2 files changed, 5 insertions, 4 deletions
diff --git a/src/ts/0x.js.ts b/src/ts/0x.js.ts
index 3b16b643b..dd67c49a0 100644
--- a/src/ts/0x.js.ts
+++ b/src/ts/0x.js.ts
@@ -11,7 +11,8 @@ export interface ECSignature {
 
 export class ZeroEx {
     /**
-     * Checks if the signature is valid
+     * Verifies that the elliptic curve signature `signature` was generated
+     * by signing `data` with the private key corresponding to the `signer` address.
      */
     public static isValidSignature(data: string, signature: ECSignature, signer: ETHAddressHex): boolean {
         const dataBuff = ethUtil.toBuffer(data);
diff --git a/src/ts/globals.d.ts b/src/ts/globals.d.ts
index 1c3cbf47d..0f7391b39 100644
--- a/src/ts/globals.d.ts
+++ b/src/ts/globals.d.ts
@@ -1,4 +1,4 @@
-declare type PubKey = string;
+declare type ETHPublicKey = string;
 declare type ETHAddressHex = string;
 declare type ETHAddressBuff = Buffer;
 
@@ -6,6 +6,6 @@ declare module 'ethereumjs-util' {
     const toBuffer: (data: string) => Buffer;
     const hashPersonalMessage: (msg: Buffer) => Buffer;
     const bufferToHex: (buff: Buffer) => string;
-    const ecrecover: (msgHashBuff: Buffer, v: number, r: Buffer, s: Buffer) => PubKey;
-    const pubToAddress: (pubKey: PubKey) => ETHAddressBuff;
+    const ecrecover: (msgHashBuff: Buffer, v: number, r: Buffer, s: Buffer) => ETHPublicKey;
+    const pubToAddress: (pubKey: ETHPublicKey) => ETHAddressBuff;
 }