diff --git a/types/asn1/asn1-tests.ts b/types/asn1/asn1-tests.ts
new file mode 100644
index 0000000000..f37541b03e
--- /dev/null
+++ b/types/asn1/asn1-tests.ts
@@ -0,0 +1,88 @@
+import { Ber, BerReader, BerWriter } from 'asn1';
+
+let buf: Buffer = Buffer.alloc(0);
+let bool = false;
+let str = '';
+let num = 0;
+let numOrNull: number | null = 0;
+const roStrArray: ReadonlyArray<string> = [str];
+
+const reader = new BerReader(buf);
+numOrNull = reader.peek();
+bool = reader.readBoolean();
+numOrNull = reader.readByte(bool);
+num = reader.readEnumeration();
+num = reader.readInt();
+num = reader.readLength();
+num = reader.readLength(num);
+str = reader.readOID();
+str = reader.readOID(num);
+numOrNull = reader.readSequence();
+numOrNull = reader.readSequence(num);
+str = reader.readString();
+str = reader.readString(num);
+buf = reader.readString(num, bool);
+num = reader._readTag();
+num = reader._readTag(num);
+
+let writer = new BerWriter();
+writer = new BerWriter({
+	size: num,
+	growthFactor: num,
+});
+
+buf = writer.buffer;
+buf = writer._buf;
+num = writer._size;
+num = writer._offset;
+
+writer.endSequence();
+writer.startSequence();
+writer.startSequence(num);
+writer.writeBoolean(bool);
+writer.writeBoolean(bool, num);
+writer.writeBuffer(buf, num);
+writer.writeByte(num);
+writer.writeEnumeration(num);
+writer.writeEnumeration(num, num);
+writer.writeInt(num);
+writer.writeInt(num, num);
+writer.writeLength(num);
+writer.writeNull();
+writer.writeOID(str, num);
+writer.writeString(str);
+writer.writeString(str, num);
+writer.writeStringArray(roStrArray);
+writer._ensure(num);
+
+num = Ber.BMPString;
+num = Ber.BitString;
+num = Ber.Boolean;
+num = Ber.CharacterString;
+num = Ber.Constructor;
+num = Ber.Context;
+num = Ber.EOC;
+num = Ber.Enumeration;
+num = Ber.External;
+num = Ber.GeneralString;
+num = Ber.GeneralizedTime;
+num = Ber.GraphicString;
+num = Ber.IA5String;
+num = Ber.Integer;
+num = Ber.Null;
+num = Ber.NumericString;
+num = Ber.OID;
+num = Ber.ObjectDescriptor;
+num = Ber.OctetString;
+num = Ber.PDV;
+num = Ber.PrintableString;
+num = Ber.Real;
+num = Ber.RelativeOID;
+num = Ber.Sequence;
+num = Ber.Set;
+num = Ber.T61String;
+num = Ber.UTCTime;
+num = Ber.UniversalString;
+num = Ber.Utf8String;
+num = Ber.VideotexString;
+num = Ber.VisibleString;
diff --git a/types/asn1/index.d.ts b/types/asn1/index.d.ts
new file mode 100644
index 0000000000..3f7de44af8
--- /dev/null
+++ b/types/asn1/index.d.ts
@@ -0,0 +1,126 @@
+// Type definitions for asn1 0.2
+// Project: https://github.com/joyent/node-asn1
+// Definitions by: Jim Geurts <https://github.com/jgeurts>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.3
+/// <reference types="node" />
+
+export class BerReader {
+    readonly buffer: Buffer;
+    readonly offset: number;
+    readonly length: number;
+    readonly remain: number;
+    readonly _buf: Buffer;
+    _size: number;
+    _offset: number;
+
+    constructor(data: Buffer);
+
+    peek(): number | null;
+    readBoolean(): boolean;
+    readByte(peek: boolean): number | null;
+    readEnumeration(): number;
+    readInt(): number;
+    readLength(offset?: number): number;
+    readOID(tag?: number): string;
+    readSequence(tag?: number): number | null;
+    readString(tag?: number): string;
+    readString(tag: number, retbuf: boolean): Buffer;
+    _readTag(tag?: number): number;
+}
+
+export class BerWriter {
+    readonly buffer: Buffer;
+    readonly _buf: Buffer;
+    readonly _size: number;
+    _offset: number;
+
+    constructor(options?: {
+        size: number;
+        growthFactor: number;
+    });
+
+    endSequence(): void;
+    startSequence(tag?: number): void;
+    writeBoolean(b: boolean, tag?: number): void;
+    writeBuffer(buf: Buffer, tag: number): void;
+    writeByte(b: number): void;
+    writeEnumeration(i: number, tag?: number): void;
+    writeInt(i: number, tag?: number): void;
+    writeLength(len: number): void;
+    writeNull(): void;
+    writeOID(s: string, tag: number): void;
+    writeString(s: string, tag?: number): void;
+    writeStringArray(strings: ReadonlyArray<string>): void;
+    _ensure(length: number): void;
+}
+
+export namespace Ber {
+    const BMPString: number;
+    const BitString: number;
+    const Boolean: number;
+    const CharacterString: number;
+    const Constructor: number;
+    const Context: number;
+    const EOC: number;
+    const Enumeration: number;
+    const External: number;
+    const GeneralString: number;
+    const GeneralizedTime: number;
+    const GraphicString: number;
+    const IA5String: number;
+    const Integer: number;
+    const Null: number;
+    const NumericString: number;
+    const OID: number;
+    const ObjectDescriptor: number;
+    const OctetString: number;
+    const PDV: number;
+    const PrintableString: number;
+    const Real: number;
+    const RelativeOID: number;
+    const Sequence: number;
+    const Set: number;
+    const T61String: number;
+    const UTCTime: number;
+    const UniversalString: number;
+    const Utf8String: number;
+    const VideotexString: number;
+    const VisibleString: number;
+}
+/*
+declare enum BerType {
+  EOC = 0,
+  Boolean = 1,
+  Integer = 2,
+  BitString = 3,
+  OctetString = 4,
+  Null = 5,
+  OID = 6,
+  ObjectDescriptor = 7,
+  External = 8,
+  Real = 9, // float
+  Enumeration = 10,
+  PDV = 11,
+  Utf8String = 12,
+  RelativeOID = 13,
+  Sequence = 16,
+  Set = 17,
+  NumericString = 18,
+  PrintableString = 19,
+  T61String = 20,
+  VideotexString = 21,
+  IA5String = 22,
+  UTCTime = 23,
+  GeneralizedTime = 24,
+  GraphicString = 25,
+  VisibleString = 26,
+  GeneralString = 28,
+  UniversalString = 29,
+  CharacterString = 30,
+  BMPString = 31,
+  Constructor = 32,
+  Context = 128,
+}
+
+*/
diff --git a/types/asn1/tsconfig.json b/types/asn1/tsconfig.json
new file mode 100644
index 0000000000..fd1bdc45d9
--- /dev/null
+++ b/types/asn1/tsconfig.json
@@ -0,0 +1,25 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "noUnusedParameters": true,
+
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "asn1-tests.ts"
+    ]
+}
\ No newline at end of file
diff --git a/types/asn1/tslint.json b/types/asn1/tslint.json
new file mode 100644
index 0000000000..e60c15844f
--- /dev/null
+++ b/types/asn1/tslint.json
@@ -0,0 +1,3 @@
+{
+    "extends": "dtslint/dt.json"
+}
\ No newline at end of file