でクラスターを初期化する AWS CloudHSM

CA の一般的な v3 拡張機能を使用して OpenSSL 設定ファイルを作成します。

$ cat > ca-extensions.conf <<EOF
[req]
distinguished_name = req_distinguished_name
[req_distinguished_name]
C = Country Name (2 letter code)
ST = State or Province Name (full name)
L = Locality Name (eg, city)
O = Organization Name (eg, company)
OU = Organizational Unit Name (eg, section)
CN = Common Name (e.g. server FQDN or YOUR name)
[v3_ca]
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer
basicConstraints = critical,CA:true
keyUsage = critical, keyCertSign, cRLSign, digitalSignature
EOF

OpenSSL を使用して自己署名ルート CA を生成します。

$ openssl req -new -x509 -days 3652 -key customerRootCA.key -out customerRootCA.crt -extensions v3_ca -config ca-extensions.conf
Enter pass phrase for customerRootCA.key:
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]:
State or Province Name (full name) [Some-State]:
Locality Name (eg, city) []:
Organization Name (eg, company) [Internet Widgits Pty Ltd]:
Organizational Unit Name (eg, section) []:
Common Name (e.g. server FQDN or YOUR name) []:
Email Address []:

中間 CA キーを生成します。

$ openssl genrsa -aes256 -out intermediateCA.key 2048
Generating RSA private key, 2048 bit long modulus
........+++
............+++
e is 65537 (0x10001)
Enter pass phrase for intermediateCA.key:
Verifying - Enter pass phrase for intermediateCA.key:

中間 CA 証明書署名リクエスト (CSR) を作成します。

$ openssl req -new -key intermediateCA.key -out intermediateCA.csr
Enter pass phrase for intermediateCA.key:
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]:
State or Province Name (full name) [Some-State]:
Locality Name (eg, city) []:
Organization Name (eg, company) [Internet Widgits Pty Ltd]:
Organizational Unit Name (eg, section) []:
Common Name (e.g. server FQDN or YOUR name) []:
Email Address []:

自己署名ルート CA を使用して、中間 CA 証明書を作成します。

$ openssl x509 -req -in intermediateCA.csr \
		-CA customerRootCA.crt \
		-CAkey customerRootCA.key \
		-CAcreateserial \
		-days 3652 \
		-extensions v3_ca \
		-extfile ca-extensions.conf \
		-out intermediateCA.crt

Certificate request self-signature ok
subject=C= , ST= , L= , O= , OU=

証明書をチェーンファイルに結合します。

$ cat intermediateCA.crt customerRootCA.crt > chainCA.crt

-----BEGIN CERTIFICATE-----
[Intermediate CA]
-----END CERTIFICATE-----
...
...
-----BEGIN CERTIFICATE-----
[Root CA]
-----END CERTIFICATE-----

中間 CA を使用してクラスター CSR に署名します。

$ openssl x509 -req -days 3652 -in <cluster ID>_ClusterCsr.csr \
			-CA intermediateCA.crt \
			-CAkey intermediateCA.key \
			-CAcreateserial \
			-out <cluster ID>_CustomerHsmCertificate.crt
Signature ok
subject=/C=US/ST=CA/O=Cavium/OU=N3FIPS/L=SanJose/CN=HSM:<HSM identifier>:PARTN:<partition number>, for FIPS mode
Getting CA Private Key
Enter pass phrase for intermediateCA.key:

AWS Private Certificate Authority を使用してルート CA を作成してアクティブ化します。

$ # 1. Create Root CA
aws acm-pca create-certificate-authority \
    --certificate-authority-configuration \
        "KeyAlgorithm=RSA_4096,
        SigningAlgorithm=SHA256WITHRSA,
        Subject={Country=US,Organization=MyOrg,OrganizationalUnit=IT,CommonName=RootCA}" \
    --certificate-authority-type ROOT

# Store the Root CA Authority ARN from the previous output
ROOT_CA_AUTHORITY_ARN="arn:aws:acm-pca:<region>:<account-id>:certificate-authority/<ca-authority-id>"

# 2. Generate Root CA CSR
aws acm-pca get-certificate-authority-csr \
    --certificate-authority-arn $ROOT_CA_AUTHORITY_ARN \
    --output text > customerRootCA.csr

