Example usage for org.bouncycastle.util.encoders Encoder encode

Introduction

In this page you can find the example usage for org.bouncycastle.util.encoders Encoder encode.

Prototype

int encode(byte[] data, int off, int length, OutputStream out) throws IOException;

Source Link

Usage

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;/*from  w ww .ja va2 s  .  com*/
    Encoder encoder = null;
    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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