lSignature = base64(hmacsha256(kdate,string_to_sign))
string_to_sign:待签名字符串
kdate:构造动态秘钥
Eop-Authorization = ctyun-eop-ak Header=headers Signature
headers:排序后的签名的请求头名称
若需要签名的请求头为 eop-date 和 host,那么 headers 的值为:
nctyun-eop-ak Header=eop-date;host Signature=xad01/ada
请求所需头部为:
Eop-Authorization,例:ctyun-eop-ak Header= ctyun-eop-request-id;eop-date Signature=xad01/ada
eop-date,例:20211221T163614Z
ctyun-eop-request-id,例:123456789