src/main/java/org/apache/jcp/xml/dsig/internal/dom/DOMKeyValue.java [453:496]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        private static ECPoint decodePoint(byte[] data, EllipticCurve curve)
                throws IOException {
            if (data.length == 0 || data[0] != 4) {
                throw new IOException("Only uncompressed point format " +
                                      "supported");
            }
            // Per ANSI X9.62, an encoded point is a 1 byte type followed by
            // ceiling(LOG base 2 field-size / 8) bytes of x and the same of y.
            int n = (data.length - 1) / 2;
            if (n != (curve.getField().getFieldSize() + 7) >> 3) {
                throw new IOException("Point does not match field size");
            }

            byte[] xb = Arrays.copyOfRange(data, 1, 1 + n);
            byte[] yb = Arrays.copyOfRange(data, n + 1, n + 1 + n);

            return new ECPoint(new BigInteger(1, xb), new BigInteger(1, yb));
        }

        private static byte[] encodePoint(ECPoint point, EllipticCurve curve) {
            // get field size in bytes (rounding up)
            int n = (curve.getField().getFieldSize() + 7) >> 3;
            byte[] xb = trimZeroes(point.getAffineX().toByteArray());
            byte[] yb = trimZeroes(point.getAffineY().toByteArray());
            if (xb.length > n || yb.length > n) {
                throw new RuntimeException("Point coordinates do not " +
                                           "match field size");
            }
            byte[] b = new byte[1 + (n << 1)];
            b[0] = 4; // uncompressed
            System.arraycopy(xb, 0, b, n - xb.length + 1, xb.length);
            System.arraycopy(yb, 0, b, b.length - yb.length, yb.length);
            return b;
        }

        private static byte[] trimZeroes(byte[] b) {
            int i = 0;
            while (i < b.length - 1 && b[i] == 0) {
                i++;
            }
            if (i == 0) {
                return b;
            }
            return Arrays.copyOfRange(b, i, b.length);
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -



src/main/java/org/apache/xml/security/keys/content/keyvalues/ECKeyValue.java [323:366]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    private static ECPoint decodePoint(byte[] data, EllipticCurve curve)
        throws IOException {
        if (data.length == 0 || data[0] != 4) {
            throw new IOException("Only uncompressed point format " +
                "supported");
        }
        // Per ANSI X9.62, an encoded point is a 1 byte type followed by
        // ceiling(LOG base 2 field-size / 8) bytes of x and the same of y.
        int n = (data.length - 1) / 2;
        if (n != (curve.getField().getFieldSize() + 7) >> 3) {
            throw new IOException("Point does not match field size");
        }

        byte[] xb = Arrays.copyOfRange(data, 1, 1 + n);
        byte[] yb = Arrays.copyOfRange(data, n + 1, n + 1 + n);

        return new ECPoint(new BigInteger(1, xb), new BigInteger(1, yb));
    }

    private static byte[] encodePoint(ECPoint point, EllipticCurve curve) {
        // get field size in bytes (rounding up)
        int n = (curve.getField().getFieldSize() + 7) >> 3;
        byte[] xb = trimZeroes(point.getAffineX().toByteArray());
        byte[] yb = trimZeroes(point.getAffineY().toByteArray());
        if (xb.length > n || yb.length > n) {
            throw new RuntimeException("Point coordinates do not " +
                                       "match field size");
        }
        byte[] b = new byte[1 + (n << 1)];
        b[0] = 4; // uncompressed
        System.arraycopy(xb, 0, b, n - xb.length + 1, xb.length);
        System.arraycopy(yb, 0, b, b.length - yb.length, yb.length);
        return b;
    }

    private static byte[] trimZeroes(byte[] b) {
        int i = 0;
        while (i < b.length - 1 && b[i] == 0) {
            i++;
        }
        if (i == 0) {
            return b;
        }
        return Arrays.copyOfRange(b, i, b.length);
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -