Openssl证书管理
来自Ubuntu中文
跳到导航跳到搜索
已整理部分
为CA创建一个RSA私钥
openssl genrsa -out ca.key 2048
利用CA的RSA私钥创建一个自签名的CA证书
openssl req -new -x509 -days 3650 -key ca.key -out ca.crt -extensions v3_ca -config openssl.cnf
python编程实现Demon
利用python pexpect模块来按照预定义的结果自动完成
#!/usr/bin/env python
'create CA cert '
import os
import pexpect
CA_KEY = "/mnt/home/panhaitao/ca/ca.key"
CA_CRT = "/mnt/home/panhaitao/ca/ca.crt"
CA_CONFIG = "/mnt/home/panhaitao/ca/openssl.cnf"
# 命令原型 openssl req -new -x509 -days 3650 -key ca.key -out ca.crt -extensions v3_ca -config openssl.cnf
child = pexpect.spawn('openssl req -new -x509 -days 3650 -key %s -out %s -extensions v3_ca -config %s '%(CA_KEY, CA_CRT, CA_CONFIG))
child.sendline ('\n')
child.sendline ('\n')
child.sendline ('\n')
child.sendline ('\n')
child.sendline ('\n')
child.sendline ('koji')
child.sendline ('\n')
print 'DONE'
为客户创建一个RSA私钥,并使用CA证书来对其签署
openssl genrsa -out client.key 2048 openssl req -new -nodes -key client.key -out client.csr -config openssl.cnf openssl ca -keyfile ca.key -cert ca.crt -in client.csr -out client.crt -outdir certs -config openssl.cnf cat client.crt client.key > client.pem
撤销一个客户证书
openssl ca -gencrl -out crl/sopac-ca.crl -config openssl.cnf
下面是收集整理的资料
openssl req -new -x509 -days 3650 -newkey rsa:2048 -keyout ca.key -out ca.crt -extensions v3_ca -config openssl.cnf 为客户颁发证书，为客户创建证书，先用genrsa命令生成的私钥，用req命令生成证书签署请求CSR
openssl genrsa -out client.key 2048 openssl req -new -nodes -key client.key -out client.csr -config openssl.cnf
openssl req -new -nodes -newkey rsa:2048 -keyout client.key -out client.csr -config openssl.cnf
openssl.cnf 解读
CSR (Certificate Signing Request) 证书签发请求
证书文件生成 也许很多人和本人一样深有体会，使用OpenSSL库写一个加密通讯过程，代码很容易就写出来了，可是整个工作却花了了好几天。除将程序编译成功外（没有可以使用的证书文件，编译成功了，它并不能跑起来，并不表示它能正常使用，所以......）,还需生成必要的证书和私钥文件使双方能够成功验证对方。 找了n多的资料，很多是说的很模糊，看了n多的英文资料，还是没有办法（不知道是不是外国朋友都比较厉害，不用说明得太清？），无意间找到yawl([email protected])写的文章，难得的汉字（呵呵）。里面有生成证书部分，说到生成了Certificate Signing Request (CSR)文件后，就有点不太清楚了。后面生成自签字证书在很多地方都可以找到的，签名这部分，yawl说mod_ssl有比较好的脚本，但是笔者一时找不到，就自己用openssl的ca命令来完成了，也不是很麻烦。 说说本人的操作环境：无盘工作站（有权限问题使用起来不太方便），操作目录是openssl/bin（没办法改不了环境变量，如果你可以改的话，就不用在这个目录下工作了），为了方便本人把apps下的openssl.cnf也复制到了这个目录下来。文件名都是以本人使用的来说了： 1.首先要生成服务器端的私钥(key文件): openssl genrsa -des3 -out server.key 1024 运行时会提示输入密码,此密码用于加密key文件(参数des3便是指加密算法,当然也可以选用其他你认为安全的算法.),以后每当需读取此文件(通过openssl提供的命令或API)都需输入口令.如果觉得不方便,也可以去除这个口令,但一定要采取其他的保护措施! 去除key文件口令的命令: openssl rsa -in server.key -out server.key 2.openssl req -new -key server.key -out server.csr -config openssl.cnf 生成Certificate Signing Request（CSR）,生成的csr文件交给CA签名后形成服务端自己的证书.屏幕上将有提示,依照其指示一步一步输入要求的个人信息即可. 3.对客户端也作同样的命令生成key及csr文件: openssl genrsa -des3 -out client.key 1024 openssl req -new -key client.key -out client.csr -config openssl.cnf 4.CSR文件必须有CA的签名才可形成证书.可将此文件发送到verisign等地方由它验证,要交一大笔钱,何不自己做CA呢. openssl req -new -x509 -keyout ca.key -out ca.crt -config openssl.cnf 5.用生成的CA的证书为刚才生成的server.csr,client.csr文件签名: Openssl ca -in server.csr -out server.crt -cert ca.crt -keyfile ca.key -config openssl.cnf Openssl ca -in client.csr -out client.crt -cert ca.crt -keyfile ca.key -config openssl.cnf 现在我们所需的全部文件便生成了. 另： client使用的文件有：ca.crt,client.crt,client.key server使用的文件有：ca.crt,server.crt,server.key .crt文件和.key可以合到一个文件里面，本人把2个文件合成了一个.pem文件（直接拷贝过去就行了）
