1 files changed, 106 insertions, 0 deletions
diff --git a/vendor/go.mau.fi/libsignal/ratchet/ReceiverParameters.go b/vendor/go.mau.fi/libsignal/ratchet/ReceiverParameters.go
new file mode 100644
index 00000000..97822d19
--- /dev/null
+++ b/vendor/go.mau.fi/libsignal/ratchet/ReceiverParameters.go
@@ -0,0 +1,106 @@
+package ratchet
+
+import (
+	"go.mau.fi/libsignal/ecc"
+	"go.mau.fi/libsignal/keys/identity"
+)
+
+// NewReceiverParameters creates a structure with all the keys needed to construct
+// a new session when we are receiving a message from a user for the first time.
+func NewReceiverParameters(ourIdentityKey *identity.KeyPair, ourSignedPreKey *ecc.ECKeyPair,
+	ourOneTimePreKey *ecc.ECKeyPair, ourRatchetKey *ecc.ECKeyPair,
+	theirBaseKey ecc.ECPublicKeyable, theirIdentityKey *identity.Key) *ReceiverParameters {
+
+	receiverParams := ReceiverParameters{
+		ourIdentityKeyPair: ourIdentityKey,
+		ourSignedPreKey:    ourSignedPreKey,
+		ourOneTimePreKey:   ourOneTimePreKey,
+		ourRatchetKey:      ourRatchetKey,
+		theirBaseKey:       theirBaseKey,
+		theirIdentityKey:   theirIdentityKey,
+	}
+
+	return &receiverParams
+}
+
+// NewEmptyReceiverParameters creates an empty structure with the receiver parameters
+// needed to create a session. You should use the `set` functions to set all the
+// necessary keys needed to build a session.
+func NewEmptyReceiverParameters() *ReceiverParameters {
+	receiverParams := ReceiverParameters{}
+
+	return &receiverParams
+}
+
+// ReceiverParameters describes the session parameters if we are receiving
+// a message from someone for the first time. These parameters are used as
+// the basis for deriving a shared secret with the sender.
+type ReceiverParameters struct {
+	ourIdentityKeyPair *identity.KeyPair
+	ourSignedPreKey    *ecc.ECKeyPair
+	ourOneTimePreKey   *ecc.ECKeyPair
+	ourRatchetKey      *ecc.ECKeyPair
+
+	theirBaseKey     ecc.ECPublicKeyable
+	theirIdentityKey *identity.Key
+}
+
+// OurIdentityKeyPair returns the identity key of the receiver.
+func (r *ReceiverParameters) OurIdentityKeyPair() *identity.KeyPair {
+	return r.ourIdentityKeyPair
+}
+
+// OurSignedPreKey returns the signed prekey of the receiver.
+func (r *ReceiverParameters) OurSignedPreKey() *ecc.ECKeyPair {
+	return r.ourSignedPreKey
+}
+
+// OurOneTimePreKey returns the one time prekey of the receiver.
+func (r *ReceiverParameters) OurOneTimePreKey() *ecc.ECKeyPair {
+	return r.ourOneTimePreKey
+}
+
+// OurRatchetKey returns the ratchet key of the receiver.
+func (r *ReceiverParameters) OurRatchetKey() *ecc.ECKeyPair {
+	return r.ourRatchetKey
+}
+
+// TheirBaseKey returns the base key of the sender.
+func (r *ReceiverParameters) TheirBaseKey() ecc.ECPublicKeyable {
+	return r.theirBaseKey
+}
+
+// TheirIdentityKey returns the identity key of the sender.
+func (r *ReceiverParameters) TheirIdentityKey() *identity.Key {
+	return r.theirIdentityKey
+}
+
+// SetOurIdentityKeyPair sets the identity key of the receiver.
+func (r *ReceiverParameters) SetOurIdentityKeyPair(ourIdentityKey *identity.KeyPair) {
+	r.ourIdentityKeyPair = ourIdentityKey
+}
+
+// SetOurSignedPreKey sets the signed prekey of the receiver.
+func (r *ReceiverParameters) SetOurSignedPreKey(ourSignedPreKey *ecc.ECKeyPair) {
+	r.ourSignedPreKey = ourSignedPreKey
+}
+
+// SetOurOneTimePreKey sets the one time prekey of the receiver.
+func (r *ReceiverParameters) SetOurOneTimePreKey(ourOneTimePreKey *ecc.ECKeyPair) {
+	r.ourOneTimePreKey = ourOneTimePreKey
+}
+
+// SetOurRatchetKey sets the ratchet key of the receiver.
+func (r *ReceiverParameters) SetOurRatchetKey(ourRatchetKey *ecc.ECKeyPair) {
+	r.ourRatchetKey = ourRatchetKey
+}
+
+// SetTheirBaseKey sets the base key of the sender.
+func (r *ReceiverParameters) SetTheirBaseKey(theirBaseKey ecc.ECPublicKeyable) {
+	r.theirBaseKey = theirBaseKey
+}
+
+// SetTheirIdentityKey sets the identity key of the sender.
+func (r *ReceiverParameters) SetTheirIdentityKey(theirIdentityKey *identity.Key) {
+	r.theirIdentityKey = theirIdentityKey
+}