crypto.sha256 #

Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved. Use of this source code is governed by an MIT license that can be found in the LICENSE file. Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-4. Based off: https://github.com/golang/go/tree/master/src/crypto/sha256 Last commit: https://github.com/golang/go/commit/3ce865d7a0b88714cc433454ae2370a105210c01

fn hexhash(s string) string

hexhash returns a hexadecimal SHA256 hash sum string of s.

assert sha256.hexhash('V') == 'de5a6f78116eca62d7fc5ce159d23ae6b889b365a1739ad2cf36f925a140d0cc'

fn hexhash_224(s string) string

hexhash_224 returns a hexadecimal SHA224 hash sum string of s.

fn new() &Digest

new returns a new Digest (implementing hash.Hash) computing the SHA256 checksum.

fn new224() &Digest

new224 returns a new Digest (implementing hash.Hash) computing the SHA224 checksum.

fn sum(data []u8) []u8

sum returns the SHA256 checksum of the bytes in data.

assert sha256.sum('V'.bytes()).len > 0 == true

fn sum224(data []u8) []u8

sum224 returns the SHA224 checksum of the data.

fn sum256(data []u8) []u8

sum256 returns the SHA256 checksum of the data.

fn (mut d Digest) free()

free the resources taken by the Digest d

fn (mut d Digest) reset()

reset the state of the Digest d

fn (mut d Digest) copy_from(src &Digest)

copy_from overwrites the state of d with the state of src, without allocating. Afterwards d computes the same kind of checksum (SHA256 or SHA224) as src, and continues from the data that was written to src so far.

fn (mut d Digest) write(p_ []u8) !int

write writes the contents of p_ to the internal hash representation.

fn (d &Digest) sum(b_in []u8) []u8

sum returns the SHA256 or SHA224 checksum of digest with the data.

fn (mut d Digest) checksum_into(mut out []u8)

checksum_into finalizes d and writes its checksum into the first d.size() bytes of out, without allocating. It panics if out is shorter than d.size(). Like sum256, it consumes the state of d: call reset() or copy_from() before writing to d again.

fn (d &Digest) size() int

size returns the size of the checksum in bytes.

fn (d &Digest) block_size() int

block_size returns the block size of the checksum in bytes.