#
# OpenSSL example configuration file.
# This is mostly being used for generation of certificate requests.
# 翻译：
# Openssl 配置文件示例。该文件主要用于生成证书
# This definition stops the following lines choking if HOME isn't
# defined.
# 如果主目录没有被定义，则将在下面的下划线处停止
HOME = .
RANDFILE = $ENV::HOME/.rnd
# Extra OBJECT IDENTIFIER info:
#oid_file = $ENV::HOME/.oid
oid_section = new_oids
# To use this configuration file with the "-extfile" option of the
# "openssl x509" utility, name here the section containing the
# X.509v3 extensions to use:
# extensions =
# (Alternatively, use a configuration file that has only
# X.509v3 extensions in its main [= default] section.)
[ new_oids ]
# We can add new OIDs in here for use by 'ca', 'req' and 'ts'.
# Add a simple OID like this:
# testoid1=1.2.3.4
# Or use config file substitution like this:
# testoid2=${testoid1}.5.6
# Policies used by the TSA examples.
tsa_policy1 = 1.2.3.4.1
tsa_policy2 = 1.2.3.4.5.6
tsa_policy3 = 1.2.3.4.5.7
####################################################################
[ ca ]
default_ca = CA_default # The default ca section CA节从这里开始定义
####################################################################
[ CA_default ]
dir = ./demoCA # Where everything is kept
certs = $dir/certs # Where the issued certs are kept
crl_dir = $dir/crl # Where the issued crl are kept
database = $dir/index.txt # database index file.
#unique_subject = no # Set to 'no' to allow creation of
# several ctificates with same subject.
new_certs_dir = $dir/newcerts # default place for new certs.
certificate = $dir/cacert.pem # The CA certificate
serial = $dir/serial # The current serial number
crlnumber = $dir/crlnumber # the current crl number
# must be commented out to leave a V1 CRL
crl = $dir/crl.pem # The current CRL
private_key = $dir/private/cakey.pem# The private key
RANDFILE = $dir/private/.rand # private random number file
x509_extensions = usr_cert # The extentions to add to the cert
# Comment out the following two lines for the "traditional"
# (and highly broken) format.
name_opt = ca_default # Subject Name options
cert_opt = ca_default # Certificate field options
# Extension copying option: use with caution.
# copy_extensions = copy
# Extensions to add to a CRL. Note: Netscape communicator chokes on V2 CRLs
# so this is commented out by default to leave a V1 CRL.
# crlnumber must also be commented out to leave a V1 CRL.
# crl_extensions = crl_ext
default_days = 365 # how long to certify for
default_crl_days= 30 # how long before next CRL
default_md = default # use public key default MD
preserve = no # keep passed DN ordering
# A few difference way of specifying how similar the request should look
# For type CA, the listed attributes must be the same, and the optional
# and supplied fields are just that :-)
policy = policy_match
# For the CA policy 定义CA证书的策略
[ policy_match ]
