protoutil

package
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 Go to latest Published: Mar 15, 2024 License: Apache-2.0 Imports: 29 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func BlockDataHash 

func BlockDataHash(b *cb.BlockData) ([]byte, error)

func BlockHeaderBytes 

func BlockHeaderBytes(b *cb.BlockHeader) []byte

func BlockHeaderHash 

func BlockHeaderHash(b *cb.BlockHeader) []byte

func ChannelHeader 

func ChannelHeader(env *cb.Envelope) (*cb.ChannelHeader, error)

ChannelHeader returns the *cb.ChannelHeader for a given *cb.Envelope.

func ChannelID 

func ChannelID(env *cb.Envelope) (string, error)

ChannelID returns the Channel ID for a given *cb.Envelope.

func CheckTxID 

func CheckTxID(txid string, nonce, creator []byte) error

CheckTxID checks that txid is equal to the Hash computed over the concatenation of nonce and creator.

func ComputeBlockDataHash 

func ComputeBlockDataHash(b *cb.BlockData) []byte

func ComputeTxID 

func ComputeTxID(nonce, creator []byte) string

ComputeTxID computes TxID as the Hash computed over the concatenation of nonce and creator.

func CopyBlockMetadata 

func CopyBlockMetadata(src *cb.Block, dst *cb.Block)

CopyBlockMetadata copies metadata from one block into another

func CreateChaincodeProposal 

func CreateChaincodeProposal(typ common.HeaderType, channelID string, cis *peer.ChaincodeInvocationSpec, creator []byte) (*peer.Proposal, string, error)

CreateChaincodeProposal creates a proposal from given input. It returns the proposal and the transaction id associated to the proposal

func CreateChaincodeProposalWithTransient 

func CreateChaincodeProposalWithTransient(typ common.HeaderType, channelID string, cis *peer.ChaincodeInvocationSpec, creator []byte, transientMap map[string][]byte) (*peer.Proposal, string, error)

CreateChaincodeProposalWithTransient creates a proposal from given input It returns the proposal and the transaction id associated to the proposal

func CreateChaincodeProposalWithTxIDAndTransient 

func CreateChaincodeProposalWithTxIDAndTransient(typ common.HeaderType, channelID string, cis *peer.ChaincodeInvocationSpec, creator []byte, txid string, transientMap map[string][]byte) (*peer.Proposal, string, error)

CreateChaincodeProposalWithTxIDAndTransient creates a proposal from given input. It returns the proposal and the transaction id associated with the proposal

func CreateChaincodeProposalWithTxIDNonceAndTransient 

func CreateChaincodeProposalWithTxIDNonceAndTransient(txid string, typ common.HeaderType, channelID string, cis *peer.ChaincodeInvocationSpec, nonce, creator []byte, transientMap map[string][]byte) (*peer.Proposal, string, error)

CreateChaincodeProposalWithTxIDNonceAndTransient creates a proposal from given input

func CreateDeployProposalFromCDS 

func CreateDeployProposalFromCDS(
	channelID string,
	cds *peer.ChaincodeDeploymentSpec,
	creator []byte,
	policy []byte,
	escc []byte,
	vscc []byte,
	collectionConfig []byte) (*peer.Proposal, string, error)

CreateDeployProposalFromCDS returns a deploy proposal given a serialized identity and a ChaincodeDeploymentSpec

func CreateGetChaincodesProposal 

func CreateGetChaincodesProposal(channelID string, creator []byte) (*peer.Proposal, string, error)

CreateGetChaincodesProposal returns a GETCHAINCODES proposal given a serialized identity

func CreateGetInstalledChaincodesProposal 

func CreateGetInstalledChaincodesProposal(creator []byte) (*peer.Proposal, string, error)

CreateGetInstalledChaincodesProposal returns a GETINSTALLEDCHAINCODES proposal given a serialized identity

func CreateInstallProposalFromCDS 

func CreateInstallProposalFromCDS(ccpack proto.Message, creator []byte) (*peer.Proposal, string, error)

CreateInstallProposalFromCDS returns a install proposal given a serialized identity and a ChaincodeDeploymentSpec

func CreateNonce 

func CreateNonce() ([]byte, error)

CreateNonce generates a nonce using the common/crypto package.

func CreateNonceOrPanic 

func CreateNonceOrPanic() []byte

CreateNonceOrPanic generates a nonce using the common/crypto package and panics if this operation fails.

