package util
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import (
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"crypto/hmac"
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"crypto/md5"
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"crypto/sha256"
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"encoding/base64"
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"unsafe"
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)
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func ComputeHmacSha256Base64(message string, secret string) string {
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key := []byte(secret)
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h := hmac.New(sha256.New, key)
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h.Write([]byte(message))
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abs := h.Sum(nil)
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return base64.StdEncoding.EncodeToString(abs)
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}
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func Hik_ComputeSignatureBase64(appKey string, appSecret string, httpMethod string, accept string, contentType string, date string, url string) string {
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httpHeaders := httpMethod +"\n" + accept + "\n" + contentType + "\n"+ date +"\n"
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customHeaders := "x-ca-key:"+ appKey +"\n"
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msg := httpHeaders + customHeaders + url
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return ComputeHmacSha256Base64(msg, appSecret)
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}
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type SliceMock struct {
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addr uintptr
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len int
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cap int
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}
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func GetIBytes(v interface{}) []byte {
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len := unsafe.Sizeof(v)
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dataBytes := &SliceMock{
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addr: uintptr(unsafe.Pointer(&v)),
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cap: int(len),
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len: int(len),
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}
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b := *(*[]byte)(unsafe.Pointer(dataBytes))
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return b
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}
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func MD5Base64(s []byte) string {
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sum := md5.Sum(s)
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return base64.StdEncoding.EncodeToString(sum[:])
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}
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