secp256k1EcdsaRecover

For the complete documentation index, see llms.txt

Function: secp256k1EcdsaRecover()

function secp256k1EcdsaRecover(
   msgHash, 
   sig, 
   recoveryId): Secp256k1Point;

Recover the secp256k1 public key from an ECDSA signature and a message hash.

bit 0 (recoveryId & 1) is the parity of R.y: 0 for even, 1 for odd.
bit 1 (recoveryId >= 2) says whether the reduction wrapped, i.e. whether R.x is r (0, 1) or r + n (2, 3).
0: R = (r, y) with y even — the common case.
1: R = (r, y) with y odd — the other common case.
2: R = (r + n, y) with y even.
3: R = (r + n, y) with y odd.

Uint8Array

bigint

bigint

number