func CreateProposalFromCIS 

func CreateProposalFromCIS(typ common.HeaderType, channelID string, cis *peer.ChaincodeInvocationSpec, creator []byte) (*peer.Proposal, string, error)

CreateProposalFromCIS returns a proposal given a serialized identity and a ChaincodeInvocationSpec

func CreateProposalFromCISAndTxid 

func CreateProposalFromCISAndTxid(txid string, typ common.HeaderType, channelID string, cis *peer.ChaincodeInvocationSpec, creator []byte) (*peer.Proposal, string, error)

CreateProposalFromCISAndTxid returns a proposal given a serialized identity and a ChaincodeInvocationSpec

func CreateProposalResponse 

func CreateProposalResponse(
	hdrbytes []byte,
	payl []byte,
	response *peer.Response,
	results []byte,
	events []byte,
	ccid *peer.ChaincodeID,
	signingEndorser Signer,
) (*peer.ProposalResponse, error)

CreateProposalResponse creates a proposal response.

func CreateProposalResponseFailure 

func CreateProposalResponseFailure(
	hdrbytes []byte,
	payl []byte,
	response *peer.Response,
	results []byte,
	events []byte,
	chaincodeName string,
) (*peer.ProposalResponse, error)

CreateProposalResponseFailure creates a proposal response for cases where endorsement proposal fails either due to a endorsement failure or a chaincode failure (chaincode response status >= shim.ERRORTHRESHOLD)

func CreateSignedEnvelope 

func CreateSignedEnvelope(
	txType common.HeaderType,
	channelID string,
	signer Signer,
	dataMsg proto.Message,
	msgVersion int32,
	epoch uint64,
) (*common.Envelope, error)

CreateSignedEnvelope creates a signed envelope of the desired type, with marshaled dataMsg and signs it

func CreateSignedEnvelopeWithTLSBinding 

func CreateSignedEnvelopeWithTLSBinding(
	txType common.HeaderType,
	channelID string,
	signer Signer,
	dataMsg proto.Message,
	msgVersion int32,
	epoch uint64,
	tlsCertHash []byte,
) (*common.Envelope, error)

CreateSignedEnvelopeWithTLSBinding creates a signed envelope of the desired type, with marshaled dataMsg and signs it. It also includes a TLS cert hash into the channel header

func CreateSignedTx 

func CreateSignedTx(
	spec *peer.ChaincodeSpec,
	proposal *peer.Proposal,
	signer Signer,
	resps ...*peer.ProposalResponse,
) (*common.Envelope, error)

CreateSignedTx assembles an Envelope message from proposal, endorsements, and a signer. This function should be called by a client when it has collected enough endorsements for a proposal to create a transaction and submit it to peers for ordering

func CreateUpgradeProposalFromCDS 

func CreateUpgradeProposalFromCDS(
	channelID string,
	cds *peer.ChaincodeDeploymentSpec,
	creator []byte,
	policy []byte,
	escc []byte,
	vscc []byte,
	collectionConfig []byte) (*peer.Proposal, string, error)

CreateUpgradeProposalFromCDS returns a upgrade proposal given a serialized identity and a ChaincodeDeploymentSpec

func EnvelopeToConfigUpdate 

func EnvelopeToConfigUpdate(configtx *cb.Envelope) (*cb.ConfigUpdateEnvelope, error)

EnvelopeToConfigUpdate is used to extract a ConfigUpdateEnvelope from an envelope of type CONFIG_UPDATE

func ExtractEnvelope 

func ExtractEnvelope(block *cb.Block, index int) (*cb.Envelope, error)

ExtractEnvelope retrieves the requested envelope from a given block and unmarshals it

func ExtractEnvelopeOrPanic 

func ExtractEnvelopeOrPanic(block *cb.Block, index int) *cb.Envelope

ExtractEnvelopeOrPanic retrieves the requested envelope from a given block and unmarshals it -- it panics if either of these operations fail

func GetActionFromEnvelope 

func GetActionFromEnvelope(envBytes []byte) (*peer.ChaincodeAction, error)

