key: finish key encoding and start cert

pkg/pkcs15/private_key.go

@@ -0,0 +1,24 @@
+package pkcs15
+
+import "apc-p15-tool/pkg/tools/asn1obj"
+
+// privateKeyObject returns the ASN.1 representation of a private key
+func (p15 *pkcs15KeyCert) privateKeyObject() []byte {
+	// ensure all expected vals are available
+	p15.key.Precompute()
+
+	pkey := asn1obj.Sequence([][]byte{
+		// P
+		asn1obj.IntegerExplicitValue(3, p15.key.Primes[0]),
+		// Q
+		asn1obj.IntegerExplicitValue(4, p15.key.Primes[1]),
+		// Dp
+		asn1obj.IntegerExplicitValue(5, p15.key.Precomputed.Dp),
+		// Dq
+		asn1obj.IntegerExplicitValue(6, p15.key.Precomputed.Dq),
+		// Qinv
+		asn1obj.IntegerExplicitValue(7, p15.key.Precomputed.Qinv),
+	})
+
+	return pkey
+}