network.nerve.core.crypto

类 ECKey.ECDSASignature

java.lang.Object

network.nerve.core.crypto.ECKey.ECDSASignature

封闭类:

ECKey

public static class ECKey.ECDSASignature
extends Object

Groups the two components that make up a signature, and provides a way to encode to DER form, which is how ECDSA signatures are represented when embedded in other data structures in the Bitcoin protocol. The raw components can be useful for doing further EC maths on them.

字段概要

字段

限定符和类型	字段和说明
BigInteger	r The two components of the signature.
BigInteger	s The two components of the signature.

构造器概要

构造器

构造器和说明
ECDSASignature(BigInteger r, BigInteger s) Constructs a signature with the given components.

方法概要

限定符和类型	方法和说明
static ECKey.ECDSASignature	decodeFromDER(byte[] bytes)
protected ByteArrayOutputStream	derByteStream()
byte[]	encodeToDER() DER is an international standard for serializing data structures which is widely used in cryptography.
boolean	equals(Object o)
int	hashCode()
boolean	isCanonical() Returns true if the S component is "low", that means it is below ECKey.HALF_CURVE_ORDER.
ECKey.ECDSASignature	toCanonicalised() Will automatically adjust the S component to be less than or equal to half the curve order, if necessary.

从类继承的方法 java.lang.Object

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

字段详细资料

r

public final BigInteger r

The two components of the signature.

s

public final BigInteger s

The two components of the signature.

构造器详细资料

ECDSASignature

public ECDSASignature(BigInteger r,
                      BigInteger s)

Constructs a signature with the given components. Does NOT automatically canonicalise the signature.

方法详细资料

isCanonical

public boolean isCanonical()

Returns true if the S component is "low", that means it is below ECKey.HALF_CURVE_ORDER. See BIP62.

toCanonicalised

public ECKey.ECDSASignature toCanonicalised()

Will automatically adjust the S component to be less than or equal to half the curve order, if necessary. This is required because for every signature (r,s) the signature (r, -s (mod N)) is a valid signature of the same message. However, we dislike the ability to modify the bits of a Bitcoin transaction after it's been signed, as that violates various assumed invariants. Thus in future only one of those forms will be considered legal and the other will be banned.

encodeToDER

public byte[] encodeToDER()

DER is an international standard for serializing data structures which is widely used in cryptography. It's somewhat like protocol buffers but less convenient. This method returns a standard DER encoding of the signature, as recognized by OpenSSL and other libraries.

decodeFromDER

public static ECKey.ECDSASignature decodeFromDER(byte[] bytes)

抛出:

Exception - if the signature is unparseable in some way.

derByteStream

protected ByteArrayOutputStream derByteStream()
                                       throws IOException

抛出:

IOException

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object