52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package signature
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import (
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"crypto/sha256"
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"fmt"
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"net/url"
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"sort"
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"strings"
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)
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// BuildStringToSign 构造待签字符串
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// StringToSign = METHOD\nPATH\nCANONICAL_QUERY\nBODY_SHA256\nX-App-Id\nX-Timestamp\nX-Nonce
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func BuildStringToSign(method, path, rawQuery string, body []byte, appId, timestamp, nonce string) string {
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canonical := canonicalQuery(rawQuery)
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bodyHash := sha256Hex(body)
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parts := []string{
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strings.ToUpper(method),
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path,
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canonical,
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bodyHash,
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appId,
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timestamp,
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nonce,
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}
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return strings.Join(parts, "\n")
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}
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func canonicalQuery(rawQuery string) string {
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if rawQuery == "" {
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return ""
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}
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values, err := url.ParseQuery(rawQuery)
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if err != nil {
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return rawQuery
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}
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keys := make([]string, 0, len(values))
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for k := range values {
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keys = append(keys, k)
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}
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sort.Strings(keys)
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parts := make([]string, 0, len(keys))
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for _, k := range keys {
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parts = append(parts, fmt.Sprintf("%s=%s", k, values.Get(k)))
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}
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return strings.Join(parts, "&")
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}
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func sha256Hex(data []byte) string {
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h := sha256.Sum256(data)
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return fmt.Sprintf("%x", h)
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}
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