private void decode() throws IOException {
DERReader der = new DERReader(encoded);
DERValue val = der.read();
if (val.getTag() != DER.SEQUENCE) throw new IOException("malformed EncryptedPrivateKeyInfo");
val = der.read();
if (val.getTag() != DER.SEQUENCE) throw new IOException("malformed AlgorithmIdentifier");
int algpLen = val.getLength();
DERValue oid = der.read();
if (oid.getTag() != DER.OBJECT_IDENTIFIER)
throw new IOException("malformed AlgorithmIdentifier");
algOid = (OID) oid.getValue();
if (algpLen == 0) {
val = der.read();
if (val.getTag() != 0) {
encodedParams = val.getEncoded();
der.read();
}
} else if (oid.getEncodedLength() < val.getLength()) {
val = der.read();
encodedParams = val.getEncoded();
}
val = der.read();
if (val.getTag() != DER.OCTET_STRING) throw new IOException("malformed AlgorithmIdentifier");
encryptedData = (byte[]) val.getValue();
}
public NameConstraints(byte[] encoded) throws IOException {
super(encoded);
DERReader der = new DERReader(encoded);
DERValue value = der.read();
if (!value.isConstructed()) {
throw new IOException("malformed NameConstraints");
}
permittedSubtrees = new LinkedList<GeneralSubtree>();
excludedSubtrees = new LinkedList<GeneralSubtree>();
int len = 0;
if (len < value.getLength()) {
DERValue subtrees = der.read();
if (subtrees.getTag() == 0) {
int len2 = 0;
while (len2 < subtrees.getLength()) {
DERValue subtree = der.read();
permittedSubtrees.add(new GeneralSubtree(subtree.getEncoded()));
der.skip(subtree.getLength());
len2 += subtree.getEncodedLength();
}
len += subtrees.getEncodedLength();
if (len < value.getLength()) {
subtrees = der.read();
if (subtrees.getTag() != 1)
throw new IOException(
"unexpected tag " + subtrees.getTag() + " (expecting 1 for excludedSubtrees)");
len2 = 0;
while (len2 < subtrees.getLength()) {
DERValue subtree = der.read();
excludedSubtrees.add(new GeneralSubtree(subtree.getEncoded()));
der.skip(subtree.getLength());
len2 += subtree.getEncodedLength();
}
}
} else if (subtrees.getTag() == 1) {
int len2 = 0;
while (len2 < subtrees.getLength()) {
DERValue subtree = der.read();
excludedSubtrees.add(new GeneralSubtree(subtree.getEncoded()));
der.skip(subtree.getLength());
len2 += subtree.getEncodedLength();
}
} else throw new IOException("unexpected tag " + subtrees.getTag() + " (expecting 0 or 1)");
}
}
public ExtendedKeyUsage(final byte[] encoded) throws IOException {
super(encoded);
DERReader der = new DERReader(encoded);
DERValue usageList = der.read();
if (!usageList.isConstructed()) throw new IOException("malformed ExtKeyUsageSyntax");
int len = 0;
purposeIds = new LinkedList<OID>();
while (len < usageList.getLength()) {
DERValue val = der.read();
if (val.getTag() != DER.OBJECT_IDENTIFIER) throw new IOException("malformed KeyPurposeId");
purposeIds.add((OID) val.getValue());
len += val.getEncodedLength();
}
}
/**
* Parse an encoded PKCS#7 SignedData object. The ASN.1 format of this object is:
*
* <pre>
* SignedData ::= SEQUENCE {
* version Version, -- always 1 for PKCS7 v1.5
* digestAlgorithms DigestAlgorithmIdentifiers,
* contentInfo ContentInfo,
* certificates [0] IMPLICIT ExtendedCertificatesAndCertificates OPTIONAL,
* crls [1] IMPLICIT CertificateRevocationLists OPTIONAL,
* signerInfos SignerInfos }
*
* Version ::= INTEGER
*
* DigestAlgorithmIdentifiers ::= SET OF DigestAlgorithmIdentifier
*
* DigestAlgorithmIdentifier ::= AlgorithmIdentifier
*
* ContentInfo ::= SEQUENCE {
* contentType ContentType,
* content [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL }
*
* ContentType ::= OBJECT IDENTIFIER
*
* ExtendedCertificatesAndCertificates ::=
* SET OF ExtendedCertificatesAndCertificate
*
* ExtendedCertificatesAndCertificate ::= CHOICE {
* certificate Certificate, -- from X.509
* extendedCertificate [0] IMPLICIT ExtendedCertificate }
*
* CertificateRevocationLists ::= SET OF CertificateRevocationList
* -- from X.509
*
* SignerInfos ::= SET OF SignerInfo
*
* SignerInfo ::= SEQUENCE {
* version Version, -- always 1 for PKCS7 v1.5
* issuerAndSerialNumber IssuerAndSerialNumber,
* digestAlgorithm DigestAlgorithmIdentifier,
* authenticatedAttributes [0] IMPLICIT Attributes OPTIONAL,
* digestEncryptionAlgorithm DigestEncryptionAlgorithmIdentifier,
* encryptedDigest EncryptedDigest,
* unauthenticatedAttributes [1] IMPLICIT Attributes OPTIONAL }
*
* EncryptedDigest ::= OCTET STRING
* </pre>
*
* <p>(Readers who are confused as to why it takes 40 levels of indirection to specify "data with
* a signature", rest assured that the present author is as confused as you are).
