mirror of
https://gitee.com/durcframework/SOP.git
synced 2025-08-12 07:02:14 +08:00
99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
package common
|
||
|
||
import (
|
||
"crypto"
|
||
"crypto/rand"
|
||
"crypto/rsa"
|
||
"crypto/x509"
|
||
"encoding/base64"
|
||
"encoding/pem"
|
||
"errors"
|
||
"sort"
|
||
"strings"
|
||
)
|
||
|
||
const (
|
||
PEM_BEGIN = "-----BEGIN RSA PRIVATE KEY-----\n"
|
||
PEM_END = "\n-----END RSA PRIVATE KEY-----"
|
||
)
|
||
|
||
func CreateSign(allParams map[string]string, privateKey string, signType string) string {
|
||
signContent := GetSignContent(allParams)
|
||
return Sign(signContent, privateKey, signType)
|
||
}
|
||
|
||
func Sign(signContent string, privateKey string, signType string) string {
|
||
if signType == "RSA" {
|
||
return RsaSign(signContent, privateKey, crypto.SHA1)
|
||
} else if signType == "RSA2" {
|
||
return RsaSign(signContent, privateKey, crypto.SHA256)
|
||
} else {
|
||
panic(errors.New("signType错误"))
|
||
}
|
||
}
|
||
|
||
func RsaSign(signContent string, privateKey string, hash crypto.Hash) string {
|
||
shaNew := hash.New()
|
||
shaNew.Write([]byte(signContent))
|
||
hashed := shaNew.Sum(nil)
|
||
priKey, err := ParsePrivateKey(privateKey)
|
||
if err != nil {
|
||
panic(err)
|
||
}
|
||
|
||
signature, err := rsa.SignPKCS1v15(rand.Reader, priKey, hash, hashed)
|
||
if err != nil {
|
||
panic(err)
|
||
}
|
||
return base64.StdEncoding.EncodeToString(signature)
|
||
}
|
||
|
||
func ParsePrivateKey(privateKey string)(*rsa.PrivateKey, error) {
|
||
privateKey = FormatPrivateKey(privateKey)
|
||
// 2、解码私钥字节，生成加密对象
|
||
block, _ := pem.Decode([]byte(privateKey))
|
||
if block == nil {
|
||
return nil, errors.New("私钥信息错误！")
|
||
}
|
||
// 3、解析DER编码的私钥，生成私钥对象
|
||
priKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
return priKey, nil
|
||
}
|
||
|
||
func FormatPrivateKey(privateKey string) string {
|
||
if !strings.HasPrefix(privateKey, PEM_BEGIN) {
|
||
privateKey = PEM_BEGIN + privateKey
|
||
}
|
||
if !strings.HasSuffix(privateKey, PEM_END) {
|
||
privateKey = privateKey + PEM_END
|
||
}
|
||
return privateKey
|
||
}
|
||
|
||
|
||
/**
|
||
1.筛选并排序
|
||
获取所有请求参数，不包括字节类型参数，如文件、字节流，剔除sign字段，剔除值为空的参数，并按照参数名ASCII码递增排序（字母升序排序），
|
||
如果遇到相同字符则按照第二个字符的键值ASCII码递增排序，以此类推。
|
||
|
||
2.拼接
|
||
将排序后的参数与其对应值，组合成“参数=参数值”的格式，并且把这些参数用&字符连接起来，此时生成的字符串为待签名字符串。
|
||
*/
|
||
func GetSignContent(allParams map[string]string) string {
|
||
keys := make([]string, 0, len(allParams))
|
||
var result []string
|
||
for k := range allParams {
|
||
keys = append(keys, k)
|
||
}
|
||
sort.Strings(keys)
|
||
for _, key := range keys {
|
||
val := allParams[key]
|
||
if len(val) > 0 {
|
||
result = append(result, key + "=" + val)
|
||
}
|
||
}
|
||
return strings.Join(result, "&")
|
||
} |