content: package local.org.bouncycastle.asn1.x9;
  
  import java.math.BigInteger;
  
  import local.org.bouncycastle.math.ec.ECCurve;
  import local.org.bouncycastle.math.ec.ECFieldElement;
  
  
  public class X9IntegerConverter
  {
      public int getByteLength(
          ECCurve c)
      {
          return (c.getFieldSize() + 7) / 8;
      }
  
      public int getByteLength(
          ECFieldElement fe)
      {
          return (fe.getFieldSize() + 7) / 8;
      }
  
      public byte[] integerToBytes(
          BigInteger s,
          int        qLength)
      {
          byte[] bytes = s.toByteArray();
          
          if (qLength < bytes.length)
          {
              byte[] tmp = new byte[qLength];
          
              System.arraycopy(bytes, bytes.length - tmp.length, tmp, 0, tmp.length);
              
              return tmp;
          }
          else if (qLength > bytes.length)
          {
              byte[] tmp = new byte[qLength];
          
              System.arraycopy(bytes, 0, tmp, tmp.length - bytes.length, bytes.length);
              
              return tmp; 
          }
      
          return bytes;
      }
  }
  