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| author | Wenxing Hou <wenxing.hou@intel.com> | 2024-03-13 10:48:08 +0800 |
|---|---|---|
| committer | Liming Gao <gaoliming@byosoft.com.cn> | 2024-05-27 17:24:30 +0800 |
| commit | 27a7345882138b6e6a582c257756858611d29bd3 (patch) | |
| tree | d783269efffb9cd11675d6fd40820fabf80533e4 | |
| parent | b5412646db76cfc95b562699cb905befff7311d0 (diff) | |
| download | edk2-27a7345882138b6e6a582c257756858611d29bd3.tar.gz edk2-27a7345882138b6e6a582c257756858611d29bd3.tar.bz2 edk2-27a7345882138b6e6a582c257756858611d29bd3.zip | |
CryptoPkg: Add AuthenticodeVerify based on Mbedtls
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4177
Implement AuthenticodeVerify based on Mbedtls.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Yi Li <yi1.li@intel.com>
Signed-off-by: Wenxing Hou <wenxing.hou@intel.com>
Reviewed-by: Yi Li <yi1.li@intel.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
| -rw-r--r-- | CryptoPkg/Library/BaseCryptLibMbedTls/Pk/CryptAuthenticode.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLibMbedTls/Pk/CryptAuthenticode.c b/CryptoPkg/Library/BaseCryptLibMbedTls/Pk/CryptAuthenticode.c new file mode 100644 index 0000000000..9d8301b2c0 --- /dev/null +++ b/CryptoPkg/Library/BaseCryptLibMbedTls/Pk/CryptAuthenticode.c @@ -0,0 +1,214 @@ +/** @file
+ Authenticode Portable Executable Signature Verification which does not provide
+ real capabilities.
+
+Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "InternalCryptLib.h"
+#include <mbedtls/pkcs7.h>
+
+//
+// OID ASN.1 Value for SPC_INDIRECT_DATA_OBJID
+//
+GLOBAL_REMOVE_IF_UNREFERENCED const UINT8 mSpcIndirectOidValue[] = {
+ 0x2B, 0x06, 0x01, 0x04, 0x01, 0x82, 0x37, 0x02, 0x01, 0x04
+};
+
+/**
+ Verifies the validity of a PE/COFF Authenticode Signature as described in "Windows
+ Authenticode Portable Executable Signature Format".
+
+ Return FALSE to indicate this interface is not supported.
+
+ @param[in] AuthData Pointer to the Authenticode Signature retrieved from signed
+ PE/COFF image to be verified.
+ @param[in] DataSize Size of the Authenticode Signature in bytes.
+ @param[in] TrustedCert Pointer to a trusted/root certificate encoded in DER, which
+ is used for certificate chain verification.
+ @param[in] CertSize Size of the trusted certificate in bytes.
+ @param[in] ImageHash Pointer to the original image file hash value. The procedure
+ for calculating the image hash value is described in Authenticode
+ specification.
+ @param[in] HashSize Size of Image hash value in bytes.
+
+ @retval FALSE This interface is not supported.
+
+**/
+BOOLEAN
+EFIAPI
+AuthenticodeVerify (
+ IN CONST UINT8 *AuthData,
+ IN UINTN DataSize,
+ IN CONST UINT8 *TrustedCert,
+ IN UINTN CertSize,
+ IN CONST UINT8 *ImageHash,
+ IN UINTN HashSize
+ )
+{
+ BOOLEAN Status;
+ CONST UINT8 *OrigAuthData;
+ UINT8 *SpcIndirectDataContent;
+ UINT8 Asn1Byte;
+ UINTN ContentSize;
+ CONST UINT8 *SpcIndirectDataOid;
+ UINT8 *Ptr;
+ UINT8 *End;
+ INT32 Len;
+ UINTN ObjLen;
+
+ OrigAuthData = AuthData;
+
+ //
+ // Check input parameters.
