Examples with ASN1Integer org.bouncycastle.asn1.ASN1Integer used on opensource projects

Example 26 with ASN1Integer

use of org.bouncycastle.asn1.ASN1Integer in project keystore-explorer by kaikramer.

the class OpenSslPvkUtil method load.

/**
 * Load an unencrypted OpenSSL private key from the stream. The encoding of
 * the private key may be PEM or DER.
 *
 * @param is
 *            Stream to load the unencrypted private key from
 * @return The private key
 * @throws PrivateKeyEncryptedException
 *             If private key is encrypted
 * @throws CryptoException
 *             Problem encountered while loading the private key
 * @throws IOException
 *             An I/O error occurred
 */
public static PrivateKey load(InputStream is) throws CryptoException, IOException {
    byte[] streamContents = ReadUtil.readFully(is);
    EncryptionType encType = getEncryptionType(new ByteArrayInputStream(streamContents));
    if (encType == null) {
        throw new CryptoException(res.getString("NotValidOpenSsl.exception.message"));
    }
    if (encType == ENCRYPTED) {
        throw new PrivateKeyEncryptedException(res.getString("OpenSslIsEncrypted.exception.message"));
    }
    // Check if stream is PEM encoded
    PemInfo pemInfo = PemUtil.decode(new ByteArrayInputStream(streamContents));
    if (pemInfo != null) {
        // It is - get DER from PEM
        streamContents = pemInfo.getContent();
    }
    try {
        // Read OpenSSL DER structure
        ASN1InputStream asn1InputStream = new ASN1InputStream(streamContents);
        ASN1Primitive openSsl = asn1InputStream.readObject();
        asn1InputStream.close();
        if (openSsl instanceof ASN1Sequence) {
            ASN1Sequence seq = (ASN1Sequence) openSsl;
            if (seq.size() == 9) {
                // RSA private key
                BigInteger version = ((ASN1Integer) seq.getObjectAt(0)).getValue();
                BigInteger modulus = ((ASN1Integer) seq.getObjectAt(1)).getValue();
                BigInteger publicExponent = ((ASN1Integer) seq.getObjectAt(2)).getValue();
                BigInteger privateExponent = ((ASN1Integer) seq.getObjectAt(3)).getValue();
                BigInteger primeP = ((ASN1Integer) seq.getObjectAt(4)).getValue();
                BigInteger primeQ = ((ASN1Integer) seq.getObjectAt(5)).getValue();
                BigInteger primeExponentP = ((ASN1Integer) seq.getObjectAt(6)).getValue();
                BigInteger primeExponenetQ = ((ASN1Integer) seq.getObjectAt(7)).getValue();
                BigInteger crtCoefficient = ((ASN1Integer) seq.getObjectAt(8)).getValue();
                if (!version.equals(VERSION)) {
                    throw new CryptoException(MessageFormat.format(res.getString("OpenSslVersionIncorrect.exception.message"), "" + VERSION.intValue(), "" + version.intValue()));
                }
                RSAPrivateCrtKeySpec rsaPrivateCrtKeySpec = new RSAPrivateCrtKeySpec(modulus, publicExponent, privateExponent, primeP, primeQ, primeExponentP, primeExponenetQ, crtCoefficient);
                KeyFactory keyFactory = KeyFactory.getInstance("RSA");
                return keyFactory.generatePrivate(rsaPrivateCrtKeySpec);
            } else if (seq.size() == 6) {
                // DSA private key
                BigInteger version = ((ASN1Integer) seq.getObjectAt(0)).getValue();
                BigInteger primeModulusP = ((ASN1Integer) seq.getObjectAt(1)).getValue();
                BigInteger primeQ = ((ASN1Integer) seq.getObjectAt(2)).getValue();
                BigInteger generatorG = ((ASN1Integer) seq.getObjectAt(3)).getValue();
                // publicExponentY not req for pvk: sequence.getObjectAt(4);
                BigInteger secretExponentX = ((ASN1Integer) seq.getObjectAt(5)).getValue();
                if (!version.equals(VERSION)) {
                    throw new CryptoException(MessageFormat.format(res.getString("OpenSslVersionIncorrect.exception.message"), "" + VERSION.intValue(), "" + version.intValue()));
                }
                DSAPrivateKeySpec dsaPrivateKeySpec = new DSAPrivateKeySpec(secretExponentX, primeModulusP, primeQ, generatorG);
                KeyFactory keyFactory = KeyFactory.getInstance("DSA");
                return keyFactory.generatePrivate(dsaPrivateKeySpec);
            } else if (seq.size() >= 2) {
                // EC private key (RFC 5915)
                org.bouncycastle.asn1.sec.ECPrivateKey pKey = org.bouncycastle.asn1.sec.ECPrivateKey.getInstance(seq);
                AlgorithmIdentifier algId = new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, pKey.getParameters());
                PrivateKeyInfo privInfo = new PrivateKeyInfo(algId, pKey);
                return new JcaPEMKeyConverter().getPrivateKey(privInfo);
            } else {
                throw new CryptoException(MessageFormat.format(res.getString("OpenSslSequenceIncorrectSize.exception.message"), "" + seq.size()));
            }
        } else {
            throw new CryptoException(res.getString("OpenSslSequenceNotFound.exception.message"));
        }
    } catch (Exception ex) {
        throw new CryptoException(res.getString("NoLoadOpenSslPrivateKey.exception.message"), ex);
    }
}

