# Tari Utilities
[](https://coveralls.io/github/tari-project/tari_utilities)
This crate is part of the [Tari Cryptocurrency](https://tari.com) project.
A set of useful and commonly used utilities that are used in several places in the Tari project.
## bit
Functions for conversion between integer and bit array.
## byte_array
A trait that offers representation of data types as a byte array or hex string. See also extend_bytes and message_format.
## convert
Function which tries to convert a series of `T`s to `U`s.
## encoding
A trait that handles base58 encoding and decoding.
## epoch_time
Data structure representing time as a `u64`.
## extend_bytes
A trait allows us to call append_raw_bytes and get the raw bytes of the type.
## fixed_set
Data structure describing a fixed set of size _n_.
## hash
A simple `Hashable` trait which is used to describe how an object should be hashed.
## hex
Functions for conversion between binary and hex string.
## locks
Macros for RwLock.
## message_format
A `MessageFormat` trait that handles conversion from and to binary, json, or base64.
## Hidden
A wrapper type for concealing sensitive information in logs.
# Feature Flags
Some of the utilities can be removed with feature flags:
## std
This will allow epoch_time, encoding and safe_array
## zero
This will include zeroize support
## serialize
This will include support for serde
## borsh
This will include support for borsh
## default
This will include all feature flags.