com.alipay.mychain.zoro.crypto.ecdsa

类 ECDSASignature

java.lang.Object

com.alipay.mychain.zoro.crypto.ecdsa.ECDSASignature

所有已实现的接口:

ISignature

public class ECDSASignature
extends Object
implements ISignature

作者:

muchen.zyy

字段概要

字段

限定符和类型	字段和说明
BigInteger	r
BigInteger	s

构造器概要

构造器

构造器和说明
ECDSASignature(BigInteger r, BigInteger s)

方法概要

限定符和类型	方法和说明
static 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)
boolean	isCanonical()
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, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

r

public final BigInteger r

s

public final BigInteger s

构造器详细资料

ECDSASignature

public ECDSASignature(BigInteger r,
                      BigInteger s)

方法详细资料

isCanonical

public boolean isCanonical()

返回:

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

toCanonicalised

public 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.

返回:

the signature in a canonicalised form.

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 ECDSASignature decodeFromDER(byte[] bytes)
                                    throws IllegalArgumentException

抛出:

IllegalArgumentException

derByteStream

protected ByteArrayOutputStream derByteStream()
                                       throws IOException

抛出:

IOException

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object