1

我试图检索数据库中的加密值，并解密它们。但这对我不起作用。这是我试图解密的来自 sqlite3 的记录：

[(b'gAAAAABg5EBDnm6LZdHNzzjnDlFcA80SeS1s-wXhKx_opwOm0vSNsfcxheZC4abQ-qvifmxxbCT8gGy2O1dz-76gx3_ALVmeZQ==', b'gAAAAABg5EBD1k2kpmYaAI0PNfjHondg5mB9RwxoIxVqAkfZcAeYrK-H4oqyYjV9WcHFN0CF7Xf0dN2rAXKrkAq-myyfNUplSg==', b'gAAAAABg5EBDJrUQazdiAdf4yejxIwzZHSln-hAcYLkh27-7HO5gE8XjHZjUz3Y2-lHoDIINSAzUt10J93eZ2EeCNUGA1mVrgw==', b'gAAAAABg5EBDp5znqWT87IMASAjDuhMtB7uMV2rezOEQzy_O4ka8R8Dn0fCkZhajVBIQ3S0-MQiM2Mq0qS8JbKCD_rZhbaFPcA==', b'gAAAAABg5EBDZ3YdqhKFRZWQeKP3VUvaVWp-pmSub2aZtQGIpirZ6Pi9zplxdqCindAOHJIQrlcjAr_FG_vnH8U89_bx7FjX2Q==', b'gAAAAABg5EBDjIcwfpyMYXxoEK9XZjJEDyFM3sWfpM61hgAIOf4cNTj1etS1nCMsLIZtKIrF5wSRkmzP_tiXyDolisVkjr6uuA=='), ('gAAAAABg5EDjNQV_tNHuRRkZvdLDfnI20iGZ0Cpzv--1Xct0brLjCOlqnt0ZOU0AYe-tbQ390yIF2B-xlDGuP1-isAtgkWtGTQ==', 'gAAAAABg5EDjC84Zs7HPm1zPe9O2sWNX_HSf3pZeyivmqaPC-VYu5qely818-srsNOtVYtNoGCineThtqQuEC7vjteYV3sHIjA==', 'gAAAAABg5EDj-rUfVVvzObgt4HcgUr7UczgKTrdQyim-ZIY9AeFFGpreZeUS0G9ojkqX_o1AeDyUkcZ4mKIVwoK1dSOINPcp1Q==', 'gAAAAABg5EDjRwttFLM-AhzcFPsKX_cZv9BXnZd__wUH2fRudsFCTwwGnQxhWgxNjNN42zUs_ig6iVmLOJVZRJWno5LzRNQuVQ==', 'gAAAAABg5EDjyAbkEspirSsfj9tzwk5nwoR1rTP9QLjFSOO43Ju3eA1sBEiyTzn_yqpN8O67efYH1F7cEIrK9ne8D9zIRlg_RA==', 'gAAAAABg5EDj0Cgif60GqnxTu-_sd5gnFZvgvNyUZLoyh_QDRtq0ZHihaWiWv9ck9WlI1dKPKeg4nddFHep4lhb0YslRg7ZMhA=='), ('gAAAAABg5EOIDTUoHx9go4zl2J_WEcIcTKlCICNDGm241Izle6lH4BekWq6xH8i5IkhaSZPz82ADlQSyVAhhmCtu8FPN4sixOg==', 'gAAAAABg5EOIwgZcgSDSI0M4y9-faMjWBXtyx-GsJHmVV6P8QEru6wWMqPu0KFRFJB8CscVA8PtazieIcjcFqnpP_GTsG7Zebw==', 'gAAAAABg5EOIUa-sJK-76B45cAMZ-Vpog6KouDdo7p56Tmyq4GwF4Cw5ANALF-xckR52gpN1B6_YCY6V5x642lyKMLbzZh3O6A==', 'gAAAAABg5EOIm6UpODzgfb9sxJujrNtaPRDJS_GjXnS9jNHAb4wN3aQljZAKARboQiRvG1WYkVLCetaNN8jOSgF15tWgYmugNQ==', 'gAAAAABg5EOIOQ9mB2ONC-0HCXER4xsCyBxRRcDVRoe6WICyQJvS1ZpdgI2UjASL4yYvRjoLxyRm03Ka0o4iuPoTYIOk7JOnIA==', 'gAAAAABg5EOIt6wbW5vS2PrZjeu7RhBioL-U_c63nXZLJRH1gajaaV6kzbsIHLSFYcawXiwZ75sUnQTFj5JPtMlTFj8TRo80nw=='), ('gAAAAABg5EQXGsA0VtAientcwIOpL6igK7fan8lYGKlAbyEpEg4sH4JoHmOmYN4vTfZxXiS_E1Jn_me-L_xpbqgtC9z2ihPnWQ==', 'gAAAAABg5EQXDij9NMYOva_CTBXsPZMT8rGiEPZnHOuFbjIHHX2Wi46DOFMtEHy6O1MP7HimMJsPRkXgIrb7MGr610clFlhjRg==', 'gAAAAABg5EQXupxCcXLmtqjskNWx9TQVaF-ZHovEhv1g6qNA8zDkjY_4rA2Utk8sFkaaJH86pBuyIFmtGZ1i47zr0FufPneJcQ==', 