pub unsafe extern "C" fn secp256k1_ecdsa_adaptor_encrypt( cx: *const Context, adaptor_sig162: *mut EcdsaAdaptorSignature, seckey32: *const c_uchar, enckey: *const PublicKey, msg32: *const c_uchar, noncefp: EcdsaAdaptorNonceFn, ndata: *mut c_void) -> c_int