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utils.go
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utils.go
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package utils
import (
"fmt"
"io"
"io/ioutil"
"os"
"strings"
)
//Signer 签名器接口
type Signer interface {
// Sign 签名一个无过期的token
Sign(payload map[string]interface{}, aud string, iss string) (string, error)
// ExpSign 签名一个会过期的token
ExpSign(payload map[string]interface{}, aud string, iss string, exp int64) (string, error)
// SignJSON 为json签名一个无过期的token
SignJSON(jsonpayload []byte, aud string, iss string) (string, error)
// ExpSignJSON 为json签名一个会过期的token
ExpSignJSON(jsonpayload []byte, aud string, iss string, exp int64) (string, error)
// SignJSONString 为json字符串签名一个无过期的token
SignJSONString(jsonstringpayload string, aud string, iss string) (string, error)
// ExpSignJSONString 为json字符串签名一个会过期的token
ExpSignJSONString(jsonstringpayload string, aud string, iss string, exp int64) (string, error)
}
//Verifier 验证器接口
type Verifier interface {
// Verify 用Verifier对象验签
Verify(tokenstring string) (map[string]interface{}, error)
}
// AsymmetricMethods 非对称加密支持的算法范围
var AsymmetricMethods = map[string]bool{
"RS256": true,
"RS384": true,
"RS512": true,
"ES256": true,
"ES384": true,
"ES512": true,
}
// SymmetricMethods 对称加密支持的算法范围
var SymmetricMethods = map[string]bool{
"HS256": true,
"HS384": true,
"HS512": true,
}
// AsymmetricMethods 非对称加密支持的算法范围
var CenterSupportedMethods = map[string]bool{
"RS256": true,
"HS256": true,
}
// IsEs 判断文件是不是ES方法加密
func IsEs(method string) bool {
return strings.HasPrefix(method, "ES")
}
// IsRs 判断文件是不是RS方法加密
func IsRs(method string) bool {
return strings.HasPrefix(method, "RS") || strings.HasPrefix(method, "PS")
}
// LoadData 读取并加载文件数据
func LoadData(p string) ([]byte, error) {
if p == "" {
return nil, fmt.Errorf("No path specified")
}
var rdr io.Reader
if p == "-" {
rdr = os.Stdin
} else if p == "+" {
return []byte("{}"), nil
} else {
if f, err := os.Open(p); err == nil {
rdr = f
defer f.Close()
} else {
return nil, err
}
}
return ioutil.ReadAll(rdr)
}