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Enhancements to ACA certificate generation

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iadgovuser59 2024-10-22 15:58:45 -04:00
parent d908fda065
commit 2c86bf230e
6 changed files with 47 additions and 24 deletions
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2
HIRS_AttestationCA/src/main/java/hirs/attestationca/persist/provision/AbstractProcessor.java
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@ -116,7 +116,7 @@ public class AbstractProcessor {
+ "Unable to issue certificates");
}
ContentSigner signer = new JcaContentSignerBuilder("SHA1WithRSA")
ContentSigner signer = new JcaContentSignerBuilder("SHA256WithRSA")
.setProvider("BC").build(getPrivateKey());
X509CertificateHolder holder = builder.build(signer);
return new JcaX509CertificateConverter()

21
HIRS_AttestationCA/src/main/java/hirs/attestationca/persist/provision/CertificateRequestProcessor.java
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@ -160,16 +160,14 @@ public class CertificateRequestProcessor extends AbstractProcessor {
attestationCertificate);
byte[] derEncodedLdevidCertificate = ProvisionUtils.getDerEncodedCertificate(
ldevidCertificate);
String pemEncodedAttestationCertificate = ProvisionUtils.getPemEncodedCertificate(
attestationCertificate);
String pemEncodedLdevidCertificate = ProvisionUtils.getPemEncodedCertificate(
ldevidCertificate);
// We validated the nonce and made use of the identity claim so state can be deleted
tpm2ProvisionerStateRepository.delete(tpm2ProvisionerState);
// Package the signed certificates into a response
ByteString certificateBytes = ByteString
.copyFrom(derEncodedAttestationCertificate);
ByteString ldevidCertificateBytes = ByteString
.copyFrom(derEncodedLdevidCertificate);
boolean generateAtt = saveAttestationCertificate(certificateRepository, derEncodedAttestationCertificate,
endorsementCredential, platformCredentials, device, false);
boolean generateLDevID = saveAttestationCertificate(certificateRepository, derEncodedLdevidCertificate,
@ -178,10 +176,10 @@ public class CertificateRequestProcessor extends AbstractProcessor {
ProvisionerTpm2.CertificateResponse.Builder builder = ProvisionerTpm2.CertificateResponse.
newBuilder().setStatus(ProvisionerTpm2.ResponseStatus.PASS);
if (generateAtt) {
builder = builder.setCertificate(certificateBytes);
builder = builder.setCertificate(pemEncodedAttestationCertificate);
}
if (generateLDevID) {
builder = builder.setLdevidCertificate(ldevidCertificateBytes);
builder = builder.setLdevidCertificate(pemEncodedLdevidCertificate);
}
ProvisionerTpm2.CertificateResponse response = builder.build();
@ -190,20 +188,19 @@ public class CertificateRequestProcessor extends AbstractProcessor {
else {
byte[] derEncodedAttestationCertificate = ProvisionUtils.getDerEncodedCertificate(
attestationCertificate);
String pemEncodedAttestationCertificate = ProvisionUtils.getPemEncodedCertificate(
attestationCertificate);
// We validated the nonce and made use of the identity claim so state can be deleted
tpm2ProvisionerStateRepository.delete(tpm2ProvisionerState);
// Package the signed certificates into a response
ByteString certificateBytes = ByteString
.copyFrom(derEncodedAttestationCertificate);
ProvisionerTpm2.CertificateResponse.Builder builder = ProvisionerTpm2.CertificateResponse.
newBuilder().setStatus(ProvisionerTpm2.ResponseStatus.PASS);
boolean generateAtt = saveAttestationCertificate(certificateRepository, derEncodedAttestationCertificate,
endorsementCredential, platformCredentials, device, false);
if (generateAtt) {
builder = builder.setCertificate(certificateBytes);
builder = builder.setCertificate(pemEncodedAttestationCertificate);
}
ProvisionerTpm2.CertificateResponse response = builder.build();

