[PATCH 22/45] SecurityPkg/FmpAuthenticationRsa2048Sha256Lib: Add NULL class for FMP.


Yao, Jiewen
 

This is a NULL class for FmpAuthenticationLib. It provides Rsa2048Sha256
based FMP authentication.

Cc: Feng Tian <feng.tian@...>
Cc: Star Zeng <star.zeng@...>
Cc: Michael D Kinney <michael.d.kinney@...>
Cc: Liming Gao <liming.gao@...>
Cc: Chao Zhang <chao.b.zhang@...>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@...>
---
SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.c | 286 ++++++++++++++++++++
SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.inf | 53 ++++
SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.uni | 26 ++
3 files changed, 365 insertions(+)

diff --git a/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.c b/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.c
new file mode 100644
index 0000000..3a9c75f
--- /dev/null
+++ b/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.c
@@ -0,0 +1,286 @@
+/** @file
+ FMP Authentication RSA2048SHA256 handler.
+
+ Caution: This module requires additional review when modified.
+ This module will have external input - capsule image.
+ This external input must be validated carefully to avoid security issue like
+ buffer overflow, integer overflow.
+
+ FmpAuthenticatedHandlerRsa2048Sha256() will receive untrusted input and do basic
+ validation.
+
+ Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Uefi.h>
+
+#include <Guid/SystemResourceTable.h>
+#include <Guid/FirmwareContentsSigned.h>
+#include <Guid/WinCertificate.h>
+#include <Guid/EdkiiSystemFmpCapsule.h>
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/BaseCryptLib.h>
+#include <Library/FmpAuthenticationLib.h>
+
+#include <Protocol/FirmwareManagement.h>
+
+///
+/// Public Exponent of RSA Key.
+///
+STATIC CONST UINT8 mRsaE[] = { 0x01, 0x00, 0x01 };
+
+STATIC UINT8 *mPublicKey;
+STATIC UINTN mPublicKeyBufferSize;
+
+/**
+ The handler is used to do the authentication for FMP capsule based upon
+ EFI_FIRMWARE_IMAGE_AUTHENTICATION.
+
+ Caution: This function may receive untrusted input.
+
+ @param[in] Image Points to the new FMP authentication image,
+ start from EFI_FIRMWARE_IMAGE_AUTHENTICATION.
+ @param[in] ImageSize Size of the authentication image in bytes.
+ @param[out] LastAttemptStatus The last attempt status, which will be recorded
+ in ESRT and FMP EFI_FIRMWARE_IMAGE_DESCRIPTOR.
+
+ @retval RETURN_SUCCESS Authentication pass.
+ @retval RETURN_SECURITY_VIOLATION Authentication fail.
+ The detail reson is recorded in LastAttemptStatus.
+**/
+RETURN_STATUS
+EFIAPI
+FmpAuthenticatedHandlerRsa2048Sha256(
+ IN VOID *Image,
+ IN UINTN ImageSize,
+ OUT UINT32 *LastAttemptStatus
+ )
+{
+ RETURN_STATUS Status;
+ EFI_FIRMWARE_IMAGE_AUTHENTICATION *ImageAuthentication;
+ EFI_CERT_BLOCK_RSA_2048_SHA256 *CertBlockRsa2048Sha256;
+ BOOLEAN CryptoStatus;
+ UINT8 Digest[SHA256_DIGEST_SIZE];
+ UINT8 *PublicKey;
+ UINTN PublicKeyBufferSize;
+ VOID *HashContext;
+ VOID *Rsa;
+ UINTN ImageOffset;
+ UINT64 MonotonicCount;
+ UINT64 Backup;
+
+ DEBUG ((DEBUG_INFO, "FmpAuthenticatedHandlerRsa2048Sha256 - Image: 0x%08x - 0x%08x\n", (UINTN)Image, (UINTN)ImageSize));
+
+ ImageAuthentication = (EFI_FIRMWARE_IMAGE_AUTHENTICATION *)Image;
+ MonotonicCount = ImageAuthentication->MonotonicCount;
+ if (ImageAuthentication->AuthInfo.Hdr.dwLength != sizeof(WIN_CERTIFICATE) + sizeof(EFI_GUID) + sizeof(EFI_CERT_BLOCK_RSA_2048_SHA256)) {
+ DEBUG((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256 - dwLength: 0x%04x, dwLength - 0x%04x\n", (UINTN)ImageAuthentication->AuthInfo.Hdr.dwLength, (UINTN)sizeof(WIN_CERTIFICATE) + sizeof(EFI_GUID) + sizeof(EFI_CERT_BLOCK_RSA_2048_SHA256)));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;
+ return RETURN_SECURITY_VIOLATION;
+ }
+ ImageOffset = ImageAuthentication->AuthInfo.Hdr.dwLength;
+
+ CertBlockRsa2048Sha256 = (EFI_CERT_BLOCK_RSA_2048_SHA256 *)ImageAuthentication->AuthInfo.CertData;
