diff --git a/test/py/tests/test_vboot.py b/test/py/tests/test_vboot.py
index 92144d4..ee6a096 100644
--- a/test/py/tests/test_vboot.py
+++ b/test/py/tests/test_vboot.py
@@ -126,7 +126,7 @@
             handle.write(struct.pack(">I", size))
         return struct.unpack(">I", total_size)[0]
 
-    def test_with_algo(sha_algo):
+    def test_with_algo(sha_algo, padding):
         """Test verified boot with the given hash algorithm.
 
         This is the main part of the test code. The same procedure is followed
@@ -144,7 +144,7 @@
 
         # Build the FIT, but don't sign anything yet
         cons.log.action('%s: Test FIT with signed images' % sha_algo)
-        make_fit('sign-images-%s.its' % sha_algo)
+        make_fit('sign-images-%s%s.its' % (sha_algo , padding))
         run_bootm(sha_algo, 'unsigned images', 'dev-', True)
 
         # Sign images with our dev keys
@@ -155,7 +155,7 @@
         dtc('sandbox-u-boot.dts')
 
         cons.log.action('%s: Test FIT with signed configuration' % sha_algo)
-        make_fit('sign-configs-%s.its' % sha_algo)
+        make_fit('sign-configs-%s%s.its' % (sha_algo , padding))
         run_bootm(sha_algo, 'unsigned config', '%s+ OK' % sha_algo, True)
 
