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Crypto

The Crypto module provides simple, secure, and efficient APIs for generating cryptographic hashes from data.
Currently, it supports three hashing algorithms: SHA-256, SHA-384, and SHA-512.

The module is designed for use with the Data class.
You can easily hash any text, binary data, or file content with just a few lines of code.

Functions

sha256(data: Data): string

Computes the SHA-256 hash of the given Data and returns the result as a hexadecimal string.

sha384(data: Data): string

Computes the SHA-384 hash of the given Data and returns the result as a hexadecimal string.

sha512(data: Data): string

Computes the SHA-512 hash of the given Data and returns the result as a hexadecimal string.

Usage Examples

Hash a simple string

1const data = Data.fromString('Hello, world!')
2if (data) {
3  const hash = Crypto.sha256(data)
4  console.log('SHA-256 Hash:', hash)
5}

Hash file contents

1const filePath = '/path/to/file.txt'
2const fileData = Data.fromFile(filePath)
3if (fileData) {
4  const hash = Crypto.sha384(fileData)
5  console.log('SHA-384 File Hash:', hash)
6}

Hash an image (JPEG)

1// Assume you have a UIImage object
2const imageData = Data.fromJPEG(myImage, 0.8)
3if (imageData) {
4  const hash = Crypto.sha512(imageData)
5  console.log('SHA-512 Image Hash:', hash)
6}

Chain hash multiple steps

1const original = Data.fromString('First Step')
2if (original) {
3  const firstHash = Crypto.sha256(original)
4  const secondData = Data.fromString(firstHash)
5  if (secondData) {
6    const finalHash = Crypto.sha512(secondData)
7    console.log('Chained Hash (SHA-512):', finalHash)
8  }
9}
Outline