It provides Rsa2048Sha256 based FMP authentication. Cc: Feng Tian <feng.t...@intel.com> Cc: Star Zeng <star.z...@intel.com> Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Liming Gao <liming....@intel.com> Cc: Chao Zhang <chao.b.zh...@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <jiewen....@intel.com> Reviewed-by: Chao Zhang <chao.b.zh...@intel.com> --- SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.c | 355 ++++++++++++++++++++ SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.inf | 53 +++ SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.uni | 26 ++ 3 files changed, 434 insertions(+)
diff --git a/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.c b/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.c new file mode 100644 index 0000000..d113d58 --- /dev/null +++ b/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.c @@ -0,0 +1,355 @@ +/** @file + FMP Authentication RSA2048SHA256 handler. + Provide generic FMP authentication functions for DXE/PEI post memory phase. + + 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(), AuthenticateFmpImage() 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 <Library/BaseLib.h> +#include <Library/BaseMemoryLib.h> +#include <Library/DebugLib.h> +#include <Library/MemoryAllocationLib.h> +#include <Library/BaseCryptLib.h> +#include <Library/FmpAuthenticationLib.h> +#include <Library/PcdLib.h> +#include <Protocol/FirmwareManagement.h> +#include <Guid/SystemResourceTable.h> + +/// +/// Public Exponent of RSA Key. +/// +STATIC CONST UINT8 mRsaE[] = { 0x01, 0x00, 0x01 }; + +/** + The handler is used to do the authentication for FMP capsule based upon + EFI_FIRMWARE_IMAGE_AUTHENTICATION. + + Caution: This function may receive untrusted input. + + This function assumes the caller AuthenticateFmpImage() + already did basic validation for EFI_FIRMWARE_IMAGE_AUTHENTICATION. + + @param[in] Image Points to an FMP authentication image, started from EFI_FIRMWARE_IMAGE_AUTHENTICATION. + @param[in] ImageSize Size of the authentication image in bytes. + @param[in] PublicKeyData The public key data used to validate the signature. + @param[in] PublicKeyDataLength The length of the public key data. + + @retval RETURN_SUCCESS Authentication pass. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_SUCCESS. + @retval RETURN_SECURITY_VIOLATION Authentication fail. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_AUTH_ERROR. + @retval RETURN_INVALID_PARAMETER The image is in an invalid format. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT. + @retval RETURN_OUT_OF_RESOURCES No Authentication handler associated with CertType. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES. +**/ +RETURN_STATUS +FmpAuthenticatedHandlerRsa2048Sha256 ( + IN EFI_FIRMWARE_IMAGE_AUTHENTICATION *Image, + IN UINTN ImageSize, + IN CONST UINT8 *PublicKeyData, + IN UINTN PublicKeyDataLength + ) +{ + RETURN_STATUS Status; + EFI_CERT_BLOCK_RSA_2048_SHA256 *CertBlockRsa2048Sha256; + BOOLEAN CryptoStatus; + UINT8 Digest[SHA256_DIGEST_SIZE]; + UINT8 *PublicKey; + UINTN PublicKeyBufferSize; + VOID *HashContext; + VOID *Rsa; + + DEBUG ((DEBUG_INFO, "FmpAuthenticatedHandlerRsa2048Sha256 - Image: 0x%08x - 0x%08x\n", (UINTN)Image, (UINTN)ImageSize)); + + if (Image->AuthInfo.Hdr.dwLength != OFFSET_OF(WIN_CERTIFICATE_UEFI_GUID, CertData) + sizeof(EFI_CERT_BLOCK_RSA_2048_SHA256)) { + DEBUG((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256 - dwLength: 0x%04x, dwLength - 0x%04x\n", (UINTN)Image->AuthInfo.Hdr.dwLength, (UINTN)OFFSET_OF(WIN_CERTIFICATE_UEFI_GUID, CertData) + sizeof(EFI_CERT_BLOCK_RSA_2048_SHA256))); + return RETURN_INVALID_PARAMETER; + } + + CertBlockRsa2048Sha256 = (EFI_CERT_BLOCK_RSA_2048_SHA256 *)Image->AuthInfo.CertData; + if (!CompareGuid(&CertBlockRsa2048Sha256->HashType, &gEfiHashAlgorithmSha256Guid)) { + DEBUG((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256 - HashType: %g, expect - %g\n", &CertBlockRsa2048Sha256->HashType, &gEfiHashAlgorithmSha256Guid)); + return RETURN_INVALID_PARAMETER; + } + + 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")); + 