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-rw-r--r--src/crypto/electrum-words.cpp9
1 files changed, 3 insertions, 6 deletions
diff --git a/src/crypto/electrum-words.cpp b/src/crypto/electrum-words.cpp
index a11d287b2..96a392d04 100644
--- a/src/crypto/electrum-words.cpp
+++ b/src/crypto/electrum-words.cpp
@@ -54,7 +54,9 @@ namespace crypto
w2 = wordsMap.at(wlist[i*3 + 1]);
w3 = wordsMap.at(wlist[i*3 + 2]);
- val = w1 + n * ((w2 - w1) % n) + n * n * ((w3 - w2) % n);
+ val = w1 + n * (((n - w1) + w2) % n) + n * n * (((n - w2) + w3) % n);
+
+ if (!(val % n == w1)) return false;
memcpy(dst.data + i * 4, &val, 4); // copy 4 bytes to position
}
@@ -67,11 +69,6 @@ namespace crypto
wlist_copy += words;
}
- std::string back_to_words;
- bytes_to_words(dst, back_to_words);
-
- assert(wlist_copy == back_to_words); // sanity check
-
return true;
}