Openssl进行RSA加密解密(libeay32.dll)

开发环境：DelphiXE11.3

做个笔记

-----------------------

链接1：

链接2

 --------------------------

链接1是某位大佬的源码，被俺收藏了；

链接2是本人从链接1中提取一部分，改了一点点东西；(比如下面的代码

fRSAOpenSSL.PublickEncrypt(aRSAData,memPubKey.Text); //公钥加密（公钥是字符串类型）
链接1中不支持这种加密，链接一中的公钥是文件的形式；

)

只有部分代码，不展示全部代码，只是测试的例子；仅供参考；

Unit

unit Unit2;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ComCtrls, Vcl.ExtCtrls,
  IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient, IdHTTP, System.JSON, RSAOpenSSL,
  DBGridEhGrouping, ToolCtrlsEh, DBGridEhToolCtrls, DynVarsEh, EhLibVCL,
  GridsEh, DBAxisGridsEh, DBGridEh;

type
  TForm2 = class(TForm)
    Panel1: TPanel;
    Panel2: TPanel;
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    edtUserNO: TEdit;
    Button1: TButton;
    Button2: TButton;
    Label1: TLabel;
    Label2: TLabel;
    edtUserPassword: TEdit;
    memPubKey: TMemo;
    memKoten: TMemo;
    IdHTTP1: TIdHTTP;
    memUserPasswordEncrypt: TMemo;
    edtStoreId: TEdit;
    edtMerchantId: TEdit;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    edtAgencyId: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    fRSAOpenSSL : TRSAOpenSSL;
    FToken:string;
    function DealPemStr(const AStr :String):string;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation
uses
  uHttpAbout;
{$R *.dfm}

procedure TForm2.Button1Click(Sender: TObject);
var
  vStr:string;
  JsonRoot :TJSONObject;
  vPem : string;
begin
  fun_Http_Get(vStr);
  JsonRoot := TJSONObject.ParseJSONValue(vStr) as TJSONObject;
  if JsonRoot = nil then
    Exit;
  try
    vPem := JsonRoot.Values['data'].Value;// DealPemStr(JsonRoot.Values['data'].Value);
    memPubKey.Text:=vPem;
    memPubKey.Lines.SaveToFile('PubKey.pem',TEncoding.UTF8)
  finally
    JsonRoot.Free;
  end;

end;

procedure TForm2.Button2Click(Sender: TObject);
var
  aRSAData: TRSAData;
  vPostStr, vStr:string;
  JsonRoot, JsonData, JsonSub1, JsonSub2:TJSONObject;
  JsonArray:TJSONArray;
begin
  aRSAData.DecryptedData := edtUserPassword.Text;
  fRSAOpenSSL.PublickEncrypt(aRSAData,memPubKey.Text); //公钥加密（公钥是字符串类型）
  if aRSAData.ErrorResult = 0 then
    memUserPasswordEncrypt.Text := aRSAData.CryptedData
  else
    memUserPasswordEncrypt.Lines.Add(aRSAData.ErrorMessage);
  JsonData := TJSONObject.Create;
  JsonData.AddPair('account', edtUserNO.Text);//
    JsonData.AddPair('loginType', 3);
  JsonData.AddPair('password', memUserPasswordEncrypt.Text);  //memUserPasswordEncrypt.Text
  vPostStr:= JsonData.ToString;
  fun_Http_Post(vPostStr,vStr);
  JsonRoot := TJSONObject.ParseJSONValue(vStr) as TJSONObject;
  JsonData.Free;
  if JsonRoot = nil then
    Exit;
  try
    if vStr<>'' then
    begin
      edtStoreId.Text := '';
      edtMerchantId.Text := '';
      edtAgencyId.Text := '';
      if JsonRoot.Values['success'].Value='true' then
      begin
        memKoten.Text :=  vStr;
        //ShowMessage(JsonRoot.Values['data'].ToJSON );
        JsonSub1:=TJSONObject.ParseJSONValue(JsonRoot.Values['data'].ToJSON ) as TJSONObject;
        if JsonSub1<> nil then
        begin
          JsonSub2:=TJSONObject.ParseJSONValue(JsonSub1.Values['currentUser'].ToJSON ) as TJSONObject;
          edtStoreId.Text :=''; //JsonRoot.Values['storeId'].Value;
          edtMerchantId.Text := JsonSub2.Values['merchantId'].Value;
          edtAgencyId.Text := JsonSub2.Values['agencyId'].Value;
          FToken:=JsonSub1.Values['token'].Value ;
        end;

        //if  then


      end
      else
      begin
        ShowMessage(JsonRoot.Values['message'].Value+'，登入失败！') ;
      end;
    end;
  finally
    JsonRoot.Free;
    if JsonSub1 <>nil then
      JsonSub1.Free;
    if JsonSub2 <>nil then
      JsonSub2.Free;
  end;

end;

function TForm2.DealPemStr(const AStr: String): string;
var
  vStr, vSubStr:string;
begin
  vStr := AStr;
  if vStr='' then
    Result := '';
  vSubStr := '-----BEGIN PUBLIC KEY-----'#10;
  while Length(vStr)>0 do
  begin
    vSubStr := vSubStr+Copy(vStr,1,64)+#10;
    vStr := Copy(vStr,65,1000);
  end;
  Result := vSubStr+'-----END PUBLIC KEY-----';

  //'-----BEGIN PUBLIC KEY-----'#13#10+JsonRoot.Values['data'].Value+#13#10'-----END PUBLIC KEY-----';
end;

procedure TForm2.FormCreate(Sender: TObject);
var
  aPathToPublickKey: string;
begin
  aPathToPublickKey := 'PubKey.pem';
  fRSAOpenSSL := TRSAOpenSSL.Create(aPathToPublickKey, '');
end;

procedure TForm2.FormDestroy(Sender: TObject);
begin
  fRSAOpenSSL.Free;
end;

end.

