com.sap.cloud.sdk.services.blockchainbusinessservices.blockchainvisibility

Class MerkleProof

java.lang.Object

com.sap.cloud.sdk.services.blockchainbusinessservices.blockchainvisibility.MerkleProof

@Beta
public class MerkleProof
extends Object

MerkleProof Class is the implementation of the Merkle Proof. A merkle proof provides required information to rebuild the Merkle tree without knowing all the leaves.

Constructor Summary

Constructors

Constructor and Description
MerkleProof(ProtocolVersion version, Map<Integer,String> knownLeaves, Map<Integer,String> knownSalts, Map<String,String> knownHashes, int numberOfLeaves) creates a MerkleProof, assuming the SHA-256 hashing algorithm
MerkleProof(ProtocolVersion version, Map<Integer,String> knownLeaves, Map<Integer,String> knownSalts, Map<String,String> knownHashes, int numberOfLeaves, String hashAlgorithm) creates a MerkleProof

Method Summary

Modifier and Type	Method and Description
protected boolean	canEqual(Object other)
boolean	equals(Object o)
String	getHashAlgorithm()
Map<String,String>	getKnownHashes()
Map<Integer,String>	getKnownLeaves()
Map<Integer,String>	getKnownSalts()
int	getNumberOfLeaves()
ProtocolVersion	getProtocolVersion()
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

MerkleProof

public MerkleProof(@Nullable
                   ProtocolVersion version,
                   @Nonnull
                   Map<Integer,String> knownLeaves,
                   @Nonnull
                   Map<Integer,String> knownSalts,
                   @Nonnull
                   Map<String,String> knownHashes,
                   int numberOfLeaves)

creates a MerkleProof, assuming the SHA-256 hashing algorithm

Parameters:

version - ProtocolVersion defines how the merkle proof was built

knownLeaves - Map<Integer, String> all known leaves of the merkle tree, maps the position of the leaf to the actual value

knownSalts - Map<Integer, String> all salts for the known leaves of the merkle tree. Keys of this map must match the keys in the knownLeaves

knownHashes - Map<String, String> all hashes which are needed to build a full merkle tree with the given known leaves and salts

numberOfLeaves - number of all leaves in the tree

MerkleProof

public MerkleProof(@Nullable
                   ProtocolVersion version,
                   @Nonnull
                   Map<Integer,String> knownLeaves,
                   @Nonnull
                   Map<Integer,String> knownSalts,
                   @Nonnull
                   Map<String,String> knownHashes,
                   int numberOfLeaves,
                   @Nullable
                   String hashAlgorithm)

creates a MerkleProof

Parameters:

version - ProtocolVersion defines how the merkle proof was built

knownLeaves - Map<Integer, String> all known leaves of the merkle tree, maps the position of the leaf to the actual value

knownSalts - Map<Integer, String> all salts for the known leaves of the merkle tree. Keys of this map must match the keys in the knownLeaves

knownHashes - Map<String, String> all hashes which are needed to build a full merkle tree with the given known leaves and salts

numberOfLeaves - number of all leaves in the tree

hashAlgorithm - the hash algorithm which is used to generate the hashes

Method Detail

getProtocolVersion

@Nullable
public ProtocolVersion getProtocolVersion()

getKnownHashes

@Nonnull
public Map<String,String> getKnownHashes()

getKnownLeaves

@Nonnull
public Map<Integer,String> getKnownLeaves()

getKnownSalts

@Nonnull
public Map<Integer,String> getKnownSalts()

getNumberOfLeaves

public int getNumberOfLeaves()

getHashAlgorithm

@Nonnull
public String getHashAlgorithm()

equals

public boolean equals(@Nullable
                      Object o)

Overrides:

equals in class Object

canEqual

protected boolean canEqual(@Nullable
                           Object other)

hashCode

public int hashCode()

Overrides:

hashCode in class Object