tpm: Restructure tpm20_extend to use buffer and take hash as parameter

Restructure the tpm20_extend function to use a buffer for the
command to send to the TPM. The size of the buffer is calculated
from the size of tpm2_req_extend structure and the appended SHA1
hash.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/std/tcg.h b/src/std/tcg.h
index d60ee09a..16446841 100644
--- a/src/std/tcg.h
+++ b/src/std/tcg.h
@@ -442,7 +442,6 @@ struct tpm2_req_hierarchychangeauth {
 } PACKED;
 
 struct tpm2_digest_value {
-    u32 count; /* 1 entry only */
     u16 hashalg; /* TPM2_ALG_SHA1 */
     u8 sha1[SHA1_BUFSIZE];
 } PACKED;
@@ -452,6 +451,7 @@ struct tpm2_req_extend {
     u32 pcrindex;
     u32 authblocksize;
     struct tpm2_authblock authblock;
+    u32 count;
     struct tpm2_digest_value digest;
 } PACKED;