         # Sign images with our dev keys
@@ -226,8 +226,10 @@
         # afterwards.
         old_dtb = cons.config.dtb
         cons.config.dtb = dtb
-        test_with_algo('sha1')
-        test_with_algo('sha256')
+        test_with_algo('sha1','')
+        test_with_algo('sha1','-pss')
+        test_with_algo('sha256','')
+        test_with_algo('sha256','-pss')
     finally:
         # Go back to the original U-Boot with the correct dtb.
         cons.config.dtb = old_dtb
diff --git a/test/py/tests/vboot/sign-configs-sha1-pss.its b/test/py/tests/vboot/sign-configs-sha1-pss.its
new file mode 100644
index 0000000..3c3ab20
--- /dev/null
+++ b/test/py/tests/vboot/sign-configs-sha1-pss.its
@@ -0,0 +1,46 @@
+/dts-v1/;
+
+/ {
+	description = "Chrome OS kernel image with one or more FDT blobs";
+	#address-cells = <1>;
+
+	images {
+		kernel@1 {
+			data = /incbin/("test-kernel.bin");
+			type = "kernel_noload";
+			arch = "sandbox";
+			os = "linux";
+			compression = "none";
+			load = <0x4>;
+			entry = <0x8>;
+			kernel-version = <1>;
+			hash@1 {
+				algo = "sha1";
+			};
+		};
+		fdt@1 {
+			description = "snow";
+			data = /incbin/("sandbox-kernel.dtb");
+			type = "flat_dt";
+			arch = "sandbox";
+			compression = "none";
+			fdt-version = <1>;
+			hash@1 {
+				algo = "sha1";
+			};
+		};
+	};
+	configurations {
+		default = "conf@1";
+		conf@1 {
+			kernel = "kernel@1";
+			fdt = "fdt@1";
+			signature@1 {
+				algo = "sha1,rsa2048";
+				padding = "pss";
+				key-name-hint = "dev";
+				sign-images = "fdt", "kernel";
+			};
+		};
+	};
+};
diff --git a/test/py/tests/vboot/sign-configs-sha256-pss.its b/test/py/tests/vboot/sign-configs-sha256-pss.its
new file mode 100644
index 0000000..8e33510
--- /dev/null
+++ b/test/py/tests/vboot/sign-configs-sha256-pss.its
@@ -0,0 +1,46 @@
+/dts-v1/;
+
+/ {
+	description = "Chrome OS kernel image with one or more FDT blobs";
+	#address-cells = <1>;
+
+	images {
+		kernel@1 {
+			data = /incbin/("test-kernel.bin");
+			type = "kernel_noload";
+			arch = "sandbox";
+			os = "linux";
+			compression = "none";
+			load = <0x4>;
+			entry = <0x8>;
+			kernel-version = <1>;
+			hash@1 {
+				algo = "sha256";
+			};
+		};
+		fdt@1 {
+			description = "snow";
+			data = /incbin/("sandbox-kernel.dtb");
+			type = "flat_dt";
+			arch = "sandbox";
+			compression = "none";
+			fdt-version = <1>;
+			hash@1 {
+				algo = "sha256";
+			};
+		};
+	};
+	configurations {
+		default = "conf@1";
+		conf@1 {
+			kernel = "kernel@1";
+			fdt = "fdt@1";
+			signature@1 {
+				algo = "sha256,rsa2048";
+				padding = "pss";
+				key-name-hint = "dev";
+				sign-images = "fdt", "kernel";
+			};
+		};
+	};
+};
diff --git a/test/py/tests/vboot/sign-images-sha1-pss.its b/test/py/tests/vboot/sign-images-sha1-pss.its
new file mode 100644
index 0000000..d19c4d7
--- /dev/null
+++ b/test/py/tests/vboot/sign-images-sha1-pss.its
@@ -0,0 +1,44 @@
+/dts-v1/;
+
+/ {
+	description = "Chrome OS kernel image with one or more FDT blobs";
+	#address-cells = <1>;
+
+	images {
+		kernel@1 {
+			data = /incbin/("test-kernel.bin");
+			type = "kernel_noload";
+			arch = "sandbox";
+			os = "linux";
+			compression = "none";
+			load = <0x4>;
+			entry = <0x8>;
+			kernel-version = <1>;
+			signature@1 {
+				algo = "sha1,rsa2048";
+				padding = "pss";
+				key-name-hint = "dev";
+			};
+		};
+		fdt@1 {
+			description = "snow";
+			data = /incbin/("sandbox-kernel.dtb");
+			type = "flat_dt";
+			arch = "sandbox";
+			compression = "none";
+			fdt-version = <1>;
+			signature@1 {
+				algo = "sha1,rsa2048";
+				padding = "pss";
+				key-name-hint = "dev";
+			};
+		};
+	};
+	configurations {
+		default = "conf@1";
+		conf@1 {
+			kernel = "kernel@1";
+			fdt = "fdt@1";
+		};
+	};
+};
diff --git a/test/py/tests/vboot/sign-images-sha256-pss.its b/test/py/tests/vboot/sign-images-sha256-pss.its
new file mode 100644
index 0000000..43612f8
--- /dev/null
+++ b/test/py/tests/vboot/sign-images-sha256-pss.its
@@ -0,0 +1,44 @@
+/dts-v1/;
+
+/ {
+	description = "Chrome OS kernel image with one or more FDT blobs";
+	#address-cells = <1>;
+
+	images {
+		kernel@1 {
+			data = /incbin/("test-kernel.bin");
+			type = "kernel_noload";
+			arch = "sandbox";
+			os = "linux";
+			compression = "none";
+			load = <0x4>;
+			entry = <0x8>;
+			kernel-version = <1>;
+			signature@1 {
+				algo = "sha256,rsa2048";
+				padding = "pss";
+				key-name-hint = "dev";
+			};
+		};
+		fdt@1 {
+			description = "snow";
+			data = /incbin/("sandbox-kernel.dtb");
+			type = "flat_dt";
+			arch = "sandbox";
+			compression = "none";
+			fdt-version = <1>;
+			signature@1 {
+				algo = "sha256,rsa2048";
+				padding = "pss";
+				key-name-hint = "dev";
+			};
+		};
+	};
+	configurations {
+		default = "conf@1";
+		conf@1 {
+			kernel = "kernel@1";
+			fdt = "fdt@1";
+		};
+	};
+};