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package utils |
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import ( |
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"crypto" |
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"crypto/hmac" |
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"crypto/md5" |
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"crypto/rand" |
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"crypto/rsa" |
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"crypto/sha1" |
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"crypto/x509" |
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"encoding/base64" |
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"encoding/hex" |
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"hash" |
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"io" |
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rand2 "math/rand" |
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"net/url" |
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"time" |
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) |
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type uuid [16]byte |
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const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" |
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var hookRead = func(fn func(p []byte) (n int, err error)) func(p []byte) (n int, err error) { |
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return fn |
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} |
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var hookRSA = func(fn func(rand io.Reader, priv *rsa.PrivateKey, hash crypto.Hash, hashed []byte) ([]byte, error)) func(rand io.Reader, priv *rsa.PrivateKey, hash crypto.Hash, hashed []byte) ([]byte, error) { |
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return fn |
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} |
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// GetUUId returns a uuid |
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func GetUUId() (uuidHex string) { |
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uuid := newUUId() |
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uuidHex = hex.EncodeToString(uuid[:]) |
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return |
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} |
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// RandStringBytes returns a rand string |
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func RandStringBytes(n int) string { |
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b := make([]byte, n) |
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for i := range b { |
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b[i] = letterBytes[rand2.Intn(len(letterBytes))] |
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} |
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return string(b) |
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} |
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// ShaHmac1 return a string which has been hashed |
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func ShaHmac1(source, secret string) string { |
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key := []byte(secret) |
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hmac := hmac.New(sha1.New, key) |
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hmac.Write([]byte(source)) |
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signedBytes := hmac.Sum(nil) |
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signedString := base64.StdEncoding.EncodeToString(signedBytes) |
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return signedString |
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} |
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// Sha256WithRsa return a string which has been hashed with Rsa |
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func Sha256WithRsa(source, secret string) string { |
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decodeString, err := base64.StdEncoding.DecodeString(secret) |
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if err != nil { |
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panic(err) |
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} |
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private, err := x509.ParsePKCS8PrivateKey(decodeString) |
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if err != nil { |
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panic(err) |
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} |
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h := crypto.Hash.New(crypto.SHA256) |
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h.Write([]byte(source)) |
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hashed := h.Sum(nil) |
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signature, err := hookRSA(rsa.SignPKCS1v15)(rand.Reader, private.(*rsa.PrivateKey), |
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crypto.SHA256, hashed) |
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if err != nil { |
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panic(err) |
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} |
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return base64.StdEncoding.EncodeToString(signature) |
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} |
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// GetMD5Base64 returns a string which has been base64 |
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func GetMD5Base64(bytes []byte) (base64Value string) { |
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md5Ctx := md5.New() |
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md5Ctx.Write(bytes) |
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md5Value := md5Ctx.Sum(nil) |
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base64Value = base64.StdEncoding.EncodeToString(md5Value) |
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return |
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} |
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// GetTimeInFormatISO8601 returns a time string |
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func GetTimeInFormatISO8601() (timeStr string) { |
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gmt := time.FixedZone("GMT", 0) |
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return time.Now().In(gmt).Format("2006-01-02T15:04:05Z") |
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} |
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// GetURLFormedMap returns a url encoded string |
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func GetURLFormedMap(source map[string]string) (urlEncoded string) { |
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urlEncoder := url.Values{} |
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for key, value := range source { |
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urlEncoder.Add(key, value) |
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} |
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urlEncoded = urlEncoder.Encode() |
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return |
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} |
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func newUUId() uuid { |
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ns := uuid{} |
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safeRandom(ns[:]) |
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u := newFromHash(md5.New(), ns, RandStringBytes(16)) |
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u[6] = (u[6] & 0x0f) | (byte(2) << 4) |
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u[8] = (u[8]&(0xff>>2) | (0x02 << 6)) |
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return u |
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} |
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func newFromHash(h hash.Hash, ns uuid, name string) uuid { |
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u := uuid{} |
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h.Write(ns[:]) |
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h.Write([]byte(name)) |
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copy(u[:], h.Sum(nil)) |
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return u |
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} |
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func safeRandom(dest []byte) { |
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if _, err := hookRead(rand.Read)(dest); err != nil { |
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panic(err) |
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} |
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} |
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func (u uuid) String() string { |
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buf := make([]byte, 36) |
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hex.Encode(buf[0:8], u[0:4]) |
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buf[8] = '-' |
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hex.Encode(buf[9:13], u[4:6]) |
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buf[13] = '-' |
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hex.Encode(buf[14:18], u[6:8]) |
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buf[18] = '-' |
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hex.Encode(buf[19:23], u[8:10]) |
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buf[23] = '-' |
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hex.Encode(buf[24:], u[10:]) |
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return string(buf) |
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} |
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aliyun /
credentials-go
