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This is an opinionated single-file OpenVPN TLS certificate library. It has no dependencies on any other external tool such as openssl.

• Uses a single boltdb instance to store the certificates and keys.
• All data strored in the database is encrypted with keys derived from a user supplied CA passphrase.
• Support for issuing & revoking:
  • Server Certs (optionally signed by intermediate CAs)
  • Client Certs (optionally signed by intermediate CAs)
  • Intermediate CA certs (optionally signed by other intermediate CAs)
• Flexible CRL generation
• The certificates and keys are opinionated:
  • All CA cert private keys are Secp521r1
  • Client & Servers cert private keys are Secp256k1
  • "SSL-Server" attribute set on server certificates (nsCertType)
  • "SSL-Client" attribute set on client certificates (nsCertType)
  • ECDSA with SHA512 is used as the signature algorithm of encryption to thwart DoS attacks.

Two tools use this:

• ovpn-tool - an opnionated PKI and OpenVPN Configuration manager
• certik - an example CLI program that uses this library

You will need a fairly recent golang toolchain (>1.10). go-pki is modules ready. You just import the code in your project as:

    import (
        "github.com/opencoff/go-pki"
    )