Hi,
There must be something wrong with my assumptions or theory while I can get
connected openssl client and server with different certs.
What I do is:
create CA:
openssl genrsa -out ca_key.pem 1024
openssl req -config openssl.cnf -new -x509 -key ca_key.pem -out
ca.crt
create server and client certs:
openssl req -config openssl.cnf -newkey rsa:1024 -keyout
server_key.pem -out server.csr -nodes
openssl ca -config openssl.cnf -keyfile ca_key.pem -cert ca.crt -in
server.csr -out server.crt -notext
openssl req -config openssl.cnf -newkey rsa:1024 -keyout
client_key.pem -out client.csr -nodes
openssl ca -config openssl.cnf -keyfile ca_key.pem -cert ca.crt -in
client.csr -out client.crt -notext
create another CA:
openssl req -config openssl.cnf -newkey rsa:1024 -keyout
another_client_key.pem -out another_client.csr -nodes
openssl ca -config openssl.cnf -keyfile another_ca_key.pem -cert
another_ca.crt -in another_client.csr -out another_client.crt -notext
create another client cert:
openssl req -config openssl.cnf -newkey rsa:1024 -keyout
another_client_key.pem -out another_client.csr -nodes
openssl ca -config openssl.cnf -keyfile another_ca_key.pem -cert
another_ca.crt -in another_client.csr -out another_client.crt -notext
When I start server and client using same CA I get the connection right:
openssl s_server -accept 3333 -cert server.crt -key server_key.pem
-state -ssl3 -CAfile ca.crt -Verify 1
openssl s_client -connect 127.0.0.1:3333 -cert client.crt -key
client_key.pem -CAfile ca.crt -verify 1
Server accepts connection and client connects with `Verify return code: 0
(ok)`. Messages can be send and recieved. Nice.
Now, when I start the same server and client using `another_` CA it connects
the same way:
openssl s_server -accept 3333 -cert server.crt -key server_key.pem
-state -ssl3 -CAfile ca.crt -Verify 1
openssl s_client -connect 127.0.0.1:3333 -cert another_client.crt
-key another_client_key.pem -CAfile another_ca.crt -verify 1
This time the client says `Verify return code: 19 (self signed certificate
in certificate chain)`, but server did accept the client event with totally
different cert and CA and event let it speak with it! So wtf? How can I
authentify the client and not to let unknown clients to connect to my server
securely? Please help :-(
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