countryName = match
stateOrProvinceName = match
organizationName = match
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
# For the 'anything' policy 定义‘’的策略
# At this point in time, you must list all acceptable 'object'
# types.
[ policy_anything ]
countryName = optional
stateOrProvinceName = optional
localityName = optional
organizationName = optional
organizationalUnitName = optional
commonName = supplied
emailAddress = optional
####################################################################
[ req ]
default_bits = 1024
default_keyfile = privkey.pem
distinguished_name = req_distinguished_name
attributes = req_attributes
x509_extensions = v3_ca # The extentions to add to the self signed cert
# Passwords for private keys if not present they will be prompted for
# input_password = secret
# output_password = secret
# This sets a mask for permitted string types. There are several options.
# default: PrintableString, T61String, BMPString.
# pkix : PrintableString, BMPString (PKIX recommendation before 2004)
# utf8only: only UTF8Strings (PKIX recommendation after 2004).
# nombstr : PrintableString, T61String (no BMPStrings or UTF8Strings).
# MASK:XXXX a literal mask value.
# WARNING: ancient versions of Netscape crash on BMPStrings or UTF8Strings.
string_mask = utf8only
# req_extensions = v3_req # The extensions to add to a certificate request
[ req_distinguished_name ]
countryName = Country Name (2 letter code)
countryName_default = AU
countryName_min = 2
countryName_max = 2
stateOrProvinceName = State or Province Name (full name)
stateOrProvinceName_default = Some-State
localityName = Locality Name (eg, city)
0.organizationName = Organization Name (eg, company)
0.organizationName_default = Internet Widgits Pty Ltd
# we can do this but it is not needed normally :-)
#1.organizationName = Second Organization Name (eg, company)
#1.organizationName_default = World Wide Web Pty Ltd
organizationalUnitName = Organizational Unit Name (eg, section)
#organizationalUnitName_default =
commonName = Common Name (e.g. server FQDN or YOUR name)
commonName_max = 64
emailAddress = Email Address
emailAddress_max = 64
# SET-ex3 = SET extension number 3
[ req_attributes ]
challengePassword = A challenge password
challengePassword_min = 4
challengePassword_max = 20
unstructuredName = An optional company name
[ usr_cert ]
# These extensions are added when 'ca' signs a request.
# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.
basicConstraints=CA:FALSE
# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.
# This is OK for an SSL server.
# nsCertType = server
# For an object signing certificate this would be used.
# nsCertType = objsign
# For normal client use this is typical
# nsCertType = client, email
# and for everything including object signing:
# nsCertType = client, email, objsign
# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment
# This will be displayed in Netscape's comment listbox.
nsComment = "OpenSSL Generated Certificate"
# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer
# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move
# Copy subject details
# issuerAltName=issuer:copy
#nsCaRevocationUrl = http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName
# This is required for TSA certificates.
# extendedKeyUsage = critical,timeStamping
[ v3_req ]
# Extensions to add to a certificate request
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
[ v3_ca ]
# Extensions for a typical CA
# PKIX recommendation.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid:always,issuer
# This is what PKIX recommends but some broken software chokes on critical
# extensions.
#basicConstraints = critical,CA:true
# So we do this instead.
basicConstraints = CA:true
# Key usage: this is typical for a CA certificate. However since it will
# prevent it being used as an test self-signed certificate it is best
# left out by default.
# keyUsage = cRLSign, keyCertSign
# Some might want this also
# nsCertType = sslCA, emailCA
# Include email address in subject alt name: another PKIX recommendation
# subjectAltName=email:copy
# Copy issuer details
# issuerAltName=issuer:copy
# DER hex encoding of an extension: beware experts only!
# obj=DER:02:03
# Where 'obj' is a standard or added object
# You can even override a supported extension:
# basicConstraints= critical, DER:30:03:01:01:FF
[ crl_ext ]
# CRL extensions.
# Only issuerAltName and authorityKeyIdentifier make any sense in a CRL.
# issuerAltName=issuer:copy
authorityKeyIdentifier=keyid:always
[ proxy_cert_ext ]
# These extensions should be added when creating a proxy certificate
# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.
basicConstraints=CA:FALSE
# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.
