Java默认DES算法使用DES/ECB/PKCS5Padding,而golang认为这种方式是不安全的,所以故意没有提供这种加密方式,那如果我们还是要用到怎么办?下面贴上golang版的DES ECB加密解密代码(默认对密文做了base64处理)。
package main import ( log "ad-service/alog" "bytes" "crypto/des" "encoding/base64") func EntryptDesECB(data, key []byte) string{ if len(key) > 8{ key = key[:8] } block, err :=des.NewCipher(key) if err !=nil { log.Errorf("EntryptDesECB newCipher error[%v]", err) return ""} bs :=block.BlockSize() data =PKCS5Padding(data, bs) if len(data)%bs != 0{ log.Error("EntryptDesECB Need a multiple of the blocksize") return ""} out := make([]byte, len(data)) dst := out for len(data) > 0{ block.Encrypt(dst, data[:bs]) data =data[bs:] dst =dst[bs:] } return base64.StdEncoding.EncodeToString(out) } func DecryptDESECB(d, key []byte) string{ data, err :=base64.StdEncoding.DecodeString(d) if err !=nil { log.Errorf("DecryptDES Decode base64 error[%v]", err) return ""} if len(key) > 8{ key = key[:8] } block, err :=des.NewCipher(key) if err !=nil { log.Errorf("DecryptDES NewCipher error[%v]", err) return ""} bs :=block.BlockSize() if len(data)%bs != 0{ log.Error("DecryptDES crypto/cipher: input not full blocks") return ""} out := make([]byte, len(data)) dst := out for len(data) > 0{ block.Decrypt(dst, data[:bs]) data =data[bs:] dst =dst[bs:] } out = PKCS5UnPadding(out) return string(out) } func PKCS5Padding(ciphertext []byte, blockSize int) []byte{ padding := blockSize - len(ciphertext)%blockSize padtext := bytes.Repeat([]byte{byte(padding)}, padding) returnappend(ciphertext, padtext...) } func PKCS5UnPadding(origData []byte) []byte{ length :=len(origData) unpadding := int(origData[length-1]) return origData[:(length -unpadding)] }