public Extension(DerValue derVal) throws IOException {
DerInputStream in = derVal.toDerInputStream();
extensionId = in.getOID();
DerValue val = in.getDerValue();
if (val.tag == DerValue.tag_Boolean) {
critical = val.getBoolean();
val = in.getDerValue();
extensionValue = val.getOctetString();
} else {
critical = false;
extensionValue = val.getOctetString();
}
}
public static X500Principal getIssuerX500Principal(X509CRL crl) {
try {
byte[] encoded = crl.getEncoded();
DerInputStream derIn = new DerInputStream(encoded);
DerValue tbsCert = derIn.getSequence(3)[0];
DerInputStream tbsIn = tbsCert.data;
DerValue tmp;
byte nextByte = (byte) tbsIn.peekByte();
if (nextByte == DerValue.tag_Integer) {
tmp = tbsIn.getDerValue();
}
tmp = tbsIn.getDerValue();
tmp = tbsIn.getDerValue();
byte[] principalBytes = tmp.toByteArray();
return new X500Principal(principalBytes);
} catch (Exception e) {
throw new RuntimeException("Could not parse issuer", e);
}
}
private void parse(DerValue val) throws CRLException, IOException {
if (readOnly) {
throw new CRLException("cannot over-write existing CRL");
}
if (val.getData() == null || val.tag != DerValue.tag_Sequence) {
throw new CRLException("Invalid DER-encoded CRL data");
}
signedCRL = val.toByteArray();
DerValue seq[] = new DerValue[3];
seq[0] = val.data.getDerValue();
seq[1] = val.data.getDerValue();
seq[2] = val.data.getDerValue();
if (val.data.available() != 0) {
throw new CRLException("signed overrun, bytes = " + val.data.available());
}
if (seq[0].tag != DerValue.tag_Sequence) {
throw new CRLException("signed CRL fields invalid");
}
sigAlgId = AlgorithmId.parse(seq[1]);
signature = seq[2].getBitString();
if (seq[1].data.available() != 0) {
throw new CRLException("AlgorithmId field overrun");
}
if (seq[2].data.available() != 0) {
throw new CRLException("Signature field overrun");
}
tbsCertList = seq[0].toByteArray();
DerInputStream derStrm = seq[0].data;
DerValue tmp;
byte nextByte;
version = 0;
nextByte = (byte) derStrm.peekByte();
if (nextByte == DerValue.tag_Integer) {
version = derStrm.getInteger();
if (version != 1) {
throw new CRLException("Invalid version");
}
}
tmp = derStrm.getDerValue();
AlgorithmId tmpId = AlgorithmId.parse(tmp);
if (!tmpId.equals(sigAlgId)) {
throw new CRLException("Signature algorithm mismatch");
}
infoSigAlgId = tmpId;
issuer = new X500Name(derStrm);
if (issuer.isEmpty()) {
throw new CRLException("Empty issuer DN not allowed in X509CRLs");
}
nextByte = (byte) derStrm.peekByte();
if (nextByte == DerValue.tag_UtcTime) {
thisUpdate = derStrm.getUTCTime();
} else if (nextByte == DerValue.tag_GeneralizedTime) {
thisUpdate = derStrm.getGeneralizedTime();
} else {
throw new CRLException("Invalid encoding for thisUpdate" + " (tag=" + nextByte + ")");
}
if (derStrm.available() == 0) {
return;
}
nextByte = (byte) derStrm.peekByte();
if (nextByte == DerValue.tag_UtcTime) {
nextUpdate = derStrm.getUTCTime();
} else if (nextByte == DerValue.tag_GeneralizedTime) {
nextUpdate = derStrm.getGeneralizedTime();
}
if (derStrm.available() == 0) {
return;
}
nextByte = (byte) derStrm.peekByte();
if ((nextByte == DerValue.tag_SequenceOf) && (!((nextByte & 0x0c0) == 0x080))) {
DerValue[] badCerts = derStrm.getSequence(4);
X500Principal crlIssuer = getIssuerX500Principal();
X500Principal badCertIssuer = crlIssuer;
for (int i = 0; i < badCerts.length; i++) {
X509CRLEntryImpl entry = new X509CRLEntryImpl(badCerts[i]);
badCertIssuer = getCertIssuer(entry, badCertIssuer);
entry.setCertificateIssuer(crlIssuer, badCertIssuer);
X509IssuerSerial issuerSerial =
new X509IssuerSerial(badCertIssuer, entry.getSerialNumber());
revokedMap.put(issuerSerial, entry);
revokedList.add(entry);
}
}
if (derStrm.available() == 0) {
return;
}
tmp = derStrm.getDerValue();
if (tmp.isConstructed() && tmp.isContextSpecific((byte) 0)) {
extensions = new CRLExtensions(tmp.data);
}
readOnly = true;
}