started to implement the key generator

marshal.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"crypto/rsa"
+	"math/big"
+)
+
+const (
+	DEFAULT_BLOCK_CYPHER      = "AES"
+	DEFAULT_BLOCK_CYPHER_MODE = "CBC"
+	DEFAULT_HASH_FUNCTION     = "SHA256"
+)
+
+type PrivateKey struct {
+	Name        string
+	Description string
+	Type        string // rsa, el gamal,...
+	Version     string
+	Key         interface{}
+	Accept      *AcceptMethods
+}
+
+type PublicKey struct {
+	Name        string
+	Description string
+	Type        string // rsa, el gamal,...
+	Version     string
+	Key         interface{}
+	Accept      *AcceptMethods
+}
+
+type RSAPublicKey struct {
+	N *big.Int
+	E int
+}
+
+type RSAPrivateKey struct {
+	N *big.Int
+	P *big.Int
+	Q *big.Int
+	D *big.Int
+	E int
+}
+
+type AcceptMethods struct {
+	BlocCypher      string
+	BlockCypherMode string
+	HashFunction    string
+}
+
+func GetDefaultRSAPublicKey(publicKey *rsa.PublicKey) *PublicKey {
+	key := &RSAPublicKey{publicKey.N, publicKey.E}
+	accept := &AcceptMethods{
+		DEFAULT_BLOCK_CYPHER,
+		DEFAULT_BLOCK_CYPHER_MODE,
+		DEFAULT_HASH_FUNCTION,
+	}
+	return &PublicKey{Type: "RSA", Version: VERSION, Key: key, Accept: accept}
+}
+
+func GetDefaultRSAPrivateKey(publicKey *rsa.PrivateKey) (*PrivateKey, error) {
+	if err := publicKey.Validate(); err != nil {
+		return nil, err
+	}
+	key := &RSAPrivateKey{publicKey.N, publicKey.Primes[0], publicKey.Primes[1], publicKey.D, publicKey.E}
+	accept := &AcceptMethods{
+		DEFAULT_BLOCK_CYPHER,
+		DEFAULT_BLOCK_CYPHER_MODE,
+		DEFAULT_HASH_FUNCTION,
+	}
+	return &PrivateKey{Type: "RSA", Version: VERSION, Key: key, Accept: accept}, nil
+}