Work around a problem when built with OpenSSL

It appears OpenSSL has a different interpretation from us of how the
message representative is formed for P-521 when given a hash to sign
that is larger than the group order; signatures generated by us do
not verify with OpenSSL and vice versa.

1 files changed, 1 insertions, 5 deletions

diff --git a/src/lib/pubkey/ecdsa/ecdsa.cpp b/src/lib/pubkey/ecdsa/ecdsa.cpp
index 70196f55b..fadf1dd10 100644
--- a/src/lib/pubkey/ecdsa/ecdsa.cpp
+++ b/src/lib/pubkey/ecdsa/ecdsa.cpp
@@ -71,11 +71,7 @@ PointGFp recover_ecdsa_public_key(const EC_Group& group,
       const BigInt ne = group.mod_order(group_order - e);
       return r_inv * RG_mul.multi_exp(s, ne);
       }
-   catch(Illegal_Point&)
-      {
-      // continue on and throw
-      }
-   catch(Decoding_Error&)
+   catch(...)
       {
       // continue on and throw
       }