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")); + Status = RETURN_OUT_OF_RESOURCES; + goto Done; + } + CryptoStatus = Sha256Update (HashContext, &CertBlockRsa2048Sha256->PublicKey, sizeof(CertBlockRsa2048Sha256->PublicKey)); + if (!CryptoStatus) { + DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Update() failed\n")); + Status = RETURN_OUT_OF_RESOURCES; + goto Done; + } + CryptoStatus = Sha256Final (HashContext, Digest); + if (!CryptoStatus) { + DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Final() failed\n")); + Status = RETURN_OUT_OF_RESOURCES; + goto Done; + } + + // + // Fail if the PublicKey is not one of the public keys in PcdRsa2048Sha256PublicKeyBuffer + // + PublicKey = (VOID *)PublicKeyData; + PublicKeyBufferSize = PublicKeyDataLength; + 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")); + Status = RETURN_SECURITY_VIOLATION; + goto Done; + } + + // + // Generate & Initialize RSA Context. + // + Rsa = RsaNew (); + if (Rsa == NULL) { + CryptoStatus = FALSE; + DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: RsaNew() failed\n")); + Status = RETURN_OUT_OF_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")); + Status = RETURN_OUT_OF_RESOURCES; + goto Done; + } + CryptoStatus = RsaSetKey (Rsa, RsaKeyE, mRsaE, sizeof (mRsaE)); + if (!CryptoStatus) { + DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: RsaSetKey(RsaKeyE) failed\n")); + 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")); + Status = RETURN_OUT_OF_RESOURCES; + goto Done; + } + + // It is a signature across the variable data and the Monotonic Count value. + CryptoStatus = Sha256Update ( + HashContext, + (UINT8 *)Image + sizeof(Image->MonotonicCount) + Image->AuthInfo.Hdr.dwLength, + ImageSize - sizeof(Image->MonotonicCount) - Image->AuthInfo.Hdr.dwLength + ); + if (!CryptoStatus) { + DEBUG((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Update() failed\n")); + Status = RETURN_OUT_OF_RESOURCES; + goto Done; + } + CryptoStatus = Sha256Update ( + HashContext, + (UINT8 *)&Image->MonotonicCount, + sizeof(Image->MonotonicCount) + ); + if (!CryptoStatus) { + DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Update() failed\n")); + Status = RETURN_OUT_OF_RESOURCES; + goto Done; + } + CryptoStatus = Sha256Final (HashContext, Digest); + if (!CryptoStatus) { + DEBUG ((DEBUG_ERROR, "FmpAuthenticatedHandlerRsa2048Sha256: Sha256Final() failed\n")); + 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")); + Status = RETURN_SECURITY_VIOLATION; + goto Done; + } + DEBUG ((DEBUG_INFO, "FmpAuthenticatedHandlerRsa2048Sha256: PASS verification\n")); + + 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 function is used to do the authentication for FMP capsule based upon + EFI_FIRMWARE_IMAGE_AUTHENTICATION. + + The FMP capsule image should start with EFI_FIRMWARE_IMAGE_AUTHENTICATION, + followed by the payload. + + If the return status is RETURN_SUCCESS, the caller may continue the rest + FMP update process. + If the return status is NOT RETURN_SUCCESS, the caller should stop the FMP + update process and convert the return status to LastAttemptStatus + to indicate that FMP update fails. + The LastAttemptStatus can be got from ESRT table or via + EFI_FIRMWARE_MANAGEMENT_PROTOCOL.GetImageInfo(). + + Caution: This function may receive untrusted input. + + @param[in] Image Points to an FMP authentication image, started from EFI_FIRMWARE_IMAGE_AUTHENTICATION. + @param[in] ImageSize Size of the authentication image in bytes. + @param[in] PublicKeyData The public key data used to validate the signature. + @param[in] PublicKeyDataLength The length of the public key data. + + @retval RETURN_SUCCESS Authentication pass. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_SUCCESS. + @retval RETURN_SECURITY_VIOLATION Authentication fail. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_AUTH_ERROR. + @retval RETURN_INVALID_PARAMETER The image is in an invalid format. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT. + @retval RETURN_UNSUPPORTED No Authentication handler associated with CertType. