hoteas
7f7b585ffb
- 在应用程序中新增对达梦数据库（DM）的配置和连接支持 - 实现 SetDmDB 函数以配置达梦数据库连接 - 更新数据库操作逻辑，支持达梦特有的 SQL 语法和功能 - 在相关文件中添加达梦数据库的处理逻辑，包括表创建、数据插入和查询 - 更新 go.mod 和 go.sum 文件以引入达梦数据库驱动 - 增强文档，详细说明达梦数据库的配置和使用方法
70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
/*
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* Copyright (c) 2000-2018, 达梦数据库有限公司.
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* All rights reserved.
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*/
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// go官方没有实现ecb加密模式
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package security
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import (
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"crypto/cipher"
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)
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type ecb struct {
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b cipher.Block
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blockSize int
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}
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func newECB(b cipher.Block) *ecb {
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return &ecb{
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b: b,
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blockSize: b.BlockSize(),
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}
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}
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type ecbEncrypter ecb
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func NewECBEncrypter(b cipher.Block) cipher.BlockMode {
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return (*ecbEncrypter)(newECB(b))
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}
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func (x *ecbEncrypter) BlockSize() int { return x.blockSize }
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func (x *ecbEncrypter) CryptBlocks(dst, src []byte) {
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if len(src)%x.blockSize != 0 {
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panic("dm/security: input not full blocks")
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}
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if len(dst) < len(src) {
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panic("dm/security: output smaller than input")
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}
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if InexactOverlap(dst[:len(src)], src) {
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panic("dm/security: invalid buffer overlap")
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}
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for bs, be := 0, x.blockSize; bs < len(src); bs, be = bs+x.blockSize, be+x.blockSize {
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x.b.Encrypt(dst[bs:be], src[bs:be])
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}
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}
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type ecbDecrypter ecb
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func NewECBDecrypter(b cipher.Block) cipher.BlockMode {
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return (*ecbDecrypter)(newECB(b))
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}
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func (x *ecbDecrypter) BlockSize() int { return x.blockSize }
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func (x *ecbDecrypter) CryptBlocks(dst, src []byte) {
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if len(src)%x.blockSize != 0 {
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panic("dm/security: input not full blocks")
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}
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if len(dst) < len(src) {
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panic("dm/security: output smaller than input")
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}
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if InexactOverlap(dst[:len(src)], src) {
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panic("dm/security: invalid buffer overlap")
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}
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for bs, be := 0, x.blockSize; bs < len(src); bs, be = bs+x.blockSize, be+x.blockSize {
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x.b.Decrypt(dst[bs:be], src[bs:be])
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}
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}
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