diff --git a/crypto/aes/aesgcm-file-encrypt.sh b/crypto/aes/aesgcm-file-encrypt.sh
index 9cde3f7e..f773a496 100755
--- a/crypto/aes/aesgcm-file-encrypt.sh
+++ b/crypto/aes/aesgcm-file-encrypt.sh
@@ -2,9 +2,8 @@
 
 # set -x
 
-dd if=/dev/urandom bs=1024 count=1 | head -c 1022 > text.bin
-
 echo "aesgcm-file-encrypt tests"
+
 keyStr=$(cat /dev/urandom | base64 | head -c 32)
 echo "key = $keyStr"
 
@@ -12,26 +11,71 @@ ivStr=$(cat /dev/urandom | base64 | head -c 16)
 echo "IV = $ivStr"
 
 
-res=$(./aesgcm-file-encrypt -e 256 -m 1 -k $keyStr -v $ivStr -i text.bin -o  text2cipher.bin)
-echo $res
-res=$(./aesgcm-file-encrypt -d 256 -m 1 -k $keyStr -v $ivStr -i text2cipher.bin -o text2cipher2text.bin )
-echo $res
+if [[ "$1" == "-b" ]] || [[ "$1" == "--bench" ]]; then
 
-diff -s text.bin text2cipher2text.bin > /dev/null
-if [ $? -eq 0 ]; then
-  echo "Passed"
+    # Define an array of file sizes to test
+    file_sizes=("10M" "50M" "100M" "500M" "1G")
+
+    # Define the output CSV file and write the header row
+    output_file="aesgcm_times.csv"
+
+    echo "System Information:" > "$output_file"
+    echo "--------------------" >> "$output_file"
+    echo "Hostname: $(hostname)" >> "$output_file"
+    echo "Kernel Version: $(uname -r)" >> "$output_file"
+    echo "Processor Type: $(uname -m)" >> "$output_file"
+    echo "Operating System: $(lsb_release -d | awk '{print $2,$3,$4,$5}')" >> "$output_file"
+    echo "CPU Info: $(lscpu | grep 'Model name' | cut -d':' -f2 | sed 's/^ //')" >> "$output_file"
+    echo "Memory Info: $(free -h | grep 'Mem' | awk '{print $2}')" >> "$output_file"
+
+    echo "File Size, Encryption, Decryption, Encryption EVP, Decryption EVP" > "$output_file"
+
+
+    # Loop over each file size and measure performance
+    for size in "${file_sizes[@]}"
+    do
+        # Generate a test file of the given size
+        text_file=text_"$size".bin
+        dd if=/dev/urandom of=$text_file bs=$size count=1 conv=fsync
+
+        t_aesgcm_e="$( TIMEFORMAT="%R";time (./aesgcm-file-encrypt -e 256 -m 1 -k $keyStr -v $ivStr -i $text_file -o  text2cipher.bin > /dev/null 2>&1) 2>&1 )"
+        t_aesgcm_d="$( TIMEFORMAT="%R";time (./aesgcm-file-encrypt -d 256 -m 1 -k $keyStr -v $ivStr -i text2cipher.bin -o text2cipher2text.bin > /dev/null 2>&1) 2>&1 )"
+
+        diff -s $text_file text2cipher2text.bin > /dev/null
+        if [ $? -eq 0 ]; then
+          echo "Passed $t_aesgcm_e $t_aesgcm_d"
+        else
+          echo "Failed"
+        fi
+
+        t_evpgcm_e="$( TIMEFORMAT="%R";time (./aesgcm-file-encrypt -e 256 -m 2 -k $keyStr -v $ivStr -i $text_file -o  text2cipher.evp.bin > /dev/null 2>&1) 2>&1 )"
+        t_evpgcm_d="$( TIMEFORMAT="%R";time (./aesgcm-file-encrypt -d 256 -m 2 -k $keyStr -v $ivStr -i text2cipher.evp.bin -o text2cipher2text.evp.bin > /dev/null 2>&1) 2>&1 )"
+
+        diff -s $text_file text2cipher2text.evp.bin > /dev/null
+        if [ $? -eq 0 ]; then
+          echo "Passed $t_evpgcm_e $t_evpgcm_d"
+        else
+          echo "Failed"
+        fi
+
+        echo "$size, $t_aesgcm_e,$t_aesgcm_d,$t_evpgcm_e,$t_evpgcm_d" >> "$output_file"
+        rm text*
+    done
 else
-  echo "Failed"
+    # test a smaller file size (default option)
+    dd if=/dev/urandom bs=1024 count=1 | head -c 1022 > text.bin
+    res=$(./aesgcm-file-encrypt -e 256 -m 1 -k $keyStr -v $ivStr -i text.bin -o  text2cipher.bin )
+    echo $res
+    res=$(./aesgcm-file-encrypt -d 256 -m 1 -k $keyStr -v $ivStr -i text2cipher.bin -o text2cipher2text.bin )
+    echo $res
+
+    diff -s text.bin text2cipher2text.bin > /dev/null
+    if [ $? -eq 0 ]; then
+      echo "Passed"
+    else
+      echo "Failed"
+    fi
+    rm text*
 fi
 
-res=$(./aesgcm-file-encrypt -e 256 -m 2 -k $keyStr -v $ivStr -i text.bin -o  text2cipher.evp.bin)
-echo $res
-res=$(./aesgcm-file-encrypt -d 256 -m 2 -k $keyStr -v $ivStr -i text2cipher.evp.bin -o text2cipher2text.evp.bin )
-echo $res
-
-diff -s text.bin text2cipher2text.evp.bin > /dev/null
-if [ $? -eq 0 ]; then
-  echo "Passed"
-else
-  echo "Failed"
-fi
+exit 0