chore: vendor

vendor/github.com/cloudflare/circl/sign/ed448/signapi.go

@@ -0,0 +1,87 @@
+package ed448
+
+import (
+	"crypto/rand"
+	"encoding/asn1"
+
+	"github.com/cloudflare/circl/sign"
+)
+
+var sch sign.Scheme = &scheme{}
+
+// Scheme returns a signature interface.
+func Scheme() sign.Scheme { return sch }
+
+type scheme struct{}
+
+func (*scheme) Name() string          { return "Ed448" }
+func (*scheme) PublicKeySize() int    { return PublicKeySize }
+func (*scheme) PrivateKeySize() int   { return PrivateKeySize }
+func (*scheme) SignatureSize() int    { return SignatureSize }
+func (*scheme) SeedSize() int         { return SeedSize }
+func (*scheme) TLSIdentifier() uint   { return 0x0808 }
+func (*scheme) SupportsContext() bool { return true }
+func (*scheme) Oid() asn1.ObjectIdentifier {
+	return asn1.ObjectIdentifier{1, 3, 101, 113}
+}
+
+func (*scheme) GenerateKey() (sign.PublicKey, sign.PrivateKey, error) {
+	return GenerateKey(rand.Reader)
+}
+
+func (*scheme) Sign(
+	sk sign.PrivateKey,
+	message []byte,
+	opts *sign.SignatureOpts,
+) []byte {
+	priv, ok := sk.(PrivateKey)
+	if !ok {
+		panic(sign.ErrTypeMismatch)
+	}
+	ctx := ""
+	if opts != nil {
+		ctx = opts.Context
+	}
+	return Sign(priv, message, ctx)
+}
+
+func (*scheme) Verify(
+	pk sign.PublicKey,
+	message, signature []byte,
+	opts *sign.SignatureOpts,
+) bool {
+	pub, ok := pk.(PublicKey)
+	if !ok {
+		panic(sign.ErrTypeMismatch)
+	}
+	ctx := ""
+	if opts != nil {
+		ctx = opts.Context
+	}
+	return Verify(pub, message, signature, ctx)
+}
+
+func (*scheme) DeriveKey(seed []byte) (sign.PublicKey, sign.PrivateKey) {
+	privateKey := NewKeyFromSeed(seed)
+	publicKey := make(PublicKey, PublicKeySize)
+	copy(publicKey, privateKey[SeedSize:])
+	return publicKey, privateKey
+}
+
+func (*scheme) UnmarshalBinaryPublicKey(buf []byte) (sign.PublicKey, error) {
+	if len(buf) < PublicKeySize {
+		return nil, sign.ErrPubKeySize
+	}
+	pub := make(PublicKey, PublicKeySize)
+	copy(pub, buf[:PublicKeySize])
+	return pub, nil
+}
+
+func (*scheme) UnmarshalBinaryPrivateKey(buf []byte) (sign.PrivateKey, error) {
+	if len(buf) < PrivateKeySize {
+		return nil, sign.ErrPrivKeySize
+	}
+	priv := make(PrivateKey, PrivateKeySize)
+	copy(priv, buf[:PrivateKeySize])
+	return priv, nil
+}