Module: "signature"

Index

Interfaces

ECDSASignature

Functions

ecrecover
ecsign
fromRpcSig
hashPersonalMessage
isValidSignature
toRpcSig

Functions

`Const` ecrecover

▸ ecrecover(msgHash: Buffer, v: number, r: Buffer, s: Buffer, chainId?: undefined | number): Buffer

Defined in signature.ts:37

ECDSA public key recovery from signature.

Parameters:

Name	Type
`msgHash`	Buffer
`v`	number
`r`	Buffer
`s`	Buffer
`chainId?`	undefined \| number

Returns: Buffer

Recovered public key

`Const` ecsign

▸ ecsign(msgHash: Buffer, privateKey: Buffer, chainId?: undefined | number): ECDSASignature

Defined in signature.ts:16

Returns the ECDSA signature of a message hash.

Parameters:

Name	Type
`msgHash`	Buffer
`privateKey`	Buffer
`chainId?`	undefined \| number

Returns: ECDSASignature

`Const` fromRpcSig

▸ fromRpcSig(sig: string): ECDSASignature

Defined in signature.ts:71

Convert signature format of the eth_sign RPC method to signature parameters NOTE: all because of a bug in geth: ethereum/go-ethereum#2053

Parameters:

Name	Type
`sig`	string

Returns: ECDSASignature

`Const` hashPersonalMessage

▸ hashPersonalMessage(message: Buffer): Buffer

Defined in signature.ts:137

Returns the keccak-256 hash of message, prefixed with the header used by the eth_sign RPC call. The output of this function can be fed into ecsign to produce the same signature as the eth_sign call for a given message, or fed to ecrecover along with a signature to recover the public key used to produce the signature.

Parameters:

Name	Type
`message`	Buffer

Returns: Buffer

`Const` isValidSignature

▸ isValidSignature(v: number, r: Buffer, s: Buffer, homesteadOrLater: boolean, chainId?: undefined | number): boolean

Defined in signature.ts:96

Validate a ECDSA signature.

Parameters:

Name	Type	Default	Description
`v`	number	-	-
`r`	Buffer	-	-
`s`	Buffer	-	-
`homesteadOrLater`	boolean	true	Indicates whether this is being used on either the homestead hardfork or a later one
`chainId?`	undefined \| number	-	-

Returns: boolean

`Const` toRpcSig

▸ toRpcSig(v: number, r: Buffer, s: Buffer, chainId?: undefined | number): string

Defined in signature.ts:57

Convert signature parameters into the format of eth_sign RPC method.

Parameters:

Name	Type
`v`	number
`r`	Buffer
`s`	Buffer
`chainId?`	undefined \| number

Returns: string

Signature

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