GetActionFromEnvelope extracts a ChaincodeAction message from a serialized Envelope TODO: fix function name as per FAB-11831

func GetActionFromEnvelopeMsg 

func GetActionFromEnvelopeMsg(env *common.Envelope) (*peer.ChaincodeAction, error)

func GetBytesChaincodeActionPayload 

func GetBytesChaincodeActionPayload(cap *peer.ChaincodeActionPayload) ([]byte, error)

GetBytesChaincodeActionPayload get the bytes of ChaincodeActionPayload from the message

func GetBytesChaincodeEvent 

func GetBytesChaincodeEvent(event *peer.ChaincodeEvent) ([]byte, error)

GetBytesChaincodeEvent gets the bytes of ChaincodeEvent

func GetBytesChaincodeProposalPayload 

func GetBytesChaincodeProposalPayload(cpp *peer.ChaincodeProposalPayload) ([]byte, error)

GetBytesChaincodeProposalPayload gets the chaincode proposal payload

func GetBytesEnvelope 

func GetBytesEnvelope(env *common.Envelope) ([]byte, error)

GetBytesEnvelope get the bytes of Envelope from the message

func GetBytesHeader 

func GetBytesHeader(hdr *common.Header) ([]byte, error)

GetBytesHeader get the bytes of Header from the message

func GetBytesPayload 

func GetBytesPayload(payl *common.Payload) ([]byte, error)

GetBytesPayload get the bytes of Payload from the message

func GetBytesProposalPayloadForTx 

func GetBytesProposalPayloadForTx(
	payload *peer.ChaincodeProposalPayload,
) ([]byte, error)

GetBytesProposalPayloadForTx takes a ChaincodeProposalPayload and returns its serialized version according to the visibility field

func GetBytesProposalResponse 

func GetBytesProposalResponse(pr *peer.ProposalResponse) ([]byte, error)

GetBytesProposalResponse gets proposal bytes response

func GetBytesProposalResponsePayload 

func GetBytesProposalResponsePayload(hash []byte, response *peer.Response, result []byte, event []byte, ccid *peer.ChaincodeID) ([]byte, error)

GetBytesProposalResponsePayload gets proposal response payload

func GetBytesResponse 

func GetBytesResponse(res *peer.Response) ([]byte, error)

GetBytesResponse gets the bytes of Response

func GetBytesSignatureHeader 

func GetBytesSignatureHeader(hdr *common.SignatureHeader) ([]byte, error)

GetBytesSignatureHeader get the bytes of SignatureHeader from the message

func GetBytesTransaction 

func GetBytesTransaction(tx *peer.Transaction) ([]byte, error)

GetBytesTransaction get the bytes of Transaction from the message

func GetChannelIDFromBlock 

func GetChannelIDFromBlock(block *cb.Block) (string, error)

GetChannelIDFromBlock returns channel ID in the block

func GetChannelIDFromBlockBytes 

func GetChannelIDFromBlockBytes(bytes []byte) (string, error)

GetChannelIDFromBlockBytes returns channel ID given byte array which represents the block

func GetConsenterMetadataFromBlock 

func GetConsenterMetadataFromBlock(block *cb.Block) (*cb.Metadata, error)

GetConsenterMetadataFromBlock attempts to retrieve consenter metadata from the value stored in block metadata at index SIGNATURES (first field). If no consenter metadata is found there, it falls back to index ORDERER (third field).

func GetEnvelopeFromBlock 

func GetEnvelopeFromBlock(data []byte) (*common.Envelope, error)

GetEnvelopeFromBlock gets an envelope from a block's Data field.

func GetLastConfigIndexFromBlock 

func GetLastConfigIndexFromBlock(block *cb.Block) (uint64, error)

GetLastConfigIndexFromBlock retrieves the index of the last config block as encoded in the block metadata

func GetLastConfigIndexFromBlockOrPanic 

func GetLastConfigIndexFromBlockOrPanic(block *cb.Block) uint64

GetLastConfigIndexFromBlockOrPanic retrieves the index of the last config block as encoded in the block metadata, or panics on error

func GetMetadataFromBlock 

func GetMetadataFromBlock(block *cb.Block, index cb.BlockMetadataIndex) (*cb.Metadata, error)

GetMetadataFromBlock retrieves metadata at the specified index.

func GetMetadataFromBlockOrPanic 

func GetMetadataFromBlockOrPanic(block *cb.Block, index cb.BlockMetadataIndex) *cb.Metadata

