sqlmapproject/sqlmap · error · ValueError

Kerberos integrity check failed (wrong key or corrupted ciph

Error message

Kerberos integrity check failed (wrong key or corrupted ciphertext)

What it means

Error "Kerberos integrity check failed (wrong key or corrupted ciphertext)" thrown in sqlmapproject/sqlmap.

Source

Thrown at extra/kerberos/crypto.py:192

        ke = self.dk(key, struct.pack(">IB", usage, 0xAA))
        ki = self.dk(key, struct.pack(">IB", usage, 0x55))
        return ke, ki

    def encrypt(self, key, usage, plaintext, confounder=None):
        ke, ki = self._keys(key, usage)
        if confounder is None:
            confounder = os.urandom(self.blocksize)
        basic = confounder + plaintext
        return self._basicEncrypt(ke, basic) + hmac.new(ki, basic, hashlib.sha1).digest()[:self.macsize]

    def decrypt(self, key, usage, ciphertext):
        if len(ciphertext) < self.blocksize + self.macsize:   # confounder block + HMAC; guards a hostile short reply
            raise ValueError("Kerberos ciphertext too short")
        ke, ki = self._keys(key, usage)
        ct, mac = ciphertext[:-self.macsize], ciphertext[-self.macsize:]
        basic = self._basicDecrypt(ke, ct)
        if not _eq(mac, hmac.new(ki, basic, hashlib.sha1).digest()[:self.macsize]):
            raise ValueError("Kerberos integrity check failed (wrong key or corrupted ciphertext)")
        return basic[self.blocksize:]

def _rc4(key, data):
    """RC4 (ARCFOUR) stream cipher."""

    key, data = bytearray(key), bytearray(data)
    if not key:
        raise ValueError("RC4 requires a non-empty key")
    s = list(range(256))
    j = 0
    for i in range(256):
        j = (j + s[i] + key[i % len(key)]) & 0xff
        s[i], s[j] = s[j], s[i]

    out = bytearray(len(data))
    i = j = 0
    for n in range(len(data)):
        i = (i + 1) & 0xff

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at extra/kerberos/crypto.py:192 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sqlmapproject/sqlmap@0a35b20e39 (2026-08-26). Data as JSON: /api/errors/4b1a6a453caeae49. Report an issue: GitHub.