77 lines
1.4 KiB
Go
77 lines
1.4 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io"
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"os"
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"strings"
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"golang.org/x/crypto/openpgp"
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)
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func errExit(err error) {
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if err != nil {
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if err == io.EOF {
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fmt.Println("invalid signature file")
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os.Exit(1)
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}
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fmt.Println(err)
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os.Exit(1)
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}
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}
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func main() {
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var sig, file, pub string
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flag.StringVar(&sig, "sig", "", "path to signature file")
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flag.StringVar(&file, "file", "", "path to file")
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flag.StringVar(&pub, "pub", "", "path to pub file")
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flag.Parse()
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pledge("stdio tty unveil rpath")
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unveil(sig, "r")
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unveil(file, "r")
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unveil(pub, "r")
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unveilBlock()
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fPub, err := os.Open(pub)
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errExit(err)
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fFile, err := os.Open(file)
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errExit(err)
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fSig, err := os.Open(sig)
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errExit(err)
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defer fPub.Close()
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defer fSig.Close()
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defer fFile.Close()
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kr, err := openpgp.ReadArmoredKeyRing(fPub)
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if err != nil {
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fmt.Printf("Can't parse public key '%s'\n%s", pub, err)
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os.Exit(1)
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}
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var ent *openpgp.Entity
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switch {
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case strings.HasSuffix(sig, ".sig"), strings.HasSuffix(sig, ".gpg"):
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ent, err = openpgp.CheckDetachedSignature(kr, fFile, fSig)
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case strings.HasSuffix(sig, ".asc"):
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ent, err = openpgp.CheckArmoredDetachedSignature(kr, fFile, fSig)
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default:
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// Try to open as an armored file if we don't know the extension
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ent, err = openpgp.CheckArmoredDetachedSignature(kr, fFile, fSig)
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}
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errExit(err)
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for _, id := range ent.Identities {
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fmt.Printf("%q\n", id.Name)
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}
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fmt.Println("Signature OK.")
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}
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