+ if (!CompareGuid(&CertBlockRsa2048Sha256->HashType, &gEfiHashAlgorithmSha256Guid)) {
+ DEBUG((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256 - HashType: %g, expect - %g\n", &CertBlockRsa2048Sha256->HashType, &gEfiHashAlgorithmSha256Guid));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT;
+ return RETURN_SECURITY_VIOLATION;
+ }
+
+ HashContext = NULL;
+ Rsa = NULL;
+
+ //
+ // Allocate hash context buffer required for SHA 256
+ //
+ HashContext = AllocatePool (Sha256GetContextSize ());
+ if (HashContext == NULL) {
+ CryptoStatus = FALSE;
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Can not allocate hash context\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ //
+ // Hash public key from data payload with SHA256.
+ //
+ ZeroMem (Digest, SHA256_DIGEST_SIZE);
+ CryptoStatus = Sha256Init (HashContext);
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Init() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+ CryptoStatus = Sha256Update (HashContext, &CertBlockRsa2048Sha256->PublicKey, sizeof(CertBlockRsa2048Sha256->PublicKey));
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Update() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+ CryptoStatus = Sha256Final (HashContext, Digest);
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Final() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ //
+ // Fail if the PublicKey is not one of the public keys in PcdRsa2048Sha256PublicKeyBuffer
+ //
+ PublicKey = mPublicKey;
+ PublicKeyBufferSize = mPublicKeyBufferSize;
+ CryptoStatus = FALSE;
+ while (PublicKeyBufferSize != 0) {
+ if (CompareMem (Digest, PublicKey, SHA256_DIGEST_SIZE) == 0) {
+ CryptoStatus = TRUE;
+ break;
+ }
+ PublicKey = PublicKey + SHA256_DIGEST_SIZE;
+ PublicKeyBufferSize = PublicKeyBufferSize - SHA256_DIGEST_SIZE;
+ }
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Public key in section is not supported\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_AUTH_ERROR;
+ Status = RETURN_SECURITY_VIOLATION;
+ goto Done;
+ }
+
+ //
+ // Generate & Initialize RSA Context.
+ //
+ Rsa = RsaNew ();
+ if (Rsa == NULL) {
+ CryptoStatus = FALSE;
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: RsaNew() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ goto Done;
+ }
+
+ //
+ // Set RSA Key Components.
+ // NOTE: Only N and E are needed to be set as RSA public key for signature verification.
+ //
+ CryptoStatus = RsaSetKey (Rsa, RsaKeyN, CertBlockRsa2048Sha256->PublicKey, sizeof(CertBlockRsa2048Sha256->PublicKey));
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: RsaSetKey(RsaKeyN) failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+ CryptoStatus = RsaSetKey (Rsa, RsaKeyE, mRsaE, sizeof (mRsaE));
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: RsaSetKey(RsaKeyE) failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ //
+ // Hash data payload with SHA256.
+ //
+ ZeroMem (Digest, SHA256_DIGEST_SIZE);
+ CryptoStatus = Sha256Init (HashContext);
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Init() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+ // It is a signature across the variable data and the Monotonic Count value.
+ CopyMem(&Backup, (UINT8 *)Image + ImageOffset, sizeof(Backup));
+ CopyMem((UINT8 *)Image + ImageOffset, &MonotonicCount, sizeof(MonotonicCount));
+ CryptoStatus = Sha256Update (HashContext, (UINT8 *)Image + ImageOffset, ImageSize - ImageOffset);
+ CopyMem((UINT8 *)Image + ImageOffset, &Backup, sizeof(Backup));
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Update() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+ CryptoStatus = Sha256Final (HashContext, Digest);
+ if (!CryptoStatus) {
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Final() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES;
+ Status = RETURN_OUT_OF_RESOURCES;
+ goto Done;
+ }
+
+ //