Example 27 with ASN1Integer

use of org.bouncycastle.asn1.ASN1Integer in project keystore-explorer by kaikramer.

the class OpenSslPvkUtil method getEncryptionType.

/**
 * Detect if a OpenSSL private key is encrypted or not.
 *
 * @param is
 *            Input stream containing OpenSSL private key
 * @return Encryption type or null if not a valid OpenSSL private key
 * @throws IOException
 *             If an I/O problem occurred
 */
public static EncryptionType getEncryptionType(InputStream is) throws IOException {
    byte[] openSsl = ReadUtil.readFully(is);
    // In PEM format?
    PemInfo pemInfo = PemUtil.decode(new ByteArrayInputStream(openSsl));
    if (pemInfo != null) {
        String pemType = pemInfo.getType();
        // PEM type of OpenSSL?
        if (OPENSSL_RSA_PVK_PEM_TYPE.equals(pemType) || OPENSSL_DSA_PVK_PEM_TYPE.equals(pemType) || OPENSSL_EC_PVK_PEM_TYPE.equals(pemType)) {
            // Encrypted? It is if PEM contains appropriate header attributes/values
            PemAttributes pemAttributes = pemInfo.getAttributes();
            if ((pemAttributes != null) && (pemAttributes.get(PROC_TYPE_ATTR_NAME) != null) && (pemAttributes.get(PROC_TYPE_ATTR_NAME).getValue().equals(PROC_TYPE_ATTR_VALUE)) && (pemAttributes.get(DEK_INFO_ATTR_NAME) != null)) {
                return ENCRYPTED;
            } else {
                return UNENCRYPTED;
            }
        }
    }
    // In ASN.1 format?
    try {
        // If OpenSSL will be a sequence of 9 (RSA) or 6 (DSA) integers or 2-4 mixed elements (EC)
        ASN1Primitive key = ASN1Primitive.fromByteArray(openSsl);
        if (key instanceof ASN1Sequence) {
            ASN1Sequence seq = (ASN1Sequence) key;
            // }
            if ((seq.size() >= 2) && (seq.size() <= 4) && seq.getObjectAt(0) instanceof ASN1Integer) {
                BigInteger version = ((ASN1Integer) seq.getObjectAt(0)).getValue();
                if (version.equals(VERSION_EC)) {
                    if (seq.getObjectAt(1) instanceof ASN1OctetString) {
                        // ASN.1 OpenSSL is always unencrypted
                        return UNENCRYPTED;
                    } else {
                        // Not OpenSSL
                        return null;
                    }
                }
            }
            for (int i = 0; i < seq.size(); i++) {
                if (!(seq.getObjectAt(i) instanceof ASN1Integer)) {
                    // Not OpenSSL
                    return null;
                }
            }
            if ((seq.size() == 9) || (seq.size() == 6)) {
                // ASN.1 OpenSSL is always unencrypted
                return UNENCRYPTED;
            }
        }
    } catch (IOException ex) {
        // Not an OpenSSL file
        return null;
    }
    // Not an OpenSSL file
    return null;
}

Example 28 with ASN1Integer

use of org.bouncycastle.asn1.ASN1Integer in project keystore-explorer by kaikramer.

the class OpenSslPvkUtil method get.

