aggiunte risorse kerlink

firmware/4.2.x/pnrcipher.py

+#!/usr/bin/python3
+
+
+import argparse
+import os
+import hashlib
+from subprocess import call
+from Crypto.Cipher import AES
+from Crypto import Random
+from binascii import hexlify
+
+DEFAULT_SALT = "__UPLOAD__"
+DEFAULT_ITERATION = 8192
+DEFAULT_KEY_LEN = 32
+
+
+def cipherfile(file,key):
+    size = os.path.getsize(file)
+    hash = hashlib.sha256(open(file, 'rb').read()).hexdigest()
+    data  = size.to_bytes(4, byteorder='big') + open(file, 'rb').read() + bytes.fromhex(hash)
+    iv_raw = Random.new().read(16)
+    iv = int.from_bytes(iv_raw, byteorder='big')
+    iv_str = format(iv, 'x')
+    with open(file + ".tmp", 'wb') as f:
+        f.write(data)
+        f.close()
+    call(["openssl", "aes-256-cbc", "-md", "sha256", "-e", "-iv", iv_str, "-K", hexlify(key), "-in", file + ".tmp", "-out", file + ".enc"])
+    data  = iv_raw +  open(file + ".enc", 'rb').read()
+    with open(file + ".enc", 'wb') as f:
+        f.write(data)
+        f.close()
+    try:
+        os.remove(file + ".tmp")
+    except Exception:
+        pass
+
+def pnrcipher(file,pnrapilevel,password, salt=DEFAULT_SALT, iterations=DEFAULT_ITERATION, keylen=DEFAULT_KEY_LEN):
+    if pnrapilevel == 0 :
+        call(["openssl", "aes-256-cbc", "-md", "sha256" , "-e", "-in", file, "-out", file + ".enc", "-k",  password])
+    elif pnrapilevel == 1:
+        pbkdf2(file, password, salt, iterations, keylen)
+    else :
+        print("Error : Unknown Proven Run Api Level : " + args.pnrapilevel)
+        return 1
+    return 0
+
+def pbkdf2(file, password, salt, iterations, keylen):
+    dk = hashlib.pbkdf2_hmac('sha256', str.encode(password), str.encode(salt), iterations, dklen=keylen )
+    cipherfile(file,dk)
+    return 0
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-f", "--file", dest="file", type=str, required=True, help="File to be ciphered")
+    parser.add_argument("-p", "--password", dest="password", type=str, required=True, help="Password used")
+    parser.add_argument("-s", "--salt", dest="salt", type=str, default=DEFAULT_SALT)
+    parser.add_argument("-i", "--iterations", dest="iterations", type=int, default=DEFAULT_ITERATION)
+    parser.add_argument("-l", "--len", dest="keylen", type=int, default=DEFAULT_KEY_LEN)
+    args = parser.parse_args()
+
+    pbkdf2(args.file, args.password, args.salt, args.iterations, args.keylen)
+    return 0
+
+
+if __name__ == "__main__":
+    main()
+    exit(0)