Thread (3 messages) 3 messages, 2 authors, 2021-05-10
STALE1848d

[PATCH v1] tpm2: add longer timeout for verify signature command

From: <hidden>
Date: 2021-05-10 14:40:56
Also in: lkml
Subsystem: the rest, tpm device driver · Maintainers: Linus Torvalds, Peter Huewe, Jarkko Sakkinen

From: Amir Mizinski <redacted>

TPM2_CC_VERIFY_SIGNATURE(0x177) Current timeout does not apply to usage with
RSA 3070-bit keys.
Additional time may be required for usage with RSA 3070-bit keys. Therefore, the
timeout of TPM2_CC_VERIFY_SIGNATURE is set to 3 minutes (TPM_LONG_LONG).

Signed-off-by: Amir Mizinski <redacted>
---
 drivers/char/tpm/tpm2-cmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index eff1f12..235a454 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -87,7 +87,7 @@ static u8 tpm2_ordinal_duration_index(u32 ordinal)
 		return TPM_MEDIUM;
 
 	case TPM2_CC_VERIFY_SIGNATURE:        /* 177 */
-		return TPM_LONG;
+		return TPM_LONG_LONG;
 
 	case TPM2_CC_PCR_EXTEND:              /* 182 */
 		return TPM_MEDIUM;
-- 
2.7.4
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