Enum asar::header::HashAlgorithm

#[non_exhaustive]
pub enum HashAlgorithm {
    Sha256,
}

This struct specifies which cryptographic hashing algorithm is used to calculate the hash of a file in the archive.

Currently, only SHA-256 is supported.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Sha256

The SHA-256 hashing algorithm

Implementations

impl HashAlgorithm

pub const fn hash_len(&self) -> usize

Returns the length of the output of the hash function.

Example

use asar::HashAlgorithm;

assert_eq!(HashAlgorithm::Sha256.hash_len(), 32);

pub fn hash(&self, data: &[u8]) -> Vec<u8>

Hashes the given data and returns the hash.

Example

use asar::HashAlgorithm;

let data = b"A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.";
let hash = HashAlgorithm::Sha256.hash(data);
assert_eq!(hash, b"\x4f\x71\x68\x29\xf5\xd2\x95\xcb\x1a\x24\x33\xb5\x99\x39\xa3\xcf\xf7\x77\x2a\x9c\xb9\x13\x2c\x63\xbe\x56\x10\xfe\x52\x08\x65\x90");

pub fn hash_blocks(&self, block_size: usize, data: &[u8]) -> Vec<Vec<u8>>

Splits the given data into blocks of a specific size, and hashes each block.

Example

use asar::HashAlgorithm;

let data = "The ships hung in the sky in much the same way that bricks don't.";
let hash = HashAlgorithm::Sha256.hash_blocks(25, data.as_bytes());
assert_eq!(
	hash,
	vec![
		b"\x9d\x84\xeb\x91\x5a\x78\x2c\xc7\x2e\x74\x6d\x41\x62\x59\xe2\x28\xa2\x79\x03\x04\xf7\x6a\xa4\x20\x03\x3c\xf4\x50\xd7\x84\x26\x6c",
		b"\xdf\x78\xe6\x17\x28\xb6\x61\x8c\x55\x82\xb9\x00\x41\x96\x31\x2c\x24\x85\xe5\x83\xc2\x7b\xba\x8e\x2c\xbb\x1c\x36\x6f\x1a\x73\xad",
		b"\x7f\xda\x3f\x7b\x0e\x6d\x11\xc0\x61\x23\xff\x52\xd6\x10\xe1\xc3\xa3\xb7\x17\x22\xc0\x8b\xef\x0d\x96\x77\xc0\x46\x1c\x83\xf2\x4e"
	]
);

Trait Implementations

impl Clone for HashAlgorithm

fn clone(&self) -> HashAlgorithm

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HashAlgorithm

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HashAlgorithm

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for HashAlgorithm

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromStr for HashAlgorithm

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl Hash for HashAlgorithm

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for HashAlgorithm

fn eq(&self, other: &HashAlgorithm) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for HashAlgorithm

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for HashAlgorithm

impl Eq for HashAlgorithm

impl StructuralEq for HashAlgorithm

impl StructuralPartialEq for HashAlgorithm