GetMetadataFromBlockOrPanic retrieves metadata at the specified index, or panics on error

func GetOrComputeTxIDFromEnvelope 

func GetOrComputeTxIDFromEnvelope(txEnvelopBytes []byte) (string, error)

GetOrComputeTxIDFromEnvelope gets the txID present in a given transaction envelope. If the txID is empty, it constructs the txID from nonce and creator fields in the envelope.

func GetPayloads 

func GetPayloads(txActions *peer.TransactionAction) (*peer.ChaincodeActionPayload, *peer.ChaincodeAction, error)

GetPayloads gets the underlying payload objects in a TransactionAction

func GetProposalHash1 

func GetProposalHash1(header *common.Header, ccPropPayl []byte) ([]byte, error)

GetProposalHash1 gets the proposal hash bytes after sanitizing the chaincode proposal payload according to the rules of visibility

func GetProposalHash2 

func GetProposalHash2(header *common.Header, ccPropPayl []byte) ([]byte, error)

GetProposalHash2 gets the proposal hash - this version is called by the committer where the visibility policy has already been enforced and so we already get what we have to get in ccPropPayl

func GetSignedProposal 

func GetSignedProposal(prop *peer.Proposal, signer Signer) (*peer.SignedProposal, error)

GetSignedProposal returns a signed proposal given a Proposal message and a signing identity

func HasConfigTx 

func HasConfigTx(blockdata *cb.BlockData) bool

func InitBlockMetadata 

func InitBlockMetadata(block *cb.Block)

InitBlockMetadata initializes metadata structure

func InvokedChaincodeName 

func InvokedChaincodeName(proposalBytes []byte) (string, error)

InvokedChaincodeName takes the proposal bytes of a SignedProposal, and unpacks it all the way down, until either an error is encountered, or the chaincode name is found. This is useful primarily for chaincodes which wish to know the chaincode name originally invoked, in order to deny cc2cc invocations (or, perhaps to deny direct invocations and require cc2cc).

func IsConfigBlock 

func IsConfigBlock(block *cb.Block) bool

IsConfigBlock validates whenever given block contains configuration update transaction

func IsConfigTransaction 

func IsConfigTransaction(envelope *cb.Envelope) bool

func LogMessageForSerializedIdentities 

func LogMessageForSerializedIdentities(signedData []*SignedData) (logMsg string)

func LogMessageForSerializedIdentity 

func LogMessageForSerializedIdentity(serializedIdentity []byte) string

LogMessageForSerializedIdentity returns a string with seriealized identity information, or a string indicating why the serialized identity information cannot be returned. Any errors are intentially returned in the return strings so that the function can be used in single-line log messages with minimal clutter.

func MakeChannelHeader 

func MakeChannelHeader(headerType cb.HeaderType, version int32, chainID string, epoch uint64) *cb.ChannelHeader

MakeChannelHeader creates a ChannelHeader.

func MakePayloadHeader 

func MakePayloadHeader(ch *cb.ChannelHeader, sh *cb.SignatureHeader) *cb.Header

MakePayloadHeader creates a Payload Header.

func MakeSignatureHeader 

func MakeSignatureHeader(serializedCreatorCertChain []byte, nonce []byte) *cb.SignatureHeader

MakeSignatureHeader creates a SignatureHeader.

func Marshal 

func Marshal(pb proto.Message) ([]byte, error)

Marshal serializes a protobuf message.

func MarshalOrPanic 

func MarshalOrPanic(pb proto.Message) []byte

MarshalOrPanic serializes a protobuf message and panics if this operation fails

func MockSignedEndorserProposal2OrPanic 

func MockSignedEndorserProposal2OrPanic(
	channelID string,
	cs *peer.ChaincodeSpec,
	signer Signer,
) (*peer.SignedProposal, *peer.Proposal)

func MockSignedEndorserProposalOrPanic 

func MockSignedEndorserProposalOrPanic(
	channelID string,
	cs *peer.ChaincodeSpec,
	creator,
	signature []byte,
) (*peer.SignedProposal, *peer.Proposal)

MockSignedEndorserProposalOrPanic creates a SignedProposal with the passed arguments

func NewBlock 

func NewBlock(seqNum uint64, previousHash []byte) *cb.Block

NewBlock constructs a block with no data and no metadata.

