Class Asn1Writer

java.lang.Object
org.apache.tomcat.util.buf.Asn1Writer
public class Asn1Writer extends Object
Utility class for writing ASN.1 DER-encoded data structures.

  • Method Details

    • writeSequence

      public static byte[] writeSequence(byte[]... components)
      Writes an ASN.1 SEQUENCE containing the given components.
      Parameters:
      components - the component byte arrays to include in the sequence
      Returns:
      the DER-encoded SEQUENCE bytes

    • writeInteger

      public static byte[] writeInteger(int value)
      Writes an ASN.1 INTEGER value.
      Parameters:
      value - the integer value to encode
      Returns:
      the DER-encoded INTEGER bytes

    • writeOctetString

      public static byte[] writeOctetString(byte[] data)
      Writes an ASN.1 OCTET STRING value.
      Parameters:
      data - the octet string bytes to encode
      Returns:
      the DER-encoded OCTET STRING bytes

    • writeTag

      public static byte[] writeTag(byte tagId, byte[] data)
      Writes an ASN.1 tag with the given data.
      Parameters:
      tagId - the ASN.1 tag identifier byte
      data - the data bytes to encode
      Returns:
      the DER-encoded tag and data bytes