Improved and accurate signature output
Signed-off-by: HeshamTB <hishaminv@gmail.com>
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commit
7ae3e4dc04
21
rsa.py
Executable file → Normal file
21
rsa.py
Executable file → Normal file
@ -75,22 +75,26 @@ def main():
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for cipher_word in cipher_list:
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msg_decrypted = msg_decrypted + " " + str(decrypt(int(cipher_word, 16),key[D],key[N]))
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if sig == None:
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print("Unknown signature!")
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print("\033[91mUnknown signature! \u2717" + "\033[0m")
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else:
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print("Signed by: ", sig)
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print("Signed by: \033[92m " + sig + " \u2713\033[0m")
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print("Decrypted message: \n", msg_decrypted)
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else:
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print("Not enough arguments")
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print("rsa decrypt \"<cipher>\" <key>")
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print("rsa decrypt \"<cipher>\" <keyid>")
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exit(0)
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if sys.argv[1] == "list":
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listKeys()
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exit(0)
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if sys.argv[1] == "export": #rsa export <key>
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if len(sys.argv) == 3:
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key_file_name = sys.argv[2]
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exportKey(key_file_name)
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exit(0)
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else:
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print("Not enough arguments")
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print("rsa export <keyid>")
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if sys.argv[1] == "crack": #rsa crack <key>
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keyName = sys.argv[2]
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cracked_key = crackKey2(keyName)
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@ -136,10 +140,10 @@ def encrypt(message, publicKey):
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msg_text = message
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n = publicKey[N]
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e = publicKey[E]
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print("using n: {0}, e: {1}".format(n, e))
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#print("using n: {0}, e: {1}".format(n, e))
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msg_number_form = int.from_bytes(msg_text.encode(), byteOrder)
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print("Word: %s or %d" % (msg_text, msg_number_form))
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#print("Word: %s or %d" % (msg_text, msg_number_form))
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msg_encrypted_number_form = pow(msg_number_form, e, n) # c = msg^e mod n
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return msg_encrypted_number_form
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@ -152,7 +156,8 @@ def decrypt(cipher, privateKey, n):
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try:
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msg_decrypted = str(msg_decrypted.to_bytes(msg_decrypted.bit_length(), byteOrder).decode()).strip()
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except UnicodeDecodeError:
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print("Cant decrypt properly")
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#print("decrypt: Cant decrypt properly")
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return ""
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return msg_decrypted
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def getPrime(bits):
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@ -199,7 +204,6 @@ def sign(encrypted_msg, key):
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return signed_msg.strip()
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def verify(cipher_list):
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sig = "Unknown"
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local_keys = os.listdir(keysFolder)
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cipher_list.reverse() #To get last word using index 0
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encrypted_sig = cipher_list[0]
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@ -211,7 +215,8 @@ def verify(cipher_list):
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sig = str(decrypt(int(encrypted_sig, 16), key[E], key[N]))
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if "sig:" in sig:
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return sig.replace("sig:","")
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else: return sig
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else: continue
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else: return None
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def readKeyFile(keyName):
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key = tuple()
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