miniflux/crypto/crypto.go at master · kdvy/miniflux

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// Use of this source code is governed by the Apache 2.0

// license that can be found in the LICENSE file.

package crypto // import "miniflux.app/crypto"

import (

"crypto/rand"

"crypto/sha256"

"encoding/base64"

"encoding/hex"

"fmt"

)

// HashFromBytes returns a SHA-256 checksum of the input.

func HashFromBytes(value []byte) string {

sum := sha256.Sum256(value)

return fmt.Sprintf("%x", sum)

}

// Hash returns a SHA-256 checksum of a string.

func Hash(value string) string {

return HashFromBytes([]byte(value))

}

// GenerateRandomBytes returns random bytes.

func GenerateRandomBytes(size int) []byte {

b := make([]byte, size)

if _, err := rand.Read(b); err != nil {

panic(err)

}

return b

}

// GenerateRandomString returns a random string.

func GenerateRandomString(size int) string {

return base64.URLEncoding.EncodeToString(GenerateRandomBytes(size))

}

// GenerateRandomStringHex returns a random hexadecimal string.

func GenerateRandomStringHex(size int) string {

return hex.EncodeToString(GenerateRandomBytes(size))

}