 

 

某个键值对不存在时去访问会报错
showmessage(vJsonData.Values['storeId'].Value)//当没有这个键storeId时，这么访问会报错
///////////////////////
var
  vJsonData :TJSONObject;
  vstoreId: string;

  if vJsonData.FindValue('storeId')<>nil then//判断这个storeId键是否存在 
    showmessage(vJsonData.Values['storeId'].Value);


vJsonData.TryGetValue('storeId', vstoreId);//这样写不报错

　　

 

Form

object Form2: TForm2
  Left = 0
  Top = 0
  Caption = 'Form2'
  ClientHeight = 556
  ClientWidth = 822
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -12
  Font.Name = 'Segoe UI'
  Font.Style = []
  OnCreate = FormCreate
  OnDestroy = FormDestroy
  TextHeight = 15
  object Panel1: TPanel
    Left = 0
    Top = 0
    Width = 822
    Height = 41
    Align = alTop
    TabOrder = 0
    ExplicitWidth = 818
    object Label3: TLabel
      Left = 24
      Top = 18
      Width = 37
      Height = 15
      Caption = #38376#24215'ID'
    end
    object Label4: TLabel
      Left = 213
      Top = 18
      Width = 37
      Height = 15
      Caption = #21830#23478'ID'
    end
    object Label5: TLabel
      Left = 410
      Top = 18
      Width = 50
      Height = 15
      Caption = #20195#29702#21830'ID'
    end
    object edtStoreId: TEdit
      Left = 64
      Top = 12
      Width = 128
      Height = 23
      ReadOnly = True
      TabOrder = 0
    end
    object edtMerchantId: TEdit
      Left = 253
      Top = 12
      Width = 134
      Height = 23
      ReadOnly = True
      TabOrder = 1
    end
    object edtAgencyId: TEdit
      Left = 466
      Top = 12
      Width = 153
      Height = 23
      ReadOnly = True
      TabOrder = 2
    end
  end
  object Panel2: TPanel
    Left = 0
    Top = 41
    Width = 822
    Height = 515
    Align = alClient
    Caption = 'Panel2'
    TabOrder = 1
    ExplicitWidth = 818
    ExplicitHeight = 514
    object PageControl1: TPageControl
      Left = 1
      Top = 1
      Width = 820
      Height = 513
      ActivePage = TabSheet1
      Align = alClient
      TabOrder = 0
      object TabSheet1: TTabSheet
        Caption = #30331#20837#39564#35777
        object Label1: TLabel
          Left = 25
          Top = 138
          Width = 65
          Height = 15
          Alignment = taRightJustify
          Caption = #29992#25143#36134#21495#65306
        end
        object Label2: TLabel
          Left = 25
          Top = 167
          Width = 65
          Height = 15
          Alignment = taRightJustify
          Caption = #29992#25143#23494#30721#65306
        end
        object edtUserNO: TEdit
          Left = 93
          Top = 134
          Width = 209
          Height = 23
          TabOrder = 0
          Text = 'SSSSSS'
        end
        object Button1: TButton
          Left = 93
          Top = 3
          Width = 75
          Height = 25
          Caption = #33719#21462#20844#38053
          TabOrder = 1
          OnClick = Button1Click
        end
        object Button2: TButton
          Left = 77
          Top = 241
          Width = 75
          Height = 25
          Caption = #30331#20837
          TabOrder = 2
          OnClick = Button2Click
        end
        object edtUserPassword: TEdit
          Left = 93
          Top = 163
          Width = 209
          Height = 23
          TabOrder = 3
          Text = '12345678'
        end
        object memPubKey: TMemo
          Left = 25
          Top = 34
          Width = 649
          Height = 94
          Lines.Strings = (
            'memPubKey')
          TabOrder = 4
        end
        object memKoten: TMemo
          Left = 16
          Top = 312
          Width = 721
          Height = 168
          Lines.Strings = (
            'memKoten')
          ScrollBars = ssVertical
          TabOrder = 5
        end
        object memUserPasswordEncrypt: TMemo
          Left = 184
          Top = 216
          Width = 553
          Height = 89
          Lines.Strings = (
            'memUserPasswordEncrypt')
          TabOrder = 6
        end
      end
    end
  end
  object IdHTTP1: TIdHTTP
    ProxyParams.BasicAuthentication = False
    ProxyParams.ProxyPort = 0
    Request.ContentLength = -1
    Request.ContentRangeEnd = -1
    Request.ContentRangeStart = -1
    Request.ContentRangeInstanceLength = -1
    Request.Accept = 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'
    Request.BasicAuthentication = False
    Request.UserAgent = 'Mozilla/3.0 (compatible; Indy Library)'
    Request.Ranges.Units = 'bytes'
    Request.Ranges = <>
    HTTPOptions = [hoForceEncodeParams]
    Left = 277
    Top = 92
  end
end