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-rw-r--r--board/cr50/tpm2/hash.c2
-rw-r--r--test/tpm_test/hash_test.py2
2 files changed, 2 insertions, 2 deletions
diff --git a/board/cr50/tpm2/hash.c b/board/cr50/tpm2/hash.c
index 157100fd96..de4116052b 100644
--- a/board/cr50/tpm2/hash.c
+++ b/board/cr50/tpm2/hash.c
@@ -352,8 +352,6 @@ static void hash_command_handler(void *cmd_body,
break;
case 3: /* Process a buffer in a single shot. */
- if (!text_len)
- break;
/*
* Error responses are just 1 byte in size, valid responses
* are of various hash sizes.
diff --git a/test/tpm_test/hash_test.py b/test/tpm_test/hash_test.py
index 8bdfb16bdd..821f79e4a1 100644
--- a/test/tpm_test/hash_test.py
+++ b/test/tpm_test/hash_test.py
@@ -28,6 +28,8 @@ EMPTY_RESPONSE = ''.join('%c' % x for x in (0x80, 0x01, 0x00, 0x00, 0x00, 0x0c,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01))
test_inputs = (
# SHA mode cmd mode handle text
+ (MODE_SHA1, 'single', 0, ''),
+ (MODE_SHA256, 'single', 0, ''),
(MODE_SHA1, 'single', 0, 'anything really will work here'),
(MODE_SHA256, 'single', 0, 'some more text, this time for sha256'),
(MODE_SHA256, 'start', 1, 'some more text, this time for sha256'),