Java 类org.bouncycastle.crypto.generators.MGF1BytesGenerator 实例源码

项目：gwt-crypto 文件：MGF1GeneratorTest.java

public void performTest()
{
    checkMask(1, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed1, mask1);
    checkMask(2, new MGF1BytesGenerator(new SHA1Digest()), seed2, mask2);
    checkMask(3, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed3, mask3);

    try
    {
        new MGF1BytesGenerator(new SHA1Digest()).generateBytes(new byte[10], 0, 20);

        fail("short input array not caught");
    }
    catch (DataLengthException e)
    {
        // expected 
    }
}

项目：irma_future_id 文件：MGF1GeneratorTest.java

public void performTest()
{
    checkMask(1, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed1, mask1);
    checkMask(2, new MGF1BytesGenerator(new SHA1Digest()), seed2, mask2);
    checkMask(3, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed3, mask3);

    try
    {
        new MGF1BytesGenerator(new SHA1Digest()).generateBytes(new byte[10], 0, 20);

        fail("short input array not caught");
    }
    catch (DataLengthException e)
    {
        // expected 
    }
}

项目：bc-java 文件：MGF1GeneratorTest.java

public void performTest()
{
    checkMask(1, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed1, mask1);
    checkMask(2, new MGF1BytesGenerator(new SHA1Digest()), seed2, mask2);
    checkMask(3, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed3, mask3);

    try
    {
        new MGF1BytesGenerator(new SHA1Digest()).generateBytes(new byte[10], 0, 20);

        fail("short input array not caught");
    }
    catch (DataLengthException e)
    {
        // expected 
    }
}

项目：ipack 文件：FixedLengthMGF1Padder.java

public byte[] getUnpaddedData(byte[] paddedData)
{
    byte[] seed = new byte[dig.getDigestSize()];
    byte[] mask = new byte[length - dig.getDigestSize()];

    System.arraycopy(paddedData, 0, seed, 0, seed.length);

    MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);

    maskGen.init(new MGFParameters(seed));

    maskGen.generateBytes(mask, 0, mask.length);

    for (int i = 0; i != mask.length; i++)
    {
        paddedData[i + seed.length] ^= mask[i];
    }

    int end = 0;

    for (int i = paddedData.length - 1; i != seed.length; i--)
    {
        if (paddedData[i] == 0)
        {
            end = i;
            break;
        }
    }

    if (end == 0)
    {
        throw new IllegalStateException("bad padding in encoding");
    }

    byte[] data = new byte[end - seed.length];

    System.arraycopy(paddedData, seed.length, data, 0, data.length);

    return data;
}

项目：gwt-crypto 文件：FixedLengthMGF1Padder.java

public byte[] getPaddedData(byte[] data)
{
    byte[] bytes = new byte[length];
    byte[] seed = new byte[dig.getDigestSize()];
    byte[] mask = new byte[length - dig.getDigestSize()];

    if (random == null)
    {
        random = new SecureRandom();
    }

    random.nextBytes(seed);

    MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);

    maskGen.init(new MGFParameters(seed));

    maskGen.generateBytes(mask, 0, mask.length);

    System.arraycopy(seed, 0, bytes, 0, seed.length);
    System.arraycopy(data, 0, bytes, seed.length, data.length);

    for (int i = seed.length + data.length + 1; i != bytes.length; i++)
    {
        bytes[i] = (byte)(1 | (random.nextInt() & 0xff));
    }

    for (int i = 0; i != mask.length; i++)
    {
        bytes[i + seed.length] ^= mask[i];
    }

    return bytes;
}

项目：gwt-crypto 文件：FixedLengthMGF1Padder.java

public byte[] getUnpaddedData(byte[] paddedData)
{
    byte[] seed = new byte[dig.getDigestSize()];
    byte[] mask = new byte[length - dig.getDigestSize()];

    System.arraycopy(paddedData, 0, seed, 0, seed.length);

    MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);

    maskGen.init(new MGFParameters(seed));

    maskGen.generateBytes(mask, 0, mask.length);

    for (int i = 0; i != mask.length; i++)
    {
        paddedData[i + seed.length] ^= mask[i];
    }

    int end = 0;

    for (int i = paddedData.length - 1; i != seed.length; i--)
    {
        if (paddedData[i] == 0)
        {
            end = i;
            break;
        }
    }

    if (end == 0)
    {
        throw new IllegalStateException("bad padding in encoding");
    }

    byte[] data = new byte[end - seed.length];

