encryption.go

package phpfuncs

import (
	"crypto/md5"
	"crypto/sha1"
	"encoding/base64"
	"encoding/hex"
	"io/ioutil"
)

// Base64Encode - Encodes data with MIME base64.
// Original : https://www.php.net/manual/en/function.base64-encode.php
// Encodes given data with base64.
func Base64Encode(v string) string {
	return base64.StdEncoding.EncodeToString([]byte(v))
}

// Base64Decode - Decodes data encoded with MIME base64.
// Original : https://www.php.net/manual/en/function.base64-decode.php
// Decodes a base64 encoded data.
func Base64Decode(v string) (string, error) {
	Base64, Err := base64.StdEncoding.DecodeString(v)
	return string(Base64), Err
}

// MD5 - Calculate the md5 hash of a string.
// Original : https://www.php.net/manual/en/function.md5.php
// Calculates the MD5 hash of str using the RSA Data Security, Inc. MD5 Message-Digest Algorithm.
func MD5(v string) string {
	hash := md5.Sum([]byte(v))
	return hex.EncodeToString(hash[:])
}

// MD5File - Calculates the md5 hash of a given file.
// Original : https://www.php.net/manual/en/function.md5-file.php
// Calculates the MD5 hash of the file specified by the filename parameter using the RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash. The hash is a 32-character hexadecimal number.
func MD5File(v string) string {
	file, err := ioutil.ReadFile(v)
	if err != nil {
		return ""
	}

	hash := md5.Sum(file)
	return hex.EncodeToString(hash[:])
}

// Sha1 - Calculate the sha1 hash of a string.
// Original : https://www.php.net/manual/en/function.sha1.php
// Calculates the sha1 hash of str using the US Secure Hash Algorithm 1.
func Sha1(v string) string {
	hash := sha1.Sum([]byte(v))
	return hex.EncodeToString(hash[:])
}

// Sha1File - Calculate the sha1 hash of a file.
// Original : https://www.php.net/manual/en/function.sha1-file.php
// Calculates the sha1 hash of the file specified by filename using the US Secure Hash Algorithm 1, and returns that hash. The hash is a 40-character hexadecimal number.
func Sha1File(v string) string {
	file, err := ioutil.ReadFile(v)
	if err != nil {
		return ""
	}

	hash := sha1.Sum(file)
	return hex.EncodeToString(hash[:])
}