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@lsowen
Last active November 23, 2023 23:31
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GPG Signature Verification in go (with golang.org/x/crypto/openpgp)
package main
import (
"fmt"
"golang.org/x/crypto/openpgp"
"os"
)
func main() {
keyRingReader, err := os.Open("signer-pubkey.asc.txt")
if err != nil {
fmt.Println(err)
return
}
signature, err := os.Open("signature.asc.txt")
if err != nil {
fmt.Println(err)
return
}
verification_target, err := os.Open("mysql-5.7.9-win32.zip")
if err != nil {
fmt.Println(err)
return
}
keyring, err := openpgp.ReadArmoredKeyRing(keyRingReader)
if err != nil {
fmt.Println("Read Armored Key Ring: " + err.Error())
return
}
entity, err := openpgp.CheckArmoredDetachedSignature(keyring, verification_target, signature)
if err != nil {
fmt.Println("Check Detached Signature: " + err.Error())
return
}
fmt.Println(entity)
}
curl -L -O "http://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.9-win32.zip"
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iD8DBQBWG783jHGNO1By4fURAlgpAJ9GsAZYXxCwfFM3agG1L1jHIVSRegCbBeSO
Ynpl4kcivqptHI8Ld2h6ntM=
=hGnq
-----END PGP SIGNATURE-----
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.9 (SunOS)
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=443I
-----END PGP PUBLIC KEY BLOCK-----
@fiatjaf
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fiatjaf commented Sep 23, 2017

See my fork for a single-file just-strings version: https://gist.github.com/fiatjaf/41bf9ef6c17b8dc358f87621b57381d8

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