Example usage for java.security.interfaces RSAPublicKey getModulus

Introduction

In this page you can find the example usage for java.security.interfaces RSAPublicKey getModulus.

Prototype

public BigInteger getModulus();

Source Link

Document

Returns the modulus.

Usage

From source file:com.glaf.core.security.RSAUtils.java

public static void main(String[] args) {
    RSAPublicKey publicKey = RSAUtils.getDefaultPublicKey();
    System.out.println(new String(Hex.encodeHex(publicKey.getModulus().toByteArray())));
    System.out.println(new String(Hex.encodeHex(publicKey.getPublicExponent().toByteArray())));
    System.out.println(RSAUtils.decryptStringByJs(
            "2d7754804ecfb3c3e6fb7d12cdf439036f1d8e2ad34c5a6467bd6f1c165bb47f0fa57134b013aba49be5edf5231c2f7b611af5e974b521ea715b1a6bad6cfbf4ba8e0886c5fe1ce903d30ae0c8cd5f422860d67fa4fd3e2a8fc7872c6b052a6c8f480cfde5e147d959f3db5032767c393ff271742f66be7657290a5de218e375"));
}

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From source file:Main.java

private static byte[] getPKBytes(PublicKey pk) {
    if (pk instanceof RSAPublicKey) {
        RSAPublicKey k = (RSAPublicKey) pk;
        return k.getModulus().toByteArray();
    } else if (pk instanceof DSAPublicKey) {
        DSAPublicKey k = (DSAPublicKey) pk;
        return k.getY().toByteArray();
    }//from   www . ja  v a  2s  .c  o m
    return null;
}

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From source file:Main.java

public static BigInteger computeUnblindSignature(BigInteger r, BigInteger bs)
        throws UnsupportedEncodingException {
    RSAPublicKey pubKey = (RSAPublicKey) getPublicKey(public_key);
    BigInteger n = pubKey.getModulus();

    BigInteger s = r.modInverse(n).multiply(bs).mod(n);

    return s;// w  w  w  .  j av  a 2  s .co m
}

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From source file:Main.java

public static boolean RsaPublicKeyComparer(RSAPublicKey key1, RSAPublicKey key2) {
    return key1.getPublicExponent().compareTo(key2.getPublicExponent()) == 0
            && key1.getModulus().compareTo(key2.getModulus()) == 0;
}

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From source file:org.cloudfoundry.identity.uaa.oauth.jwk.JsonWebKeyHelper.java

public static JsonWebKey fromPEMPrivateKey(String key) {
    KeyPair pair = KeyInfo.parseKeyPair(key);
    RSAPublicKey rsaKey = (RSAPublicKey) pair.getPublic();
    BigInteger modulus = rsaKey.getModulus();
    BigInteger exponent = rsaKey.getPublicExponent();
    Map<String, Object> properties = new HashMap();
    properties.put("n", base64.encodeAsString(modulus.toByteArray()));
    properties.put("e", base64.encodeAsString(exponent.toByteArray()));
    properties.put("kty", "RSA");
    properties.put("use", sig.name());
    properties.put("value", KeyInfo.pemEncodePublicKey(rsaKey));
    return new JsonWebKey(properties);
}

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From source file:org.picketbox.json.key.RSAKey.java

public static RSAKey convert(RSAPublicKey publicKey) throws ProcessingException {
    BigInteger modulus = publicKey.getModulus();
    BigInteger exponent = publicKey.getPublicExponent();

    RSAKey rsaKey = new RSAKey();
    rsaKey.setMod(PicketBoxJSONUtil.b64Encode(modulus.toByteArray()));
    rsaKey.setExp(PicketBoxJSONUtil.b64Encode(exponent.toByteArray()));
    return rsaKey;
}

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From source file:org.cloudfoundry.identity.uaa.oauth.TokenKeyEndpoint.java

public static VerificationKeyResponse getVerificationKeyResponse(KeyInfo key) {
    Map<String, Object> result = new HashMap<>();
    result.put("alg", key.getSigner().algorithm());
    result.put("value", key.getVerifierKey());
    //new values per OpenID and JWK spec
    result.put("use", sig.name());
    result.put("kid", key.getKeyId());
    result.put("kty", key.getType());

    if (key.isAssymetricKey() && "RSA".equals(key.getType())) {

        RSAPublicKey rsaKey = key.getRsaPublicKey();
        if (rsaKey != null) {
            String n = Base64Utils.encodeToUrlSafeString(rsaKey.getModulus().toByteArray());
            String e = Base64Utils.encodeToUrlSafeString(rsaKey.getPublicExponent().toByteArray());
            result.put("n", n);
            result.put("e", e);
        }//from   w  w  w .  jav  a2 s .  c om
    }
    return new VerificationKeyResponse(result);
}

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From source file:org.apache.whirr.util.KeyPair.java

private static byte[] encodePublicKey(RSAPublicKey key) throws IOException {
    ByteArrayOutputStream keyBlob = new ByteArrayOutputStream();
    write("ssh-rsa".getBytes(), keyBlob);
    write(key.getPublicExponent().toByteArray(), keyBlob);
    write(key.getModulus().toByteArray(), keyBlob);

    ByteArrayOutputStream out = new ByteArrayOutputStream();
    out.write("ssh-rsa ".getBytes());
    out.write(Base64.encodeBase64(keyBlob.toByteArray()));

    return out.toByteArray();
}

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From source file:VerifyDescriptors.java

private static boolean verifySignature(String digest, String signature, String signingKey) throws Exception {
    byte[] signatureBytes = Base64.decodeBase64(signature.substring(0 + "-----BEGIN SIGNATURE-----\n".length(),
            signature.length() - "-----END SIGNATURE-----\n".length()).replaceAll("\n", ""));
    RSAPublicKey rsaSigningKey = (RSAPublicKey) new PEMReader(new StringReader(signingKey)).readObject();
    RSAKeyParameters rsakp = new RSAKeyParameters(false, rsaSigningKey.getModulus(),
            rsaSigningKey.getPublicExponent());
    PKCS1Encoding pe = new PKCS1Encoding(new RSAEngine());
    pe.init(false, rsakp);/*from w w  w  .j  a  v a  2s  . c  o m*/
    byte[] decryptedSignatureDigest = pe.processBlock(signatureBytes, 0, signatureBytes.length);
    String decryptedSignatureDigestString = Hex.encodeHexString(decryptedSignatureDigest);
    return decryptedSignatureDigestString.equalsIgnoreCase(digest);
}

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From source file:tor.TorCrypto.java

public static byte[] publicKeyToASN1(RSAPublicKey pk) throws IOException {
    byte[] modulus = pk.getModulus().toByteArray();
    byte[] pubexp = pk.getPublicExponent().toByteArray();

    ByteBuffer inner = ByteBuffer.allocate(1024);
    inner.put((byte) 2); // Integer
    inner.put((byte) 0x81); // one byte size
    inner.put((byte) modulus.length); // one byte size
    inner.put(modulus);/*from  w w  w  .  j a v  a 2 s .  c  om*/

    inner.put((byte) 2); // Integer
    //inner.put((byte)0x81); // one byte size
    inner.put((byte) pubexp.length); // one byte size
    inner.put(pubexp);
    inner.flip();

    ByteBuffer outer = ByteBuffer.allocate(1024);
    outer.put((byte) 0x30); // SEQUENCE
    outer.put((byte) 0x81); // one byte size
    outer.put((byte) inner.limit()); // one byte size
    outer.put(inner);
    outer.flip();

    byte asn[] = new byte[outer.limit()];
    outer.get(asn);
    return asn;
}

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