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Jordi
Asked: 2022-04-28 12:32:21 +0800 CST

SSL：未填充 SAN

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我正在尝试创建我的自签名证书：

  1. CA 私钥创建：openssl genrsa -out ca.key 2048
  2. CA 证书创建（见下文ca.cnf内容）：openssl req -x509 -new -key ca.key -out ca.crt -days 10000 -config ca.cnf
  3. 服务私钥创建：openssl genrsa -out cert.key 2048
  4. 创建 csr（见下文node.cnf）：openssl req -new -key cert.key -out cert.csr -config node.cnf
  5. 创建服务器证书：openssl x509 -req -in cert.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out cert.crt -days 100

之后，我尝试检查我的 SAN 是否已填充：

我明白了：

openssl x509 -noout -ext subjectAltName -in cert.crt
No extensions in certificate

有任何想法吗？

ca.cnf文件是：

# OpenSSL CA configuration file
[ ca ]
default_ca = CA_default

[ CA_default ]
default_days = 365
database = index.txt
serial = serial.txt
default_md = sha256
copy_extensions = copy
unique_subject = no

# Used to create the CA certificate.
[ req ]
prompt=no
distinguished_name = distinguished_name
x509_extensions = extensions

[ distinguished_name ]
organizationName = jeusdi
commonName = cicdgitops

[ extensions ]
keyUsage = critical,digitalSignature,nonRepudiation,keyEncipherment,keyCertSign
basicConstraints = critical,CA:true,pathlen:1

# Common policy for nodes and users.
[ signing_policy ]
organizationName = supplied
commonName = optional

# Used to sign node certificates.
[ signing_node_req ]
keyUsage = critical,digitalSignature,keyEncipherment
extendedKeyUsage = serverAuth,clientAuth

# Used to sign client certificates.
[ signing_client_req ]
keyUsage = critical,digitalSignature,keyEncipherment
extendedKeyUsage = clientAuth

node.cnf：

# OpenSSL node configuration file
[ req ]
prompt=no
distinguished_name = distinguished_name
req_extensions = extensions

[ distinguished_name ]
organizationName = jeusdi

[ extensions ]
subjectAltName = @alt_names

[alt_names]
DNS.1 = registry.localhost
DNS.2 = host.k3d.internal
ssl openssl

1 个回答

  1. Best Answer

    openssl x509的人说：

    -extfile 文件名
    包含要使用的证书扩展名的文件。如果未指定，则不会向证书添加任何扩展。

    您可以使用该-extfile选项以及-extensions将 openssl 指向正确的扩展名。您需要告诉它要使用哪个文件-extfile node.cnf以及哪个部分-extensions extensions，如下所示：

    $ openssl x509 -req -in cert.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out cert.crt -days 100 -extfile node.cnf -extensions extensions

    之后你得到：

    $ openssl x509 -noout -ext subjectAltName -in cert.crt
X509v3 Subject Alternative Name: 
    DNS:registry.localhost, DNS:host.k3d.internal
    • 1

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