fix(core): update

ts/smartcrypto.classes.publickey.ts

@@ -0,0 +1,21 @@
+import * as plugins from './smartcrypto.plugins';
+
+export class PublicKey {
+  // STATIC
+  public static createFromPrivateKey(pemString: string) {
+    const privateKey = plugins.nodeForge.pki.publicKeyFromPem(pemString);
+    return new PublicKey(privateKey);
+  }
+
+
+  // INSTANCE
+  public forgePublicKey: plugins.nodeForge.pki.PublicKey;
+
+  constructor (publicKeyArg: plugins.nodeForge.pki.PublicKey) {
+    this.forgePublicKey = publicKeyArg;
+  }
+
+  public toPemString(): string {
+    return plugins.nodeForge.pki.publicKeyToPem(this.forgePublicKey);
+  }
+}