Class PublicKeyUtils

Utility class for Multikey operations/ PublicKeyUtils

Index

Constructors

Methods

fromPrivateKey liftX modPow sqrtMod

Constructors

constructor

new PublicKeyUtils(): PublicKeyUtils
Returns PublicKeyUtils

Methods

`Static`fromPrivateKey

fromPrivateKey(pk: Bytes | PrivateKey): PublicKey
Computes the deterministic public key for a given private key.
Parameters
- pk: Bytes | PrivateKey
  The PrivateKey object or the private key bytes
Returns PublicKey
A new PublicKey object
- Defined in public-key.ts:222

`Static`liftX

liftX(xBytes: Uint8Array): Uint8Array
Lifts a 32-byte x-only coordinate into a full secp256k1 point (x, y).
Parameters
- xBytes: Uint8Array
  32-byte x-coordinate
Returns Uint8Array
65-byte uncompressed public key (starts with 0x04)
- Defined in public-key.ts:274

`Static`modPow

modPow(base: bigint, exp: bigint, mod: bigint): bigint
Computes modular exponentiation: (base^exp) % mod. Used for computing modular square roots.
Parameters
- base: bigint
  The base value
- exp: bigint
  The exponent value
- mod: bigint
  The modulus value
Returns bigint
The result of the modular exponentiation
- Defined in public-key.ts:247

`Static`sqrtMod

sqrtMod(a: bigint, p: bigint): bigint
Computes sqrt(a) mod p using Tonelli-Shanks algorithm. This finds y such that y^2 ≡ a mod p.
Parameters
- a: bigint
  The value to find the square root of
- p: bigint
  The prime modulus
Returns bigint
The square root of a mod p
- Defined in public-key.ts:265