com.guardtime.ksi.unisignature

Interface AggregationChainLink

public interface AggregationChainLink

AggregationChainLink structure contains the following information:

• May contain level correction value. Default value is 0
• One and only one of the following three fields
• sibling hash - an `imprint' representing a hash value from the sibling node in the tree
• metadata - a sub-structure that provides the ability to incorporate client identity and other information about the request into the hash chain.
• metadata hash - metadata of limited length encoded as an imprint. This option is present for backwards compatibility with existing signatures created before the structured `metadata' field was introduced.

Method Summary

Modifier and Type	Method and Description
ChainResult	calculateChainStep(byte[] lastStepImprint, long length, HashAlgorithm algorithm)
Long	getLevelCorrection()
Identity	getLinkIdentity()
LinkMetadata	getMetadata()
byte[]	getSiblingData()
boolean	isLeft()

Method Detail

calculateChainStep

ChainResult calculateChainStep(byte[] lastStepImprint,
                               long length,
                               HashAlgorithm algorithm)
                        throws KSIException

Throws:

KSIException

getLinkIdentity

Identity getLinkIdentity()

isLeft

boolean isLeft()

getMetadata

LinkMetadata getMetadata()

getSiblingData

byte[] getSiblingData()
               throws KSIException

Throws:

KSIException

getLevelCorrection

Long getLevelCorrection()

Returns:

will return link level correction or 0 if level correction isn't present.