26
HIRS_AttestationCA/src/main/java/hirs/attestationca/persist/provision/helper/ProvisionUtils.java
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@ -18,6 +18,7 @@ import hirs.utils.enums.DeviceInfoEnums;
import lombok.extern.log4j.Log4j2;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.lang3.ArrayUtils;
import org.bouncycastle.openssl.jcajce.JcaPEMWriter;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
@ -28,6 +29,8 @@ import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.OAEPParameterSpec;
import javax.crypto.spec.PSource;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.io.StringWriter;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
@ -107,6 +110,29 @@ public final class ProvisionUtils {
}
}
/**
* Helper method to extract a PEM encoded certificate from an X509 certificate.
*
* @param certificate the X509 certificate to be converted to PEM encoding
* @throws {@link UnexpectedServerException} if error occurs during encoding retrieval
* @return the string representing the PEM encoded certificate
*/
public static String getPemEncodedCertificate(final X509Certificate certificate) {
try {
final StringWriter stringWriter = new StringWriter();
final JcaPEMWriter pemWriter = new JcaPEMWriter(stringWriter);
pemWriter.writeObject(certificate);
pemWriter.flush();
pemWriter.close();
return stringWriter.toString();
} catch (IOException ioEx) {
log.error("Error converting certificate to PEM Encoding.", ioEx);
throw new UnexpectedServerException(
"Encountered error while converting X509 Certificate to PEM Encoding: "
+ ioEx.getMessage(), ioEx);
}
}
/**
* Parse public key from public data segment generated by TPM 2.0.
* @param publicArea the public area segment to parse

4
HIRS_Provisioner.NET/hirs/Resources/ProvisionerTpm2.proto
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@ -95,8 +95,8 @@ message CertificateRequest {
}
message CertificateResponse {
optional bytes certificate = 1;
optional string certificate = 1;
optional ResponseStatus status = 2 [default = FAIL];
optional bytes ldevidCertificate = 3;
optional string ldevidCertificate = 3;
}

14
HIRS_Provisioner.NET/hirs/src/provisioner/Provisioner.cs
View File

@ -297,7 +297,7 @@ namespace hirs {
tpm.GetQuote(CommandTpm.DefaultAkHandle, Tpm2Lib.TpmAlgId.Sha256, recoveredSecret, out CommandTpmQuoteResponse ctqr, selectPcrs);
Log.Information("----> Nonce successfully decrypted. Sending attestation certificate request");
CertificateRequest akCertReq = acaClient.CreateAkCertificateRequest(recoveredSecret, ctqr);
byte[] certificate;
string certificate;
Log.Debug("Communicate certificate request to the ACA.");
CertificateResponse cr = await acaClient.PostCertificateRequest(akCertReq);
Log.Debug("Response received from the ACA regarding the certificate request.");
@ -311,34 +311,34 @@ namespace hirs {
}
}
if (cr.HasCertificate) {
certificate = cr.Certificate.ToByteArray(); // contains certificate
certificate = cr.Certificate.ToString(); // contains certificate
String certificateDirPath = settings.certificate_output_directory;
if (certificateDirPath != null) {
String certificateFilePath = FormatCertificatePath(dv, certificateDirPath, DefaultAKCertFileName);
try {
File.WriteAllBytes(certificateFilePath, certificate);
File.WriteAllText(certificateFilePath, certificate);
Log.Debug("Attestation key certificate written to local file system: {0}", certificateFilePath);
}
catch (Exception) {
Log.Debug("Failed to write attestation key certificate to local file system.");
}
}
Log.Debug("Printing attestation key certificate: " + BitConverter.ToString(certificate));
Log.Debug("Printing attestation key certificate: " + certificate);
}
if (cr.HasLdevidCertificate) {
certificate = cr.LdevidCertificate.ToByteArray(); // contains certificate
certificate = cr.LdevidCertificate.ToString(); // contains certificate
String certificateDirPath = settings.certificate_output_directory;
if (certificateDirPath != null) {
String certificateFilePath = FormatCertificatePath(dv, certificateDirPath, DefaultLDevIDCertFileName);
try {
File.WriteAllBytes(certificateFilePath, certificate);
File.WriteAllText(certificateFilePath, certificate);
Log.Debug("LDevID certificate written to local file system: {0}", certificateFilePath);
}
catch (Exception) {
Log.Debug("Failed to write LDevID certificate to local file system.");
}
}
Log.Debug("Printing LDevID certificate: " + BitConverter.ToString(certificate));
Log.Debug("Printing LDevID certificate: " + certificate);
}
} else {
result = ClientExitCodes.MAKE_CREDENTIAL_BLOB_MALFORMED;

4
HIRS_ProvisionerTPM2/src/ProvisionerTpm2.proto
View File

@ -95,8 +95,8 @@ message CertificateRequest {
}
message CertificateResponse {
optional bytes certificate = 1;
optional string certificate = 1;
optional ResponseStatus status = 2 [default = FAIL];
optional bytes ldevidCertificate = 3;
optional string ldevidCertificate = 3;
}