests a certificate. If no suitable certificate is available,
the client MUST send a certificate message containing no
certificates. That is, the certificate_list structure has a
length of zero. If the client does not send any certificates, the
server MAY at its discretion自由裁量权 either continue the handshake without
client authentication, or respond with a fatal handshake_failure
alert. Also, if some aspect of the certificate chain was
unacceptable (e.g., it was not signed by a known, trusted CA), the
server MAY at its discretion either continue the handshake
(considering the client unauthenticated) or send a fatal alert.
Client certificates are sent using the Certificate structure
defined in Section 7.4.2.
Meaning of this message:
This message conveys传送 the client's certificate chain to the server;
the server will use it when verifying the CertificateVerify
message (when the client authentication is based on signing) or
calculating the premaster secret (for non-ephemeral Diffie-
Hellman). The certificate MUST be appropriate for the negotiated
cipher suite's key exchange algorithm, and any negotiated
extensions.
In particular:
- The certificate type MUST be X.509v3, unless explicitly negotiated
otherwise (e.g., [TLSPGP]).
- The end-entity certificate's public key (and associated
restrictions) has to be compatible with the certificate types
listed in CertificateRequest:
Client Cert. Type Certificate Key Type
rsa_sign RSA public key; the certificate MUST allow the
key to be used for signing with the signature
scheme and hash algorithm that will be
employed in the certificate verify message.
dss_sign DSA public key; the certificate MUST allow the
key to be used for signing with the hash
algorithm that will be employed in the
certificate verify message.
ecdsa_sign ECDSA-capable public key; the certificate MUST
allow the key to be used for signing with the
hash algorithm that will be employed in the
certificate verify message; the public key
MUST use a curve and point format supported by
the server.
rsa_fixed_dh Diffie-Hellman public key; MUST use the same
dss_fixed_dh parameters as server's key.
rsa_fixed_ecdh ECDH-capable public key; MUST use the
ecdsa_fixed_ecdh same curve as the server's key, and MUST use a
point format supported by the server.
- If the certificate_authorities list in the certificate request
message was non-empty, one of the certificates in the certificate
chain SHOULD be issued by one of the listed CAs.
- The certificates MUST be signed using an acceptable hash/
signature algorithm pair, as described in Section 7.4.4. Note
that this relaxes the constraints on certificate-signing
algorithms found in prior versions of TLS.
Note that, as with the server certificate, there are certificates
that use algorithms/algorithm combinations that cannot be currently
used with TLS.
标签：Certificate,certificate,server,rfc4246,Client,key,message,public,MUST 来源： https://www.cnblogs.com/chucklu/p/15671817.html
本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享； 2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关； 3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关； 4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除； 5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。