Package org.apache.sshd.common.config.keys.impl

Class SM2PublicKeyEntryDecoder

java.lang.Object

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

org.apache.sshd.common.config.keys.impl.AbstractIdentityResourceLoader<ECPublicKey,ECPrivateKey>

org.apache.sshd.common.config.keys.impl.AbstractKeyEntryResolver<ECPublicKey,ECPrivateKey>

org.apache.sshd.common.config.keys.impl.AbstractPublicKeyEntryDecoder<ECPublicKey,ECPrivateKey>

org.apache.sshd.common.config.keys.impl.SM2PublicKeyEntryDecoder

All Implemented Interfaces:

IdentityResourceLoader<ECPublicKey,ECPrivateKey>, KeyEntryResolver<ECPublicKey,ECPrivateKey>, KeyTypeNamesSupport, PublicKeyEntryDecoder<ECPublicKey,ECPrivateKey>, PublicKeyEntryResolver, PublicKeyRawDataDecoder<ECPublicKey>

public class SM2PublicKeyEntryDecoder
extends AbstractPublicKeyEntryDecoder<ECPublicKey,ECPrivateKey>

SM2公钥解码器，支持64字节X+Y坐标的ASN.1编码格式

Field Summary

Fields

Modifier and Type	Field	Description
static final SM2PublicKeyEntryDecoder	INSTANCE
static final int	MAX_ALLOWED_POINT_SIZE
static final int	MAX_CURVE_NAME_LENGTH
static final int	PUBLIC_KEY_ASN1_MIN_LENGTH
static final String	SM2_CURVE_NAME
static final String	SM2_KEY_TYPE

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

log

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

MAX_BIGINT_OCTETS_COUNT

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

FAILING, IGNORING

Constructor Summary

Constructors

Constructor	Description
SM2PublicKeyEntryDecoder()

Method Summary

Modifier and Type	Method	Description
ECPrivateKey	clonePrivateKey(ECPrivateKey key)
ECPublicKey	clonePublicKey(ECPublicKey key)
ECPublicKey	decodePublicKey(SessionContext session, String keyType, InputStream keyData, Map<String,String> headers)
private ECPoint	decodeRawSM2PublicKey(byte[] rawData)	解析64字节原始格式（前32字节X，后32字节Y）
String	encodePublicKey(OutputStream s, ECPublicKey key)	Encodes the PublicKey using the OpenSSH format - same one used by the decodePublicKey method(s)
private byte[]	encodeSM2PublicKey(ECPoint w)	将公钥点编码为ASN.1 SEQUENCE格式
KeyPair	generateKeyPair(int keySize)
KeyFactory	getKeyFactoryInstance()
KeyPairGenerator	getKeyPairGenerator()
private ECParameterSpec	getSM2ParameterSpec()
private BigInteger	parseASN1Integer(org.bouncycastle.asn1.ASN1Encodable obj)
private ECPoint	parseSM2PublicKey(byte[] asn1Data)	解析64字节X+Y坐标的ASN.1编码格式

Methods inherited from class org.apache.sshd.common.config.keys.impl.AbstractPublicKeyEntryDecoder

parseBooleanHeader

Methods inherited from class org.apache.sshd.common.config.keys.impl.AbstractKeyEntryResolver

generatePrivateKey, generatePublicKey, toString

Methods inherited from class org.apache.sshd.common.config.keys.impl.AbstractIdentityResourceLoader

getPrivateKeyType, getPublicKeyType, getSupportedKeyTypes

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, wait, wait, wait

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

getPrivateKeyType, getPublicKeyType

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

cloneKeyPair

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

getSupportedKeyTypes

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

decodePublicKeyByType, resolve

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

decodePublicKey, decodePublicKey

Field Details

SM2_KEY_TYPE

public static final String SM2_KEY_TYPE

See Also:

• Constant Field Values

SM2_CURVE_NAME

public static final String SM2_CURVE_NAME

See Also:

• Constant Field Values

PUBLIC_KEY_ASN1_MIN_LENGTH

public static final int PUBLIC_KEY_ASN1_MIN_LENGTH

See Also:

• Constant Field Values

MAX_ALLOWED_POINT_SIZE

public static final int MAX_ALLOWED_POINT_SIZE

See Also:

• Constant Field Values

MAX_CURVE_NAME_LENGTH

public static final int MAX_CURVE_NAME_LENGTH

See Also:

• Constant Field Values

INSTANCE

public static final SM2PublicKeyEntryDecoder INSTANCE

Constructor Details

SM2PublicKeyEntryDecoder

public SM2PublicKeyEntryDecoder()

Method Details

decodePublicKey

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

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

parseSM2PublicKey

private ECPoint parseSM2PublicKey(byte[] asn1Data)
                           throws IOException

解析64字节X+Y坐标的ASN.1编码格式

Throws:

IOException

parseASN1Integer

private BigInteger parseASN1Integer(org.bouncycastle.asn1.ASN1Encodable obj)
                             throws IOException

Throws:

IOException

decodeRawSM2PublicKey

private ECPoint decodeRawSM2PublicKey(byte[] rawData)
                               throws IOException

解析64字节原始格式（前32字节X，后32字节Y）

Throws:

IOException

clonePublicKey

public ECPublicKey clonePublicKey(ECPublicKey key)
                           throws GeneralSecurityException

Parameters:

key - The PublicKey to clone - ignored if null

Returns:

The cloned key (or null if no original key)

Throws:

GeneralSecurityException - If failed to clone the key

clonePrivateKey

public ECPrivateKey clonePrivateKey(ECPrivateKey key)
                             throws GeneralSecurityException

Parameters:

key - The PrivateKey to clone - ignored if null

Returns:

The cloned key (or null if no original key)

Throws:

GeneralSecurityException - If failed to clone the key

encodePublicKey

public String encodePublicKey(OutputStream s,
 ECPublicKey key)
                       throws IOException

Description copied from interface: PublicKeyEntryDecoder

Encodes the PublicKey using the OpenSSH format - same one used by the decodePublicKey method(s)

Parameters:

s - The OutputStream to write the data to

key - The PublicKey - may not be null

Returns:

The key type value - one of the KeyTypeNamesSupport.getSupportedKeyTypes()

Throws:

IOException - If failed to generate the encoding

encodeSM2PublicKey

private byte[] encodeSM2PublicKey(ECPoint w)
                           throws IOException

将公钥点编码为ASN.1 SEQUENCE格式

Throws:

IOException

getKeyFactoryInstance

public KeyFactory getKeyFactoryInstance()
                                 throws GeneralSecurityException

Returns:

A KeyFactory suitable for the specific decoder type

Throws:

GeneralSecurityException - If failed to create one

generateKeyPair

public KeyPair generateKeyPair(int keySize)
                        throws GeneralSecurityException

Parameters:

keySize - Key size in bits

Returns:

A KeyPair with the specified key size

Throws:

GeneralSecurityException - if unable to generate the pair

getKeyPairGenerator

public KeyPairGenerator getKeyPairGenerator()
                                     throws GeneralSecurityException

Returns:

A KeyPairGenerator suitable for this decoder

Throws:

GeneralSecurityException - If failed to create the generator

getSM2ParameterSpec

private ECParameterSpec getSM2ParameterSpec()