certificates - 🛡️ An online certificate authority and related tools for secure automated certificate management, so you can use TLS everywhere

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An online certificate authority and related tools for secure automated certificate management, so you can use TLS everywhere. For more information and docs see the Step website and the blog post announcing Step Certificate Authority.




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boulder - An ACME-based CA, written in Go.

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This is an implementation of an ACME-based CA. The ACME protocol allows the CA to automatically verify that an applicant for a certificate actually controls an identifier, and allows domain holders to issue and revoke certificates for their domains.Boulder has a Dockerfile to make it easy to install and set up all its dependencies. This is how the maintainers work on Boulder, and is our main recommended way to run it.

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Certigo is a utility to examine and validate certificates to help with debugging SSL/TLS issues.Supports all common file formats: Certigo can read and dump certificates in various formats. It can automatically detect and read from X.509 (DER/PEM), JCEKS, PKCS7 and PKCS12 files. Certificates can be dumped to a human-readable format, a set of PEM blocks, or a JSON object for use in scripting.

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mkcert is a simple tool for making locally-trusted development certificates. It requires no configuration. Using certificates from real certificate authorities (CAs) for development can be dangerous or impossible (for hosts like localhost or, but self-signed certificates cause trust errors. Managing your own CA is the best solution, but usually involves arcane commands, specialized knowledge and manual steps.

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Hyperfox is a security tool for proxying and recording HTTP and HTTPs communications on a LAN. Hyperfox is capable of forging SSL certificates on the fly if you provide it with a root CA certificate and its corresponding key. If the target machine recognizes the root CA as trusted, then HTTPs traffic can be successfully decrypted, intercepted and recorded.

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A simple certificate manager written in Go, to bootstrap your own certificate authority and public key infrastructure. Adapted from etcd-ca.certstrap is a very convenient app if you don't feel like dealing with openssl, its myriad of options or config files.