+ // Verify the RSA 2048 SHA 256 signature.
+ //
+ CryptoStatus = RsaPkcs1Verify (
+ Rsa,
+ Digest,
+ SHA256_DIGEST_SIZE,
+ CertBlockRsa2048Sha256->Signature,
+ sizeof (CertBlockRsa2048Sha256->Signature)
+ );
+ if (!CryptoStatus) {
+ //
+ // If RSA 2048 SHA 256 signature verification fails, AUTH tested failed bit is set.
+ //
+ DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: RsaPkcs1Verify() failed\n"));
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_ERROR_AUTH_ERROR;
+ Status = RETURN_SECURITY_VIOLATION;
+ goto Done;
+ }
+ DEBUG ((DEBUG_INFO, "FmpAuthenticatedHandlerRsa2048Sha256: PASS verification\n"));
+
+ *LastAttemptStatus = LAST_ATTEMPT_STATUS_SUCCESS;
+ Status = RETURN_SUCCESS;
+
+Done:
+ //
+ // Free allocated resources used to perform RSA 2048 SHA 256 signature verification
+ //
+ if (Rsa != NULL) {
+ RsaFree (Rsa);
+ }
+ if (HashContext != NULL) {
+ FreePool (HashContext);
+ }
+
+ return Status;
+}
+
+/**
+ The constructor function to register FMP authentication handler.
+
+ @retval RETURN_SUCCESS The constructor successfully .
+**/
+RETURN_STATUS
+EFIAPI
+FmpAuthenticationRsa2048Sha256LibConstructor(
+ VOID
+ )
+{
+ RETURN_STATUS Status;
+
+ mPublicKey = (UINT8 *)PcdGetPtr(PcdRsa2048Sha256PublicKeyBuffer);
+ ASSERT(mPublicKey != NULL);
+ mPublicKeyBufferSize = PcdGetSize(PcdRsa2048Sha256PublicKeyBuffer);
+ ASSERT((mPublicKeyBufferSize % SHA256_DIGEST_SIZE) == 0);
+ mPublicKey = AllocateCopyPool(mPublicKeyBufferSize, mPublicKey);
+ ASSERT(mPublicKey != NULL);
+
+ Status = RegisterFmpAuthenticationHandler(&gEfiCertTypeRsa2048Sha256Guid, FmpAuthenticatedHandlerRsa2048Sha256);
+ ASSERT_EFI_ERROR(Status);
+
+ return RETURN_SUCCESS;
+}
diff --git a/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.inf b/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.inf
new file mode 100644
index 0000000..acae202
--- /dev/null
+++ b/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.inf
@@ -0,0 +1,53 @@
+## @file
+# FMP Authentication RSA2048SHA256 handler.
+#
+# Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = FmpAuthenticationRsa2048Sha256Lib
+ MODULE_UNI_FILE = FmpAuthenticationRsa2048Sha256Lib.uni
+ FILE_GUID = 105FF0EA-A0C0-48A8-B8F7-E8B4D62A1019
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = NULL
+ CONSTRUCTOR = FmpAuthenticationRsa2048Sha256LibConstructor
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources]
+ FmpAuthenticationRsa2048Sha256Lib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ SecurityPkg/SecurityPkg.dec
+ CryptoPkg/CryptoPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ BaseMemoryLib
+ DebugLib
+ MemoryAllocationLib
+ BaseCryptLib
+ FmpAuthenticationLib
+
+[Pcd]
+ gEfiSecurityPkgTokenSpaceGuid.PcdRsa2048Sha256PublicKeyBuffer
+
+[Guids]
+ gEfiCertTypeRsa2048Sha256Guid
+ gEfiHashAlgorithmSha256Guid
diff --git a/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.uni b/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.uni
new file mode 100644
index 0000000..902edef
--- /dev/null
+++ b/SecurityPkg/Library/FmpAuthenticationRsa2048Sha256Lib/FmpAuthenticationRsa2048Sha256Lib.uni
@@ -0,0 +1,26 @@
+// /** @file
+// FMP Authentication RSA2048SHA256 handler.
+//
+// This library provide FMP Authentication RSA2048SHA256 handler to verify EFI_FIRMWARE_IMAGE_AUTHENTICATION.
+//
+// Caution: This module requires additional review when modified.
+// This library will have external input - capsule image.
+// This external input must be validated carefully to avoid security issues such as
+// buffer overflow or integer overflow.
+//
+// Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT #language en-US "FMP Authentication RSA2048SHA256 handler."
+
+#string STR_MODULE_DESCRIPTION #language en-US "This library provide FMP Authentication RSA2048SHA256 handler to verify EFI_FIRMWARE_IMAGE_AUTHENTICATION."
+
--
2.7.4.windows.1

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