func NewConfigGroup 

func NewConfigGroup() *common.ConfigGroup

func NewSignatureHeader 

func NewSignatureHeader(id identity.Serializer) (*cb.SignatureHeader, error)

NewSignatureHeader returns a SignatureHeader with a valid nonce.

func NewSignatureHeaderOrPanic 

func NewSignatureHeaderOrPanic(id identity.Serializer) *cb.SignatureHeader

NewSignatureHeaderOrPanic returns a signature header and panics on error.

func SetTxID 

func SetTxID(channelHeader *cb.ChannelHeader, signatureHeader *cb.SignatureHeader)

SetTxID generates a transaction id based on the provided signature header and sets the TxId field in the channel header

func SignOrPanic 

func SignOrPanic(signer identity.Signer, msg []byte) []byte

SignOrPanic signs a message and panics on error.

func UnmarshalBlock 

func UnmarshalBlock(encoded []byte) (*common.Block, error)

UnmarshalBlock unmarshals bytes to a Block

func UnmarshalBlockOrPanic 

func UnmarshalBlockOrPanic(encoded []byte) *common.Block

UnmarshalBlockOrPanic unmarshals bytes to an Block or panics on error

func UnmarshalChaincodeAction 

func UnmarshalChaincodeAction(caBytes []byte) (*peer.ChaincodeAction, error)

UnmarshalChaincodeAction unmarshals bytes to a ChaincodeAction

func UnmarshalChaincodeActionPayload 

func UnmarshalChaincodeActionPayload(capBytes []byte) (*peer.ChaincodeActionPayload, error)

UnmarshalChaincodeActionPayload unmarshals bytes to a ChaincodeActionPayload

func UnmarshalChaincodeDeploymentSpec 

func UnmarshalChaincodeDeploymentSpec(code []byte) (*peer.ChaincodeDeploymentSpec, error)

UnmarshalChaincodeDeploymentSpec unmarshals bytes to a ChaincodeDeploymentSpec

func UnmarshalChaincodeEvents 

func UnmarshalChaincodeEvents(eBytes []byte) (*peer.ChaincodeEvent, error)

UnmarshalChaincodeEvents unmarshals bytes to a ChaincodeEvent

func UnmarshalChaincodeHeaderExtension 

func UnmarshalChaincodeHeaderExtension(hdrExtension []byte) (*peer.ChaincodeHeaderExtension, error)

UnmarshalChaincodeHeaderExtension unmarshals bytes to a ChaincodeHeaderExtension

func UnmarshalChaincodeID 

func UnmarshalChaincodeID(bytes []byte) (*peer.ChaincodeID, error)

UnmarshalChaincodeID unmarshals bytes to a ChaincodeID

func UnmarshalChaincodeInvocationSpec 

func UnmarshalChaincodeInvocationSpec(encoded []byte) (*peer.ChaincodeInvocationSpec, error)

UnmarshalChaincodeInvocationSpec unmarshals bytes to a ChaincodeInvocationSpec

func UnmarshalChaincodeProposalPayload 

func UnmarshalChaincodeProposalPayload(bytes []byte) (*peer.ChaincodeProposalPayload, error)

UnmarshalChaincodeProposalPayload unmarshals bytes to a ChaincodeProposalPayload

func UnmarshalChannelHeader 

func UnmarshalChannelHeader(bytes []byte) (*common.ChannelHeader, error)

UnmarshalChannelHeader unmarshals bytes to a ChannelHeader

func UnmarshalChannelHeaderOrPanic 

func UnmarshalChannelHeaderOrPanic(bytes []byte) *common.ChannelHeader

UnmarshalChannelHeaderOrPanic unmarshals bytes to a ChannelHeader or panics on error

func UnmarshalConfigEnvelope 

func UnmarshalConfigEnvelope(bytes []byte) (*common.ConfigEnvelope, error)

UnmarshalConfigEnvelope unmarshals bytes to a ConfigEnvelope

func UnmarshalEnvelope 

func UnmarshalEnvelope(encoded []byte) (*common.Envelope, error)

UnmarshalEnvelope unmarshals bytes to a Envelope

func UnmarshalEnvelopeOfType 

func UnmarshalEnvelopeOfType(envelope *cb.Envelope, headerType cb.HeaderType, message proto.Message) (*cb.ChannelHeader, error)

