diff --git a/SecurityPkg/Include/Library/Tpm2CommandLib.h b/SecurityPkg/Include/Library/Tpm2CommandLib.h
index 1a837fd11f..563cfc26e3 100644
--- a/SecurityPkg/Include/Library/Tpm2CommandLib.h
+++ b/SecurityPkg/Include/Library/Tpm2CommandLib.h
@@ -988,6 +988,19 @@ GetHashSizeFromAlgo (
   IN TPMI_ALG_HASH    HashAlgo
   );
 
+/**
+  Get TPML_DIGEST_VALUES data size.
+
+  @param[in]     DigestList    TPML_DIGEST_VALUES data.
+
+  @return TPML_DIGEST_VALUES data size.
+**/
+UINT32
+EFIAPI
+GetDigestListSize(
+  IN TPML_DIGEST_VALUES             *DigestList
+  );
+
 /**
   This function get digest from digest list.
 
diff --git a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c
index 2df18dfe07..96753b79d5 100644
--- a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c
+++ b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c
@@ -165,6 +165,32 @@ CopyAuthSessionResponse (
   return (UINT32)(UINTN)(Buffer - (UINT8 *)AuthSessionIn);
 }
 
+/**
+  Get TPML_DIGEST_VALUES data size.
+
+  @param[in]     DigestList    TPML_DIGEST_VALUES data.
+
+  @return TPML_DIGEST_VALUES data size.
+**/
+UINT32
+EFIAPI
+GetDigestListSize (
+  IN TPML_DIGEST_VALUES             *DigestList
+  )
+{
+  UINTN  Index;
+  UINT16 DigestSize;
+  UINT32 TotalSize;
+
+  TotalSize = sizeof(DigestList->count);
+  for (Index = 0; Index < DigestList->count; Index++) {
+    DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);
+    TotalSize += sizeof(DigestList->digests[Index].hashAlg) + DigestSize;
+  }
+
+  return TotalSize;
+}
+
 /**
   This function get digest from digest list.
 
diff --git a/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c b/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c
index 9080e47032..4d582c03d4 100644
--- a/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c
+++ b/SecurityPkg/Tcg/Tcg2Dxe/Tcg2Dxe.c
@@ -863,31 +863,6 @@ TcgDxeLogEvent (
   return Status;
 }
 
-/**
-  Get TPML_DIGEST_VALUES data size.
-
-  @param[in]     DigestList    TPML_DIGEST_VALUES data.
-
-  @return TPML_DIGEST_VALUES data size.
-**/
-UINT32
-GetDigestListSize (
-  IN TPML_DIGEST_VALUES             *DigestList
-  )
-{
-  UINTN  Index;
-  UINT16 DigestSize;
-  UINT32 TotalSize;
-
-  TotalSize = sizeof(DigestList->count);
-  for (Index = 0; Index < DigestList->count; Index++) {
-    DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);
-    TotalSize += sizeof(DigestList->digests[Index].hashAlg) + DigestSize;
-  }
-
-  return TotalSize;
-}
-
 /**
   Get TPML_DIGEST_VALUES compact binary buffer size.
 
diff --git a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
index adc0350a48..c67cdffe48 100644
--- a/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
+++ b/SecurityPkg/Tcg/Tcg2Pei/Tcg2Pei.c
@@ -189,31 +189,6 @@ EndofPeiSignalNotifyCallBack (
   return EFI_SUCCESS;
 }
 
-/**
-  Get TPML_DIGEST_VALUES data size.
-
-  @param[in]     DigestList    TPML_DIGEST_VALUES data.
-
-  @return TPML_DIGEST_VALUES data size.
-**/
-UINT32
-GetDigestListSize (
-  IN TPML_DIGEST_VALUES             *DigestList
-  )
-{
-  UINTN  Index;
-  UINT16 DigestSize;
-  UINT32 TotalSize;
-
-  TotalSize = sizeof(DigestList->count);
-  for (Index = 0; Index < DigestList->count; Index++) {
-    DigestSize = GetHashSizeFromAlgo (DigestList->digests[Index].hashAlg);
-    TotalSize += sizeof(DigestList->digests[Index].hashAlg) + DigestSize;
-  }
-
-  return TotalSize;
-}
-
 /**
   Return if hash alg is supported in TPM PCR bank.