# 3. Self-sign Root CA Certificate
aws acm-pca issue-certificate \
    --certificate-authority-arn $ROOT_CA_AUTHORITY_ARN \
    --csr fileb://customerRootCA.csr \
    --signing-algorithm SHA256WITHRSA \
	--template-arn arn:aws:acm-pca:::template/RootCACertificate/V1 \
    --validity Value=3652,Type=DAYS

# Store the Root CA certificate ARN from the previous output
ROOT_CA_ARN="arn:aws:acm-pca:<region>:<account-id>:certificate-authority/<ca-authority-id>/certificate/<cert-id>"

# 4. Retrieve the Root CA certificate
aws acm-pca get-certificate \
    --certificate-authority-arn $ROOT_CA_AUTHORITY_ARN \
    --certificate-arn $ROOT_CA_ARN \
    --output text > customerRootCA.crt

# 5. Import the Root CA Certificate
aws acm-pca import-certificate-authority-certificate \
    --certificate-authority-arn $ROOT_CA_AUTHORITY_ARN \
    --certificate fileb://customerRootCA.crt

下位 CA (中間 CA とも呼ばれます) を作成してアクティブ化します。

$ # 6. Create Subordinate CA
aws acm-pca create-certificate-authority \
    --certificate-authority-configuration \
        "KeyAlgorithm=RSA_4096,
        SigningAlgorithm=SHA256WITHRSA,
        Subject={Country=US,Organization=MyOrg,OrganizationalUnit=IT,CommonName=SubordinateCA}" \
    --certificate-authority-type SUBORDINATE

# Store the Subordinate CA Authority ARN from the previous output
SUB_CA_AUTHORITY_ARN="arn:aws:acm-pca:<region>:<account-id>:certificate-authority/<sub-ca-authority-id>"

# 7. Generate Subordinate CA CSR
aws acm-pca get-certificate-authority-csr \
    --certificate-authority-arn $SUB_CA_AUTHORITY_ARN \
    --output text > intermediateCA.csr

# 8. Issue Subordinate CA Certificate using Root CA
aws acm-pca issue-certificate \
    --certificate-authority-arn $ROOT_CA_AUTHORITY_ARN \
    --csr fileb://intermediateCA.csr \
    --signing-algorithm SHA256WITHRSA \
    --template-arn arn:aws:acm-pca:::template/SubordinateCACertificate_PathLen0/V1 \
    --validity Value=3651,Type=DAYS

# Store the Subordinate CA certificate ARN from the previous output
SUB_CA_ARN="arn:aws:acm-pca:<region>:<account-id>:certificate-authority/<sub-ca-authority-id>"

# 9. Retrieve Subordinate CA Certificate
aws acm-pca get-certificate \
    --certificate-authority-arn $ROOT_CA_AUTHORITY_ARN \
    --certificate-arn $SUB_CA_ARN \
    --query 'Certificate' \
    --output text > intermediateCA.crt

# 10. Import the Subordinate CA Certificate
aws acm-pca import-certificate-authority-certificate \
    --certificate-authority-arn $SUB_CA_AUTHORITY_ARN \
    --certificate fileb://intermediateCA.crt \
    --certificate-chain fileb://customerRootCA.crt

証明書をチェーンファイルに結合します。

$ cat intermediateCA.crt customerRootCA.crt > chainCA.crt

-----BEGIN CERTIFICATE-----
[Intermediate CA]
-----END CERTIFICATE-----
...
...
-----BEGIN CERTIFICATE-----
[Root CA]
-----END CERTIFICATE-----

AWS PCA を使用してクラスター CSR に署名します。

$ aws acm-pca issue-certificate \
    --certificate-authority-arn $SUB_CA_AUTHORITY_ARN \
    --csr fileb://<cluster ID>_ClusterCsr.csr \
    --signing-algorithm SHA256WITHRSA \
    --template-arn arn:aws:acm-pca:::template/EndEntityCertificate/V1 \
    --validity Value=3650,Type=DAYS

# Store your cluster's cert ARN from the previous output
CLUSTER_CERT_ARN="arn:aws:acm-pca:<region>:<account-id>:certificate-authority/<cluster-cert-arn>"

署名付きクラスター証明書をダウンロードします。

$ aws acm-pca get-certificate \
    --certificate-authority-arn $SUB_CA_AUTHORITY_ARN \
    --certificate-arn $CLUSTER_CERT_ARN \
    --output text --query Certificate > <cluster ID>_CustomerHsmCertificate.crt