diff --git a/README.md b/README.md
index a3356dd..1b97a23 100644
--- a/README.md
+++ b/README.md
@@ -302,13 +302,12 @@ const shared = secp256k1.getSharedSecret(key, someonesPubkey);
 export type CurveFn = {
   CURVE: ReturnType<typeof validateOpts>;
   getPublicKey: (privateKey: PrivKey, isCompressed?: boolean) => Uint8Array;
-  getSharedSecret: (privateA: PrivKey, publicB: PubKey, isCompressed?: boolean) => Uint8Array;
+  getSharedSecret: (privateA: PrivKey, publicB: Hex, isCompressed?: boolean) => Uint8Array;
   sign: (msgHash: Hex, privKey: PrivKey, opts?: SignOpts) => SignatureType;
-  signUnhashed: (msg: Uint8Array, privKey: PrivKey, opts?: SignOpts) => SignatureType;
   verify: (
     signature: Hex | SignatureType,
     msgHash: Hex,
-    publicKey: PubKey,
+    publicKey: Hex,
     opts?: { lowS?: boolean }
   ) => boolean;
   Point: PointConstructor;
diff --git a/src/abstract/edwards.ts b/src/abstract/edwards.ts
index 7acb010..5f24799 100644
--- a/src/abstract/edwards.ts
+++ b/src/abstract/edwards.ts
@@ -419,7 +419,7 @@ export function twistedEdwards(curveDef: CurveType): CurveFn {
   const wnaf = wNAF(ExtendedPoint, CURVE.nByteLength * 8);
 
   function assertExtPoint(other: unknown) {
-    if (!(other instanceof ExtendedPoint)) throw new TypeError('ExtendedPoint expected');
+    if (!(other instanceof ExtendedPoint)) throw new Error('ExtendedPoint expected');
   }
   // Little-endian SHA512 with modulo n
   function modnLE(hash: Uint8Array): bigint {
diff --git a/src/abstract/utils.ts b/src/abstract/utils.ts
index 5d0a6aa..d34210f 100644
--- a/src/abstract/utils.ts
+++ b/src/abstract/utils.ts
@@ -84,14 +84,14 @@ export function numberToHexUnpadded(num: number | bigint): string {
 }
 
 export function hexToNumber(hex: string): bigint {
-  if (!str(hex)) throw new TypeError('hexToNumber: expected string, got ' + typeof hex);
+  if (!str(hex)) throw new Error('hexToNumber: expected string, got ' + typeof hex);
   // Big Endian
   return BigInt(`0x${hex}`);
 }
 
 // Caching slows it down 2-3x
 export function hexToBytes(hex: string): Uint8Array {
-  if (!str(hex)) throw new TypeError('hexToBytes: expected string, got ' + typeof hex);
+  if (!str(hex)) throw new Error('hexToBytes: expected string, got ' + typeof hex);
   if (hex.length % 2) throw new Error('hexToBytes: received invalid unpadded hex ' + hex.length);
   const array = new Uint8Array(hex.length / 2);
   for (let i = 0; i < array.length; i++) {
diff --git a/src/ed25519.ts b/src/ed25519.ts
index b71bd77..377d44a 100644
--- a/src/ed25519.ts
+++ b/src/ed25519.ts
@@ -240,7 +240,7 @@ export const x25519 = montgomery({
 });
 