UnmarshalEnvelopeOfType unmarshals an envelope of the specified type, including unmarshalling the payload data

func UnmarshalEnvelopeOrPanic 

func UnmarshalEnvelopeOrPanic(encoded []byte) *common.Envelope

UnmarshalEnvelopeOrPanic unmarshals bytes to an Envelope structure or panics on error

func UnmarshalHashedRWSet 

func UnmarshalHashedRWSet(bytes []byte) (*kvrwset.HashedRWSet, error)

UnmarshalHashedRWSet unmarshals bytes to a HashedRWSet

func UnmarshalHeader 

func UnmarshalHeader(bytes []byte) (*common.Header, error)

UnmarshalHeader unmarshals bytes to a Header

func UnmarshalIdentifierHeader 

func UnmarshalIdentifierHeader(bytes []byte) (*common.IdentifierHeader, error)

UnmarshalIdentifierHeader unmarshals bytes to an IdentifierHeader

func UnmarshalKVRWSet 

func UnmarshalKVRWSet(bytes []byte) (*kvrwset.KVRWSet, error)

UnmarshalKVRWSet unmarshals bytes to a KVRWSet

func UnmarshalPayload 

func UnmarshalPayload(encoded []byte) (*common.Payload, error)

UnmarshalPayload unmarshals bytes to a Payload

func UnmarshalPayloadOrPanic 

func UnmarshalPayloadOrPanic(encoded []byte) *common.Payload

UnmarshalPayloadOrPanic unmarshals bytes to a Payload structure or panics on error

func UnmarshalProposal 

func UnmarshalProposal(propBytes []byte) (*peer.Proposal, error)

UnmarshalProposal unmarshals bytes to a Proposal

func UnmarshalProposalResponse 

func UnmarshalProposalResponse(prBytes []byte) (*peer.ProposalResponse, error)

UnmarshalProposalResponse unmarshals bytes to a ProposalResponse

func UnmarshalProposalResponsePayload 

func UnmarshalProposalResponsePayload(prpBytes []byte) (*peer.ProposalResponsePayload, error)

UnmarshalProposalResponsePayload unmarshals bytes to a ProposalResponsePayload

func UnmarshalResponse 

func UnmarshalResponse(resBytes []byte) (*peer.Response, error)

UnmarshalResponse unmarshals bytes to a Response

func UnmarshalSerializedIdentity 

func UnmarshalSerializedIdentity(bytes []byte) (*msp.SerializedIdentity, error)

func UnmarshalSignatureHeader 

func UnmarshalSignatureHeader(bytes []byte) (*common.SignatureHeader, error)

UnmarshalSignatureHeader unmarshals bytes to a SignatureHeader

func UnmarshalSignatureHeaderOrPanic 

func UnmarshalSignatureHeaderOrPanic(bytes []byte) *common.SignatureHeader

UnmarshalSignatureHeaderOrPanic unmarshals bytes to a SignatureHeader or panics on error

func UnmarshalSignaturePolicy 

func UnmarshalSignaturePolicy(bytes []byte) (*common.SignaturePolicyEnvelope, error)

UnmarshalSignaturePolicy unmarshals bytes to a SignaturePolicyEnvelope

func UnmarshalTransaction 

func UnmarshalTransaction(txBytes []byte) (*peer.Transaction, error)

UnmarshalTransaction unmarshals bytes to a Transaction

func UnmarshalTxReadWriteSet 

func UnmarshalTxReadWriteSet(bytes []byte) (*rwset.TxReadWriteSet, error)

UnmarshalTxReadWriteSet unmarshals bytes to a TxReadWriteSet

func VerifyTransactionsAreWellFormed 

func VerifyTransactionsAreWellFormed(bd *cb.BlockData) error

Types

type BlockVerifierFunc 

type BlockVerifierFunc func(header *cb.BlockHeader, metadata *cb.BlockMetadata) error

func BlockSignatureVerifier 

func BlockSignatureVerifier(bftEnabled bool, consenters []*cb.Consenter, policy policy) BlockVerifierFunc

type FAME 

type FAME struct {
	P *big.Int // order of the elliptic curve
}

FAME represents a FAME scheme.

func NewFAME 

func NewFAME() *FAME

NewFAME configures a new instance of the scheme.

