Initial commit - test client

client/client.go

@@ -0,0 +1,39 @@
+package client
+
+import (
+	"crypto"
+	"crypto/ecdsa"
+	"crypto/ed25519"
+	"crypto/rsa"
+	"fmt"
+	"net/http"
+	"reflect"
+
+	"github.com/common-fate/httpsig"
+	"github.com/common-fate/httpsig/alg_ecdsa"
+	"github.com/common-fate/httpsig/alg_ed25519"
+	"github.com/common-fate/httpsig/alg_rsa"
+	"github.com/common-fate/httpsig/signer"
+)
+
+func GetSigningClient(key crypto.PrivateKey, keyId string) (*http.Client, error) {
+	var alg signer.Algorithm
+
+	switch p := key.(type) {
+	case *rsa.PrivateKey:
+		alg = alg_rsa.NewRSAPKCS256Signer(p)
+	case *ed25519.PrivateKey:
+		alg = alg_ed25519.Ed25519{PrivateKey: *p}
+	case *ecdsa.PrivateKey:
+		alg = alg_ecdsa.NewP256Signer(p)
+	default:
+		return nil, fmt.Errorf("type is unknown: %s", reflect.TypeOf(key))
+	}
+
+	client := httpsig.NewClient(httpsig.ClientOpts{
+		KeyID: keyId,
+		Alg:   alg,
+	})
+
+	return client, nil
+}