fixed connection bugs

src/cryptography/AES.h

@@ -88,6 +88,7 @@ typedef struct AESStreamEncryptor {
 /// @param dec_class &br_aes_XXX_ctr_vtable
 void AESStreamEncryptor_construct(AESStreamEncryptor* ptr, Array(u8) key, const br_block_ctr_class* ctr_class);
 
+/// use this only at the beginning of the stream
 #define AESStreamEncryptor_calcDstSize(src_size) (src_size + __AES_BLOCK_IV_SIZE)
 
 /// @brief If ptr->block_counter == 0, writes random IV to `dst`. After that writes encrypted data to dst.
@@ -114,7 +115,7 @@ typedef struct AESStreamDecryptor {
 void AESStreamDecryptor_construct(AESStreamDecryptor* ptr, Array(u8) key, const br_block_ctr_class* ctr_class);
 
 /// @brief Reads IV from `src`, then decrypts data and writes it to dst
-/// @param src array of size at least AESStreamEncryptor_calcDstSize(0).
+/// @param src array of any size
 /// @param dst array of size >= src.size
 /// @return size of decrypted data
 Result(u32) AESStreamDecryptor_decrypt(AESStreamDecryptor* ptr, Array(u8) src, Array(u8) dst);