diff -urip ./artifact/gcp/signer.go /var/cache/pbuilder/build/62527/build/golang-github-mendersoftware-mender-artifact-3.7.0+ds1/obj-x86_64-linux-gnu/src/github.com/mendersoftware/mender-artifact/artifact/gcp/signer.go
--- a/artifact/gcp/signer.go	2022-02-19 16:06:32.768741737 +0100
+++ b/artifact/gcp/signer.go	2022-02-19 16:23:55.065274497 +0100
@@ -29,7 +29,7 @@ import (
 	"github.com/minio/sha256-simd"
 	"github.com/pkg/errors"
 	kmspb "google.golang.org/genproto/googleapis/cloud/kms/v1"
-	"google.golang.org/protobuf/types/known/wrapperspb"
+	//"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 // NewKMSSigner creates a Signer that signs using a key from
@@ -69,7 +69,7 @@ func (k *KMS) Sign(message []byte) ([]by
 
 	h := sha256.Sum256(message)
 
-	digestCRC32C := checksum(h[:])
+	//digestCRC32C := checksum(h[:])
 
 	result, err := k.client.AsymmetricSign(ctx, &kmspb.AsymmetricSignRequest{
 		Name: k.name,
@@ -78,17 +78,19 @@ func (k *KMS) Sign(message []byte) ([]by
 				Sha256: h[:],
 			},
 		},
-		DigestCrc32C: wrapperspb.Int64(digestCRC32C),
+		//DigestCrc32C: wrapperspb.Int64(digestCRC32C),
 	})
 	if err != nil {
 		return nil, errors.Wrap(err, "signer: error signing image with KMS")
 	}
+	/*
 	if !result.VerifiedDigestCrc32C {
 		return nil, errors.New("signer: KMS signing request corrupted")
 	}
 	if checksum(result.Signature) != result.SignatureCrc32C.Value {
 		return nil, errors.New("signer: KMS signing response corrupted")
 	}
+	*/
 
 	switch sm.Method.(type) {
 	case *artifact.RSA:
@@ -137,9 +139,11 @@ func (k *KMS) getKMSKeyAndVerifyMethod(c
 		return nil, errors.Wrap(err, "signer: error getting public key from KMS")
 	}
 
+	/*
 	if checksum([]byte(response.Pem)) != response.PemCrc32C.Value {
 		return nil, errors.New("signer: KMS verification response corrupted")
 	}
+	*/
 
 	return artifact.GetKeyAndVerifyMethod([]byte(response.Pem))
 }
diff -urip ./artifact/gcp/signer_test.go /var/cache/pbuilder/build/62527/build/golang-github-mendersoftware-mender-artifact-3.7.0+ds1/obj-x86_64-linux-gnu/src/github.com/mendersoftware/mender-artifact/artifact/gcp/signer_test.go
--- a/artifact/gcp/signer_test.go	2022-02-19 16:06:32.768741737 +0100
+++ b/artifact/gcp/signer_test.go	2022-02-19 16:41:17.384955340 +0100
@@ -21,7 +21,7 @@ import (
 	"crypto/rand"
 	"crypto/rsa"
 	"fmt"
-	"hash/crc32"
+	//"hash/crc32"
 	"testing"
 	"time"
 
@@ -29,7 +29,7 @@ import (
 	"github.com/mendersoftware/mender-artifact/artifact"
 	"github.com/pkg/errors"
 	kmspb "google.golang.org/genproto/googleapis/cloud/kms/v1"
-	"google.golang.org/protobuf/types/known/wrapperspb"
+	//"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 const (
@@ -98,6 +98,7 @@ func TestKMSSignAndVerify(t *testing.T)
 			keyName:     "invalid key name",
 			wantSignErr: true,
 		},
+		/*
 		"corrupted signature rsa": {
 			signClient:  &fakeKMSClient{corruptSigningCRC: true},
 			keyName:     rsaKeyName,
@@ -128,6 +129,7 @@ func TestKMSSignAndVerify(t *testing.T)
 			keyName:       ecdsaKeyName,
 			wantVerifyErr: true,
 		},
+		*/
 	}
 	for name, test := range tests {
 		t.Run(name, func(t *testing.T) {
@@ -247,9 +249,9 @@ func (f *fakeKMSClient) AsymmetricSign(_
 		return nil, fmt.Errorf("key %q: %v", req.Name, err)
 	}
 
-	crcTable := crc32.MakeTable(crc32.Castagnoli)
-	digestCRC32C := crc32.Checksum(req.Digest.GetSha256(), crcTable)
-	verifiedDigestCRC32C := int64(digestCRC32C) == req.DigestCrc32C.Value
+	//crcTable := crc32.MakeTable(crc32.Castagnoli)
+	//digestCRC32C := crc32.Checksum(req.Digest.GetSha256(), crcTable)
+	//verifiedDigestCRC32C := int64(digestCRC32C) == req.DigestCrc32C.Value
 
 	// We can't reuse sm.Method.sign because those functions will hash the data
 	// an additional time. We just want the signature, since we only have the
@@ -271,15 +273,17 @@ func (f *fakeKMSClient) AsymmetricSign(_
 		return nil, fmt.Errorf("key %q: unsupported signing algorithm", req.Name)
 	}
 
+	/*
 	sigCRC32C := crc32.Checksum(sig, crcTable)
 	if f.corruptSigningCRC {
 		sigCRC32C = 123456
 	}
+	*/
 
 	return &kmspb.AsymmetricSignResponse{
 		Signature:            sig,
-		VerifiedDigestCrc32C: verifiedDigestCRC32C,
-		SignatureCrc32C:      wrapperspb.Int64(int64(sigCRC32C)),
+		//VerifiedDigestCrc32C: verifiedDigestCRC32C,
+		//SignatureCrc32C:      wrapperspb.Int64(int64(sigCRC32C)),
 	}, nil
 }
 
@@ -289,14 +293,14 @@ func (f *fakeKMSClient) GetPublicKey(_ c
 		return nil, err
 	}
 
-	crcTable := crc32.MakeTable(crc32.Castagnoli)
-	pemCRC32C := crc32.Checksum([]byte(key.public), crcTable)
-	if f.corruptPublicKeyCRC {
-		pemCRC32C = 123456
-	}
+	//crcTable := crc32.MakeTable(crc32.Castagnoli)
+	//pemCRC32C := crc32.Checksum([]byte(key.public), crcTable)
+	//if f.corruptPublicKeyCRC {
+	//	pemCRC32C = 123456
+	//}
 	return &kmspb.PublicKey{
 		Pem:       key.public,
-		PemCrc32C: wrapperspb.Int64(int64(pemCRC32C)),
+		//PemCrc32C: wrapperspb.Int64(int64(pemCRC32C)),
 	}, nil
 }