    System.arraycopy(paddedData, seed.length, data, 0, data.length);

    return data;
}

项目：gwt-crypto 文件：BcFixedLengthMGF1Padder.java

public byte[] getPaddedData(byte[] data)
{
    byte[] bytes = new byte[length];
    byte[] seed = new byte[dig.getDigestSize()];
    byte[] mask = new byte[length - dig.getDigestSize()];

    if (random == null)
    {
        random = new SecureRandom();
    }

    random.nextBytes(seed);

    MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);

    maskGen.init(new MGFParameters(seed));

    maskGen.generateBytes(mask, 0, mask.length);

    System.arraycopy(seed, 0, bytes, 0, seed.length);
    System.arraycopy(data, 0, bytes, seed.length, data.length);

    for (int i = seed.length + data.length + 1; i != bytes.length; i++)
    {
        bytes[i] = (byte)(1 + random.nextInt(255));
    }

    for (int i = 0; i != mask.length; i++)
    {
        bytes[i + seed.length] ^= mask[i];
    }

    return bytes;
}

项目：gwt-crypto 文件：BcFixedLengthMGF1Padder.java

public byte[] getUnpaddedData(byte[] paddedData)
{
    byte[] seed = new byte[dig.getDigestSize()];
    byte[] mask = new byte[length - dig.getDigestSize()];

    System.arraycopy(paddedData, 0, seed, 0, seed.length);

    MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);

    maskGen.init(new MGFParameters(seed));

    maskGen.generateBytes(mask, 0, mask.length);

    for (int i = 0; i != mask.length; i++)
    {
        paddedData[i + seed.length] ^= mask[i];
    }

    int end = 0;

    for (int i = paddedData.length - 1; i != seed.length; i--)
    {
        if (paddedData[i] == 0)
        {
            end = i;
            break;
        }
    }

    if (end == 0)
    {
        throw new IllegalStateException("bad padding in encoding");
    }

    byte[] data = new byte[end - seed.length];

    System.arraycopy(paddedData, seed.length, data, 0, data.length);

    return data;
}

项目：Aki-SSL 文件：BcFixedLengthMGF1Padder.java

public byte[] getPaddedData(byte[] data)
{
    byte[] bytes = new byte[length];
    byte[] seed = new byte[dig.getDigestSize()];
    byte[] mask = new byte[length - dig.getDigestSize()];

    if (random == null)
    {
        random = new SecureRandom();
    }

    random.nextBytes(seed);

    MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);

    maskGen.init(new MGFParameters(seed));

    maskGen.generateBytes(mask, 0, mask.length);

    System.arraycopy(seed, 0, bytes, 0, seed.length);
    System.arraycopy(data, 0, bytes, seed.length, data.length);

    for (int i = seed.length + data.length + 1; i != bytes.length; i++)
    {
        bytes[i] = (byte)(1 + random.nextInt(255));
    }

    for (int i = 0; i != mask.length; i++)
    {
        bytes[i + seed.length] ^= mask[i];
    }

    return bytes;
}

项目：Aki-SSL 文件：BcFixedLengthMGF1Padder.java

public byte[] getUnpaddedData(byte[] paddedData)
{
    byte[] seed = new byte[dig.getDigestSize()];
    byte[] mask = new byte[length - dig.getDigestSize()];

    System.arraycopy(paddedData, 0, seed, 0, seed.length);

    MGF1BytesGenerator maskGen = new MGF1BytesGenerator(dig);

    maskGen.init(new MGFParameters(seed));

    maskGen.generateBytes(mask, 0, mask.length);

    for (int i = 0; i != mask.length; i++)
    {
        paddedData[i + seed.length] ^= mask[i];
    }

    int end = 0;

    for (int i = paddedData.length - 1; i != seed.length; i--)
    {
        if (paddedData[i] == 0)
        {
            end = i;
            break;
        }
    }

    if (end == 0)
    {
        throw new IllegalStateException("bad padding in encoding");
    }

    byte[] data = new byte[end - seed.length];

    System.arraycopy(paddedData, seed.length, data, 0, data.length);

    return data;
}