EncryptionCommon.java

package binky.dan.utils.encryption;

public abstract class EncryptionCommon {
	/**
	 * @param bytes
	 * @return
	 */
	public final String bytesToHex(byte[] bytes) {
		StringBuffer sb = new StringBuffer(bytes.length * 2);
		for (int i = 0; i < bytes.length; i++) {
			int v = bytes[i] & 0xff;
			if (v < 16) {
				sb.append('0');
			}
			sb.append(Integer.toHexString(v));
		}
		return sb.toString().toUpperCase();

	}

	/**
	 * @param hex
	 * @return
	 */
	public final byte[] hexToBytes(String hex) {
		byte[] b = new byte[hex.length() / 2];
		for (int i = 0; i < b.length; i++) {
			int index = i * 2;
			int v = Integer.parseInt(hex.substring(index, index + 2), 16);
			b[i] = (byte) v;
		}
		return b;

	}
}