func (FAME) Adapt 

func (a FAME) Adapt(cipher *FAMECipher, key *FAMEAttribKeys, pk *FAMEPubKey)

func (*FAME) Decrypt 

func (a *FAME) Decrypt(cipher *FAMECipher, key *FAMEAttribKeys) (*big.Int, error)

Decrypt takes as an input a cipher and an FAMEAttribKeys and tries to decrypt the cipher. This is possible only if the set of possessed attributes (and corresponding keys FAMEAttribKeys) suffices the encryption policy of the cipher. If this is not possible, an error is returned.

func (*FAME) Encrypt 

func (a *FAME) Encrypt(R *big.Int, msp *abe.MSP, pk *FAMEPubKey) (*FAMECipher, error)

Encrypt takes as an input a message msg represented as an element of an elliptic curve, a MSP struct representing the decryption policy, and a public key pk. It returns an encryption of the message. In case of a failed procedure an error is returned. Note that safety of the encryption is only proved if the mapping msp.RowToAttrib from the rows of msp.Mat to attributes is injective.

func (*FAME) GenerateMasterKeys 

func (a *FAME) GenerateMasterKeys() (*FAMEPubKey, *FAMESecKey, error)

GenerateMasterKeys generates a new set of public keys, needed for encrypting data, and master secret keys needed for generating keys for decrypting.

func (*FAME) Hash 

func (a *FAME) Hash(msp *abe.MSP, pk *FAMEPubKey) (*FAMECipher, error)

func (*FAME) KeyGen 

func (a *FAME) KeyGen(gamma []string, sk *FAMESecKey) (*FAMEAttribKeys, error)

GenerateAttribKeys given a set of attributes gamma and the master secret key generates keys that can be used for the decryption of any ciphertext encoded with a policy for which attributes gamma are sufficient.

type FAMEAttribKeys 

type FAMEAttribKeys struct {
	K0        [3]*bn256.G2
	K         [][3]*bn256.G1
	KPrime    [3]*bn256.G1
	AttribToI map[string]int
	SkCH      *big.Int
}

FAMEAttribKeys represents keys corresponding to attributes possessed by an entity and used for decrypting in a FAME scheme.

type FAMECipher 

type FAMECipher struct {
	Ct0     [3]*bn256.G2
	Ct      [][3]*bn256.G1
	CtPrime *bn256.GT
	Msp     *abe.MSP
	Msg     *big.Int
	Hash    *bn256.G2
	RandomR *RandomHashR
}

FAMECipher represents a ciphertext of a FAME scheme.

type FAMEPubKey 

type FAMEPubKey struct {
	PartG2 [2]*bn256.G2
	PartGT [2]*bn256.GT
	PkCH   *bn256.G2
}

FAMEPubKey represents a public key of a FAME scheme.

type FAMESecKey 

type FAMESecKey struct {
	PartInt [4]*big.Int
	PartG1  [3]*bn256.G1
	SkCH    *big.Int
}

FAMESecKey represents a master secret key of a FAME scheme.

type RandomHashR 

type RandomHashR struct {
	Quotient  *big.Int
	Remainder *big.Int
}

type SignedData 

type SignedData struct {
	Data      []byte
	Identity  []byte
	Signature []byte
}

SignedData is used to represent the general triplet required to verify a signature This is intended to be generic across crypto schemes, while most crypto schemes will include the signing identity and a nonce within the Data, this is left to the crypto implementation.

func ConfigUpdateEnvelopeAsSignedData 

func ConfigUpdateEnvelopeAsSignedData(ce *common.ConfigUpdateEnvelope) ([]*SignedData, error)

ConfigUpdateEnvelopeAsSignedData returns the set of signatures for the ConfigUpdateEnvelope as SignedData or an error indicating why this was not possible.

func EnvelopeAsSignedData 

func EnvelopeAsSignedData(env *common.Envelope) ([]*SignedData, error)

EnvelopeAsSignedData returns the signatures for the Envelope as SignedData slice of length 1 or an error indicating why this was not possible.

type Signer 

type Signer interface {
	Sign(msg []byte) ([]byte, error)
	Serialize() ([]byte, error)
}

Signer is the interface needed to sign a transaction

type VerifierBuilder 

type VerifierBuilder func(block *cb.Block) BlockVerifierFunc

Source Files

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Directories

Path Synopsis
Code generated by counterfeiter.
 Code generated by counterfeiter.
Code generated by counterfeiter.
 Code generated by counterfeiter.

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