diff --git a/types/ssh2-streams/index.d.ts b/types/ssh2-streams/index.d.ts
index 54d6359538..8b2530edb0 100644
--- a/types/ssh2-streams/index.d.ts
+++ b/types/ssh2-streams/index.d.ts
@@ -1686,23 +1686,17 @@ export interface Stats extends Attributes {
 }
 
 export namespace utils {
-    export function parseKey(keyData: string | Buffer): ParsedKey | Error;
-    export function genPublicKey(privKeyInfo: ParsedKey): ParsedKey;
-    export function decryptKey(privKeyInfo: ParsedKey, passphrase: string): void;
+    export function parseKey(keyData: string | Buffer, passphrase?: string): ParsedKey | {}[];
 }
 
 export interface ParsedKey {
-    fulltype: string;
     type: string;
-    extra: string;
     comment: string;
-    encryption: string;
-    private: Buffer;
-    privateOrig: Buffer;
-    public: Buffer;
-    publicOrig: Buffer;
-    ppk?: boolean;
-    privateMAC?: string;
+    getPrivatePEM(): string;
+    getPublicPEM(): string;
+    getPublicSSH(): string;
+    sign(data: string | Buffer): Buffer | Error;
+    verify(data: string | Buffer, signature: Buffer): boolean | Error;
 }
 
 export interface ReadFileOptions {
diff --git a/types/ssh2-streams/ssh2-streams-tests.ts b/types/ssh2-streams/ssh2-streams-tests.ts
index 7fd73756d5..c813d4eeb4 100644
--- a/types/ssh2-streams/ssh2-streams-tests.ts
+++ b/types/ssh2-streams/ssh2-streams-tests.ts
@@ -87,9 +87,7 @@ server.forwardedTcpip(0, 0, 0, { bindAddr: "bindAddr", bindPort: 8080, remoteAdd
 server.x11(0, 0, 0, { originAddr: "originAddr", originPort: 0 });
 server.openssh_forwardedStreamLocal(0, 0, 0, { socketPath: "socketPath" });
 
-const maybeParsedKey = ssh2.utils.parseKey("keyData");
-ssh2.utils.decryptKey(parsedKey, "passphrase");
-const publicKey = ssh2.utils.genPublicKey(parsedKey);
+const maybeParsedKey = ssh2.utils.parseKey("keyData", "passphrase");
 
 
 declare const attrs: ssh2.Attributes;
diff --git a/types/ssh2/ssh2-tests.ts b/types/ssh2/ssh2-tests.ts
index aa599498b5..87a0ea713f 100644
--- a/types/ssh2/ssh2-tests.ts
+++ b/types/ssh2/ssh2-tests.ts
@@ -313,7 +313,8 @@ var buffersEqual = require('buffer-equal-constant-time'),
     //ssh2 = require('ssh2'),
     utils = ssh2.utils;
 
-var pubKey = utils.genPublicKey(utils.parseKey(fs.readFileSync('user.pub')) as ssh2_streams.ParsedKey);
+var pubKey = utils.parseKey(fs.readFileSync('user.pub')) as ssh2_streams.ParsedKey;
+var pubKeySSH = Buffer.from(pubKey.getPublicSSH());
 
 new ssh2.Server({
     hostKeys: [fs.readFileSync('host.key')]
@@ -326,15 +327,14 @@ new ssh2.Server({
             && ctx.password === 'bar')
             ctx.accept();
         else if (ctx.method === 'publickey'
-            && ctx.key.algo === pubKey.fulltype
-            && buffersEqual(ctx.key.data, pubKey.public)) {
+            && ctx.key.algo === pubKey.type
+            && buffersEqual(ctx.key.data, pubKeySSH)) {
             if (ctx.signature) {
-                var verifier = crypto.createVerify(ctx.sigAlgo);
-                verifier.update(ctx.blob);
-                if (verifier.verify(pubKey.publicOrig.toString("utf8"), ctx.signature))
+                if (pubKey.verify(ctx.blob, ctx.signature)) {
                     ctx.accept();
-                else
+                } else {
                     ctx.reject();
+                }
             } else {
                 // if no signature present, that means the client is just checking
                 // the validity of the given public key