Servicio de Directorio con OpenLDAP [6]: Certificados en Debian 7 “Wheezy”

El procedimiento de instalación y configuración del slapd, así como el resto de lo indicado en los dos artículos anteriores, con la excepción de la generación de los certificados, es válido para el Wheezy.

Emplearemos el estilo de la consola mayormente ya que se trata de comandos de consola. Dejamos todas las salidas para que ganemos en claridad y podamos leer con detenimiento cuales mensajes nos devuelve el proceso, que de otra forma casi nunca leemos detenidamente.

El mayor cuidado que debemos tener es cuando nos pregunten:

Common Name (e.g. server FQDN or YOUR name) []:mildap.amigos.cu

y debemos escribir el FQDN de nuestro servidor LDAP, que en nuestro caso es mildap.amigos.cu. De no hacerlo de esa forma, no funcionará correctamente el certificado.

Para obtener los certificados, seguiremos el siguiente procedimiento:

:~# mkdir /root/myca
:~# cd /root/myca/
:~/myca# /usr/lib/ssl/misc/CA.sh -newca
CA certificate filename (or enter to create)
Making CA certificate ...
Generating a 2048 bit RSA private key
................+++
....................................+++
writing new private key to './demoCA/private/./cakey.pem'
Enter PEM pass phrase:xeon
Verifying - Enter PEM pass phrase:xeon
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:CU
State or Province Name (full name) [Some-State]:Habana
Locality Name (eg, city) []:Habana
Organization Name (eg, company) [Internet Widgits Pty Ltd]:Freekes
Organizational Unit Name (eg, section) []:Freekes
Common Name (e.g. server FQDN or YOUR name) []:mildap.amigos.cu
Email Address []:frodo@amigos.cu

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:xeon
An optional company name []:Freekes
Using configuration from /usr/lib/ssl/openssl.cnf
Enter pass phrase for ./demoCA/private/./cakey.pem:xeon
Check that the request matches the signature
Signature ok
Certificate Details:
Serial Number:
bb:9c:1b:72:a7:1d:d1:e1
Validity
Not Before: Nov 21 05:23:50 2013 GMT
Not After : Nov 20 05:23:50 2016 GMT
Subject:
countryName               = CU
stateOrProvinceName       = Habana
organizationName          = Freekes
organizationalUnitName    = Freekes
commonName                = mildap.amigos.cu
emailAddress              = frodo@amigos.cu
X509v3 extensions:
X509v3 Subject Key Identifier:
79:B3:B2:F7:47:67:92:9F:8A:C2:1C:3C:1A:68:FD:D4:F6:D7:40:9A
X509v3 Authority Key Identifier:
keyid:79:B3:B2:F7:47:67:92:9F:8A:C2:1C:3C:1A:68:FD:D4:F6:D7:40:9A

X509v3 Basic Constraints:
CA:TRUE
Certificate is to be certified until Nov 20 05:23:50 2016 GMT (1095 days)

Write out database with 1 new entries
Data Base Updated
#######################################################################
#######################################################################
:~/myca# openssl req -new -nodes -keyout newreq.pem -out newreq.pem
Generating a 2048 bit RSA private key
.........+++
...........................................+++
writing new private key to 'newreq.pem'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:CU
State or Province Name (full name) [Some-State]:Habana
Locality Name (eg, city) []:Habana
Organization Name (eg, company) [Internet Widgits Pty Ltd]:Freekes
Organizational Unit Name (eg, section) []:Freekes
Common Name (e.g. server FQDN or YOUR name) []:mildap.amigos.cu
Email Address []:frodo@amigos.cu

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:xeon
An optional company name []:Freekes
########################################################################
########################################################################

