Source file src/github.com/cloudflare/circl/dh/curve4q/curve4Q.go

Documentation: github.com/cloudflare/circl/dh/curve4q

     1  package curve4q
     2  
     3  import "github.com/cloudflare/circl/ecc/fourq"
     4  
     5  // Size is the size in bytes of keys.
     6  const Size = 32
     7  
     8  // Key represents a public or private key of FourQ.
     9  type Key [Size]byte
    10  
    11  // KeyGen calculates a public key k from a secret key.
    12  func KeyGen(public, secret *Key) {
    13  	var P fourq.Point
    14  	P.ScalarBaseMult((*[Size]byte)(secret))
    15  	P.Marshal((*[Size]byte)(public))
    16  }
    17  
    18  // Shared calculates a shared key k from Alice's secret and Bob's public key.
    19  // Returns true on success.
    20  func Shared(shared, secret, public *Key) bool {
    21  	var P, Q fourq.Point
    22  	ok := P.Unmarshal((*[Size]byte)(public))
    23  	Q.ScalarMult((*[Size]byte)(secret), &P)
    24  	Q.Marshal((*[Size]byte)(shared))
    25  	ok = ok && Q.IsOnCurve()
    26  	return ok
    27  }
    28  

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