 function assertRstPoint(other: unknown) {
-  if (!(other instanceof RistrettoPoint)) throw new TypeError('RistrettoPoint expected');
+  if (!(other instanceof RistrettoPoint)) throw new Error('RistrettoPoint expected');
 }
 // √(-1) aka √(a) aka 2^((p-1)/4)
 const SQRT_M1 = BigInt(
diff --git a/src/p521.ts b/src/p521.ts
index 1525983..7af0928 100644
--- a/src/p521.ts
+++ b/src/p521.ts
@@ -38,8 +38,7 @@ export const P521 = createCurve({
   Gy: BigInt('0x011839296a789a3bc0045c8a5fb42c7d1bd998f54449579b446817afbd17273e662c97ee72995ef42640c550b9013fad0761353c7086a272c24088be94769fd16650'),
   h: BigInt(1),
   lowS: false,
-  // P521 keys could be 130, 131, 132 bytes - which doesn't play nicely.
-  // We ensure all keys are 132 bytes.
+  // P521 keys could be 130, 131, 132 bytes. We normalize to 132 bytes.
   // Does not replace validation; invalid keys would still be rejected.
   normalizePrivateKey(key: PrivKey) {
     if (typeof key === 'bigint') return key;
@@ -47,7 +46,7 @@ export const P521 = createCurve({
     if (typeof key !== 'string' || !([130, 131, 132].includes(key.length))) {
       throw new Error('Invalid key');
     }
-    return key.padStart(66 * 2, '0');
+    return key.padStart(66 * 2, '0'); // ensure it's always 132 bytes
   },
 } as const, sha512);
 export const secp521r1 = P521;
diff --git a/src/secp256k1.ts b/src/secp256k1.ts
index 430ea75..d9af787 100644
--- a/src/secp256k1.ts
+++ b/src/secp256k1.ts
@@ -230,7 +230,7 @@ class SchnorrSignature {
     const bytes = ensureBytes(hex);
     const len = 32; // group length
     if (bytes.length !== 2 * len)
-      throw new TypeError(
+      throw new Error(
         `SchnorrSignature.fromHex: expected ${2 * len} bytes, not ${bytes.length}`
       );
     const r = bytesToNumberBE(bytes.subarray(0, len));
@@ -266,12 +266,12 @@ function schnorrSign(
   privateKey: PrivKey,
   auxRand: Hex = randomBytes(32)
 ): Uint8Array {
-  if (message == null) throw new TypeError(`sign: Expected valid message, not "${message}"`);
+  if (message == null) throw new Error(`sign: Expected valid message, not "${message}"`);
   const m = ensureBytes(message);
   // checks for isWithinCurveOrder
   const { x: px, scalar: d } = schnorrGetScalar(normalizePrivateKey(privateKey));
   const rand = ensureBytes(auxRand);
-  if (rand.length !== 32) throw new TypeError('sign: Expected 32 bytes of aux randomness');
+  if (rand.length !== 32) throw new Error('sign: Expected 32 bytes of aux randomness');
   const tag = taggedHash;
   const t0h = tag(TAGS.aux, rand);
   const t = numTo32b(d ^ bytesToNumberBE(t0h));
@@ -301,7 +301,7 @@ function schnorrVerify(signature: Hex, message: Hex, publicKey: Hex): boolean {
     // Finalize
     // R = s⋅G - e⋅P
     // -eP == (n-e)P
-    const R = secp256k1.ProjectivePoint.BASE.multiplyAndAddUnsafe(
+    const R = secp256k1.ProjectivePoint.BASE.mulAddQUnsafe(
       P,
       normalizePrivateKey(s),
       mod(-e, secp256k1.CURVE.n)
diff --git a/src/stark.ts b/src/stark.ts
index d7ac9d4..e42a603 100644
--- a/src/stark.ts
+++ b/src/stark.ts
@@ -62,7 +62,7 @@ export const starkCurve = weierstrass({
 // Custom Starknet type conversion functions that can handle 0x and unpadded hex
 function hexToBytes0x(hex: string): Uint8Array {
   if (typeof hex !== 'string') {
-    throw new TypeError('hexToBytes: expected string, got ' + typeof hex);
+    throw new Error('hexToBytes: expected string, got ' + typeof hex);
   }
   hex = strip0x(hex);
   if (hex.length & 1) hex = '0' + hex; // padding
@@ -79,7 +79,7 @@ function hexToBytes0x(hex: string): Uint8Array {
 }
 function hexToNumber0x(hex: string): bigint {
   if (typeof hex !== 'string') {
-    throw new TypeError('hexToNumber: expected string, got ' + typeof hex);
+    throw new Error('hexToNumber: expected string, got ' + typeof hex);
   }
   // Big Endian
   // TODO: strip vs no strip?
diff --git a/test/ed25519.test.js b/test/ed25519.test.js
index 40b967c..79607c1 100644
--- a/test/ed25519.test.js
+++ b/test/ed25519.test.js
@@ -29,7 +29,7 @@ describe('ed25519', () => {
 
   function utf8ToBytes(str) {
     if (typeof str !== 'string') {
-      throw new TypeError(`utf8ToBytes expected string, got ${typeof str}`);
+      throw new Error(`utf8ToBytes expected string, got ${typeof str}`);
     }
     return new TextEncoder().encode(str);
   }
diff --git a/test/secp256k1.test.js b/test/secp256k1.test.js
index 88e6731..ad9338b 100644
--- a/test/secp256k1.test.js
+++ b/test/secp256k1.test.js
@@ -25,7 +25,7 @@ const toBEHex = (n) => n.toString(16).padStart(64, '0');
 
 function hexToNumber(hex) {
   if (typeof hex !== 'string') {
-    throw new TypeError('hexToNumber: expected string, got ' + typeof hex);
+    throw new Error('hexToNumber: expected string, got ' + typeof hex);
   }
   // Big Endian
   return BigInt(`0x${hex}`);