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42 lines
794 B
42 lines
794 B
2 months ago
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package requestbuilder
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/base64"
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"strings"
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)
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type Signer struct {
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key []byte
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}
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func (p *Signer) Init(key string) *Signer {
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p.key = []byte(key)
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return p
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}
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func (p *Signer) Sign(method string, host string, path string, parameters string) string {
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if method == "" || host == "" || path == "" || parameters == "" {
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return ""
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}
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var sb strings.Builder
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sb.WriteString(method)
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sb.WriteString("\n")
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sb.WriteString(host)
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sb.WriteString("\n")
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sb.WriteString(path)
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sb.WriteString("\n")
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sb.WriteString(parameters)
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return p.sign(sb.String())
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}
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func (p *Signer) sign(payload string) string {
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hash := hmac.New(sha256.New, p.key)
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hash.Write([]byte(payload))
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result := base64.StdEncoding.EncodeToString(hash.Sum(nil))
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return result
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}
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