add AllowEFIAppBeforeCallingEvent flag to vTPM verification (#542)

Author: danko-miladinovic

go.mod

@@ -105,7 +105,7 @@ require (
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/google/go-configfs-tsm v0.3.3-0.20240919001351-b4b5b84fdcbc // indirect
 	github.com/google/go-tpm v0.9.6
-	github.com/google/go-tpm-tools v0.4.4
+	github.com/google/go-tpm-tools v0.4.6
 	github.com/google/logger v1.1.1
 	github.com/google/uuid v1.6.0
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.2 // indirect
@@ -130,5 +130,3 @@ require (
 )
 
 replace github.com/virtee/sev-snp-measure-go => github.com/sammyoina/sev-snp-measure-go v0.0.0-20241202151803-ef189f0ff825
-
-replace github.com/google/go-tpm-tools => github.com/danko-miladinovic/go-tpm-tools v0.0.0-20250228160324-1ebcfd79567c

go.sum

@@ -143,6 +143,8 @@ github.com/google/go-tdx-guest v0.3.2-0.20241009005452-097ee70d0843 h1:+MoPobRN9
 github.com/google/go-tdx-guest v0.3.2-0.20241009005452-097ee70d0843/go.mod h1:g/n8sKITIT9xRivBUbizo34DTsUm2nN2uU3A662h09g=
 github.com/google/go-tpm v0.9.6 h1:Ku42PT4LmjDu1H5C5ISWLlpI1mj+Zq7sPGKoRw2XROA=
 github.com/google/go-tpm v0.9.6/go.mod h1:h9jEsEECg7gtLis0upRBQU+GhYVH6jMjrFxI8u6bVUY=
+github.com/google/go-tpm-tools v0.4.6 h1:hwIwPG7w4z5eQEBq11gYw8YYr9xXLfBQ/0JsKyq5AJM=
+github.com/google/go-tpm-tools v0.4.6/go.mod h1:MsVQbJnRhKDfWwf5zgr3cDGpj13P1uLAFF0wMEP/n5w=
 github.com/google/go-tspi v0.3.0 h1:ADtq8RKfP+jrTyIWIZDIYcKOMecRqNJFOew2IT0Inus=
 github.com/google/go-tspi v0.3.0/go.mod h1:xfMGI3G0PhxCdNVcYr1C4C+EizojDg/TXuX5by8CiHI=
 github.com/google/logger v1.1.1 h1:+6Z2geNxc9G+4D4oDO9njjjn2d0wN5d7uOo0vOIW1NQ=

pkg/attestation/vtpm/vtpm.go

@@ -239,7 +239,9 @@ func VerifyQuote(quote []byte, vtpmNonce []byte, writer io.Writer, policy *attes
 		return err
 	}
 
-	ms, err := server.VerifyAttestation(attestation, server.VerifyOpts{Nonce: vtpmNonce, TrustedAKs: []crypto.PublicKey{cryptoPub}})
+	verifyOpts := server.VerifyOpts{Nonce: vtpmNonce, TrustedAKs: []crypto.PublicKey{cryptoPub}, AllowEFIAppBeforeCallingEvent: true}
+
+	ms, err := server.VerifyAttestation(attestation, verifyOpts)
 	if err != nil {
 		return errors.Wrap(fmt.Errorf("failed to verify attestation"), err)
 	}