Example usage for org.bouncycastle.crypto Digest update

Introduction

In this page you can find the example usage for org.bouncycastle.crypto Digest update.

Prototype

public void update(byte in);

Source Link

Document

update the message digest with a single byte.

Usage

From source file:com.github.capone.protocol.crypto.SymmetricKey.java

License:Open Source License

protected static SymmetricKey fromScalarMultiplication(PrivateKey sk, PublicKey pk, boolean localKeyFirst)
        throws InvalidKeyException {
    byte[] scalarmult = new byte[SodiumConstants.SCALAR_BYTES];
    Sodium.crypto_scalarmult_curve25519(scalarmult, sk.toBytes(), pk.toBytes());

    Digest digest = new Digest();
    digest.update(scalarmult);
    if (localKeyFirst) {
        digest.update(sk.getPublicKey().toBytes());
        digest.update(pk.toBytes());/*  ww w . j av  a2s. c  o m*/
    } else {
        digest.update(pk.toBytes());
        digest.update(sk.getPublicKey().toBytes());
    }

    return SymmetricKey.fromBytes(digest.digest());
}

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From source file:com.github.horrorho.inflatabledonkey.crypto.rfc6637.RFC6637KDF.java

License:Open Source License

public byte[] apply(ECPoint S, byte[] fingerprint) throws IOException {
    // RFC Sections 7, 8
    byte[] ZB = S.getAffineXCoord().getEncoded();

    Digest digest = digestFactory.get();

    digest.update((byte) 0x00); // 00
    digest.update((byte) 0x00); // 00
    digest.update((byte) 0x00); // 00 
    digest.update((byte) 0x01); // 01 
    digest.update(ZB, 0, ZB.length); // ZB

    // Params//from   w  ww .  j a  va 2  s  . c o  m
    digest.update(formattedOid, 0, formattedOid.length); // curve_OID_len || curve_OID 
    digest.update(publicKeyAlgID); // public_key_alg_ID
    digest.update((byte) 0x03); // 03
    digest.update((byte) 0x01); // 01
    digest.update(kdfHashID); // KDF_hash_ID
    digest.update(symAlgID); // KEK_alg_ID for AESKeyWrap
    digest.update(ANONYMOUS_SENDER, 0, ANONYMOUS_SENDER.length); // "Anonymous Sender    "
    digest.update(fingerprint, 0, fingerprint.length); // recipient_fingerprint

    byte[] hash = new byte[digest.getDigestSize()];
    digest.doFinal(hash, 0);
    return hash;
}

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From source file:com.nokia.xfolite.xforms.xpath.XFormsCoreFunctionLibrary.java

License:Open Source License

public static String digest_function(String s, String method, String encoding) {
    //#debug info
    System.out.println("Digest function invoked with params(" + s + "," + method + "," + encoding + ")");
    Digest digest = null;
    Encoder encoder = null;//from  ww w.  j  ava  2s .c  o  m
    if (encoding.equals("base64")) {
        encoder = new Base64Encoder();
    } else if (encoding.equals("hex")) {
        encoder = new HexEncoder();
    }
    if (method.equals("SHA-1")) {
        digest = new SHA1Digest();
    } else if (method.equals("SHA-256")) {
        digest = new SHA256Digest();
    } else if (method.equals("SHA-512")) {
        digest = new SHA512Digest();
    } else if (method.equals("MD5")) {
        digest = new MD5Digest();
    }

    if (encoder == null) {
        throw new XPathException(XPathException.TYPE_ERR,
                "XForms function digest() only supports hex and base64 encoding.");
    }
    if (digest == null) {
        throw new XPathException(XPathException.TYPE_ERR,
                "XForms function digest() only supports MD5, SHA-1, SHA-256 and SHA-512 digests.");
    }

    int len = s.length();
    for (int i = 0; i < len; i++) {
        digest.update((byte) s.charAt(i)); // FIXME: Better not use non-ASCII characters!
    }

    byte[] data = new byte[digest.getDigestSize()];
    digest.doFinal(data, 0);

