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2 个证书问题
OpenSSL used with CRLs and for some CA in the certificate chain its CRL is not included in TLSCRLFile
在 OpenSSL 对等体的情况下，TLS 服务器日志中显示：
failed to accept an incoming connection: from 127.0.0.1: TLS handshake with 127.0.0.1 returned error code 1: \
file s3_srvr.c line 3251: error:14089086: SSL routines:ssl3_get_client_certificate:certificate verify failed: \
TLS write fatal alert "unknown CA"在 GnuTLS 对等体的情况下，TLS 服务器日志中显示：
failed to accept an incoming connection: from 127.0.0.1: TLS handshake with 127.0.0.1 returned error code 1: \
file rsa_pk1.c line 103: error:0407006A: rsa routines:RSA_padding_check_PKCS1_type_1:\
block type is not 01 file rsa_eay.c line 705: error:04067072: rsa routines:RSA_EAY_PUBLIC_DECRYPT:paddinCRL 已过期或将在服务器运行期间过期
OpenSSL，在服务器日志中：
- 过期前：
cannot connect to proxy "proxy-openssl-1.0.1e": TCP successful, cannot establish TLS to [[127.0.0.1]:20004]:\
SSL_connect() returned SSL_ERROR_SSL: file s3_clnt.c line 1253: error:14090086:\
SSL routines:ssl3_get_server_certificate:certificate verify failed:\
TLS write fatal alert "certificate revoked"- after expiration:
{=html}
<!-- -->
cannot connect to proxy "proxy-openssl-1.0.1e": TCP successful, cannot establish TLS to [[127.0.0.1]:20004]:\
SSL_connect() returned SSL_ERROR_SSL: file s3_clnt.c line 1253: error:14090086:\
SSL routines:ssl3_get_server_certificate:certificate verify failed:\
TLS write fatal alert "certificate expired"The point here is that with valid CRL a revoked certificate is reported as "certificate revoked". When CRL expires the error message changes to "certificate expired" which is quite misleading.
GnuTLS, in server log:
- before and after expiration the same:
{=html}
<!-- -->无法连接到 proxy "proxy-openssl-1.0.1e"：TCP 成功，无法通过 TLS 连接到 [[127.0.0.1]:20004]:
无效的对等证书：该证书不可信。证书链已被吊销。
自签名证书，未知 CA
OpenSSL的日志中出现：
error:'self signed certificate: SSL_connect() set result code to SSL_ERROR_SSL: file ../ssl/statem/statem_clnt.c\
line 1924: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:\
TLS write fatal alert "unknown CA"'当服务器证书错误地具有相同的颁发者（Issuer）和主题（Subject）string时，会出现此问题，尽管该证书是由CA签名的。在根CA（Top-级）证书中，颁发者和主题可以相同，但在服务器证书中不允许相同。（此规则同样适用于proxy和agent证书。）
要检查证书是否包含相同的颁发者和主题条目，请运行以下命令：
openssl x509 -in <yourcertificate.crt> -noout -text根证书（Top-级）的颁发者（Issuer）和主题（Subject）值相同是可以接受的。