org.apache.sshd.common.config.keys.loader.ssh2

Class Ssh2PublicKeyEntryDecoder

java.lang.Object

org.apache.sshd.common.config.keys.loader.ssh2.Ssh2PublicKeyEntryDecoder

All Implemented Interfaces:

KeyTypeNamesSupport, PublicKeyEntryResolver, PublicKeyRawDataDecoder<PublicKey>, PublicKeyRawDataReader<PublicKey>

public class Ssh2PublicKeyEntryDecoder
extends Object
implements PublicKeyRawDataDecoder<PublicKey>, PublicKeyEntryResolver, PublicKeyRawDataReader<PublicKey>, KeyTypeNamesSupport

Decodes a public key file encoded according to The Secure Shell (SSH) Public Key File Format

Author:

Apache MINA SSHD Project

Field Summary

Fields

Modifier and Type	Field and Description
static String	BEGIN_MARKER
static String	END_MARKER
static char	HEADER_CONTINUATION_INDICATOR According to RFC-4716 section 3.3: A line is continued if the last character in the line is a "\".
static Ssh2PublicKeyEntryDecoder	INSTANCE
static List<String>	START_MARKERS
static List<String>	STOP_MARKERS
static NavigableSet<String>	SUPPORTED_KEY_TYPES

Fields inherited from interface org.apache.sshd.common.config.keys.PublicKeyEntryResolver

FAILING, IGNORING

Constructor Summary

Constructors

Constructor and Description
Ssh2PublicKeyEntryDecoder()

Method Summary

Modifier and Type	Method and Description
PublicKey	decodePublicKey(SessionContext session, String keyType, InputStream keyData, Map<String,String> headers)
PublicKey	decodePublicKeyByType(SessionContext session, String keyType, InputStream keyData, Map<String,String> headers)
NavigableSet<String>	getSupportedKeyTypes()
PublicKey	readPublicKey(SessionContext session, NamedResource resourceKey, List<String> lines)
PublicKey	readPublicKey(SessionContext session, NamedResource resourceKey, String beginMarker, String endMarker, byte[] dataBytes, Map<String,String> headers)
PublicKey	readPublicKey(SessionContext session, NamedResource resourceKey, String beginMarker, String endMarker, List<String> lines, Map<String,String> headers)
PublicKey	resolve(SessionContext session, String keyType, byte[] keyData, Map<String,String> headers)
protected Map.Entry<Map<String,String>,List<String>>	separateDataLinesFromHeaders(SessionContext session, NamedResource resourceKey, String startLine, String endLine, List<String> lines)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.sshd.common.config.keys.PublicKeyRawDataDecoder

decodePublicKey, decodePublicKey

Methods inherited from interface org.apache.sshd.common.config.keys.PublicKeyRawDataReader

readPublicKey, readPublicKey, readPublicKey, readPublicKey, readPublicKey, readPublicKey, readPublicKey, readPublicKey, readPublicKey, readPublicKey

Methods inherited from interface org.apache.sshd.common.config.keys.KeyTypeNamesSupport

findSupporterByKeyTypeName

Field Detail

SUPPORTED_KEY_TYPES

public static final NavigableSet<String> SUPPORTED_KEY_TYPES

BEGIN_MARKER

public static final String BEGIN_MARKER

See Also:

Constant Field Values

START_MARKERS

public static final List<String> START_MARKERS

END_MARKER

public static final String END_MARKER

See Also:

Constant Field Values

STOP_MARKERS

public static final List<String> STOP_MARKERS

HEADER_CONTINUATION_INDICATOR

public static final char HEADER_CONTINUATION_INDICATOR

According to RFC-4716 section 3.3:

A line is continued if the last character in the line is a "\". If the last character of a line is a "\", then the logical contents of the line are formed by removing the "\" and the line termination characters, and appending the contents of the next line.

See Also:

Constant Field Values

INSTANCE

public static final Ssh2PublicKeyEntryDecoder INSTANCE

Constructor Detail

Ssh2PublicKeyEntryDecoder

public Ssh2PublicKeyEntryDecoder()

Method Detail

getSupportedKeyTypes

public NavigableSet<String> getSupportedKeyTypes()

Specified by:

getSupportedKeyTypes in interface KeyTypeNamesSupport

Returns:

The case insensitive NavigableSet of OpenSSH key type names that are supported by this decoder - e.g., ssh-rsa, ssh-dss, ecdsa-sha2-nistp384. This is not a single name - e.g., ECDSA keys have several curve names. Caveat: this collection may be un-modifiable...

resolve

public PublicKey resolve(SessionContext session,
                         String keyType,
                         byte[] keyData,
                         Map<String,String> headers)
                  throws IOException,
                         GeneralSecurityException

Specified by:

resolve in interface PublicKeyEntryResolver

Parameters:

session - The SessionContext for invoking this load command - may be null if not invoked within a session context (e.g., offline tool or session unknown).

keyType - The OpenSSH reported key type

keyData - The OpenSSH encoded key data

headers - Any headers that may have been available when data was read

Returns:

The extracted PublicKey - ignored if null

Throws:

IOException - If failed to parse the key data

GeneralSecurityException - If failed to generate the key

decodePublicKey

public PublicKey decodePublicKey(SessionContext session,
                                 String keyType,
                                 InputStream keyData,
                                 Map<String,String> headers)
                          throws IOException,
                                 GeneralSecurityException

Specified by:

decodePublicKey in interface PublicKeyRawDataDecoder<PublicKey>

Parameters:

session - The SessionContext for invoking this command - may be null if not invoked within a session context (e.g., offline tool or session unknown).

keyType - The reported / encode key type

keyData - The key data bytes stream positioned after the key type decoding and making sure it is one of the supported types

headers - Any headers that may have been available when data was read

Returns:

The decoded PublicKey

Throws:

IOException - If failed to read from the data stream

GeneralSecurityException - If failed to generate the key

decodePublicKeyByType

public PublicKey decodePublicKeyByType(SessionContext session,
                                       String keyType,
                                       InputStream keyData,
                                       Map<String,String> headers)
                                throws IOException,
                                       GeneralSecurityException

Specified by:

decodePublicKeyByType in interface PublicKeyRawDataDecoder<PublicKey>

Throws:

IOException

GeneralSecurityException

readPublicKey

public PublicKey readPublicKey(SessionContext session,
                               NamedResource resourceKey,
                               List<String> lines)
                        throws IOException,
                               GeneralSecurityException

Specified by:

readPublicKey in interface PublicKeyRawDataReader<PublicKey>

Throws:

IOException

GeneralSecurityException

readPublicKey

public PublicKey readPublicKey(SessionContext session,
                               NamedResource resourceKey,
                               String beginMarker,
                               String endMarker,
                               List<String> lines,
                               Map<String,String> headers)
                        throws IOException,
                               GeneralSecurityException

Throws:

IOException

GeneralSecurityException

readPublicKey

public PublicKey readPublicKey(SessionContext session,
                               NamedResource resourceKey,
                               String beginMarker,
                               String endMarker,
                               byte[] dataBytes,
                               Map<String,String> headers)
                        throws IOException,
                               GeneralSecurityException

Throws:

IOException

GeneralSecurityException

separateDataLinesFromHeaders

protected Map.Entry<Map<String,String>,List<String>> separateDataLinesFromHeaders(SessionContext session,
                                                                                  NamedResource resourceKey,
                                                                                  String startLine,
                                                                                  String endLine,
                                                                                  List<String> lines)
                                                                           throws IOException,
                                                                                  GeneralSecurityException

Throws:

IOException

GeneralSecurityException