[PATCH v3 5/6] tpm: Increase TPM_BUFSIZE to 8kB for chunking support
Arun Menon <[email protected]>
| Newsgroups | org.kernel.vger.linux-integrity,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
From: Arun Menon <[email protected]> The size of the command is checked against TPM_BUFSIZE early on before even sending it to the backend. We therefore need to increase the TPM_BUFSIZE to allow support for larger commands. For now, 8KB seems sufficient for ML-KEM and ML-DSA algorithms and it is also order-1 safe. Signed-off-by: Arun Menon <[email protected]> --- include/linux/tpm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/tpm.h b/include/linux/tpm.h index 01216156a1ec..af2bfac45fe0 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -26,7 +26,7 @@ #include <crypto/aes.h> #define TPM_DIGEST_SIZE 20 /* Max TPM v1.2 PCR size */ -#define TPM_BUFSIZE 4096 +#define TPM_BUFSIZE 8192 /* * SHA-512 is, as of today, the largest digest in the TCG algorithm repository. -- 2.54.0