'gAAAAABg5EQX6qWDg3eBdr4Q2YT6n5Zgy6UwLQFrB-5C-lXjoIu8NjK14zh87B8K_IAhjGN9VRJLskQMN8BtoCo4ZopoS1AqhQ==', 'gAAAAABg5EQXBUIZLqjgVMHauf279CbtMzam4yIaZHSO6-cOC8-0t_VTjgG7mpjcujMgTLeOFwBF_mwIHRpG8HubGMUnjbnQ4A==', 'gAAAAABg5EQXNCIO8OmZA5vsULGgagHsTE-KM5LeEOMjVJ4SzkAtev1DsbYQmST98FmHOUwolR2WbDw2pK11J9C292Jvil_nnQ=='), ('gAAAAABg5EQjygSazmI5VnieVQG1cAsvgsm_u7tHE9X9CevMXqIEcWbe1SOK5wRDza9LXXn_NbCaffJXrq4Dz9BcZh96mh9aqQ==', 'gAAAAABg5EQjEhshfY6M7Yqp4Nm4EE1-Cz7B6P8m7F7jA99qk3D3U3W4ejWz576t5Qg1uBYWclY6NI_SouQ2cGH7PXEdjv_4Gw==', 'gAAAAABg5EQjKzUAlURxaoeAiDAAiVNIvgKE3r8U0fwFQWKtUWSTTAe0RugxV8_QYDqOndxVBxhrRsWDTP1p2Kzbn_do9T7Zfg==', 'gAAAAABg5EQj8UYXm2nqqsrN2Xh5y7L0h1uezTzL-WFZxekurC_Z4VcZfuOVKE5nFlFWfHu6x0OUer1j9N1bIZPVvMY_6_NsSg==', 'gAAAAABg5EQj1_sXfsbRtX24ZnY2rjoorebkZp1010W4wtssa2T6ZJxrzQjHr1ELYbB77Mtm_w_euihEoXigkhZhQXkkTysC6Q==', 'gAAAAABg5EQjeHuoLttV3wRj9DgIVseVvdMmYmWX3-D-UIckrjrizKM6N6OSpq98rPkk9DCutqgW9Jup2KD4bshhCtr8ipO1-g=='), ('gAAAAABg5EVhxeWhA7-oBZPT93nSe3p6vvxqcysxOjdyGyVNQdBwdtM2heHrhNnNSes8yang0Cx9vgBIsU7Yjrfdgz8tOWpK_A==', 'gAAAAABg5EVhdtXop2FNWsZSndOxQ3iEuJQyfI1flL0swLpcJKKTjBlEZhWpwoB3XTO2STYRVrimyEljZs751aVgveF0-rpEpA==', 'gAAAAABg5EVhyWQRkpFOd6Y-_OYqDJX5FVfpYXmd_2SKMZd-EPFYqOu5s47C7lw23zs4eHFVeEF0tSnSpr58rW6hWnxlOnjhnQ==', 'gAAAAABg5EVhCmgEjitk1cutyI5Nn5qYFsh0LRd3-uBJekPrZFoJb6S7hODtwNP-cQoV8R6u5eRLdUOeqffwCKIbBPYA9_lyTQ==', 'gAAAAABg5EVhKZggbtmupc2FqzfbSREmsws-MFYTEX-kGwfw-JJmBOh_7RJnTa-23HWJQtfChSWWuXzsxULJ5vI289c0BVIqrw==', 'gAAAAABg5EVhy8aowZUiuX6M2IPW35XFZNBueXDd_JFal39ViFmg6avpbkvs0mhVzpqVvXjNcMmr3QbNeXf3daLCDa7_KdCmmg=='), ('gAAAAABg5VXtU9o11NkBR4Dno1cCGXc2WRuF3T9pUOKN17qfeJBI-ELjm7WLQj4u040C0cvLzV3CppnMmrJar2uLrJXIXp9v4g==', 'gAAAAABg5VXt51ctmoNo26K4dj1_AsyIYfS2mnAWGIxsYRrEj_69U2J9q5AkyxhJABc8bgwOr6fTZdpkD3AiUHgHD1gnRiPRIg==', 'gAAAAABg5VXt9ro0utsS9cwvrpTFlbGMw9Xs9VJByAUniy_1iyCaeeTg5XWEtZQYo8VIQntl297qa90gmkRt8esm6m_aj5fQDA==', 'gAAAAABg5VXtjAkmDexMLvx8Esx9fU0hVvWInpLq9Vi942qJSSSkxavoFtt-1mO7Vx_VqRn4pzLlMKaf2xf0YJ2pWDB-QSn2AQ==', 'gAAAAABg5VXtF_Vx03hPnIXh38EdTJ5fNo0hBIx1xi7ZTDLTjYA4A9oy7Fha46oo0M4ix8uQ3S0jaCN9WsQtF4sMJ0fKwdO7Iw==', 'gAAAAABg5VXt1eWvT2wzahdBHl1z4oddZOiIiLGpFtbMpFClcLrt5ADt_Qj4eSJNPuf5HIvcLXSI-SZnLrwsO0xA3pp6PvLSJQ==')]

