ECPrivateKey

public class ECPrivateKey : CustomStringConvertible

An Elliptic Curve private key

Initializers


                    
                    
                    init(domain:s:)

Creates a private key

Throws

An exception if s < 1 or s >= the domain order

Declaration

Swift

public init(domain: Domain, s: BInt) throws

Parameters

`domain`	The domain the key belongs to
`s`	The secret key value


                    
                    
                    init(der:)

Creates a private key from its DER encoding

Throws

An exception if the DER encoding is wrong

Declaration

Swift

public convenience init(der: Bytes) throws

Parameters

der

The DER encoding of the key


                    
                    
                    init(pem:)

Creates a private key from its PEM encoding

Throws

An exception if the PEM encoding is wrong

Declaration

Swift

public convenience init(pem: String) throws

Parameters

pem

The PEM encoding of the key

Stored Properties

domain
The domain the key belongs to
Declaration
Swift

public let domain: Domain
s
The private value - a integer number
Declaration
Swift

public let s: BInt

Computed Properties

asn1
The ASN1 encoding of self
Declaration
Swift

public var asn1: ASN1 { get }
pem
The PEM base 64 encoding of self
Declaration
Swift

public var pem: String { get }
description
A textual representation of the ASN1 encoding of self
Declaration
Swift

public var description: String { get }

Instance Methods


                    
                    
                    sign(msg:deterministic:)

Signs a byte array message with ECDSA

Declaration

Swift

public func sign(msg: Bytes, deterministic: Bool = false) -> ECSignature

Parameters

`msg`	The message to sign
`deterministic`	If true generate a deterministic signature according to RFC-6979, if false generate a non-deterministic signature - false is default

Return Value

The signature


                    
                    
                    sign(msg:deterministic:)

Signs a Data message with ECDSA

Declaration

Swift

public func sign(msg: Data, deterministic: Bool = false) -> ECSignature

Parameters

`msg`	The message to sign
`deterministic`	If true generate a deterministic signature according to RFC-6979, if false generate a non-deterministic signature - false is default

Return Value

The signature


                    
                    
                    decrypt(msg:cipher:mode:)

Decrypts a byte array message with ECIES

Throws

An exception if the message authentication fails or the message is too short

Declaration

Swift

public func decrypt(msg: Bytes, cipher: AESCipher, mode: BlockMode = .GCM) throws -> Bytes

Parameters

`msg`	The bytes to decrypt
`cipher`	The AES cipher to use
`mode`	The block mode to use - GCM is default

Return Value

The decrypted message


                    
                    
                    decrypt(msg:cipher:mode:)

Decrypts a Data message with ECIES

Throws

An exception if the message authentication fails or the message is too short

Declaration

Swift

public func decrypt(msg: Data, cipher: AESCipher, mode: BlockMode = .GCM) throws -> Data

Parameters

`msg`	The data to decrypt
`cipher`	The AES cipher to use
`mode`	The block mode to use - GCM is default

Return Value

The decrypted message


                    
                    
                    keyAgreement(pubKey:length:md:sharedInfo:cofactor:)

Constructs a shared secret key using Diffie-Hellman key agreement - please refer [SEC 1] section 3.3.1

Throws

An exception if this and pubKey do not belong to the same domain or length is negative

Declaration

Swift

public func keyAgreement(pubKey: ECPublicKey, length: Int, md: MessageDigestAlgorithm, sharedInfo: Bytes, cofactor: Bool = false) throws -> Bytes

Parameters

`pubKey`	The other party’s public key
`length`	The required length of the shared secret
`md`	The message digest algorithm to use
`sharedInfo`	Information shared with the other party
`cofactor`	Use cofactor version - false is default

Return Value

A byte array which is the shared secret key