# This is OK for an SSL server.
# nsCertType = server
# For an object signing certificate this would be used.
# nsCertType = objsign
# For normal client use this is typical
# nsCertType = client, email
# and for everything including object signing:
# nsCertType = client, email, objsign
# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment
# This will be displayed in Netscape's comment listbox.
nsComment = "OpenSSL Generated Certificate"
# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer
# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move
# Copy subject details
# issuerAltName=issuer:copy
#nsCaRevocationUrl = http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName
# This really needs to be in place for it to be a proxy certificate.
proxyCertInfo=critical,language:id-ppl-anyLanguage,pathlen:3,policy:foo
####################################################################
[ tsa ]
default_tsa = tsa_config1 # the default TSA section
[ tsa_config1 ]
# These are used by the TSA reply generation only.
dir = ./demoCA # TSA root directory
serial = $dir/tsaserial # The current serial number (mandatory)
crypto_device = builtin # OpenSSL engine to use for signing
signer_cert = $dir/tsacert.pem # The TSA signing certificate
# (optional)
certs = $dir/cacert.pem # Certificate chain to include in reply
# (optional)
signer_key = $dir/private/tsakey.pem # The TSA private key (optional)
default_policy = tsa_policy1 # Policy if request did not specify it
# (optional)
other_policies = tsa_policy2, tsa_policy3 # acceptable policies (optional)
digests = md5, sha1 # Acceptable message digests (mandatory)
accuracy = secs:1, millisecs:500, microsecs:100 # (optional)
clock_precision_digits = 0 # number of digits after dot. (optional)
ordering = yes # Is ordering defined for timestamps?
# (optional, default: no)
tsa_name = yes # Must the TSA name be included in the reply?
# (optional, default: no)
ess_cert_id_chain = no # Must the ESS cert id chain be included?
# (optional, default: no)
一份原创参考资料
一、RSA方式
1. 建立CA根证书 1) 建立目录RSA 2) 创建以下子目录certs, crl, newcerts 3) 在RSA目录下执行以下操作:
- echo 01 > serial
- touch index.txt
- openssl req -new -x509 -newkey rsa:1024 -keyout CA.key -out CA.pem (生成自签名CA证书)
2. 客户端证书请求
- openssl req -new -newkey rsa:1024 -keyout ddmdd_a.key -out ddmdd_a.req (生成ddmdd_a的密钥和证书请求,注意: 此处所填写的用户信息必须与CA证书信息完全一致)
- openssl rsa -in ddmdd_a.key -pubout -out ddmdd_a.pub (导出公钥)
3. 为客户签发证书
- openssl ca -keyfile CA.key -cert CA.pem -in ddmdd_a.req -out ddmdd_a.pem -notext (使用CA密钥和证书为ddmdd_a签发证书ddmdd_a.pem)
- openssl ca -keyfile CA.key -cert CA.pem -in subca_rsareq.pem -out subca.pem -notext (签发二级CA证书)
4. 转换证书格式
- openssl x509 -inform pem -outform der -in ddmdd_a.pem -out ddmdd_a.der
- openssl pkcs12 -export -in ddmdd_a.pem -inkey ddmdd_a_rsakey.pem -out ddmdd_a.pfx
