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Use pools for GCM contexts

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This commit is contained in:
Vitaliy Filippov
2026-04-27 15:24:44 +03:00
parent dccc549e33
commit 03e15338e5
9 changed files with 147 additions and 93 deletions
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src/client/msgr_receive.cpp
+28 -3
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@@ -287,6 +287,26 @@ public:
void reset()
{
from = cl->read_op_pos;
if (!cl->dec_ctx)
{
if (msgr->decrypt_gcm_pool.size())
{
cl->dec_ctx = msgr->decrypt_gcm_pool.back();
msgr->decrypt_gcm_pool.pop_back();
}
else
{
cl->dec_ctx = EVP_CIPHER_CTX_new();
assert(cl->dec_ctx);
int r = EVP_DecryptInit_ex(cl->dec_ctx, EVP_aes_256_gcm(), NULL, NULL, NULL);
if (r != 1)
{
fprintf(stderr, "DecryptInit error: ");
ERR_print_errors_fp(stderr);
abort();
}
}
}
uint8_t iv[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
int r = EVP_DecryptInit_ex(cl->dec_ctx, NULL, NULL, (uint8_t*)msgr->test_osd_aes_key.data(), iv);
if (r != 1)
@@ -400,6 +420,11 @@ public:
cl->io_error = true;
return false;
}
if (msgr->decrypt_gcm_pool.size() < msgr->max_cipher_pool_size)
msgr->decrypt_gcm_pool.push_back(cl->dec_ctx);
else
EVP_CIPHER_CTX_free(cl->dec_ctx);
cl->dec_ctx = NULL;
cl->dec_tag_size = 0;
assert(len == 0);
return true;
@@ -461,7 +486,7 @@ public:
bool read(uint8_t *dst, size_t dst_len, int flags) override
{
if (cl->dec_ctx)
if (cl->gcm_enabled)
return false; // FIXME Only for tests, use copy-only with AES
if (from >= dst_len)
{
@@ -495,7 +520,7 @@ public:
bool finish() override
{
if (cl->dec_ctx)
if (cl->gcm_enabled)
return false;
return true;
}
@@ -691,7 +716,7 @@ void osd_messenger_t::handle_immediate_ops()
bool osd_messenger_t::handle_read_buffer(osd_client_t *cl, uint8_t *curbuf, size_t bufsize)
{
if (cl->dec_ctx)
if (cl->gcm_enabled)
{
return handle_buffer_with<gcm_op_reader_t>(cl, curbuf, bufsize);
}