这是代码：

key = Fernet.generate_key()

fernet = Fernet(key)
conn = sqlite3.connect('database.db')
c = conn.cursor()
def get_clients():
    arr = []
    retrieved_vals = ""
    c.execute("SELECT * FROM client")
    print(c.fetchall())
    arr = c.fetchall()
    element2 = ""
  
    for element in arr[0]:
        print(fernet.decrypt(element).decode())

但是我得到了这些错误列表：

Traceback (most recent call last):
  File "C:\Users\d\AppData\Local\Programs\Python\Python38\lib\site-packages\cryptography\fernet.py", line 119, in _verify_signature
    h.verify(data[-32:])
  File "C:\Users\d\AppData\Local\Programs\Python\Python38\lib\site-packages\cryptography\hazmat\primitives\hmac.py", line 74, in verify
    ctx.verify(signature)
  File "C:\Users\d\AppData\Local\Programs\Python\Python38\lib\site-packages\cryptography\hazmat\backends\openssl\hmac.py", line 75, in verify
    raise InvalidSignature("Signature did not match digest.")
cryptography.exceptions.InvalidSignature: Signature did not match digest.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\d\OneDrive\Bureaublad\Assignment8\CDMS.py", line 55, in <module>
    get_clients()
  File "C:\Users\d\OneDrive\Bureaublad\Assignment8\CDMS.py", line 42, in get_clients
    print(fernet.decrypt(element).decode())
  File "C:\Users\d\AppData\Local\Programs\Python\Python38\lib\site-packages\cryptography\fernet.py", line 80, in decrypt
    return self._decrypt_data(data, timestamp, time_info)
  File "C:\Users\d\AppData\Local\Programs\Python\Python38\lib\site-packages\cryptography\fernet.py", line 137, in _decrypt_data
    self._verify_signature(data)
  File "C:\Users\d\AppData\Local\Programs\Python\Python38\lib\site-packages\cryptography\fernet.py", line 121, in _verify_signature
    raise InvalidToken
cryptography.fernet.InvalidToken

我不知道我做错了什么

4

2 回答 2

1

解密期间不能生成新密钥。

key = Fernet.generate_key()

您必须使用与加密相同的密钥。

于 2021-10-01T19:50:29.857 回答
0

由于它是基于密钥的对称加密，因此您必须使用用于加密这些数据的相同密钥。否则你将无法解密它。

于 2021-10-01T20:01:48.480 回答