diff --git a/model_signing/signing/in_toto.py b/model_signing/signing/in_toto.py
index 66af0fac..129fbaf7 100644
--- a/model_signing/signing/in_toto.py
+++ b/model_signing/signing/in_toto.py
@@ -46,7 +46,7 @@ class SingleDigestIntotoPayload(IntotoPayload):
     """In-toto payload where the model is serialized to just one digest.
 
     In this case, we encode the model as the only subject of the statement. We
-    don't set the name field, and use the digest as the one resulting from the
+    set the name field to ".", and use the digest as the one resulting from the
     model serialization.
 
     However, since we use custom hashing algorithms, but these are not supported
@@ -59,6 +59,7 @@ class SingleDigestIntotoPayload(IntotoPayload):
       "_type": "https://in-toto.io/Statement/v1",
       "subject": [
         {
+          "name": ".",
           "digest": {
             "sha256": "3aab065c...."
           }
@@ -90,7 +91,7 @@ def __init__(self, *, digest_hex: str, digest_algorithm: str):
             digest_algorithm: the algorithm used to compute the digest.
         """
         digest = {"sha256": digest_hex}
-        descriptor = statement.ResourceDescriptor(digest=digest).pb
+        descriptor = statement.ResourceDescriptor(name=".", digest=digest).pb
 
         self.statement = statement.Statement(
             subjects=[descriptor],
@@ -151,7 +152,7 @@ def _convert_descriptors_to_hashed_statement(
         })
 
     digest = {"sha256": hasher.compute().digest_hex}
-    descriptor = statement.ResourceDescriptor(digest=digest).pb
+    descriptor = statement.ResourceDescriptor(name=".", digest=digest).pb
 
     return statement.Statement(
         subjects=[descriptor],
@@ -176,6 +177,7 @@ class DigestOfDigestsIntotoPayload(IntotoPayload):
       "_type": "https://in-toto.io/Statement/v1",
       "subject": [
         {
+          "name": ".",
           "digest": {
             "sha256": "18b5a4..."
           }
@@ -272,6 +274,7 @@ class DigestOfShardDigestsIntotoPayload(IntotoPayload):
       "_type": "https://in-toto.io/Statement/v1",
       "subject": [
         {
+          "name": ".",
           "digest": {
             "sha256": "18b5a4..."
           }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/deep_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/deep_model_folder
index 0b24629a..1295cc7f 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/deep_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/deep_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "18b5a45fe7983f7194e8ffd96c80f5f0ec53191bf4a32b6aff293f043e816d7a"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_file b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_file
index ac8470eb..c2f9f5d1 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_file
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "5df6e0e2761359d30a8275058e299fcc0381534545f55cf43e41983f5d4c9456"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_folder
index 39e22e6c..9f2c05e5 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/empty_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/model_folder_with_empty_file b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/model_folder_with_empty_file
index 59102d5c..2d292903 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/model_folder_with_empty_file
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/model_folder_with_empty_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "5df6e0e2761359d30a8275058e299fcc0381534545f55cf43e41983f5d4c9456"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_file b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_file
index 4c594350..3e65762f 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_file
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "002d162f867c5eee944e5080d25829b6625be0e3f081f6fbafc7dd655ca2e178"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_folder
index 737465bb..d46d2d61 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/sample_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "143cc682e555951649f18e2761c3d526d2502996f5e32dc187ef7f8a614f8df7"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/symlink_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/symlink_model_folder
index 8e737f97..a6b711ca 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/symlink_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfDigestsIntotoPayload/symlink_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "002d162f867c5eee944e5080d25829b6625be0e3f081f6fbafc7dd655ca2e178"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/deep_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/deep_model_folder
index 42b52a19..3adb5f70 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/deep_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/deep_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "18b5a45fe7983f7194e8ffd96c80f5f0ec53191bf4a32b6aff293f043e816d7a"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_file b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_file
index 898052c3..64ff5def 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_file
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_folder
index 898052c3..64ff5def 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/empty_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/model_folder_with_empty_file b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/model_folder_with_empty_file
index 898052c3..64ff5def 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/model_folder_with_empty_file
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/model_folder_with_empty_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_file b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_file
index 8dee2069..b7907eaf 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_file
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "002d162f867c5eee944e5080d25829b6625be0e3f081f6fbafc7dd655ca2e178"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_folder
index 461cee86..f2d4980c 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/sample_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "143cc682e555951649f18e2761c3d526d2502996f5e32dc187ef7f8a614f8df7"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/symlink_model_folder b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/symlink_model_folder
index dcba2415..f45b3ae4 100644
--- a/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/symlink_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestDigestOfShardDigestsIntotoPayload/symlink_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "002d162f867c5eee944e5080d25829b6625be0e3f081f6fbafc7dd655ca2e178"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/deep_model_folder b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/deep_model_folder
index da101c70..a5d1c277 100644
--- a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/deep_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/deep_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "36eed9389ebbbe15ac15d33c81dabb60ccb7c945ff641d78f59db9aa9dc47ac9"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_file b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_file
index 307b507d..aef4a940 100644
--- a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_file
+++ b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_folder b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_folder
index a67f143a..0b14981f 100644
--- a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/empty_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/model_folder_with_empty_file b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/model_folder_with_empty_file
index b1c88436..b5298124 100644
--- a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/model_folder_with_empty_file
+++ b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/model_folder_with_empty_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "68efd863f20e083173846a5e98ad11387a1979efe20ded426a7930bab8358a9c"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_file b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_file
index ceae1692..8bb6bbba 100644
--- a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_file
+++ b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_file
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "3aab065c7181a173b5dd9e9d32a9f79923440b413be1e1ffcdba26a7365f719b"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_folder b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_folder
index 9091929d..4a5f4774 100644
--- a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/sample_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "310af4fc4c52bf63cd1687c67076ed3e56bc5480a1b151539e6c550506ae0301"
       }
diff --git a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/symlink_model_folder b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/symlink_model_folder
index ba3a1c24..7a016b53 100644
--- a/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/symlink_model_folder
+++ b/model_signing/signing/testdata/in_toto/TestSingleDigestIntotoPayload/symlink_model_folder
@@ -2,6 +2,7 @@
   "_type": "https://in-toto.io/Statement/v1",
   "subject": [
     {
+      "name": ".",
       "digest": {
         "sha256": "8372365be7578241d18db47ec83b735bb450a10a1b4298d9b7b0d8bf543b7271"
       }