*/
public PKCS7SignedData(BERReader ber) throws CRLException, CertificateException, IOException {
CertificateFactory x509 = CertificateFactory.getInstance("X509");
DERValue val = ber.read();
if (!val.isConstructed()) throw new BEREncodingException("malformed ContentInfo");
val = ber.read();
if (val.getTag() != BER.OBJECT_IDENTIFIER)
throw new BEREncodingException("malformed ContentType");
if (!PKCS7_SIGNED_DATA.equals(val.getValue()))
throw new BEREncodingException("content is not SignedData");
val = ber.read();
if (val.getTag() != 0) throw new BEREncodingException("malformed Content");
val = ber.read();
if (!val.isConstructed()) throw new BEREncodingException("malformed SignedData");
if (Configuration.DEBUG) log.fine("SignedData: " + val);
val = ber.read();
if (val.getTag() != BER.INTEGER) throw new BEREncodingException("expecting Version");
version = (BigInteger) val.getValue();
if (Configuration.DEBUG) log.fine(" Version: " + version);
digestAlgorithms = new HashSet();
val = ber.read();
if (!val.isConstructed())
throw new BEREncodingException("malformed DigestAlgorithmIdentifiers");
if (Configuration.DEBUG) log.fine(" DigestAlgorithmIdentifiers: " + val);
int count = 0;
DERValue val2 = ber.read();
while (val2 != BER.END_OF_SEQUENCE && (val.getLength() > 0 && val.getLength() > count)) {
if (!val2.isConstructed()) throw new BEREncodingException("malformed AlgorithmIdentifier");
if (Configuration.DEBUG) log.fine(" AlgorithmIdentifier: " + val2);
count += val2.getEncodedLength();
val2 = ber.read();
if (val2.getTag() != BER.OBJECT_IDENTIFIER)
throw new BEREncodingException("malformed AlgorithmIdentifier");
if (Configuration.DEBUG) log.fine(" digestAlgorithmIdentifiers OID: " + val2.getValue());
List algId = new ArrayList(2);
algId.add(val2.getValue());
val2 = ber.read();
if (val2 != BER.END_OF_SEQUENCE) {
count += val2.getEncodedLength();
if (val2.getTag() == BER.NULL) algId.add(null);
else algId.add(val2.getEncoded());
if (val2.isConstructed()) ber.skip(val2.getLength());
if (BERValue.isIndefinite(val)) val2 = ber.read();
} else algId.add(null);
if (Configuration.DEBUG) {
log.fine(" digestAlgorithmIdentifiers params: ");
log.fine(
Util.dumpString((byte[]) algId.get(1), " digestAlgorithmIdentifiers params: "));
}
digestAlgorithms.add(algId);
}
val = ber.read();
if (!val.isConstructed()) throw new BEREncodingException("malformed ContentInfo");
if (Configuration.DEBUG) log.fine(" ContentInfo: " + val);
val2 = ber.read();
if (val2.getTag() != BER.OBJECT_IDENTIFIER)
throw new BEREncodingException("malformed ContentType");
contentType = (OID) val2.getValue();
if (Configuration.DEBUG) log.fine(" ContentType OID: " + contentType);
if (BERValue.isIndefinite(val)
|| (val.getLength() > 0 && val.getLength() > val2.getEncodedLength())) {
val2 = ber.read();
if (val2 != BER.END_OF_SEQUENCE) {
content = val2.getEncoded();
if (BERValue.isIndefinite(val)) val2 = ber.read();
}
}
if (Configuration.DEBUG) {
log.fine(" Content: ");
log.fine(Util.dumpString(content, " Content: "));
}
val = ber.read();
if (val.getTag() == 0) {
if (!val.isConstructed())
throw new BEREncodingException("malformed ExtendedCertificatesAndCertificates");
if (Configuration.DEBUG) log.fine(" ExtendedCertificatesAndCertificates: " + val);
count = 0;
val2 = ber.read();
List certs = new LinkedList();
while (val2 != BER.END_OF_SEQUENCE && (val.getLength() > 0 && val.getLength() > count)) {
Certificate cert = x509.generateCertificate(new ByteArrayInputStream(val2.getEncoded()));
if (Configuration.DEBUG) log.fine(" Certificate: " + cert);
certs.add(cert);
count += val2.getEncodedLength();
ber.skip(val2.getLength());
if (BERValue.isIndefinite(val) || val.getLength() > count) val2 = ber.read();
}
certificates = (Certificate[]) certs.toArray(new Certificate[certs.size()]);
val = ber.read();
}
if (val.getTag() == 1) {
if (!val.isConstructed())
throw new BEREncodingException("malformed CertificateRevocationLists");
if (Configuration.DEBUG) log.fine(" CertificateRevocationLists: " + val);
count = 0;
val2 = ber.read();
List crls = new LinkedList();
while (val2 != BER.END_OF_SEQUENCE && (val.getLength() > 0 && val.getLength() > count)) {
CRL crl = x509.generateCRL(new ByteArrayInputStream(val2.getEncoded()));
if (Configuration.DEBUG) log.fine(" CRL: " + crl);
crls.add(crl);
count += val2.getEncodedLength();
ber.skip(val2.getLength());
if (BERValue.isIndefinite(val) || val.getLength() > count) val2 = ber.read();
}
this.crls = (CRL[]) crls.toArray(new CRL[crls.size()]);
val = ber.read();
}
signerInfos = new HashSet();
if (!val.isConstructed()) throw new BEREncodingException("malformed SignerInfos");
if (Configuration.DEBUG) log.fine(" SignerInfos: " + val);
// FIXME read this more carefully.
// Since we are just reading a file (probably) we just read until we
// reach the end.
while (true) {
int i = ber.peek();
if (i == 0 || i == -1) break;
signerInfos.add(new SignerInfo(ber));
}
}