sha256-hash-from-file

sha256-hash-from-file example

Get an sha256 hash (fingerprint) from an input file using the standard crypto/sha256 package.

Refer to the crypto/sha256 package for more info.

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RUN

go run sha256-hash-from-file.go <FILENAME>
go run sha256-hash-from-file.go test.txt

If you run on test.txt you should get,

7df64288ab2d0bcd15a9c78985965326d4b9d61202d1bc7b55b4abc89698c599

HOW IT WORKS

Take a string plainText and turn into a sha256 hash,

plainTextBytes := []byte(plainText)

// HASH
sha256HashByte := sha256.Sum256(plainTextBytes)

// CONVERT TO STRING
sha256Hash := hex.EncodeToString(sha256HashByte[:])