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT. + @retval RETURN_UNSUPPORTED Image or ImageSize is invalid. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_INVALID_FORMAT. + @retval RETURN_OUT_OF_RESOURCES No Authentication handler associated with CertType. + The LastAttemptStatus should be LAST_ATTEMPT_STATUS_ERROR_INSUFFICIENT_RESOURCES. +**/ +RETURN_STATUS +EFIAPI +AuthenticateFmpImage ( + IN EFI_FIRMWARE_IMAGE_AUTHENTICATION *Image, + IN UINTN ImageSize, + IN CONST UINT8 *PublicKeyData, + IN UINTN PublicKeyDataLength + ) +{ + GUID *CertType; + EFI_STATUS Status; + + if ((Image == NULL) || (ImageSize == 0)) { + return RETURN_UNSUPPORTED; + } + + if (ImageSize < sizeof(EFI_FIRMWARE_IMAGE_AUTHENTICATION)) { + DEBUG((DEBUG_ERROR, "AuthenticateFmpImage - ImageSize too small\n")); + return RETURN_INVALID_PARAMETER; + } + if (Image->AuthInfo.Hdr.dwLength <= OFFSET_OF(WIN_CERTIFICATE_UEFI_GUID, CertData)) { + DEBUG((DEBUG_ERROR, "AuthenticateFmpImage - dwLength too small\n")); + return RETURN_INVALID_PARAMETER; + } + if (Image->AuthInfo.Hdr.dwLength > MAX_UINTN - sizeof(UINT64)) { + DEBUG((DEBUG_ERROR, "AuthenticateFmpImage - dwLength too big\n")); + return RETURN_INVALID_PARAMETER; + } + if (ImageSize <= sizeof(Image->MonotonicCount) + Image->AuthInfo.Hdr.dwLength) { + DEBUG((DEBUG_ERROR, "AuthenticateFmpImage - ImageSize too small\n")); + return RETURN_INVALID_PARAMETER; + } + if (Image->AuthInfo.Hdr.wRevision != 0x0200) { + DEBUG((DEBUG_ERROR, "AuthenticateFmpImage - wRevision: 0x%02x, expect - 0x%02x\n", (UINTN)Image->AuthInfo.Hdr.wRevision, (UINTN)0x0200)); + return RETURN_INVALID_PARAMETER; + } + if (Image->AuthInfo.Hdr.wCertificateType != WIN_CERT_TYPE_EFI_GUID) { + DEBUG((DEBUG_ERROR, "AuthenticateFmpImage - wCertificateType: 0x%02x, expect - 0x%02x\n", (UINTN)Image->AuthInfo.Hdr.wCertificateType, (UINTN)WIN_CERT_TYPE_EFI_GUID)); + return RETURN_INVALID_PARAMETER; + } + + CertType = &Image->AuthInfo.CertType; + DEBUG((DEBUG_INFO, "AuthenticateFmpImage - CertType: %g\n", CertType)); + + if (CompareGuid (&gEfiCertTypeRsa2048Sha256Guid, CertType)) { + // + // Call the match handler to extract raw data for the input section data. + // + Status = FmpAuthenticatedHandlerRsa2048Sha256 ( + Image, + ImageSize, + PublicKeyData, + PublicKeyDataLength + ); + return Status; + } + + // + // Not found, the input guided section is not supported. + // + return RETURN_UNSUPPORTED; +} + diff --git a/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.inf b/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.inf new file mode 100644 index 0000000..fbff00e --- /dev/null +++ b/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.inf @@ -0,0 +1,53 @@ +## @file +# FMP Authentication RSA2048SHA256 handler. +# +# Instance of FmpAuthentication Library for DXE/PEI post memory phase. +# +# 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 = FmpAuthenticationLibRsa2048Sha256 + MODULE_UNI_FILE = FmpAuthenticationLibRsa2048Sha256.uni + FILE_GUID = 105FF0EA-A0C0-48A8-B8F7-E8B4D62A1019 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = FmpAuthenticationLib + +# +# The following information is for reference only and not required by the build tools. +# +# VALID_ARCHITECTURES = IA32 X64 IPF EBC +# + +[Sources] + FmpAuthenticationLibRsa2048Sha256.c + +[Packages] + MdePkg/MdePkg.dec + MdeModulePkg/MdeModulePkg.dec + SecurityPkg/SecurityPkg.dec + CryptoPkg/CryptoPkg.dec + +[LibraryClasses] + BaseLib + BaseMemoryLib + DebugLib + MemoryAllocationLib + BaseCryptLib + +[Pcd] + gEfiSecurityPkgTokenSpaceGuid.PcdRsa2048Sha256PublicKeyBuffer + +[Guids] + gEfiCertTypeRsa2048Sha256Guid + gEfiHashAlgorithmSha256Guid diff --git a/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.uni b/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.uni new file mode 100644 index 0000000..902edef --- /dev/null +++ b/SecurityPkg/Library/FmpAuthenticationLibRsa2048Sha256/FmpAuthenticationLibRsa2048Sha256.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 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