/**
 * OpenSSL encode a private key.
 *
 * @return The encoding
 * @param privateKey
 *            The private key
 * @throws CryptoException
 *             Problem encountered while getting the encoded private key
 */
public static byte[] get(PrivateKey privateKey) throws CryptoException {
    // DER encoding for each key type is a sequence
    ASN1EncodableVector vec = new ASN1EncodableVector();
    if (privateKey instanceof ECPrivateKey) {
        try {
            ECPrivateKey ecPrivKey = (ECPrivateKey) privateKey;
            org.bouncycastle.asn1.sec.ECPrivateKey keyStructure = EccUtil.convertToECPrivateKeyStructure(ecPrivKey);
            return keyStructure.toASN1Primitive().getEncoded();
        } catch (IOException e) {
            throw new CryptoException(res.getString("NoDerEncodeOpenSslPrivateKey.exception.message"), e);
        }
    } else if (privateKey instanceof RSAPrivateCrtKey) {
        RSAPrivateCrtKey rsaPrivateKey = (RSAPrivateCrtKey) privateKey;
        vec.add(new ASN1Integer(VERSION));
        vec.add(new ASN1Integer(rsaPrivateKey.getModulus()));
        vec.add(new ASN1Integer(rsaPrivateKey.getPublicExponent()));
        vec.add(new ASN1Integer(rsaPrivateKey.getPrivateExponent()));
        vec.add(new ASN1Integer(rsaPrivateKey.getPrimeP()));
        vec.add(new ASN1Integer(rsaPrivateKey.getPrimeQ()));
        vec.add(new ASN1Integer(rsaPrivateKey.getPrimeExponentP()));
        vec.add(new ASN1Integer(rsaPrivateKey.getPrimeExponentQ()));
        vec.add(new ASN1Integer(rsaPrivateKey.getCrtCoefficient()));
    } else {
        DSAPrivateKey dsaPrivateKey = (DSAPrivateKey) privateKey;
        DSAParams dsaParams = dsaPrivateKey.getParams();
        BigInteger primeModulusP = dsaParams.getP();
        BigInteger primeQ = dsaParams.getQ();
        BigInteger generatorG = dsaParams.getG();
        BigInteger secretExponentX = dsaPrivateKey.getX();
        // Derive public key from private key parts, ie Y = G^X mod P
        BigInteger publicExponentY = generatorG.modPow(secretExponentX, primeModulusP);
        vec.add(new ASN1Integer(VERSION));
        vec.add(new ASN1Integer(primeModulusP));
        vec.add(new ASN1Integer(primeQ));
        vec.add(new ASN1Integer(generatorG));
        vec.add(new ASN1Integer(publicExponentY));
        vec.add(new ASN1Integer(secretExponentX));
    }
    DERSequence derSequence = new DERSequence(vec);
    try {
        return derSequence.getEncoded();
    } catch (IOException ex) {
        throw new CryptoException(res.getString("NoDerEncodeOpenSslPrivateKey.exception.message"), ex);
    }
}

Example 29 with ASN1Integer

use of org.bouncycastle.asn1.ASN1Integer in project keystore-explorer by kaikramer.

the class Pkcs8Util method getEncryptionType.

