Golang语言情怀-第68期 Go 语言标准库翻译 crypto/sha256

Constants
func Sum256(data []byte) [Size]byte
func New() hash.Hash
func Sum224(data []byte) (sum224 [Size224]byte)
func New224() hash.Hash

const BlockSize = 64

const Size = 32

const Size224 = 28

func Sum256(data []byte) [Size]byte

package main

import (
    "crypto/sha256"
    "fmt"
)

func main() {
    sum := sha256.Sum256([]byte("hello world\n"))
    fmt.Printf("%x", sum)
}

func New() hash.Hash

package main

import (
    "crypto/sha256"
    "fmt"
)

func main() {
    h := sha256.New()
    h.Write([]byte("hello world\n"))
    fmt.Printf("%x", h.Sum(nil))
}

package main

import (
    "crypto/sha256"
    "fmt"
    "io"
    "log"
    "os"
)

func main() {
    f, err := os.Open("file.txt")
    if err != nil {
        log.Fatal(err)
    }
    defer f.Close()

    h := sha256.New()
    if _, err := io.Copy(h, f); err != nil {
        log.Fatal(err)
    }

    fmt.Printf("%x", h.Sum(nil))
}

func Sum224(data []byte) (sum224 [Size224]byte)

func New224() hash.Hash