# Float#

class usencrypt.cipher.Float(value=None, *args, **kwargs)#

Ciphertext real number, stored in 32.32 fixed-point format.

Parameters
• value (float) – The real number to be encrypted. Defaults to None.

• hexstr (str) – The hexadecimal representation of the encrypted float object. Defaults to None.

Examples

To create an encrypted real number object from a non-encrypted real number, we can do the following:

>>> import usencrypt as ue
>>> ue_x = ue.cipher.Float(value=0.75)
>>> ue_x
(0x7f078085fee0) Float: 0x96c525b7cab46206f7966ae4d42bc78d10a7b6405422ee643973a472575a87ab


Similarly, we can encrypt a non-encrypted real number directly using the usencrypt.encrypt() function:

>>> import usencrypt as ue
>>> ue_x = ue.encrypt(0.75, dtype=float)
>>> ue_x
(0x7f078085fee0) Float: 0x96c525b7cab46206f7966ae4d42bc78d10a7b6405422ee643973a472575a87ab


Finally, we can also create an encrypted real number object directly from a hexadecimal string:

>>> import usencrypt as ue
>>> ue_x = ue.cipher.Float(hexstr='0x96c525b7cab46206f7966ae4d42bc78d10a7b6405422ee643973a472575a87ab')
>>> ue_x
(0x7f078085fee0) Float: 0x96c525b7cab46206f7966ae4d42bc78d10a7b6405422ee643973a472575a87ab


METHODS

 Float.conjugate Returns the conjugate of the encrypted real number $$E(x)$$. Float.cos Computes the cosine of the encrypted real number $$E(x)$$ using $$n$$ iterations of the Taylor series approximation method. Float.decrypt Decrypts the encrypted object $$E(x)$$, returning the original non-encrypted $$x$$. Float.encrypt_other Encrypts $$x$$ dynamically with the same dtype as the encrypted object $$E(x)$$. Float.exp Computes the exponential of the encrypted real number $$E(x)$$ using $$n$$ iterations of the Taylor series approximation method. Float.log Computes the natural logarithm of the encrypted real number $$E(x)$$ using the Newton-Raphson method. Float.sin Computes the sine of the encrypted real number $$E(x)$$ using the cosine series approximation method. Float.sqrt Computes the non-negative square-root of the encrypted real number $$E(x)$$.