Initial working version

vendor/github.com/xor-gate/sshfp/README.md

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+# SSHFP resolver for Golang
+
+[![License][License-Image]][License-Url]
+[![Gopkg][Gopkg-Image]][Gopkg-Url]
+[![ReportCard][ReportCard-Image]][ReportCard-Url]
+[![Build][Build-Status-Image]][Build-Status-Url]
+[![Coverage][Coverage-Image]][Coverage-Url]
+
+**NOTE: Package is functional but not production ready! It requires at least Golang 1.12 with Go modules**
+
+The sshfp project is a Golang implementation of SSH fingerprints stored in SSHFP DNS records which can be used together
+with [golang.org/x/crypto/ssh.Client](https://godoc.org/golang.org/x/crypto/ssh#Client) using a custom
+[HostKeyCallback](https://godoc.org/github.com/xor-gate/sshfp#Resolver.HostKeyCallback) with modular caching. Learn more about the DNS SSHFP record type on [Wikipedia](https://en.wikipedia.org/wiki/SSHFP_record). 
+
+At least go 1.12 is required
+
+This package is based on the awesome Golang DNS package from [github.com/miekg/dns](https://github.com/miekg/dns).
+
+And implements at least the following RFCs:
+
+* https://www.ietf.org/rfc/rfc1035.txt
+* https://tools.ietf.org/rfc/rfc6594.txt
+* https://www.ietf.org/rfc/rfc4255.txt
+* https://tools.ietf.org/html/rfc7479
+
+# LICENSE
+
+[MIT](LICENSE)
+
+[License-Url]: http://opensource.org/licenses/MIT
+[License-Image]: https://img.shields.io/npm/l/express.svg
+[Stability-Status-Image]: http://badges.github.io/stability-badges/dist/experimental.svg
+[Build-Status-Url]: http://travis-ci.org/xor-gate/sshfp
+[Build-Status-Image]: https://travis-ci.org/xor-gate/sshfp.svg?branch=develop
+[Gopkg-Url]: https://pkg.go.dev/github.com/xor-gate/sshfp?tab=doc
+[Gopkg-Image]: https://img.shields.io/badge/gopkg-documentation-blue
+[ReportCard-Url]: http://goreportcard.com/report/xor-gate/sshfp
+[ReportCard-Image]: https://goreportcard.com/badge/github.com/xor-gate/sshfp
+[Coverage-Url]: https://codecov.io/gh/xor-gate/sshfp 
+[Coverage-image]: https://codecov.io/gh/xor-gate/sshfp/branch/develop/graph/badge.svg