Example usage for org.bouncycastle.crypto Signer update

Introduction

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

Prototype

public void update(byte b);

Source Link

Document

update the internal digest with the byte b

Usage

From source file:org.candlepin.util.DERUtil.java

License:Open Source License

/**
 * Write an integer as a DER encoded definite length.
 *
 * @param out//from w  w w .j av  a  2  s  .c o m
 * @param length
 * @throws IOException if something goes wrong
 */
public static void writeLength(OutputStream out, int length, Signer signer) throws IOException {
    if (length > 127) {
        int size = 1;
        int val = length;

        while ((val >>>= 8) != 0) {
            size++;
        }

        byte b = (byte) (size | 0x80);
        out.write(b);
        if (signer != null) {
            signer.update(b);
        }

        for (int i = (size - 1) * 8; i >= 0; i -= 8) {
            b = (byte) (length >> i);
            out.write(b);
            if (signer != null) {
                signer.update(b);
            }
        }
    } else {
        byte b = (byte) length;
        out.write(b);
        if (signer != null) {
            signer.update(b);
        }
    }
}

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From source file:org.candlepin.util.DERUtil.java

License:Open Source License

public static void writeTag(OutputStream out, int tag, int tagNo, Signer signer) throws IOException {
    int rebuiltTag = rebuildTag(tag, tagNo);
    out.write(rebuiltTag);/*ww w.  java  2 s. co  m*/
    if (signer != null) {
        signer.update((byte) rebuiltTag);
    }
}

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