[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M6GX7FQPYD068BCBCSXGASVR":3,"skill-same:01M6GX7FQPYD068BCBCSXGASVR":96},{"skillNo":4,"name":5,"nameZh":6,"description":7,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":6,"repositoryNo":12,"starsCount":13,"licenseSpdxId":14,"licenseFileUrl":6,"sourceHtmlUrl":15,"categories":16,"keywords":17,"publishedAt":33,"linkOnly":34,"markdownContent":35,"markdownBody":36,"frontMatter":37,"refName":41,"commitSha":42,"skillDirectory":43,"forksCount":44,"repositoryHtmlUrl":45,"repositoryHomepageUrl":6,"ownerHtmlUrl":46,"ownerBlogUrl":6,"ownerDescription":6,"updatedAt":47,"install":48,"resources":61},"01M6GX7FQPYD068BCBCSXGASVR","configuring-certificate-authority-with-openssl",null,"A Certificate Authority (CA) is the trust anchor in a PKI hierarchy, responsible for issuing, signing, and revoking digital certificates. This skill covers building a two-tier CA hierarchy (Root CA +","micsapp\u002Fmicstec-skills","micsapp","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F82411001?v=4","01M6GWCFQ6D3PV8EHNY62NN5VW","01M6GWCFVE1PA5HG0DKC7AMFJ3",4,"Apache-2.0","https:\u002F\u002Fgithub.com\u002Fmicsapp\u002Fmicstec-skills\u002Fblob\u002Fmaster\u002F_universal\u002Fcybersecurity-skills\u002Fskills\u002Fconfiguring-certificate-authority-with-openssl\u002FSKILL.md",[],[18,19,20,21,22,23,24,25,26,27,28,29,30,31,32],"openssl","configuring certificate authority with openssl","certificate","with","cybersecurity","cryptography","pki","certificate-authority","x509","certificates","trust","anchor","root","signing","ca","2026-11-10 10:12:30",false,"---\nname: configuring-certificate-authority-with-openssl\ndescription: A Certificate Authority (CA) is the trust anchor in a PKI hierarchy, responsible for issuing, signing, and revoking digital certificates. This skill covers building a two-tier CA hierarchy (Root CA + \ndomain: cybersecurity\nsubdomain: cryptography\ntags: [cryptography, pki, certificate-authority, openssl, x509]\nversion: \"1.0\"\nauthor: mahipal\nlicense: Apache-2.0\n---\n# Configuring Certificate Authority with OpenSSL\n\n## Overview\n\nA Certificate Authority (CA) is the trust anchor in a PKI hierarchy, responsible for issuing, signing, and revoking digital certificates. This skill covers building a two-tier CA hierarchy (Root CA + Intermediate CA) using OpenSSL and the Python cryptography library, including CRL distribution, OCSP responder configuration, and certificate policy management.\n\n\n## When to Use\n\n- When deploying or configuring configuring certificate authority with openssl capabilities in your environment\n- When establishing security controls aligned to compliance requirements\n- When building or improving security architecture for this domain\n- When conducting security assessments that require this implementation\n\n## Prerequisites\n\n- Familiarity with cryptography concepts and tools\n- Access to a test or lab environment for safe execution\n- Python 3.8+ with required dependencies installed\n- Appropriate authorization for any testing activities\n\n## Objectives\n\n- Create a Root CA with self-signed certificate\n- Create an Intermediate CA signed by the Root CA\n- Issue server and client certificates from the Intermediate CA\n- Configure Certificate Revocation Lists (CRLs)\n- Implement certificate policies and constraints\n- Build a complete PKI hierarchy programmatically\n\n## Key Concepts\n\n### CA Hierarchy\n\n```\nRoot CA (offline, air-gapped)\n  |\n  +-- Intermediate CA (online, operational)\n        |\n        +-- Server Certificates\n        +-- Client Certificates\n        +-- Code Signing Certificates\n```\n\n### Certificate Extensions\n\n| Extension | Purpose | Critical |\n|-----------|---------|----------|\n| basicConstraints | CA:TRUE\u002FFALSE, pathLenConstraint | Yes |\n| keyUsage | keyCertSign, cRLSign, digitalSignature | Yes |\n| extendedKeyUsage | serverAuth, clientAuth, codeSigning | No |\n| subjectKeyIdentifier | Hash of public key | No |\n| authorityKeyIdentifier | Issuer's key identifier | No |\n| crlDistributionPoints | URL to CRL | No |\n| authorityInfoAccess | OCSP responder URL | No |\n\n## Security Considerations\n\n- Root CA private key must be stored offline (air-gapped HSM)\n- Use minimum 4096-bit RSA or P-384 ECDSA for CA keys\n- Set path length constraints on intermediate CAs\n- Implement certificate policies (OIDs)\n- Enable CRL and OCSP for revocation checking\n- Audit all certificate issuance operations\n\n## Validation Criteria\n\n- [ ] Root CA self-signed certificate is valid\n- [ ] Intermediate CA certificate chains to Root CA\n- [ ] Issued certificates chain to Intermediate -> Root\n- [ ] Path length constraints are enforced\n- [ ] CRL is generated and accessible\n- [ ] Revoked certificates appear in CRL\n- [ ] Certificate policies are correctly embedded\n","# Configuring Certificate Authority with OpenSSL\n\n## Overview\n\nA Certificate Authority (CA) is the trust anchor in a PKI hierarchy, responsible for issuing, signing, and revoking digital certificates. This skill covers building a two-tier CA hierarchy (Root CA + Intermediate CA) using OpenSSL and the Python cryptography library, including CRL distribution, OCSP responder configuration, and certificate policy management.\n\n\n## When to Use\n\n- When deploying or configuring configuring certificate authority with openssl capabilities in your environment\n- When establishing security controls aligned to compliance requirements\n- When building or improving security architecture for this domain\n- When conducting security assessments that require this implementation\n\n## Prerequisites\n\n- Familiarity with cryptography concepts and tools\n- Access to a test or lab environment for safe execution\n- Python 3.8+ with required dependencies installed\n- Appropriate authorization for any testing activities\n\n## Objectives\n\n- Create a Root CA with self-signed certificate\n- Create an Intermediate CA signed by the Root CA\n- Issue server and client certificates from the Intermediate CA\n- Configure Certificate Revocation Lists (CRLs)\n- Implement certificate policies and constraints\n- Build a complete PKI hierarchy programmatically\n\n## Key Concepts\n\n### CA Hierarchy\n\n```\nRoot CA (offline, air-gapped)\n  |\n  +-- Intermediate CA (online, operational)\n        |\n        +-- Server Certificates\n        +-- Client Certificates\n        +-- Code Signing Certificates\n```\n\n### Certificate Extensions\n\n| Extension | Purpose | Critical |\n|-----------|---------|----------|\n| basicConstraints | CA:TRUE\u002FFALSE, pathLenConstraint | Yes |\n| keyUsage | keyCertSign, cRLSign, digitalSignature | Yes |\n| extendedKeyUsage | serverAuth, clientAuth, codeSigning | No |\n| subjectKeyIdentifier | Hash of public key | No |\n| authorityKeyIdentifier | Issuer's key identifier | No |\n| crlDistributionPoints | URL to CRL | No |\n| authorityInfoAccess | OCSP responder URL | No |\n\n## Security Considerations\n\n- Root CA private key must be stored offline (air-gapped HSM)\n- Use minimum 4096-bit RSA or P-384 ECDSA for CA keys\n- Set path length constraints on intermediate CAs\n- Implement certificate policies (OIDs)\n- Enable CRL and OCSP for revocation checking\n- Audit all certificate issuance operations\n\n## Validation Criteria\n\n- [ ] Root CA self-signed certificate is valid\n- [ ] Intermediate CA certificate chains to Root CA\n- [ ] Issued certificates chain to Intermediate -> Root\n- [ ] Path length constraints are enforced\n- [ ] CRL is generated and accessible\n- [ ] Revoked certificates appear in CRL\n- [ ] Certificate policies are correctly 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