3 files changed, 7 insertions, 11 deletions
diff --git a/include/salticidae/crypto.h b/include/salticidae/crypto.h
index c329c63..79e9377 100644
--- a/include/salticidae/crypto.h
+++ b/include/salticidae/crypto.h
@@ -31,14 +31,13 @@
 namespace salticidae {
 
 class SHA256 {
-    SHA256_CTX *ctx;
+    SHA256_CTX ctx;
 
     public:
-    SHA256(): ctx(new SHA256_CTX()) { reset(); }
-    ~SHA256() { delete ctx; }
+    SHA256() { reset(); }
 
     void reset() {
-        if (!SHA256_Init(ctx))
+        if (!SHA256_Init(&ctx))
             throw std::runtime_error("openssl SHA256 init error");
     }
 
@@ -52,12 +51,12 @@ class SHA256 {
     }
 
     void update(const uint8_t *ptr, size_t length) {
-        if (!SHA256_Update(ctx, ptr, length))
+        if (!SHA256_Update(&ctx, ptr, length))
             throw std::runtime_error("openssl SHA256 update error");
     }
 
     void _digest(bytearray_t &md) {
-        if (!SHA256_Final(&*md.begin(), ctx))
+        if (!SHA256_Final(&*md.begin(), &ctx))
             throw std::runtime_error("openssl SHA256 error");
     }
 
diff --git a/include/salticidae/stream.h b/include/salticidae/stream.h
index 03b9d13..267d294 100644
--- a/include/salticidae/stream.h
+++ b/include/salticidae/stream.h
@@ -109,11 +109,11 @@ class DataStream {
 
     const uint8_t *get_data_inplace(size_t len) {
         auto res = (uint8_t *)&*(buffer.begin() + offset);
+        offset += len;
 #ifndef SALTICIDAE_NOCHECK
-        if (offset + len > buffer.size())
+        if (offset > buffer.size())
             throw std::ios_base::failure("insufficient buffer");
 #endif
-        offset += len;
         return res;
     }
 
diff --git a/include/salticidae/type.h b/include/salticidae/type.h
index 13975a5..13d3071 100644
--- a/include/salticidae/type.h
+++ b/include/salticidae/type.h
@@ -33,7 +33,6 @@
 #include <cstdio>
 #include <ios>
 #include <functional>
-#include <mutex>
 
 namespace salticidae {
 
@@ -41,8 +40,6 @@ const auto _1 = std::placeholders::_1;
 const auto _2 = std::placeholders::_2;
 
 using bytearray_t = std::vector<uint8_t>;
-using mutex_lg_t = std::lock_guard<std::mutex>;
-using mutex_ul_t = std::unique_lock<std::mutex>;
 
 template<typename T> T htole(T) = delete;
 template<> inline uint16_t htole<uint16_t>(uint16_t x) { return htole16(x); }