diff options
Diffstat (limited to 'src/lib/mac/poly1305/poly1305.cpp')
| -rw-r--r-- | src/lib/mac/poly1305/poly1305.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/lib/mac/poly1305/poly1305.cpp b/src/lib/mac/poly1305/poly1305.cpp index 545a749fa..506150b0f 100644 --- a/src/lib/mac/poly1305/poly1305.cpp +++ b/src/lib/mac/poly1305/poly1305.cpp @@ -190,7 +190,11 @@ void Poly1305::final_result(byte out[]) if(m_buf_pos != 0) { m_buf[m_buf_pos] = 1; - clear_mem(&m_buf[m_buf_pos+1], m_buf.size() - m_buf_pos - 1); + const auto len = m_buf.size() - m_buf_pos - 1; + if (len > 0) + { + clear_mem(&m_buf[m_buf_pos+1], len); + } poly1305_blocks(m_poly, m_buf.data(), 1, true); } |