package rsa

import (
	rrd "crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"encoding/pem"
)

func RSADecryptFactory(key string) func([]byte) []byte {
	return func(cipherTxt []byte) []byte {
		privateKey := []byte(key)
		//通过私钥解密
		block, _ := pem.Decode(privateKey)
		//解析私钥
		pri, err := x509.ParsePKCS1PrivateKey(block.Bytes)
		_ = err
		//解密
		bits, err := rsa.DecryptPKCS1v15(rrd.Reader, pri, cipherTxt)
		_ = err
		//返回明文
		return bits
	}
}