Package org.apache.sshd.common.config.keys.loader.pem

Class DSSPEMResourceKeyPairParser

java.lang.Object

org.apache.sshd.common.util.logging.AbstractLoggingBean

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

org.apache.sshd.common.config.keys.loader.pem.AbstractPEMResourceKeyPairParser

org.apache.sshd.common.config.keys.loader.pem.DSSPEMResourceKeyPairParser

All Implemented Interfaces:

AlgorithmNameProvider, KeyPairResourceLoader, KeyPairResourceParser, KeyPairPEMResourceParser

public class DSSPEMResourceKeyPairParser
extends AbstractPEMResourceKeyPairParser

Author:

Apache MINA SSHD Project

See Also:

• RFC-3279 section 2.3.2

Field Summary

Fields

Modifier and Type	Field	Description
static final String	BEGIN_MARKER
static final List<String>	BEGINNERS
static final String	DSS_OID
static final String	END_MARKER
static final List<String>	ENDERS
static final DSSPEMResourceKeyPairParser	INSTANCE

Fields inherited from class org.apache.sshd.common.util.logging.AbstractLoggingBean

log

Fields inherited from interface org.apache.sshd.common.config.keys.loader.KeyPairResourceLoader

MAX_CIPHER_NAME_LENGTH, MAX_KEY_COMMENT_LENGTH, MAX_KEY_TYPE_NAME_LENGTH, MAX_PRIVATE_KEY_DATA_SIZE, MAX_PUBLIC_KEY_DATA_SIZE

Fields inherited from interface org.apache.sshd.common.config.keys.loader.KeyPairResourceParser

EMPTY

Constructor Summary

Constructors

Constructor	Description
DSSPEMResourceKeyPairParser()

Method Summary

Modifier and Type	Method	Description
static KeyPair	decodeDSSKeyPair(KeyFactory kf, InputStream s, boolean okToClose)	The ASN.1 syntax for the private key:
Collection<KeyPair>	extractKeyPairs(SessionContext session, NamedResource resourceKey, String beginMarker, String endMarker, FilePasswordProvider passwordProvider, InputStream stream, Map<String,String> headers)

Methods inherited from class org.apache.sshd.common.config.keys.loader.pem.AbstractPEMResourceKeyPairParser

applyPrivateKeyCipher, extractKeyPairs, getAlgorithm, getAlgorithmIdentifier

Methods inherited from class org.apache.sshd.common.config.keys.loader.AbstractKeyPairResourceParser

canExtractKeyPairs, extractKeyPairs, getBeginners, getEnders, getEndingMarkers, loadKeyPairs, separateDataLinesFromHeaders

Methods inherited from class org.apache.sshd.common.util.logging.AbstractLoggingBean

debug, debug, debug, debug, debug, error, error, error, error, error, getSimplifiedLogger, info, info, warn, warn, warn, warn, warn, warn, warn, warn

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.loader.KeyPairResourceLoader

loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs, loadKeyPairs

Methods inherited from interface org.apache.sshd.common.config.keys.loader.KeyPairResourceParser

canExtractKeyPairs

Field Details

BEGIN_MARKER

public static final String BEGIN_MARKER

See Also:

• Constant Field Values

BEGINNERS

public static final List<String> BEGINNERS

END_MARKER

public static final String END_MARKER

See Also:

• Constant Field Values

ENDERS

public static final List<String> ENDERS

DSS_OID

public static final String DSS_OID

See Also:

• Constant Field Values

INSTANCE

public static final DSSPEMResourceKeyPairParser INSTANCE

Constructor Details

DSSPEMResourceKeyPairParser

public DSSPEMResourceKeyPairParser()

Method Details

extractKeyPairs

public Collection<KeyPair> extractKeyPairs(SessionContext session,
 NamedResource resourceKey,
 String beginMarker,
 String endMarker,
 FilePasswordProvider passwordProvider,
 InputStream stream,
 Map<String,String> headers)
                                    throws IOException,
GeneralSecurityException

Specified by:

extractKeyPairs in class AbstractKeyPairResourceParser

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).

resourceKey - A hint as to the origin of the text lines

beginMarker - The line containing the begin marker

endMarker - The line containing the end marker

passwordProvider - The FilePasswordProvider to use in case the data is encrypted - may be null if no encrypted

stream - The decoded data InputStream

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

Returns:

The extracted KeyPairs - may be null/empty if none.

Throws:

IOException - If failed to parse the data

GeneralSecurityException - If failed to generate the keys

decodeDSSKeyPair

public static KeyPair decodeDSSKeyPair(KeyFactory kf,
 InputStream s,
 boolean okToClose)
                                throws IOException,
GeneralSecurityException

The ASN.1 syntax for the private key:

 
 DSAPrivateKey ::= SEQUENCE {
      version Version,
      p       INTEGER,
      q       INTEGER,
      g       INTEGER,
      y       INTEGER,
      x       INTEGER
 }
 
 

Parameters:

kf - The KeyFactory To use to generate the keys

s - The InputStream containing the encoded bytes

okToClose - true if the method may close the input stream regardless of success or failure

Returns:

The recovered KeyPair

Throws:

IOException - If failed to read or decode the bytes

GeneralSecurityException - If failed to generate the keys