Skip context randomization in fuzzing to improve performance

secp256k1-sys/src/lib.rs

@@ -278,10 +278,6 @@ extern "C" {
  #[cfg_attr(not(rust_secp_no_symbol_renaming), link_name = "rustsecp256k1_v0_4_0_context_preallocated_destroy")]
  pub fn secp256k1_context_preallocated_destroy(cx: *mut Context);
 
- #[cfg_attr(not(rust_secp_no_symbol_renaming), link_name = "rustsecp256k1_v0_4_0_context_randomize")]
- pub fn secp256k1_context_randomize(cx: *mut Context,
- seed32: *const c_uchar)
- -> c_int;
  // Signatures
  #[cfg_attr(not(rust_secp_no_symbol_renaming), link_name = "rustsecp256k1_v0_4_0_ecdsa_signature_parse_der")]
  pub fn secp256k1_ecdsa_signature_parse_der(cx: *const Context, sig: *mut Signature,
@@ -369,6 +365,10 @@ extern "C" {
  #[cfg_attr(not(rust_secp_no_symbol_renaming), link_name = "rustsecp256k1_v0_4_0_context_preallocated_clone")]
  pub fn secp256k1_context_preallocated_clone(cx: *const Context, prealloc: *mut c_void) -> *mut Context;
 
+ #[cfg_attr(not(rust_secp_no_symbol_renaming), link_name = "rustsecp256k1_v0_4_0_context_randomize")]
+ pub fn secp256k1_context_randomize(cx: *mut Context,
+ seed32: *const c_uchar)
+ -> c_int;
  // Pubkeys
  #[cfg_attr(not(rust_secp_no_symbol_renaming), link_name = "rustsecp256k1_v0_4_0_ec_pubkey_parse")]
  pub fn secp256k1_ec_pubkey_parse(cx: *const Context, pk: *mut PublicKey,
@@ -738,6 +738,14 @@ mod fuzz_dummy {
  rustsecp256k1_v0_4_0_context_preallocated_clone(cx, prealloc)
  }
 
+ pub unsafe fn secp256k1_context_randomize(cx: *mut Context,
+ _seed32: *const c_uchar)
+ -> c_int {
+ // This function is really slow, and unsuitable for fuzzing
+ check_context_flags(cx, 0);
+ 1
+ }
+
  unsafe fn check_context_flags(cx: *const Context, required_flags: c_uint) {
  assert!(!cx.is_null());
  let cx_flags = if cx == secp256k1_context_no_precomp {