EccRecoverKey Class Reference


                    
                    
                    init()

Default init.

Declaration

Swift

public init()

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                    recoverPublicKey(privateKey:curve:)

Recover a public key from the private key.

Throws

If the public key cannot be recovered, or another error is encountered.

Declaration

Swift

public class func recoverPublicKey(privateKey: Data, curve: EllipticCurveType) throws -> Data

Parameters

`privateKey`	The private key.
`curve`	The curve `K1` or `R1`.

Return Value

The public key.

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                    recoverPublicKey(signatureDer:message:recid:curve:)

Recover a public key from a signature, message.

Throws

If unable to recover the target public key.

Declaration

Swift

public class func recoverPublicKey(signatureDer: Data,
                                    message: Data,
                                    recid: Int,
                                    curve: EllipticCurveType = .r1) throws -> Data

Parameters

`signatureDer`	The signature in der format.
`message`	The message.
`recid`	The recovery id (0-3).
`curve`	The curve `K1` or `R1`.

Return Value

The public key.

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                    recid(signatureDer:message:targetPublicKey:curve:)

Get the recovery id (recid) for a signature, message and target public key.

Throws

If none of the possible recids recover the target public key.

Declaration

Swift

public class func recid(signatureDer: Data, message: Data, targetPublicKey: Data, curve: EllipticCurveType = .r1) throws -> Int

Parameters

`signatureDer`	The signature in der format.
`message`	The message.
`targetPublicKey`	The target public key.
`curve`	The curve `K1` or `R1`.

Return Value

The recovery id (0-3).

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