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package main
import (
"context"
"flag"
"fmt"
"os"
"strings"
"go.step.sm/crypto/kms/apiv1"
"go.step.sm/crypto/kms/cloudkms"
)
func usage() {
fmt.Fprintf(flag.CommandLine.Output(), "%s [options] <resource>\n", os.Args[0])
flag.PrintDefaults()
}
func main() {
var certs, attributes, content, help bool
flag.BoolVar(&certs, "certs", false, "Print the attestation certificates")
flag.BoolVar(&attributes, "attributes", false, "Print the attestation attributes")
flag.BoolVar(&content, "content", false, "Print the attestation file")
flag.BoolVar(&help, "help", false, "Print the program usage")
flag.Parse()
switch {
case help:
usage()
os.Exit(0)
case len(flag.Args()) != 1:
usage()
os.Exit(1)
case certs && attributes, certs && content, attributes && content:
fmt.Fprintln(flag.CommandLine.Output(), "flag --certs, --attributes, and --content are mutually exclusive")
os.Exit(1)
}
km, err := cloudkms.New(context.Background(), apiv1.Options{})
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(2)
}
att, err := km.VerifyAttestation(context.Background(), flag.Arg(0))
_ = km.Close()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(3)
}
if certs {
fmt.Println(strings.TrimSpace(att.CertChain.ManufacturerRoot))
fmt.Println(strings.TrimSpace(att.CertChain.ManufacturerCardCert))
fmt.Println(strings.TrimSpace(att.CertChain.ManufacturerPartitionCert))
fmt.Println(strings.TrimSpace(att.CertChain.OwnerRoot))
fmt.Println(strings.TrimSpace(att.CertChain.OwnerCardCert))
fmt.Println(strings.TrimSpace(att.CertChain.OwnerPartitionCert))
return
}
if attributes {
if len(att.PublicKeyAttributes) > 0 {
fmt.Println("Public Key Attestation")
for _, v := range att.PublicKeyAttributes {
fmt.Println(v.String())
}
}
if len(att.PrivateKeyAttributes) > 0 {
fmt.Println("Private Key Attestation")
for _, v := range att.PrivateKeyAttributes {
fmt.Println(v.String())
}
}
if len(att.SymmetricKeyAttributes) > 0 {
fmt.Println("Symmetric Key Attestation")
for _, v := range att.SymmetricKeyAttributes {
fmt.Println(v.String())
}
}
return
}
if content {
os.Stdout.Write(att.Content)
return
}
fmt.Println("Attested:", att.Valid)
fmt.Println("Generated:", att.Generated)
fmt.Println("Extractable:", att.Extractable)
fmt.Println("KeyType:", att.KeyType)
fmt.Println("Algorithm:", att.Algorithm)
}
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