concrete/docs/dev/api/concrete.compiler.tfhers_int.md

module concrete.compiler.tfhers_int

Import and export TFHErs integers into Concrete.

---

class TfhersExporter

A helper class to import and export TFHErs big integers.

---

method export_int

export_int(value: TransportValue, info: TfhersFheIntDescription) → bytes

Convert Concrete value to TFHErs and serialize it.

Args:

• value (Value): value to export
• info (TfhersFheIntDescription): description of the TFHErs integer to export to

Raises:

• TypeError: if wrong input types

Returns:

• bytes: converted and serialized TFHErs integer

---

method import_int

import_int(
    buffer: bytes,
    info: TfhersFheIntDescription,
    keyid: int,
    variance: float,
    shape: Tuple[int, ]
) → TransportValue

Unserialize and convert from TFHErs to Concrete value.

Args:

• buffer (bytes): serialized TFHErs integer
• info (TfhersFheIntDescription): description of the TFHErs integer to import
• keyid (int): id of the key used for encryption
• variance (float): variance used for encryption
• shape (Tuple[int, ...]): expected shape

Raises:

• TypeError: if wrong input types

Returns:

• TransportValue: unserialized and converted value