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SecurityPkg TPM2: Add GetHashMaskFromAlgo() into Tpm2CommandLib 

Add GetHashMaskFromAlgo() into Tpm2CommandLib for coming consumer.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by : Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Star Zeng 2016-11-18 13:13:21 +08:00
parent 697c30b157
commit b8ae1f4de7
2 changed files with 42 additions and 5 deletions
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13
SecurityPkg/Include/Library/Tpm2CommandLib.h
View File

@ -1006,6 +1006,19 @@ GetHashSizeFromAlgo (
IN TPMI_ALG_HASH HashAlgo
);
/**
Get hash mask from algorithm.
@param[in] HashAlgo Hash algorithm
@return Hash mask
**/
UINT32
EFIAPI
GetHashMaskFromAlgo (
IN TPMI_ALG_HASH HashAlgo
);
/**
Return if hash alg is supported in HashAlgorithmMask.

34
SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c
View File

@ -22,14 +22,15 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
typedef struct {
TPMI_ALG_HASH HashAlgo;
UINT16 HashSize;
UINT32 HashMask;
} INTERNAL_HASH_INFO;
STATIC INTERNAL_HASH_INFO mHashInfo[] = {
{TPM_ALG_SHA1, SHA1_DIGEST_SIZE},
{TPM_ALG_SHA256, SHA256_DIGEST_SIZE},
{TPM_ALG_SM3_256, SM3_256_DIGEST_SIZE},
{TPM_ALG_SHA384, SHA384_DIGEST_SIZE},
{TPM_ALG_SHA512, SHA512_DIGEST_SIZE},
{TPM_ALG_SHA1, SHA1_DIGEST_SIZE, HASH_ALG_SHA1},
{TPM_ALG_SHA256, SHA256_DIGEST_SIZE, HASH_ALG_SHA256},
{TPM_ALG_SM3_256, SM3_256_DIGEST_SIZE, HASH_ALG_SM3_256},
{TPM_ALG_SHA384, SHA384_DIGEST_SIZE, HASH_ALG_SHA384},
{TPM_ALG_SHA512, SHA512_DIGEST_SIZE, HASH_ALG_SHA512},
};
/**
@ -55,6 +56,29 @@ GetHashSizeFromAlgo (
return 0;
}
/**
Get hash mask from algorithm.
@param[in] HashAlgo Hash algorithm
@return Hash mask
**/
UINT32
EFIAPI
GetHashMaskFromAlgo (
IN TPMI_ALG_HASH HashAlgo
)
{
UINTN Index;
for (Index = 0; Index < sizeof(mHashInfo)/sizeof(mHashInfo[0]); Index++) {
if (mHashInfo[Index].HashAlgo == HashAlgo) {
return mHashInfo[Index].HashMask;
}
}
return 0;
}
/**
Copy AuthSessionIn to TPM2 command buffer.