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| author | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2017-09-12 21:41:30 +0100 |
|---|---|---|
| committer | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2017-09-18 11:23:15 +0100 |
| commit | 6137a0b94d86e9f1c3321969da1c74f1d5e72b4f (patch) | |
| tree | 5f22756053d60d8200e138192c94cd918911871e /src/common/apply_permutation.h | |
| parent | core: sort ins and outs key key image and public key, respectively (diff) | |
| download | monero-6137a0b94d86e9f1c3321969da1c74f1d5e72b4f.tar.xz | |
blockchain: reject unsorted ins and outs from v7
This ensures no information is leaked by the ordering
Diffstat (limited to '')
| -rw-r--r-- | src/common/apply_permutation.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/common/apply_permutation.h b/src/common/apply_permutation.h index 4de224690..4fd952686 100644 --- a/src/common/apply_permutation.h +++ b/src/common/apply_permutation.h @@ -32,12 +32,18 @@ #include <vector> #include <functional> +#include "misc_log_ex.h" namespace tools { -void apply_permutation(std::vector<size_t> permutation, const std::function<void(size_t, size_t)> &swap) +template<typename F> +void apply_permutation(std::vector<size_t> permutation, const F &swap) { + //sanity check + for (size_t n = 0; n < permutation.size(); ++n) + CHECK_AND_ASSERT_THROW_MES(std::find(permutation.begin(), permutation.end(), n) != permutation.end(), "Bad permutation"); + for (size_t i = 0; i < permutation.size(); ++i) { size_t current = i; @@ -55,6 +61,7 @@ void apply_permutation(std::vector<size_t> permutation, const std::function<void template<typename T> void apply_permutation(const std::vector<size_t> &permutation, std::vector<T> &v) { + CHECK_AND_ASSERT_THROW_MES(permutation.size() == v.size(), "Mismatched vector sizes"); apply_permutation(permutation, [&v](size_t i0, size_t i1){ std::swap(v[i0], v[i1]); }); } |