io.airlift.security.der

Class DerUtils

java.lang.Object

io.airlift.security.der.DerUtils

public final class DerUtils
extends Object

ASN.1 DER encoder methods necessary to process PEM files and to write a certificate signing request. NOTE: this API is only present for the two mentioned use cases, and is subject to change without warning.

Method Summary

Modifier and Type	Method and Description
static List<byte[]>	decodeSequence(byte[] sequence) Decodes a sequence of encoded values.
static byte[]	decodeSequenceOptionalElement(byte[] element) Decodes a optional element of a sequence.
static byte[]	encodeBitString(int padBits, byte[] value) Encodes a bit string padded with the specified number of bits.
static byte[]	encodeLength(int length) Encodes the length of a DER value.
static byte[]	encodeOctetString(byte[] value) Encodes an octet string.
static byte[]	encodeOid(String oid)
static byte[]	encodeSequence(byte[]... encodedValues) Encodes a sequence of encoded values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

encodeSequence

public static byte[] encodeSequence(byte[]... encodedValues)

Encodes a sequence of encoded values.

decodeSequence

public static List<byte[]> decodeSequence(byte[] sequence)

Decodes a sequence of encoded values.

decodeSequenceOptionalElement

public static byte[] decodeSequenceOptionalElement(byte[] element)

Decodes a optional element of a sequence.

encodeBitString

public static byte[] encodeBitString(int padBits,
                                     byte[] value)

Encodes a bit string padded with the specified number of bits. The encoding is a byte containing the padBits followed by the value bytes.

encodeOctetString

public static byte[] encodeOctetString(byte[] value)

Encodes an octet string.

encodeLength

public static byte[] encodeLength(int length)

Encodes the length of a DER value. The encoding of a 7bit value is simply the value. Values needing more than 7bits are encoded as a lead byte with the high bit set and containing the number of value bytes. Then the following bytes encode the length using the least number of bytes possible.

encodeOid

public static byte[] encodeOid(String oid)