==== clean ==== rm -f a.out [Ee]rrs mklog *.core *.o.tmp y.tab.h *.pem *.serial *.txt *.attr *.old stamp-clean stamp-root.serial stamp-intermediate.serial stamp-root.txt stamp-intermediate.txt ==== root.serial ==== echo 1000 >root.serial ==== intermediate.serial ==== echo 1000 >intermediate.serial ==== root.txt ==== true >root.txt ==== intermediate.txt ==== true >intermediate.txt ==== run-verify-intermediate ==== # generate root rsa 4096 key openssl genrsa -out root.key.pem 4096 Generating RSA private key, 4096 bit long modulus .............. ........................................................................................................................................................................................................................................................... e is 65537 (0x010001) # generate root cert openssl req -batch -config /home/src/regress/lib/libcrypto/CA/root.cnf -key root.key.pem -new -x509 -days 365 -sha256 -extensions v3_ca -out root.cert.pem # generate intermediate rsa 2048 key openssl genrsa -out intermediate.key.pem 2048 Generating RSA private key, 2048 bit long modulus ...................... ....................... e is 65537 (0x010001) # generate intermediate req openssl req -batch -config /home/src/regress/lib/libcrypto/CA/intermediate.cnf -new -sha256 -key intermediate.key.pem -out intermediate.csr.pem # sign intermediate openssl ca -batch -config /home/src/regress/lib/libcrypto/CA/root.cnf -extensions v3_intermediate_ca -days 10 -notext -md sha256 -in intermediate.csr.pem -out intermediate.cert.pem Using configuration from /home/src/regress/lib/libcrypto/CA/root.cnf Check that the request matches the signature Signature ok Certificate Details: Serial Number: 4096 (0x1000) Validity Not Before: Jan 31 01:38:41 2026 GMT Not After : Feb 10 01:38:41 2026 GMT Subject: countryName = CA stateOrProvinceName = Alberta organizationName = OpenBSD organizationalUnitName = So and Sos commonName = Regress Intermediate CA emailAddress = evilsoandsos@openbsd.org X509v3 extensions: X509v3 Subject Key Identifier: 6C:40:00:86:92:21:B9:FB:CB:B5:9C:63:8F:81:1A:F5:CB:50:4A:70 X509v3 Authority Key Identifier: keyid:71:CB:9E:02:49:C2:39:85:0C:98:74:18:10:D4:A2:46:55:93:52:C2 X509v3 Basic Constraints: critical CA:TRUE, pathlen:0 X509v3 Key Usage: critical Digital Signature, Certificate Sign, CRL Sign X509v3 Name Constraints: critical Permitted: DNS:.openbsd.org DNS:client email:openbsd.org email:@test.openbsd.org URI:.openbsd.org DirName: C = CA, O = OpenBSD othername: Excluded: IP:0.0.0.0/0.0.0.0 IP:0:0:0:0:0:0:0:0/0:0:0:0:0:0:0:0 Certificate is to be certified until Feb 10 01:38:41 2026 GMT (10 days) Write out database with 1 new entries Data Base Updated # validate intermediate CA openssl verify -CAfile root.cert.pem intermediate.cert.pem intermediate.cert.pem: OK ==== run-verify-server ==== cat intermediate.cert.pem root.cert.pem > chain.pem # genrsa server openssl genrsa -out server.key.pem 2048 Generating RSA private key, 2048 bit long modulus ...................................................................... ..................................... e is 65537 (0x010001) # server req openssl req -batch -config /home/src/regress/lib/libcrypto/CA/intermediate.cnf -new -sha256 -subj '/CN=server.openbsd.org/OU=So and Sos/O=OpenBSD/C=CA' -key server.key.pem -out server.csr.pem # server sign openssl ca -batch -config /home/src/regress/lib/libcrypto/CA/intermediate.cnf -extensions server_cert -days 5 -notext -md sha256 -in server.csr.pem -out server.cert.pem Using configuration from /home/src/regress/lib/libcrypto/CA/intermediate.cnf Check that the request matches the signature Signature ok Certificate Details: Serial Number: 4096 (0x1000) Validity Not Before: Jan 31 01:38:43 2026 GMT Not After : Feb 5 01:38:43 2026 GMT Subject: countryName = CA organizationName = OpenBSD organizationalUnitName = So and Sos commonName = server.openbsd.org X509v3 extensions: X509v3 Basic Constraints: CA:FALSE Netscape Cert Type: SSL Server Netscape Comment: OpenSSL Generated Server Certificate X509v3 Subject Key Identifier: D3:B1:F4:42:21:B4:2A:45:E8:F9:3A:03:74:9E:F1:78:2D:03:10:3E X509v3 Authority Key Identifier: keyid:6C:40:00:86:92:21:B9:FB:CB:B5:9C:63:8F:81:1A:F5:CB:50:4A:70 DirName:/C=CA/ST=Alberta/L=Edmonton/O=OpenBSD/OU=So and Sos/CN=Regress Root CA/emailAddress=evilsoandsos@openbsd.org serial:10:00 X509v3 Key Usage: critical Digital Signature, Key Encipherment X509v3 Extended Key Usage: TLS Web Server Authentication Certificate is to be certified until Feb 5 01:38:43 2026 GMT (5 days) Write out database with 1 new entries Data Base Updated # validate server cert openssl verify -purpose sslserver -CAfile chain.pem server.cert.pem server.cert.pem: OK ==== run-verify-client ==== # genrsa client openssl genrsa -out client.key.pem 2048 Generating RSA private key, 2048 bit long modulus .................................................................................................. ................................. e is 65537 (0x010001) # client req openssl req -batch -config /home/src/regress/lib/libcrypto/CA/intermediate.cnf -new -sha256 -subj '/CN=client/OU=So and Sos/O=OpenBSD/C=CA' -key client.key.pem -out client.csr.pem # client sign openssl ca -batch -config /home/src/regress/lib/libcrypto/CA/intermediate.cnf -extensions usr_cert -days 5 -notext -md sha256 -in client.csr.pem -out client.cert.pem Using configuration from /home/src/regress/lib/libcrypto/CA/intermediate.cnf Check that the request matches the signature Signature ok Certificate Details: Serial Number: 4097 (0x1001) Validity Not Before: Jan 31 01:38:45 2026 GMT Not After : Feb 5 01:38:45 2026 GMT Subject: countryName = CA organizationName = OpenBSD organizationalUnitName = So and Sos commonName = client X509v3 extensions: X509v3 Basic Constraints: CA:FALSE Netscape Cert Type: SSL Client, S/MIME Netscape Comment: OpenSSL Generated Client Certificate X509v3 Subject Key Identifier: 4D:8D:DE:CA:9F:45:33:00:41:EA:78:DA:1A:D8:93:AA:72:43:58:7F X509v3 Authority Key Identifier: keyid:6C:40:00:86:92:21:B9:FB:CB:B5:9C:63:8F:81:1A:F5:CB:50:4A:70 X509v3 Key Usage: critical Digital Signature, Non Repudiation, Key Encipherment X509v3 Extended Key Usage: TLS Web Client Authentication, E-mail Protection X509v3 Subject Alternative Name: critical email:evilsoandsos@test.openbsd.org Certificate is to be certified until Feb 5 01:38:45 2026 GMT (5 days) Write out database with 1 new entries Data Base Updated # validate client cert openssl verify -purpose sslclient -CAfile chain.pem client.cert.pem client.cert.pem: OK