/**
 * Detect if a PKCS #8 private key is encrypted or not.
 *
 * @param is
 *            Input stream containing PKCS #8 private key
 * @return Encryption type or null if not a valid PKCS #8 private key
 * @throws IOException
 *             If an I/O problem occurred
 */
public static EncryptionType getEncryptionType(InputStream is) throws IOException {
    byte[] pkcs8 = ReadUtil.readFully(is);
    PemInfo pemInfo = PemUtil.decode(new ByteArrayInputStream(pkcs8));
    // PEM encoded?
    if (pemInfo != null) {
        String pemType = pemInfo.getType();
        // Encrypted in pem format?
        if (pemType.equals(Pkcs8Util.PKCS8_ENC_PVK_PEM_TYPE)) {
            return ENCRYPTED;
        } else // Unencrypted in pem format?
        if (pemType.equals(Pkcs8Util.PKCS8_UNENC_PVK_PEM_TYPE)) {
            return UNENCRYPTED;
        }
    }
    // In ASN.1 format?
    try {
        // Read in an ASN.1 and check structure against the following
        ASN1Primitive key = ASN1Primitive.fromByteArray(pkcs8);
        if (key instanceof ASN1Sequence) {
            ASN1Sequence sequence = (ASN1Sequence) key;
            // May be unencrypted
            if ((sequence.size() == 3) || (sequence.size() == 4)) {
                // @formatter:off
                /*
					 * Unencrypted PKCS #8 Private Key:
					 *
					 * PrivateKeyInfo ::= ASN1Sequence { version Version,
					 * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier,
					 * privateKey PrivateKey, attributes [0] IMPLICIT Attributes
					 * OPTIONAL }
					 *
					 * Version ::= ASN1Integer PrivateKeyAlgorithmIdentifier ::=
					 * AlgorithmIdentifier PrivateKey ::= OCTET STRING
					 * Attributes ::= SET OF Attribute
					 */
                // @formatter:on
                Object obj1 = sequence.getObjectAt(0);
                Object obj2 = sequence.getObjectAt(1);
                Object obj3 = sequence.getObjectAt(2);
                if (!(obj1 instanceof ASN1Integer)) {
                    return null;
                }
                ASN1Integer version = (ASN1Integer) obj1;
                if (!version.getValue().equals(BigInteger.ZERO)) {
                    return null;
                }
                if (!(obj2 instanceof ASN1Sequence)) {
                    return null;
                }
                if (!sequenceIsAlgorithmIdentifier((ASN1Sequence) obj2)) {
                    return null;
                }
                if (!(obj3 instanceof ASN1OctetString)) {
                    return null;
                }
                return UNENCRYPTED;
            } else // May be encrypted
            if (sequence.size() == 2) {
                // @formatter:off
                /*
					 * Encrypted PKCS #8 Private Key:
					 *
					 * EncryptedPrivateKeyInfo ::= ASN1Sequence {
					 * encryptionAlgorithm EncryptionAlgorithmIdentifier,
					 * encryptedData EncryptedData }
					 *
					 * EncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
					 * EncryptedData ::= OCTET STRING
					 */
                // @formatter:on
                Object obj1 = sequence.getObjectAt(0);
                Object obj2 = sequence.getObjectAt(1);
                if (!(obj1 instanceof ASN1Sequence)) {
                    return null;
                }
                if (!sequenceIsAlgorithmIdentifier((ASN1Sequence) obj1)) {
                    return null;
                }
                if (!(obj2 instanceof ASN1OctetString)) {
                    return null;
                }
                return ENCRYPTED;
            }
        }
    } catch (Exception ex) {
        // Structure not as expected for PKCS #8
        return null;
    }
    return null;
}

Example 30 with ASN1Integer

use of org.bouncycastle.asn1.ASN1Integer in project keystore-explorer by kaikramer.

the class Spkac method encodeRsaPublicKeyAsBitString.

private byte[] encodeRsaPublicKeyAsBitString(RSAPublicKey rsaPublicKey) throws SpkacException {
    try {
        ASN1EncodableVector vec = new ASN1EncodableVector();
        vec.add(new ASN1Integer(rsaPublicKey.getModulus()));
        vec.add(new ASN1Integer(rsaPublicKey.getPublicExponent()));
        DERSequence derSequence = new DERSequence(vec);
        return derSequence.getEncoded(ASN1Encoding.DER);
    } catch (Exception ex) {
        throw new SpkacException(res.getString("NoEncodeRsaPublicKey.exception.message"), ex);
    }
}