init

license

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+Copyright (c) 2016, stephen mcquay
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    * Neither the name of authpixious nor the names of its contributors
+      may be used to endorse or promote products derived from this software
+      without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

main.go

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+package main
+
+import (
+	"bufio"
+	"crypto/sha256"
+	"encoding/base64"
+	"fmt"
+	"os"
+	"strings"
+
+	"golang.org/x/crypto/ssh"
+)
+
+func main() {
+	s := bufio.NewScanner(os.Stdin)
+	for s.Scan() {
+		pk, comment, _, _, err := ssh.ParseAuthorizedKey(s.Bytes())
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "problem parsing pubkey from line %q: %v", s.Text(), err)
+			continue
+		}
+		hsh := sha256.New()
+		hsh.Write(pk.Marshal())
+		chk := hsh.Sum(nil)
+		var name string
+		u := strings.Fields(comment)
+		if len(u) > 0 {
+			name = u[0]
+		}
+		fmt.Printf("%20s : %s (%s)\n", name, base64.StdEncoding.WithPadding(base64.NoPadding).EncodeToString(chk), pk.Type())
+
+	}
+	if err := s.Err(); err != nil {
+		fmt.Fprintf(os.Stderr, "problem during scanning stdin: %v\n", err)
+		os.Exit(1)
+	}
+}

readme.md

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+# fp
+
+print ssh public key fingerprints