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create EVP_MD_CTX for siphash only once

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orignal committed 2026-05-27 08:57:37 -04:00
1 parent d6273b277d
commit a9a15e7ebc
2 files changed
+21 -6
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libi2pd/IdentMetrics.cpp
+16 -6
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@@ -46,19 +46,29 @@ namespace data
PeerOrdering::PeerOrdering ()
{
RAND_bytes (m_PeerOrderingKey, 16);
#if OPENSSL_SIPHASH
EVP_PKEY * sipKey = EVP_PKEY_new_raw_private_key (EVP_PKEY_SIPHASH, nullptr, m_PeerOrderingKey, 16);
m_MDCtx = EVP_MD_CTX_create ();
EVP_DigestSignInit (m_MDCtx, nullptr, nullptr, nullptr, sipKey);
EVP_PKEY_free (sipKey);
#endif
}
PeerOrdering::~PeerOrdering ()
{
#if OPENSSL_SIPHASH
if (m_MDCtx) EVP_MD_CTX_destroy (m_MDCtx);
#endif
}
int PeerOrdering::CalculatePeerOrderingGroup (const IdentHash& routerIdent)
{
uint8_t hash[16];
#if OPENSSL_SIPHASH
EVP_PKEY * sipKey = EVP_PKEY_new_raw_private_key (EVP_PKEY_SIPHASH, nullptr, m_PeerOrderingKey, 16);
EVP_MD_CTX * ctx = EVP_MD_CTX_create ();
EVP_DigestSignInit (ctx, nullptr, nullptr, nullptr, sipKey);
EVP_DigestSignInit (m_MDCtx, nullptr, nullptr, nullptr, nullptr);
EVP_DigestSignUpdate (m_MDCtx, routerIdent, 32);
size_t l = 16;
EVP_DigestSign (ctx, hash, &l, routerIdent, 32);
EVP_MD_CTX_destroy (ctx);
EVP_PKEY_free (sipKey);
EVP_DigestSignFinal (m_MDCtx, hash, &l);
#else
i2p::crypto::Siphash<16> (hash, routerIdent, 32, m_PeerOrderingKey);
#endif