:~/myca# /usr/lib/ssl/misc/CA.sh -sign
Using configuration from /usr/lib/ssl/openssl.cnf
Enter pass phrase for ./demoCA/private/cakey.pem:xeon
Check that the request matches the signature
Signature ok
Certificate Details:
Serial Number:
bb:9c:1b:72:a7:1d:d1:e2
Validity
Not Before: Nov 21 05:27:52 2013 GMT
Not After : Nov 21 05:27:52 2014 GMT
Subject:
countryName               = CU
stateOrProvinceName       = Habana
localityName              = Habana
organizationName          = Freekes
organizationalUnitName    = Freekes
commonName                = mildap.amigos.cu
emailAddress              = frodo@amigos.cu
X509v3 extensions:
X509v3 Basic Constraints:
CA:FALSE
Netscape Comment:
OpenSSL Generated Certificate
X509v3 Subject Key Identifier:
80:62:8C:44:5E:5C:B8:67:1F:E5:C3:50:29:86:BD:E4:15:72:34:98
X509v3 Authority Key Identifier:
keyid:79:B3:B2:F7:47:67:92:9F:8A:C2:1C:3C:1A:68:FD:D4:F6:D7:40:9A

Certificate is to be certified until Nov 21 05:27:52 2014 GMT (365 days)
Sign the certificate? [y/n]:y

1 out of 1 certificate requests certified, commit? [y/n]y
Write out database with 1 new entries
Data Base Updated
Certificate:
Data:
Version: 3 (0x2)
Serial Number:
bb:9c:1b:72:a7:1d:d1:e2
Signature Algorithm: sha1WithRSAEncryption
Issuer: C=CU, ST=Habana, O=Freekes, OU=Freekes, CN=mildap.amigos.cu/emailAddress=frodo@amigos.cu
Validity
Not Before: Nov 21 05:27:52 2013 GMT
Not After : Nov 21 05:27:52 2014 GMT
Subject: C=CU, ST=Habana, L=Habana, O=Freekes, OU=Freekes, CN=mildap.amigos.cu/emailAddress=frodo@amigos.cu
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
Public-Key: (2048 bit)
Modulus:
00:c7:52:49:72:dc:93:aa:bc:6c:59:00:5c:08:74:
e1:7a:d9:f4:06:04:a5:b5:47:16:6a:ee:e8:37:86:
57:cb:a8:2e:87:13:27:23:ab:5f:85:69:fd:df:ad:
db:00:83:43:4d:dc:4f:26:b8:62:d1:b7:5c:60:98:
61:89:ac:e5:e4:99:62:5d:36:cf:94:7d:59:b7:3b:
be:dd:14:0d:2e:a3:87:3a:0b:8f:d9:69:58:ee:1e:
82:a8:95:83:80:4b:92:9c:76:8e:35:90:d4:53:71:
b2:cf:88:2a:df:6f:17:d0:18:f3:a5:8c:1e:5f:5f:
05:7a:8d:1d:24:d8:cf:d6:11:50:0d:cf:18:2e:7d:
84:7c:3b:7b:20:b5:87:91:e5:ba:13:70:7b:79:3c:
4c:21:df:fb:c6:38:92:93:4d:a7:1c:aa:bd:30:4c:
61:e6:c8:8d:e4:e8:14:4f:75:37:9f:ae:b9:7b:31:
37:e9:bb:73:7f:82:c1:cc:92:21:fd:1a:05:ab:9e:
82:59:c8:f2:95:7c:6b:d4:97:48:8a:ce:c1:d1:26:
7f:be:38:0e:53:a7:03:c6:30:80:43:f4:f6:df:2e:
8f:62:48:a0:8c:30:6b:b6:ba:36:8e:3d:b9:67:a0:
48:a8:12:b7:c9:9a:c6:ba:f5:45:58:c7:a5:1a:e7:
4f:8b
Exponent: 65537 (0x10001)
X509v3 extensions:
X509v3 Basic Constraints:
CA:FALSE
Netscape Comment:
OpenSSL Generated Certificate
X509v3 Subject Key Identifier:
80:62:8C:44:5E:5C:B8:67:1F:E5:C3:50:29:86:BD:E4:15:72:34:98
X509v3 Authority Key Identifier:
keyid:79:B3:B2:F7:47:67:92:9F:8A:C2:1C:3C:1A:68:FD:D4:F6:D7:40:9A

