Function secp256k1_abc_sys::secp256k1_ecdsa_recover

pub unsafe extern "C" fn secp256k1_ecdsa_recover(
    ctx: *const secp256k1_context, 
    pubkey: *mut secp256k1_pubkey, 
    sig: *const secp256k1_ecdsa_recoverable_signature, 
    msg32: *const c_uchar
) -> c_int

Recover an ECDSA public key from a signature.

Returns: 1: public key successfully recovered (which guarantees a correct signature). 0: otherwise. Args: ctx: pointer to a context object, initialized for verification (cannot be NULL) Out: pubkey: pointer to the recovered public key (cannot be NULL) In: sig: pointer to initialized signature that supports pubkey recovery (cannot be NULL) msg32: the 32-byte message hash assumed to be signed (cannot be NULL)