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Add restriction that HashFinal() must be after at least one HashUpdate(). 

Just follow UEFI spec.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <Jiewen.Yao@intel.com>
Reviewed-by: "Zhang, Chao B" <chao.b.zhang@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18229 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Yao, Jiewen 2015-08-18 02:11:10 +00:00 committed by jyao1
parent 70bd69912a
commit a3a0974822
2 changed files with 7 additions and 1 deletions
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1
SecurityPkg/Hash2DxeCrypto/Driver.h
View File

@ -57,6 +57,7 @@ typedef struct {
EFI_HASH2_PROTOCOL Hash2Protocol;
VOID *HashContext;
VOID *HashInfoContext;
BOOLEAN Updated;
} HASH2_INSTANCE_DATA;
#define HASH2_INSTANCE_DATA_FROM_THIS(a) \

7
SecurityPkg/Hash2DxeCrypto/Hash2DxeCrypto.c
View File

@ -500,6 +500,7 @@ BaseCrypto2HashInit (
//
Instance->HashContext = HashCtx;
Instance->HashInfoContext = HashInfo;
Instance->Updated = FALSE;
return EFI_SUCCESS;
}
@ -551,6 +552,8 @@ BaseCrypto2HashUpdate (
return EFI_OUT_OF_RESOURCES;
}
Instance->Updated = TRUE;
return EFI_SUCCESS;
}
@ -590,7 +593,8 @@ BaseCrypto2HashFinal (
// Consistency Check
//
Instance = HASH2_INSTANCE_DATA_FROM_THIS(This);
if ((Instance->HashContext == NULL) || (Instance->HashInfoContext == NULL)) {
if ((Instance->HashContext == NULL) || (Instance->HashInfoContext == NULL) ||
(!Instance->Updated)) {
return EFI_NOT_READY;
}
HashInfo = Instance->HashInfoContext;
@ -604,6 +608,7 @@ BaseCrypto2HashFinal (
FreePool (HashCtx);
Instance->HashInfoContext = NULL;
Instance->HashContext = NULL;
Instance->Updated = FALSE;
if (!Ret) {
return EFI_OUT_OF_RESOURCES;