ExternalVendorCode/HIRS
1
0
Fork 0
mirror of https://github.com/nsacyber/HIRS.git synced 2025-03-18 18:15:20 +00:00
Code Issues Actions 9 Packages Projects Releases Wiki Activity

parsing event

Browse Source
This commit is contained in:
iadgovuser58 2024-04-09 18:02:53 -04:00 committed by chubtub
parent 9809be29ee
commit a544713448
2 changed files with 120 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

99
HIRS_Utils/src/main/java/hirs/utils/tpm/eventlog/events/DeviceSecurityEventData.java
View File

@ -37,5 +37,104 @@ import java.util.List;
* 4. First 16 bytes of the structure header is an ASCII "SPDM Device Sec"
*/
public class DeviceSecurityEventData {
// /**
// * Minor Version.
// */
// @Getter
// private String versionMinor = "";
// /**
// * Major Version.
// */
// @Getter
// private String versionMajor = "";
// /**
// * Specification errata version.
// */
// @Getter
// private String errata = "";
/**
* Signature (text) data.
*/
@Getter
private String signature = "";
/**
* Platform class.
*/
@Getter
private String version = "";
// /**
// * Algorithm count.
// */
// @Getter
// private int numberOfAlg = 0;
// /**
// * True if event log uses Crypto Agile format.
// */
// @Getter
// private boolean cryptoAgile = false;
// /**
// * Algorithm list.
// */
// private List<String> algList;
/**
* DeviceSecurityEventData Constructor.
*
* @param deviceSecurityEventDataBytes byte array holding the spec ID Event.
*/
public DeviceSecurityEventData(final byte[] deviceSecurityEventDataBytes) {
// algList = new ArrayList<>();
byte[] signatureBytes = new byte[UefiConstants.SIZE_16];
System.arraycopy(deviceSecurityEventDataBytes, 0, signatureBytes, 0, UefiConstants.SIZE_16);
//signature = HexUtils.byteArrayToHexString(signatureBytes);
signature = new String(signatureBytes, StandardCharsets.UTF_8)
.substring(0, UefiConstants.SIZE_15);
byte[] versionBytes = new byte[UefiConstants.SIZE_4];
System.arraycopy(deviceSecurityEventDataBytes, UefiConstants.OFFSET_16, versionBytes, 0,
UefiConstants.SIZE_4);
version = HexUtils.byteArrayToHexString(versionBytes);
if (version == "1") {
} else if (version == "2") {
}
// byte[] platformClassBytes = new byte[UefiConstants.SIZE_4];
// System.arraycopy(efiSpecId, UefiConstants.OFFSET_16, platformClassBytes, 0,
// UefiConstants.SIZE_4);
// platformClass = HexUtils.byteArrayToHexString(platformClassBytes);
//
// byte[] specVersionMinorBytes = new byte[1];
// System.arraycopy(efiSpecId, UefiConstants.OFFSET_20, specVersionMinorBytes, 0, 1);
// versionMinor = HexUtils.byteArrayToHexString(specVersionMinorBytes);
//
// byte[] specVersionMajorBytes = new byte[1];
// System.arraycopy(efiSpecId, UefiConstants.OFFSET_21, specVersionMajorBytes, 0, 1);
// versionMajor = HexUtils.byteArrayToHexString(specVersionMajorBytes);
//
// byte[] specErrataBytes = new byte[1];
// System.arraycopy(efiSpecId, UefiConstants.OFFSET_22, specErrataBytes, 0, 1);
// errata = HexUtils.byteArrayToHexString(specErrataBytes);
//
// byte[] numberOfAlgBytes = new byte[UefiConstants.SIZE_4];
// System.arraycopy(efiSpecId, UefiConstants.OFFSET_24, numberOfAlgBytes, 0,
// UefiConstants.SIZE_4);
// numberOfAlg = HexUtils.leReverseInt(numberOfAlgBytes);
//
// byte[] algorithmIDBytes = new byte[UefiConstants.SIZE_2];
// int algLocation = UefiConstants.SIZE_28;
// for (int i = 0; i < numberOfAlg; i++) {
// System.arraycopy(efiSpecId, algLocation + UefiConstants.OFFSET_4 * i, algorithmIDBytes,
// 0, UefiConstants.SIZE_2);
// String alg = TcgTpmtHa.tcgAlgIdToString(HexUtils.leReverseInt(algorithmIDBytes));
// algList.add(alg);
// }
// if ((algList.size() == 1) && (algList.get(0).compareTo("SHA1") == 0)) {
// cryptoAgile = false;
// } else {
// cryptoAgile = true;
// }
}
}

42
HIRS_Utils/src/main/java/hirs/utils/tpm/eventlog/events/EvEfiSpdmFirmwareBlob.java
View File

@ -55,22 +55,22 @@ public class EvEfiSpdmFirmwareBlob {
*/
public EvEfiSpdmFirmwareBlob(final byte[] eventData) throws UnsupportedEncodingException {
byte[] signatureBytes = new byte[UefiConstants.SIZE_15];
// System.arraycopy(eventData, 0, signatureBytes, 0, UefiConstants.SIZE_15);
// signature = new String(signatureBytes, StandardCharsets.UTF_8);
// signature = signature.replaceAll("[^\\P{C}\t\r\n]", ""); // remove null characters
// if (signature.contains("Spec ID Event03")) { // implies CryptAgileFormat
// specIDEvent = new EvEfiSpecIdEvent(eventData);
// bSpecIDEvent = true;
// }
System.arraycopy(eventData, 0, signatureBytes, 0, UefiConstants.SIZE_15);
signature = new String(signatureBytes, StandardCharsets.UTF_8);
signature = signature.replaceAll("[^\\P{C}\t\r\n]", ""); // remove null characters
if (signature.contains("SPDM Device Sec")) { // implies Device Security event
deviceSecurityEventData = new DeviceSecurityEventData(eventData);
bDeviceSecurityEventData = true;
}
}
/**
* Determines if this event is a SpecIDEvent.
* Determines if this event is a DeviceSecurityEventData.
*
* @return true of the event is a SpecIDEvent.
* @return true of the event is a DeviceSecurityEventData.
*/
public boolean isDeviceSecurityEventDataHeader() {
return bDeviceSecurityEventDataHeader;
public boolean isDeviceSecurityEventData() {
return bDeviceSecurityEventData;
}
/**
@ -78,10 +78,10 @@ public class EvEfiSpdmFirmwareBlob {
*
* @return Human readable description of this event.
*/
// public String toString() {
// String specInfo = "";
// if (bSpecIDEvent) {
// specInfo += " Signature = Spec ID Event03 : ";
public String toString() {
String specInfo = "";
if (bDeviceSecurityEventData) {
specInfo += " Signature = SPDM Device Sec : ";
// if (specIDEvent.isCryptoAgile()) {
// specInfo += "Log format is Crypto Agile\n";
// } else {
@ -90,10 +90,10 @@ public class EvEfiSpdmFirmwareBlob {
// specInfo += " Platform Profile Specification version = "
// + specIDEvent.getVersionMajor() + "." + specIDEvent.getVersionMinor()
// + " using errata version " + specIDEvent.getErrata();
// } else {
// specInfo = "EV_NO_ACTION event named " + signature
// + " encountered but support for processing it has not been added to this application.\n";
// }
// return specInfo;
// }
} else {
specInfo = "EV_EFI_SPDM_FIRMWARE_BLOB event named " + signature
+ " encountered but support for processing it has not been added to this application.\n";
}
return specInfo;
}
}