I'm trying to secure a connection from a Java Client/Server application that communicates over the Internet. My idea was to use SSL sockets with self-signed certificates and client authentication. I did the following:
- Server: Keystore containing new self-signed certificate.
keytool -genkey -kelalg RSA ... - Client: Keystore containing new self-signed certificate.
keytool -genkey -kelalg RSA ... - Server: Truststore containing exported client certificate (from bullet point above).
keytool -exportto export client certificate andkeytool -import -v -trustcacertsto import it into the server's truststore - Client: Truststore containing exported server certificate (from first bullet point).
keytool -exportto export server certificate andkeytool -import -v -trustcacertsto import it into the client's truststore
Trust- and keystores are attached correctly to the server/client. I can see the certificates being loaded (SSL debug information). But the whole thing doesn't work. During the SSL handshake, I get the following error (SSL debug information):
main, WRITE: TLSv1 Handshake, length = 897
main, READ: TLSv1 Handshake, length = 141
*** Certificate chain
***
main, SEND TLSv1 ALERT: fatal, description = bad_certificate
main, WRITE: TLSv1 Alert, length = 2
main, called closeSocket()
main, handling exception: javax.net.ssl.SSLHandshakeException: null cert chain
main, IOException in getSession(): javax.net.ssl.SSLHandshakeException: null cert chain
javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated
at com.sun.net.ssl.internal.ssl.SSLSessionImpl.getPeerCertificateChain(Unknown Source)
at sslsocket.Server.getClientDistinguishedName(Server.java:86)
at sslsocket.Server.main(Server.java:37)
When I disable client side authentication, it works flawlessly.
I'd really appreciate some help. Thank you very much!
Below you find the full, but anonymized output from the server:
Initializing SSL
***
found key for : server
chain [0] = [
[
Version: V3
Subject: CN=xxxxxx Server, OU=communication, O=xxxxxx, L=Zuerich, ST=ZH, C=CH
Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5
Key: Sun RSA public key, 1024 bits
modulus: 9487726xxxxxx15617628447913191
public exponent: 65537
Validity: [From: Thu Dec 09 17:04:05 CET 2010,
To: Wed Jul 03 18:04:05 CEST 2109]
Issuer: CN=xxxxxx Server, OU=communication, O=xxxxxx, L=Zuerich, ST=ZH, C=CH
SerialNumber: [ 4dxxxxxx5]
]
Algorithm: [SHA1withRSA]
Signature:
0000: 6F 06 1D EA E9 DC 5B 5D EC EB 33 D4 47 01 94 1A o.....[]..3.G...
xxxxxx
0070: 99 78 C4 31 5F 84 8F 7B C1 2F 10 A1 9F 50 72 A1 .x.1_..../...Pr.
]
***
adding as trusted cert:
Subject: CN=xxxxxx Client, OU=communication, O=xxxxxx, L=Zuerich, ST=ZH, C=CH
Issuer: CN=xxxxxx Client, OU=communication, O=xxxxxx, L=Zuerich, ST=ZH, C=CH
Algorithm: RSA; Serial number: 0x4xxxxxx0
Valid from Thu Dec 09 17:06:56 CET 2010 until Wed Jul 03 18:06:56 CEST 2109
trigger seeding of SecureRandom
done seeding SecureRandom
Opening socket
Waiting for clients...
Allow unsafe renegotiation: false
Allow legacy hello messages: true
Is initial handshake: true
Is secure renegotiation: false
matching alias: server
main, called closeSocket()
Allow unsafe renegotiation: false
Allow legacy hello messages: true
Is initial handshake: true
Is secure renegotiation: false
[read] MD5 and SHA1 hashes: len = 3
0000: 01 03 01 ...
[read] MD5 and SHA1 hashes: len = 98
0000: 00 3C 00 00 00 20 00 00 04 01 00 80 00 00 05 00 .<... ..........
xxxxxx
0060: 26 51 &Q
main, READ: SSL v2, contentType = Handshake, translated length = 75
*** ClientHello, TLSv1
RandomCookie: GMT: 1292088238 bytes = { 223,xxxxxx, 81 }
Session ID: {}
Cipher Suites: [SSL_RSA_WITH_RC4_128_MD5, SSL_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_DSS_WITH_AES_128_CBC_SHA, SSL_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA, SSL_RSA_WITH_DES_CBC_SHA, SSL_DHE_RSA_WITH_DES_CBC_SHA, SSL_DHE_DSS_WITH_DES_CBC_SHA, SSL_RSA_EXPORT_WITH_RC4_40_MD5, SSL_RSA_EXPORT_WITH_DES40_CBC_SHA, SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA, SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA, TLS_EMPTY_RENEGOTIATION_INFO_SCSV]
Compression Methods: { 0 }
***
%% Created: [Session-1, SSL_RSA_WITH_RC4_128_MD5]
*** ServerHello, TLSv1
RandomCookie: GMT: 1292088238 bytes = { 222,xxxxxx, 241 }
Session ID: {77,xxxxxx, 235}
Cipher Suite: SSL_RSA_WITH_RC4_128_MD5
Compression Method: 0
Extension renegotiation_info, renegotiated_connection: <empty>
***
Cipher suite: SSL_RSA_WITH_RC4_128_MD5
*** Certificate chain
chain [0] = [
[
Version: V3
Subject: CN=xxxxxx Server, OU=communication, O=xxxxxx, L=Zuerich, ST=ZH, C=CH
Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5
Key: Sun RSA public key, 1024 bits
modulus: 948772xxxxxx17628447913191
public exponent: 65537
Validity: [From: Thu Dec 09 17:04:05 CET 2010,
To: Wed Jul 03 18:04:05 CEST 2109]
Issuer: CN=xxxxxx Server, OU=communication, O=xxxxxx, L=Zuerich, ST=ZH, C=CH
SerialNumber: [ 4d00fdf5]
]
Algorithm: [SHA1withRSA]
Signature:
0000: 6F 06 1D EA E9 DC 5B 5D EC EB 33 D4 47 01 94 1A o.....[]..3.G...
xxxxxx
0070: 99 78 C4 31 5F 84 8F 7B C1 2F 10 A1 9F 50 72 A1 .x.1_..../...Pr.
]
***
*** CertificateRequest
Cert Types: RSA, DSS
Cert Authorities:
<CN=xxxxxx Client, OU=communication, O=xxxxxx, L=Zuerich, ST=ZH, C=CH>
*** ServerHelloDone
[write] MD5 and SHA1 hashes: len = 897
0000: 02 00 00 4D 03 01 4D 04 B4 AE DE E4 AF 62 FA 48 ...M..M......b.H
0xxxxxx
0380: 00 .
main, WRITE: TLSv1 Handshake, length = 897
main, READ: TLSv1 Handshake, length = 141
*** Certificate chain
***
main, SEND TLSv1 ALERT: fatal, description = bad_certificate
main, WRITE: TLSv1 Alert, length = 2
main, called closeSocket()
main, handling exception: javax.net.ssl.SSLHandshakeException: null cert chain
main, IOException in getSession(): javax.net.ssl.SSLHandshakeException: null cert chain
javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated
at com.sun.net.ssl.internal.ssl.SSLSessionImpl.getPeerCertificateChain(Unknown Source)
at sslsocket.Server.getClientDistinguishedName(Server.java:86)
at sslsocket.Server.main(Server.java:37)
