SecretNET Namespace

IAminoSigner Interface

ISecretNetworkClient Interface

IWallet Interface

SecretNetworkClient Class

WalletSignType Enumeration

SecretNET.AccessControl Namespace

ContractNotInPermitException Class

CreateViewingKeyOptions_Payload Class

CreateViewingKeyRequest Class

CreateViewingKeyResponse Class

CreateViewingKeyResponse_Result Class

PermissionNotInPermitException Class

PermissionType Enumeration

Permit_Params Class

PermitException Class

PermitSigner Class

SetViewingKeyRequest Class

SetViewingKeyRequest_Payload Class

SetViewingKeyResponse Class

SetViewingKeyResponse_Result Class

SignerIsNotAddressException Class

WithPermitRequest Class

WithPermitRequest_Payload Class

SecretNET.Common Namespace

ApprovalMsgInfo Class

CreateClientOptions Class

CreateWalletOptions Class

SecretEncryptionUtils Class

TransactionApprovalData Class

UserApprovalDecision Class

SecretNET.Common.Storage Namespace

AesEncryptedFileStorage Class

HotPrivateKeyStorageBase Class

InMemoryOnlyStorage Class

IPrivateKeyStorage Interface

MauiSecureStorage Class

PrivateKeyStorageEncryptionEnum Enumeration

SecretNET.Crypto Namespace

DeriveKey Method

Expand Method (HashAlgorithmName, Byte[], Int32, Nullable(Byte)[])

Expand Method (HashAlgorithmName, ReadOnlySpan(Byte), Span(Byte), ReadOnlySpan(Byte))

IPubKey Interface

IRandom Interface

RandomNumberGeneratorRandom Class

RandomUtils Class

SecretNET.Crypto.BIP39 Namespace

HardcodedWordlistSource Class

IWordlistSource Interface

Language Enumeration

WordCount Enumeration

SecretNET.Crypto.Miscreant Namespace

ISIVLike Interface

SecretNET.Crypto.Secp256k1 Namespace

ECMultiImplementation Enumeration

FEStorage Structure

GEStorage Structure

HMACSHA256 Class

MultBatchOptions Class

Scalar Structure

SecpECDSASignature Class

SecretNET.Tx Namespace

CancelSoftwareUpgradeProposal Class

ClientUpdateProposal Class

CommunityPoolSpendProposal Class

ComputeTx Class

DistributionTx Class

EvidenceTx Class

FeegrantTx Class

IbcChannelTx Class

IbcClientTx Class

IbcConnectionTx Class

IbcTransferTx Class

MsgExecuteContract Class

MsgExecuteContract(T) Class

MsgExecuteContractBase Class

MsgGrantAuthorization Class

MsgInstantiateContract Class

MsgStoreCode Class

MsgTypeNames Class

ParameterChangeProposal Class

ProposalBaseClass Class

SingleSecretTx(T) Class

SlashingTx Class

SoftwareUpgradeProposal Class

StakingTx Class

TextProposal Class

TxOptions Class

TxOptionsDefaults Class

TxResultCode Enumeration

UpgradeProposal Class

VestingTx Class

Hkdf..::..Expand Method (HashAlgorithmName, array<Byte>[]()[][], Int32, array<Nullable<(Of <(<'Byte>)>)>>[]()[][])

Expands the provided pseudorandom key into an output keying material of the desired length using optional context information.

Namespace: SecretNET.Crypto
Assembly: SecretNET (in SecretNET.dll)

Syntax

public static byte[] Expand(
	HashAlgorithmName hashAlgorithmName,
	byte[] prk,
	int outputLength,
	Nullable<byte>[] info
)

Parameters

hashAlgorithmName: Type: HashAlgorithmName
The hash algorithm to be used by the HMAC primitive. Supported hash functions: MD5, SHA1, SHA256, SHA384, SHA512.

prk: Type: array<Byte>[]()[][]
The pseudorandom key. Must be at least as long as the output of the hash algorithm, i.e.: MD5 - 16 bytes, SHA1 - 20, SHA256 - 32, SHA384 - 48, SHA512 - 64.

outputLength: Type: Int32
The desired length of the generated output keying material in bytes. Minimum value - 1. Maximum value - 255 times the size of the hash algorithm output, i.e.: MD5 - 4080, SHA1 - 5100, SHA256 - 8160, SHA384 - 12240, SHA512 - 16320.

info: Type: array<Nullable<(Of <(<'Byte>)>)>>[]()[][]
The optional context-specific information. If the argument is omitted or its value is set to null, the expansion is performed without context information.

Return Value

The output keying material.

Exceptions

Exception	Condition
[ArgumentNullException]	The argument prk is null.
[ArgumentOutOfRangeException]	The hash algorithm specified in the parameter hashAlgorithmName is not supported or the value of the parameter outputLength is invalid (either too small or too large).
[ArgumentException]	The length of the prk is less than the length of the output of the hash algorithm.

See Also

Expand Overload

SecretNET.Crypto Namespace