我正在尝试使用带有SubjectAltName的OpenSSL生成一个自签名证书.虽然我正在为证书生成csr,但我猜我必须使用OpenSSL x509的v3扩展.我在用 :
openssl req -new -x509 -v3 -key private.key -out certificate.pem -days 730
有人可以用确切的语法帮助我吗?
有人可以用确切的语法帮助我吗?
它是一个三步过程,它涉及修改openssl.cnf
文件.您可能只能使用命令行选项来执行此操作,但我不这样做.
找到你的openssl.cnf
文件.它可能位于/usr/lib/ssl/openssl.cnf
:
$ find /usr/lib -name openssl.cnf /usr/lib/openssl.cnf /usr/lib/openssh/openssl.cnf /usr/lib/ssl/openssl.cnf
在我的Debian系统上,/usr/lib/ssl/openssl.cnf
由内置openssl
程序使用.在最近的Debian系统上,它位于/etc/ssl/openssl.cnf
您可以openssl.cnf
通过向XXX
文件添加虚假来查看是否正在使用哪个,并查看是否存在openssl
阻塞.
首先,修改req
参数.添加一个alternate_names
部分以openssl.cnf
包含您要使用的名称.没有现有的alternate_names
部分,因此添加它的位置无关紧要.
[ alternate_names ] DNS.1 = example.com DNS.2 = www.example.com DNS.3 = mail.example.com DNS.4 = ftp.example.com
接下来,将以下内容添加到现有 [ v3_ca ]
部分.搜索确切的字符串[ v3_ca ]
:
subjectAltName = @alternate_names
您可以更改keyUsage
为以下内容[ v3_ca ]
:
keyUsage = digitalSignature, keyEncipherment
digitalSignature
并且keyEncipherment
是服务器证书的标准公平.别担心nonRepudiation
.对于想成为律师的comp sci家伙来说,这是一个无用的想法.它在法律世界中没有任何意义.
最后,IETF(RFC 5280),浏览器和CA运行速度快且松散,因此您提供的密钥用法可能无关紧要.
其次,修改签名参数.在以下CA_default
部分找到这一行:
# Extension copying option: use with caution. # copy_extensions = copy
并将其更改为:
# Extension copying option: use with caution. copy_extensions = copy
这可确保将SAN复制到证书中.复制dns名称的其他方法也被破坏了.
三,生成自签名:
$ openssl genrsa -out private.key 3072 $ openssl req -new -x509 -key private.key -sha256 -out certificate.pem -days 730 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. ...
最后,检查证书:
$ openssl x509 -in certificate.pem -text -noout Certificate: Data: Version: 3 (0x2) Serial Number: 9647297427330319047 (0x85e215e5869042c7) Signature Algorithm: sha256WithRSAEncryption Issuer: C=US, ST=MD, L=Baltimore, O=Test CA, Limited, CN=Test CA/emailAddress=test@example.com Validity Not Before: Feb 1 05:23:05 2014 GMT Not After : Feb 1 05:23:05 2016 GMT Subject: C=US, ST=MD, L=Baltimore, O=Test CA, Limited, CN=Test CA/emailAddress=test@example.com Subject Public Key Info: Public Key Algorithm: rsaEncryption Public-Key: (3072 bit) Modulus: 00:e2:e9:0e:9a:b8:52:d4:91:cf:ed:33:53:8e:35: ... d6:7d:ed:67:44:c3:65:38:5d:6c:94:e5:98:ab:8c: 72:1c:45:92:2c:88:a9:be:0b:f9 Exponent: 65537 (0x10001) X509v3 extensions: X509v3 Subject Key Identifier: 34:66:39:7C:EC:8B:70:80:9E:6F:95:89:DB:B5:B9:B8:D8:F8:AF:A4 X509v3 Authority Key Identifier: keyid:34:66:39:7C:EC:8B:70:80:9E:6F:95:89:DB:B5:B9:B8:D8:F8:AF:A4 X509v3 Basic Constraints: critical CA:FALSE X509v3 Key Usage: Digital Signature, Non Repudiation, Key Encipherment, Certificate Sign X509v3 Subject Alternative Name: DNS:example.com, DNS:www.example.com, DNS:mail.example.com, DNS:ftp.example.com Signature Algorithm: sha256WithRSAEncryption 3b:28:fc:e3:b5:43:5a:d2:a0:b8:01:9b:fa:26:47:8e:5c:b7: ... 71:21:b9:1f:fa:30:19:8b:be:d2:19:5a:84:6c:81:82:95:ef: 8b:0a:bd:65:03:d1