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18 lines
645 B
18 lines
645 B
from Crypto.PublicKey import RSA
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from Crypto.Cipher import AES, PKCS1_OAEP
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file_in = open("Datos_Encriptados.bin", "rb")
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private_key = RSA.import_key(open("privada_usuario_A.pem").read())
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enc_session_key, nonce, tag, ciphertext = \
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[ file_in.read(x) for x in (private_key.size_in_bytes(), 16, 16, -1) ]
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# Desencriptar la desión RSA con la clave privada del usuario_A
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cipher_rsa = PKCS1_OAEP.new(private_key)
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session_key = cipher_rsa.decrypt(enc_session_key)
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# Desencptar los datos ocn la sesión AES
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cipher_aes = AES.new(session_key, AES.MODE_EAX, nonce)
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data = cipher_aes.decrypt_and_verify(ciphertext, tag)
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print(data.decode("utf-8")) |