- openssl pkcs12 -in ddmdd_a.pfx -out ddmdd_a.pem
- openssl rsa -in ddmdd_a.key -out ddmdd_a_open.key (删除私钥密码)
5. 生成证书撤消列表
- echo 01 > crlnumber
- openssl ca -keyfile CA.key -cert CA.pem -revoke ddmdd_a.pem (从CA中撤消证书ddmdd_a.pem)
- openssl ca -gencrl -keyfile CA.key -cert CA.pem -out CA.crl (生成或更新证书撤消列表)
6. 查看证书信息
- openssl x509 -in CA.pem -noout –text
二、DSA方式
1. 建立CA根证书 1) 建立目录DSA 2) 创建以下子目录certs, crl, newcerts 3) 在DSA目录下执行以下操作:
- echo 01 > serial
- touch index.txt
- openssl dsaparam -out CA.para 1024 (生成dsa参数文件)
- openssl req -new -x509 -newkey dsa:CA.para -keyout CA.key -out CA.pem (使用dsa参数生成自签名CA证书)
2. 客户端证书请求
- openssl dsaparam -out ddmdd_b.para 1024 (生成dsa参数文件)
- openssl req -new -newkey dsa:ddmdd_b.para -keyout ddmdd_b.key -out ddmdd_b.req (使用dsa参数生成ddmdd_b的密钥和证书请求,注意: 此处所填写的用户信息必须与CA证书信息完全一致)
- openssl dsa -in ddmdd_b.key -pubout -out ddmdd_b.pub (导出公钥)
3. 为客户签发证书
- openssl ca -keyfile CA.key -cert CA.pem -in ddmdd_b.req -out ddmdd_b.pem -notext (使用CA密钥和证书为ddmdd_b签发证书ddmdd_b.pem)
参考资料
- [ 使用 OpenSSL API 进行安全编程 http://www.ibm.com/developerworks/cn/linux/l-openssl.html ]
- [ 通用线程: OpenSSH 密钥管理，第 1 部分 http://www.ibm.com/developerworks/cn/linux/security/openssh/part1/index.html ]
- [ 通用线程: OpenSSH 密钥管理，第 2 部分 http://www.ibm.com/developerworks/cn/linux/security/openssh/part2/index.html ]
- [ 数据结构物语卷一 http://www.nowamagic.net/librarys/veda/special/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84%E7%89%A9%E8%AF%AD%E5%8D%B7%E4%B8%80/]
- http://www.cnblogs.com/shipfi/archive/2008/10/12/1309168.html
使用OpenSSL实现证书的管理
1 为CA创建一个RSA私钥
＃openssl genrsa -des3 -out -ca.key 1024
系统提示输入PEM pass pharse,也就是密码。生成ca.key文件，可以将文件的属性改为400，并放在安全的地方。
2 利用CA的RSA私钥创建一个自签名的CA证书 创建一个自签名的证书（Selfsigned certificate）运行req命令，该命令生成一个ca.crt。 ＃openssl req -new -x509 -days 3650 -key ca.key -out ca.crt
然后系统提示输入国家代号、省份名称、城市名称、公司名称、部门名称、你的姓名及Email地址，这样一张自签名的CA证书就制作完成。
3 为客户颁发证书 为客户创建证书，先用genrsa命令生成的私钥，用req命令生成证书签署请求CSR。 ＃openssl genrsa -des3 -out client.key 1024
＃openssl req -new -key client.key -out client.csr这里也要输入个人的信息。
然后用sign.sh签署证书。 ＃./sigh.sh client.crt
这样由CA签发的证书就制作完成。
4 撤消证书 要吊消证书可以使用openssl的ca命令，它可以对证书进行吊消、加进CRL及CRL有关的其它一些处理。 要吊消证书可以简单地使用以下命令： ＃openssl ca -revoke 证书文件名 这时数据库被更新证书被标记上吊消的标志，需要生成新的证书吊消列表：
- openssl ca -gencrl -config /etc/openssl.cnf -out crl/sopac-ca.crl
证书吊消列表文件要在WEB站点上可以使用，必须将crldays或crlhours和crlexts加到证书中： openssl ca -gencrl -config /etc/openssl.cnf -crldays 7 -crlexts crl_ext -out crl/sopac-ca.crl
5 证书的更新 当用户发送他旧的证书证书或要在原有私钥的基础上建新的证书，所以必须吊消旧的证书然后再签发新的证书。要找到证书，可以用户的DN（区别名）在 index.txt文件中查到序列号xx,用cert/<xx>.pem做为证书吊消的依据。你必须手动签发证书，因为开始时间和结束时间以 便确定新证书的有效性。 ＃openssl ca -config /etc/openssl.cnf -policy policy_anything -out newcert.pem -infiles newreq.pem -startdate [now] -enddate [previous enddate+365days]
用正确的时间替换 [now]和[previous enddate+365days]。
6 查看证书 ＃openssl x509 -in cert.pem -noout -text