+ //
+ if ((AuthData == NULL) || (TrustedCert == NULL) || (ImageHash == NULL)) {
+ return FALSE;
+ }
+
+ if ((DataSize > INT_MAX) || (CertSize > INT_MAX) || (HashSize > INT_MAX)) {
+ return FALSE;
+ }
+
+ if (DataSize <= HashSize) {
+ return FALSE;
+ }
+
+ Ptr = (UINT8 *)(UINTN)AuthData;
+ Len = (UINT32)DataSize;
+ End = Ptr + Len;
+
+ // ContentInfo
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE) != 0) {
+ return FALSE;
+ }
+
+ // ContentType
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_OID) != 0) {
+ return FALSE;
+ }
+
+ Ptr += ObjLen;
+ // content
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC) != 0) {
+ return FALSE;
+ }
+
+ End = Ptr + ObjLen;
+ // signedData
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE) != 0) {
+ return FALSE;
+ }
+
+ // version
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_INTEGER) != 0) {
+ return FALSE;
+ }
+
+ Ptr += ObjLen;
+ // digestAlgo
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SET) != 0) {
+ return FALSE;
+ }
+
+ Ptr += ObjLen;
+
+ // encapContentInfo
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE) != 0) {
+ return FALSE;
+ }
+
+ End = Ptr + ObjLen;
+ // eContentType
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_OID) != 0) {
+ return FALSE;
+ }
+
+ Status = FALSE;
+
+ SpcIndirectDataOid = Ptr;
+ if ((ObjLen != sizeof (mSpcIndirectOidValue)) ||
+ (CompareMem (
+ SpcIndirectDataOid,
+ mSpcIndirectOidValue,
+ sizeof (mSpcIndirectOidValue)
+ ) != 0))
+ {
+ //
+ // Un-matched SPC_INDIRECT_DATA_OBJID.
+ //
+ goto _Exit;
+ }
+
+ Ptr += ObjLen;
+ // eContent
+ if (mbedtls_asn1_get_tag (&Ptr, End, &ObjLen, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC) != 0) {
+ return FALSE;
+ }
+
+ SpcIndirectDataContent = Ptr;
+
+ //
+ // Retrieve the SEQUENCE data size from ASN.1-encoded SpcIndirectDataContent.
+ //
+ Asn1Byte = *(SpcIndirectDataContent + 1);
+
+ if ((Asn1Byte & 0x80) == 0) {
+ //
+ // Short Form of Length Encoding (Length < 128)
+ //
+ ContentSize = (UINTN)(Asn1Byte & 0x7F);
+ //
+ // Skip the SEQUENCE Tag;
+ //
+ SpcIndirectDataContent += 2;
+ } else if ((Asn1Byte & 0x81) == 0x81) {
+ //
+ // Long Form of Length Encoding (128 <= Length < 255, Single Octet)
+ //
+ ContentSize = (UINTN)(*(UINT8 *)(SpcIndirectDataContent + 2));
+ //
+ // Skip the SEQUENCE Tag;
+ //
+ SpcIndirectDataContent += 3;
+ } else if ((Asn1Byte & 0x82) == 0x82) {
+ //
+ // Long Form of Length Encoding (Length > 255, Two Octet)
+ //
+ ContentSize = (UINTN)(*(UINT8 *)(SpcIndirectDataContent + 2));
+ ContentSize = (ContentSize << 8) + (UINTN)(*(UINT8 *)(SpcIndirectDataContent + 3));
+ //
+ // Skip the SEQUENCE Tag;
+ //
+ SpcIndirectDataContent += 4;
+ } else {
+ goto _Exit;
+ }
+
+ //
+ // Compare the original file hash value to the digest retrieve from SpcIndirectDataContent
+ // defined in Authenticode
+ // NOTE: Need to double-check HashLength here!
+ //
+ if (ContentSize < HashSize) {
+ return FALSE;
+ }
+
+ if (CompareMem (SpcIndirectDataContent + ContentSize - HashSize, ImageHash, HashSize) != 0) {
+ //
+ // Un-matched PE/COFF Hash Value
+ //
+ goto _Exit;
+ }
+
+ //
+ // Verifies the PKCS#7 Signed Data in PE/COFF Authenticode Signature
+ //
+ Status = (BOOLEAN)Pkcs7Verify (OrigAuthData, DataSize, TrustedCert, CertSize, SpcIndirectDataContent, ContentSize);
+
+_Exit:
+
+ return Status;
+}
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