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crypto.go
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crypto.go
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package funcs
import (
"crypto/hmac"
"crypto/md5"
"crypto/sha1"
"crypto/sha256"
"crypto/sha512"
"encoding/base64"
"encoding/hex"
"fmt"
"hash"
"hash/fnv"
"github.com/rytsh/liz/fstore/generic"
"github.com/spf13/cast"
)
func init() {
generic.CallReg.AddFunction("crypto", generic.ReturnWithFn(Crypto{}))
}
type Crypto struct{}
func (Crypto) Base64(v any) (string, error) {
conv, err := cast.ToStringE(v)
if err != nil {
return "", err
}
return base64.StdEncoding.EncodeToString([]byte(conv)), nil
}
func (Crypto) Base64B(v []byte) string {
return base64.StdEncoding.EncodeToString(v)
}
func (Crypto) Base64Decode(v any) ([]byte, error) {
conv, err := cast.ToStringE(v)
if err != nil {
return nil, err
}
return base64.StdEncoding.DecodeString(conv)
}
func (Crypto) MD5(v any) (string, error) {
conv, err := cast.ToStringE(v)
if err != nil {
return "", err
}
hash := md5.Sum([]byte(conv))
return hex.EncodeToString(hash[:]), nil
}
// SHA1B hashes v and returns its SHA1 checksum in binary.
func (Crypto) MD5B(v []byte) []byte {
hash := md5.Sum(v)
return hash[:]
}
// SHA1 hashes v and returns its SHA1 checksum.
func (Crypto) SHA1(v any) (string, error) {
conv, err := cast.ToStringE(v)
if err != nil {
return "", err
}
hash := sha1.Sum([]byte(conv))
return hex.EncodeToString(hash[:]), nil
}
// SHA1B hashes v and returns its SHA1 checksum in binary.
func (Crypto) SHA1B(v []byte) []byte {
hash := sha1.Sum(v)
return hash[:]
}
// SHA256 hashes v and returns its SHA256 checksum.
func (Crypto) SHA256(v any) (string, error) {
conv, err := cast.ToStringE(v)
if err != nil {
return "", err
}
hash := sha256.Sum256([]byte(conv))
return hex.EncodeToString(hash[:]), nil
}
// SHA256B hashes v and returns its SHA256 checksum in binary.
func (Crypto) SHA256B(v []byte) []byte {
hash := sha256.Sum256(v)
return hash[:]
}
// FNV32a hashes v using fnv32a algorithm.
func (Crypto) FNV32a(v any) (int, error) {
conv, err := cast.ToStringE(v)
if err != nil {
return 0, err
}
algorithm := fnv.New32a()
algorithm.Write([]byte(conv))
return int(algorithm.Sum32()), nil
}
func (Crypto) HMAC(h interface{}, k interface{}, m interface{}) (string, error) {
ha, err := cast.ToStringE(h)
if err != nil {
return "", err
}
var hash func() hash.Hash
switch ha {
case "md5":
hash = md5.New
case "sha1":
hash = sha1.New
case "sha256":
hash = sha256.New
case "sha512":
hash = sha512.New
default:
return "", fmt.Errorf("hmac: %s is not a supported hash function", ha)
}
msg, err := cast.ToStringE(m)
if err != nil {
return "", err
}
key, err := cast.ToStringE(k)
if err != nil {
return "", err
}
mac := hmac.New(hash, []byte(key))
_, err = mac.Write([]byte(msg))
if err != nil {
return "", err
}
return hex.EncodeToString(mac.Sum(nil)[:]), nil
}