com.trilead.ssh2.signature

Class ECDSASHA2Verify

java.lang.Object

com.trilead.ssh2.signature.ECDSASHA2Verify

All Implemented Interfaces:

SSHSignature

Direct Known Subclasses:

ECDSASHA2Verify.ECDSASHA2NISTP256Verify, ECDSASHA2Verify.ECDSASHA2NISTP384Verify, ECDSASHA2Verify.ECDSASHA2NISTP521Verify

public abstract class ECDSASHA2Verify
extends java.lang.Object
implements SSHSignature

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ECDSASHA2Verify.ECDSASHA2NISTP256Verify
static class	ECDSASHA2Verify.ECDSASHA2NISTP384Verify
static class	ECDSASHA2Verify.ECDSASHA2NISTP521Verify

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ECDSA_SHA2_PREFIX

Constructor Summary

Constructors

Constructor and Description
ECDSASHA2Verify()

Method Summary

Modifier and Type	Method and Description
java.security.spec.ECPoint	decodeECPoint(byte[] M) Decode an OctetString to EllipticCurvePoint according to SECG 2.3.4
java.security.PublicKey	decodePublicKey(byte[] key) Decode from SSH specification key to Java public key.
static byte[]	encodeECPoint(java.security.spec.ECPoint group, java.security.spec.EllipticCurve curve) Encode EllipticCurvePoint to an OctetString
byte[]	encodePublicKey(java.security.PublicKey key) Encode from Java public key to SSH specification.
byte[]	generateSignature(byte[] message, java.security.PrivateKey pk, java.security.SecureRandom secureRandom) Generate an SSH-format signature for the message and private key.
abstract java.lang.String	getCurveName()
static int	getCurveSize(java.security.spec.ECParameterSpec params)
protected abstract java.lang.String	getDigestAlgorithm()
static java.lang.String	getDigestAlgorithmForParams(java.security.interfaces.ECKey key)
abstract java.lang.String	getKeyFormat() Returns the supported signature formats.
abstract java.lang.String	getOid()
abstract java.security.spec.ECParameterSpec	getParameterSpec()
protected abstract java.lang.String	getSignatureAlgorithm()
static java.lang.String	getSshKeyType(java.security.interfaces.ECKey ecKey)
static ECDSASHA2Verify	getVerifierForKey(java.security.interfaces.ECKey key)
static ECDSASHA2Verify	getVerifierForOID(java.lang.String oid)
boolean	verifySignature(byte[] message, byte[] sshSig, java.security.PublicKey pk) Verifies a SSH-format signature for a given key.

Methods inherited from class java.lang.Object

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

Field Detail

ECDSA_SHA2_PREFIX

public static final java.lang.String ECDSA_SHA2_PREFIX

See Also:

Constant Field Values

Constructor Detail

ECDSASHA2Verify

public ECDSASHA2Verify()

Method Detail

getKeyFormat

public abstract java.lang.String getKeyFormat()

Description copied from interface: SSHSignature

Returns the supported signature formats.

Specified by:

getKeyFormat in interface SSHSignature

decodePublicKey

public java.security.PublicKey decodePublicKey(byte[] key)
                                        throws java.io.IOException

Description copied from interface: SSHSignature

Decode from SSH specification key to Java public key.

Specified by:

decodePublicKey in interface SSHSignature

Throws:

java.io.IOException

getParameterSpec

public abstract java.security.spec.ECParameterSpec getParameterSpec()

encodePublicKey

public byte[] encodePublicKey(java.security.PublicKey key)

Description copied from interface: SSHSignature

Encode from Java public key to SSH specification.

Specified by:

encodePublicKey in interface SSHSignature

getVerifierForKey

public static ECDSASHA2Verify getVerifierForKey(java.security.interfaces.ECKey key)

getSshKeyType

public static java.lang.String getSshKeyType(java.security.interfaces.ECKey ecKey)

getCurveName

public abstract java.lang.String getCurveName()

getOid

public abstract java.lang.String getOid()

getCurveSize

public static int getCurveSize(java.security.spec.ECParameterSpec params)

getVerifierForOID

public static ECDSASHA2Verify getVerifierForOID(java.lang.String oid)

generateSignature

public byte[] generateSignature(byte[] message,
                                java.security.PrivateKey pk,
                                java.security.SecureRandom secureRandom)
                         throws java.io.IOException

Description copied from interface: SSHSignature

Generate an SSH-format signature for the message and private key.

Specified by:

generateSignature in interface SSHSignature

Throws:

java.io.IOException

getSignatureAlgorithm

protected abstract java.lang.String getSignatureAlgorithm()

verifySignature

public boolean verifySignature(byte[] message,
                               byte[] sshSig,
                               java.security.PublicKey pk)
                        throws java.io.IOException

Description copied from interface: SSHSignature

Verifies a SSH-format signature for a given key.

Specified by:

verifySignature in interface SSHSignature

Throws:

java.io.IOException

getDigestAlgorithmForParams

public static java.lang.String getDigestAlgorithmForParams(java.security.interfaces.ECKey key)

getDigestAlgorithm

protected abstract java.lang.String getDigestAlgorithm()

decodeECPoint

public java.security.spec.ECPoint decodeECPoint(byte[] M)

Decode an OctetString to EllipticCurvePoint according to SECG 2.3.4

encodeECPoint

public static byte[] encodeECPoint(java.security.spec.ECPoint group,
                                   java.security.spec.EllipticCurve curve)

Encode EllipticCurvePoint to an OctetString