Ed25519Signature

class cometa.cryptography.ed25519_signature.Ed25519Signature(ptr)[source]

Bases: object

Represents an Ed25519 digital signature.

Ed25519 signatures are 64 bytes and are used throughout Cardano for transaction signing, stake pool registration, and other cryptographic operations requiring authentication.

Example

>>> sig = Ed25519Signature.from_hex("00" * 64)
>>> len(sig.to_bytes())
64

__init__(ptr)[source]

Return type:: None

__enter__()[source]

Return type:: Ed25519Signature

__exit__(exc_type, exc_val, exc_tb)[source]

Return type:: None

__repr__()[source]

Return repr(self).

Return type:: str

classmethod from_bytes(data)[source]

Creates an Ed25519 signature from raw bytes.

Parameters:: data (bytes | bytearray) – The signature as raw bytes (64 bytes).
Returns:: A new Ed25519Signature instance.
Raises:: CardanoError – If creation fails.
Return type:: Ed25519Signature

Example

>>> sig = Ed25519Signature.from_bytes(bytes(64))

classmethod from_hex(hex_string)[source]

Creates an Ed25519 signature from a hexadecimal string.

Parameters:: hex_string (str) – The signature as a hexadecimal string (128 characters).
Returns:: A new Ed25519Signature instance.
Raises:: CardanoError – If creation fails or hex is invalid.
Return type:: Ed25519Signature

Example

>>> sig = Ed25519Signature.from_hex("00" * 64)

to_bytes()[source]

Returns the signature as raw bytes.

Returns:: The 64-byte signature.
Return type:: bytes

to_hex()[source]

Returns the signature as a hexadecimal string.

Returns:: The signature as a 128-character hex string.
Return type:: str

__eq__(other)[source]

Checks equality with another Ed25519Signature.

Parameters:: other (object)
Return type:: bool

__hash__()[source]

Returns a Python hash for use in sets and dicts.

Return type:: int

__str__()[source]

Returns the hexadecimal representation.

Return type:: str