Signature Algorithm: sha1WithRSAEncryption
66:20:5c:6f:58:c1:7d:d7:f6:a9:82:ab:2b:62:15:1f:31:5a:
56:82:0e:ff:73:4f:3f:9b:36:5e:68:24:b4:17:3f:fd:ed:9f:
96:43:70:f2:8b:5f:22:cc:ed:49:cf:84:f3:ce:90:58:fa:9b:
1d:bd:0b:cd:75:f3:3c:e5:fc:a8:e3:b7:8a:65:40:04:1e:61:
de:ea:84:39:93:81:c6:f6:9d:cf:5d:d7:35:96:1f:97:8d:dd:
8e:65:0b:d6:c4:01:a8:fc:4d:37:2d:d7:50:fd:f9:22:30:97:
45:f5:64:0e:fa:87:46:38:b3:6f:3f:0f:ef:60:ca:24:86:4d:
23:0c:79:4d:77:fb:f0:de:3f:2e:a3:07:4b:cd:1a:de:4f:f3:
7a:03:bf:a6:d4:fd:20:f5:17:6b:ac:a9:87:e8:71:01:d7:48:
8f:9a:f3:ed:43:60:58:73:62:b2:99:82:d7:98:97:45:09:90:
0c:21:02:82:3b:2a:e7:c7:fe:76:90:00:d9:db:87:c7:e5:93:
14:6a:6e:3b:fd:47:fc:d5:cd:95:a7:cc:ea:49:c0:64:c5:e7:
55:cd:2f:b1:e0:2b:3d:c4:a1:18:77:fb:73:93:69:92:dd:9d:
d8:a5:2b:5f:31:25:ea:94:67:49:4e:3f:05:bf:6c:97:a3:1b:
02:bf:2b:b0
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
Signed certificate is in newcert.pem
###################################################################
###################################################################

:~/myca# cp demoCA/cacert.pem /etc/ssl/certs/
:~/myca# mv newcert.pem /etc/ssl/certs/mildap-cert.pem
:~/myca# mv newreq.pem /etc/ssl/private/mildap-key.pem
:~/myca# chmod 600 /etc/ssl/private/mildap-key.pem

:~/myca# nano certinfo.ldif
dn: cn=config
add: olcTLSCACertificateFile
olcTLSCACertificateFile: /etc/ssl/certs/cacert.pem
-
add: olcTLSCertificateFile
olcTLSCertificateFile: /etc/ssl/certs/mildap-cert.pem
-
add: olcTLSCertificateKeyFile
olcTLSCertificateKeyFile: /etc/ssl/private/mildap-key.pem

:~/myca# ldapmodify -Y EXTERNAL -H ldapi:/// -f /root/myca/certinfo.ldif

:~/myca# aptitude install ssl-cert

:~/myca# adduser openldap ssl-cert
Añadiendo al usuario `openldap' al grupo `ssl-cert' ...
Añadiendo al usuario openldap al grupo ssl-cert
Hecho.
:~/myca# chgrp ssl-cert /etc/ssl/private/mildap-key.pem
:~/myca# chmod g+r /etc/ssl/private/mildap-key.pem
:~/myca# chmod o-r /etc/ssl/private/mildap-key.pem
:~/myca# service slapd restart
[ ok ] Stopping OpenLDAP: slapd.
[ ok ] Starting OpenLDAP: slapd.

:~/myca# tail /var/log/syslog

Con esta explicación y los artículos precedentes, ya podemos utilizar al Wheezy como sistema operativo para nuestro Servicio de Directorio.

Continúe con nosotros en la próxima entrega !!!.