39 lines
737 B
Go
39 lines
737 B
Go
package utils
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import (
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"crypto/hmac"
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"crypto/sha512"
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"encoding/base64"
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"math/rand"
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)
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var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
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func RandomString(n int) string {
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s := make([]rune, n)
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for i := range s {
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s[i] = letters[rand.Intn(len(letters))]
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}
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return string(s)
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}
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func SignString(s string, key []byte) string {
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mac := hmac.New(sha512.New, key)
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mac.Write([]byte(s))
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return base64.StdEncoding.EncodeToString(mac.Sum(nil))
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}
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func SignAndCompare(s string, exp string, key []byte) bool {
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mac := hmac.New(sha512.New, key)
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mac.Write([]byte(s))
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decoded, err := base64.StdEncoding.DecodeString(exp)
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if err != nil {
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return false
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}
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return hmac.Equal(mac.Sum(nil), decoded)
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}
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