ISCC - Data-Code

A similarity perserving hash for binary data (soft hash).

gen_data_code(stream, bits = ic.core_opts.data_bits)

Create a similarity preserving ISCC Data-Code with the latest standard algorithm.

Parameters:

Name	Type	Description	Default
stream	Stream	Input data stream.	required
bits	int	Bit-length of ISCC Data-Code (default 64).	ic.core_opts.data_bits

Returns:

Type	Description
dict	ISCC Data-Code

gen_data_code_v0(stream, bits = ic.core_opts.data_bits)

Create an ISCC Data-Code with algorithm v0.

Parameters:

Name	Type	Description	Default
stream	Stream	Input data stream.	required
bits	int	Bit-length of ISCC Data-Code (default 64).	ic.core_opts.data_bits

Returns:

Type	Description
dict	ISCC object with Data-Code

soft_hash_data_v0(stream)

Create a similarity preserving Data-Hash digest

Parameters:

Name	Type	Description	Default
stream	Stream	Input data stream.	required

Returns:

Type	Description
bytes	256-bit Data-Hash (soft-hash) digest used as body for Data-Code

DataHasherV0

Incremental Data-Hash generator.

__init__(data = None)

Create a DataHasher

Parameters:

Name	Type	Description	Default
data	Optional[Data]	initial payload for hashing.	None

push(data)

Push data to the Data-Hash generator.

digest()

Calculate 256-bit minhash digest from feature hashes.

code(bits = ic.core_opts.data_bits)

Encode digest as an ISCC Data-Code unit.

Parameters:

Name	Type	Description	Default
bits	int	Number of bits for the ISCC Data-Code	ic.core_opts.data_bits

Returns:

Type	Description
str	ISCC Data-Code