jodd-core/src/main/java/jodd/util/CharUtil.java
public static byte[] toRawByteArray(final char[] carr) {
		byte[] barr = new byte[carr.length << 1];
		for (int i = 0, bpos = 0; i < carr.length; i++) {
			char c = carr[i];
			barr[bpos++] = (byte) ((c & 0xFF00) >> 8);
			barr[bpos++] = (byte) (c & 0x00FF);
		}
		return barr;
	}
public static byte[] toRawByteArray(final char[] carr) {
		byte[] barr = new byte[carr.length << 1];
		for (int i = 0, bpos = 0; i < carr.length; i++) {
			char c = carr[i];
			barr[bpos++] = (byte) ((c & 0xFF00) >> 8);
			barr[bpos++] = (byte) (c & 0x00FF);
		}
		return barr;
	}
Converts char array into byte array by replacing each character with two bytes.