2019-06-20 19:50
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AWS Cert Mgr-如何创建客户端和设备证书?

From AWS tech talk, I have learnt that,

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I am able to create private server certificate using below option:

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The server certificates serve the rationale of encrypting and decrypting the content.


client certificate as the name implies is clearly used to identify a client to a respective user

A device certificate creates an identity for each “thing” in an IoT ecosystem, making sure each device authenticates as it connects, and protects communication between devices.

We have created root CA and subordinate CA using AWS Cert mgr through console.

How to create device & client certificate(private) using ACM GoLang sdk?

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  • douliu3831 2019-06-20 20:13

    [UPDATE after question asked for ACM]

    Use the aws acm-pca issue-certificate command to request a certificate:

    # Create the CSR and Private Key
    openssl req -new -newkey rsa:2048 -days 365 -keyout ${CLIENT_ID}.key -out ${CLIENT_ID}.csr
    # Replace --certificate-authority-arn with your ARN returned when you create the certificate authority.
    aws acm-pca issue-certificate \
    --csr file://${CLIENT_ID}.csr \
    --signing-algorithm "SHA256WITHRSA" \
    --validity Value=375,Type="DAYS" \
    --idempotency-token 12983 \
    --certificate-authority-arn arn:aws:acm-pca:region:account:\

    This command outputs the ARN, save this value for the next command ($MY-CERT-ARN)

    aws acm-pca get-certificate \
    --certificate-authority-arn arn:aws:acm-pca:region:account:\
    certificate-authority/12345678-1234-1234-1234-123456789012 \
    --certificate-arn $MY-CERT-ARN \
     --output text > ${CLIENT_ID}-cert.pem


    Example code to generate a client certificate. Change CLIENT_ID and CLIENT_SERIAL for each certificate that you generate. ca.pem and ca.key are your CA certificate and private key.

    openssl genrsa -aes256 -passout pass:xxxx -out ${CLIENT_ID}.pass.key 4096
    openssl rsa -passin pass:xxxx -in ${CLIENT_ID}.pass.key -out ${CLIENT_ID}.key
    rm ${CLIENT_ID}.pass.key
    # generate the CSR
    openssl req -new -key ${CLIENT_ID}.key -out ${CLIENT_ID}.csr
    # issue this certificate, signed by the CA (ca.pem ca.key)
    openssl x509 -req -days 375 -in ${CLIENT_ID}.csr -CA ca.pem -CAkey ca.key -set_serial ${CLIENT_SERIAL} -out ${CLIENT_ID}.pem
    # Give the client the file: ${CLIENT_ID}.full.pem
    cat ${CLIENT_ID}.key ${CLIENT_ID}.pem ca.pem > ${CLIENT_ID}.full.pem
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