    ByteArrayOutputStream bOut = new ByteArrayOutputStream();
    try {
        encoder.encode(data, 0, data.length, bOut);
    } catch (IOException e) {
        throw new XPathException(XPathException.TYPE_ERR, "Exception when encoding digest: " + e);
    }

    byte[] out = bOut.toByteArray();
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < out.length; i++) {
        sb.append((char) out[i]); // This works fine, neither hex nor base64 encodings produce 
    }
    return sb.toString();
}

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From source file:org.ourfilesystem.security.SecurityTools.java

License:Open Source License

public static void digestBoolean(Digest d, boolean b) {
    if (b) {/*from w w w  .  j av  a2 s.  co m*/
        d.update((byte) 1);
    } else {
        d.update((byte) 0);
    }
}

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From source file:org.ourfilesystem.security.SecurityTools.java

License:Open Source License

public static void digestDate(Digest d, Date dt) {
    if (dt == null) {
        d.update((byte) 2);
    } else {/*  ww w .  j ava  2 s  . co m*/
        d.update((byte) 1);
        digestLong(d, dt.getTime());
    }
}

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From source file:org.ourfilesystem.security.SecurityTools.java

License:Open Source License

public static void digestPostTemplate(Digest d, PostTemplate p) {
    if (p == null) {
        d.update((byte) 2);
    } else {//  ww  w . j  a va  2 s .c  o m
        for (int c = 0; c < 10; c++) {
            String s = p.getBool(c);
            digestString(d, s);
        }
        for (int c = 0; c < 10; c++) {
            String s = p.getDouble(c);
            digestString(d, s);
        }
        for (int c = 0; c < 10; c++) {
            String s = p.getNum(c);
            digestString(d, s);
        }
        for (int c = 0; c < 3; c++) {
            String s = p.getRef(c);
            digestString(d, s);
        }
        for (int c = 0; c < 8; c++) {
            String s = p.getString(c);
            digestString(d, s);
        }
        digestString(d, p.getTemplateName());
        digestString(d, p.getTemplateDescription());
    }
}

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From source file:org.ourfilesystem.security.SecurityTools.java

License:Open Source License

public static void digestPostMessage(Digest d, PostMessage m) {
    if (m == null) {
        d.update((byte) 2);
    } else {//from   w  w w .ja v  a2 s . c  o  m
        d.update((byte) 1);
        digestString(d, m.getComment());
        digestString(d, m.getString0());
        digestString(d, m.getString1());
        digestString(d, m.getString2());
        digestString(d, m.getString3());
        digestString(d, m.getString4());
        digestString(d, m.getString5());
        digestString(d, m.getString6());
        digestString(d, m.getString7());
        digestString(d, m.getFileName());
        digestString(d, m.getSubject());
        digestDouble(d, m.getDouble0());
        digestDouble(d, m.getDouble1());
        digestDouble(d, m.getDouble2());
        digestDouble(d, m.getDouble3());
        digestDouble(d, m.getDouble4());
        digestDouble(d, m.getDouble5());
        digestDouble(d, m.getDouble6());
        digestDouble(d, m.getDouble7());
        digestDouble(d, m.getDouble8());
        digestDouble(d, m.getDouble9());
        digestLong(d, m.getNum0());
        digestLong(d, m.getNum1());
        digestLong(d, m.getNum2());
        digestLong(d, m.getNum3());
        digestLong(d, m.getNum4());
        digestLong(d, m.getNum5());
        digestLong(d, m.getNum6());
        digestLong(d, m.getNum7());
        digestLong(d, m.getNum8());
        digestLong(d, m.getNum9());
        digestBBytes(d, m.getRef0());
        digestBBytes(d, m.getRef1());
        digestBBytes(d, m.getRef2());
        digestBBytes(d, m.getUseTemplate());
        digestBoolean(d, m.isBool0());
        digestBoolean(d, m.isBool1());
        digestBoolean(d, m.isBool2());
        digestBoolean(d, m.isBool3());
        digestBoolean(d, m.isBool4());
        digestBoolean(d, m.isBool5());
        digestBoolean(d, m.isBool6());
        digestBoolean(d, m.isBool7());
        digestBoolean(d, m.isBool8());
        digestBoolean(d, m.isBool9());
    }
}

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