Added groth16_prover_zkey_file function

src/binfile_utils.cpp

@@ -73,6 +73,9 @@ BinFile::BinFile(std::string fileName, std::string _type, uint32_t maxVersion) {
 
 BinFile::BinFile(const void *fileData, size_t fileSize, std::string _type, uint32_t maxVersion) {
 
+    is_fd = false;
+    fd = -1;
+
     size = fileSize;
     addr = malloc(size);
     memcpy(addr, fileData, size);

src/binfile_utils.hpp

@@ -39,8 +39,6 @@ namespace BinFileUtils {
         BinFile(std::string fileName, std::string _type, uint32_t maxVersion);
         ~BinFile();
 
-        void *getSetcionData(u_int32_t sectionId, u_int32_t sectionPos = 0);
-
         void startReadSection(u_int32_t sectionId, u_int32_t setionPos = 0);
         void endReadSection(bool check = true);
 

src/prover.cpp

@@ -11,6 +11,7 @@
 #include "wtns_utils.hpp"
 #include "groth16.hpp"
 #include "binfile_utils.hpp"
+#include "fileloader.hpp"
 
 using json = nlohmann::json;
 
@@ -65,13 +66,11 @@ unsigned long CalcPublicBufferSize(const void *zkey_buffer, unsigned long zkey_s
     return 0;
 }
 
-int
-groth16_prover(const void *zkey_buffer,   unsigned long  zkey_size,
-               const void *wtns_buffer,   unsigned long  wtns_size,
-               char       *proof_buffer,  unsigned long *proof_size,
-               char       *public_buffer, unsigned long *public_size,
-               char       *error_msg,     unsigned long  error_msg_maxsize)
-{
+int groth16_prover(const void *zkey_buffer, unsigned long zkey_size,
+                   const void *wtns_buffer, unsigned long wtns_size,
+                   char *proof_buffer, unsigned long *proof_size,
+                   char *public_buffer, unsigned long *public_size,
+                   char *error_msg, unsigned long error_msg_maxsize) {
     try {
         BinFileUtils::BinFile zkey(zkey_buffer, zkey_size, "zkey", 1);
         auto zkeyHeader = ZKeyUtils::loadHeader(&zkey);
@@ -160,3 +159,20 @@ groth16_prover(const void *zkey_buffer,   unsigned long  zkey_size,
 
     return PROVER_OK;
 }
+
+int groth16_prover_zkey_file(const char *zkey_file_path,
+                             const void *wtns_buffer, unsigned long wtns_size,
+                             char *proof_buffer, unsigned long *proof_size,
+                             char *public_buffer, unsigned long *public_size,
+                             char *error_msg, unsigned long error_msg_maxsize) {
+
+    std::string zkey_filename(zkey_file_path);
+
+    BinFileUtils::FileLoader fileLoader(zkey_filename);
+
+    return groth16_prover(fileLoader.dataBuffer(), fileLoader.dataSize(),
+                          wtns_buffer, wtns_size,
+                          proof_buffer, proof_size,
+                          public_buffer, public_size,
+                          error_msg, error_msg_maxsize);
+}

src/prover.h

@@ -24,12 +24,24 @@ unsigned long CalcPublicBufferSize(const void *zkey_buffer, unsigned long zkey_s
  *         PPOVER_ERROR - in case of an error
  *         PROVER_ERROR_SHORT_BUFFER - in case of a short buffer error, also updates proof_size and public_size with actual proof and public sizess
  */
-int
-groth16_prover(const void *zkey_buffer,   unsigned long  zkey_size,
-               const void *wtns_buffer,   unsigned long  wtns_size,
-               char       *proof_buffer,  unsigned long *proof_size,
-               char       *public_buffer, unsigned long *public_size,
-               char       *error_msg,     unsigned long  error_msg_maxsize);
+int groth16_prover(const void *zkey_buffer, unsigned long zkey_size,
+                   const void *wtns_buffer, unsigned long wtns_size,
+                   char *proof_buffer, unsigned long *proof_size,
+                   char *public_buffer, unsigned long *public_size,
+                   char *error_msg, unsigned long error_msg_maxsize);
+
+/**
+ * groth16_prover
+ * @return error code:
+ *         PROVER_OK - in case of success
+ *         PPOVER_ERROR - in case of an error
+ *         PROVER_ERROR_SHORT_BUFFER - in case of a short buffer error, also updates proof_size and public_size with actual proof and public sizess
+ */
+int groth16_prover_zkey_file(const char *zkey_file_path,
+                         const void *wtns_buffer, unsigned long wtns_size,
+                         char *proof_buffer, unsigned long *proof_size,
+                         char *public_buffer, unsigned long *public_size,
+                         char *error_msg, unsigned long error_msg_maxsize);
 
 #ifdef __cplusplus
 }