version: 1.10

package md5

import "crypto/md5"

Overview

Package md5 implements the MD5 hash algorithm as defined in RFC 1321.

MD5 is cryptographically broken and should not be used for secure applications.

Index

• Constants
• func New() hash.Hash
• func Sum(data []byte) [Size]byte

Examples

• New
• New (File)
• Sum

Package files

md5.go md5block.go md5block_decl.go

Constants

const BlockSize = 64

The blocksize of MD5 in bytes.

const Size = 16

The size of an MD5 checksum in bytes.

func New
¶

func New() hash.Hash

New returns a new hash.Hash computing the MD5 checksum. The Hash also implements
encoding.BinaryMarshaler and encoding.BinaryUnmarshaler to marshal and unmarshal
the internal state of the hash.

Example:

h := md5.New()
io.WriteString(h, "The fog is getting thicker!")
io.WriteString(h, "And Leon's getting laaarger!")
fmt.Printf("%x", h.Sum(nil))
// Output: e2c569be17396eca2a2e3c11578123ed

Example:

f, err := os.Open("file.txt")
if err != nil {
    log.Fatal(err)
}
defer f.Close()
h := md5.New()
if _, err := io.Copy(h, f); err != nil {
    log.Fatal(err)
}
fmt.Printf("%x", h.Sum(nil))

func Sum
¶

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

Sum returns the MD5 checksum of the data.

Example:

data := []byte("These pretzels are making me thirsty.")
fmt.Printf("%x", md5.Sum(data))
// Output: b0804ec967f48520697662a204f5fe72