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Algorithm 属性（ActiveX）

2024-5-18 17:54| 发布者: admin| 查看: 66| 评论: 0|原作者: admin|来自: AutoCAD

指定加密算法的标识符。（已过时）

支持的平台：仅限 Windows

签名

VBA：

object.Algorithm

对象

类型：SecurityParams

此属性应用于的对象。

属性值

只读：不

类型：长; 枚举AcadSecurityParamsConstants

仅指定以下常量。

ACADSECURITYPARAMS_ALGID_RC4： 0x00006801

言论

注意：从基于 AutoCAD-2016 的产品开始，已停止使用密码保护图形文件的功能。

例子

VBA：

Sub Example_Algorithm()
    ' This example encrypts and saves a file.
    Dim sp As AcadSecurityParams
    Set sp = GetInterfaceObject("AutoCAD.SecurityParams.20")
    
    sp.Action = AcadSecurityParamsType.ACADSECURITYPARAMS_ENCRYPT_DATA
    sp.Algorithm = AcadSecurityParamsConstants.ACADSECURITYPARAMS_ALGID_RC4
    sp.KeyLength = 40
    sp.Password = UCase("mypassword") 'AutoCAD converts all passwords to uppercase before applying them
    sp.ProviderName = "Microsoft Base Cryptographic Provider v1.0"
    sp.ProviderType = 1
    
    ThisDrawing.SaveAs "C:\MyDrawing.dwg", , sp
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_Algorithm()
    ;; This example encrypts and saves a drawing file.

    (setq acadObj (vlax-get-acad-object))
    (setq sp (vlax-create-object "AutoCAD.SecurityParams.20"))

    (vla-put-Visible acadObj :vlax-true)

    (vla-put-Action sp ACADSECURITYPARAMS_ENCRYPT_DATA)
    (vla-put-Algorithm sp ACADSECURITYPARAMS_ALGID_RC4)
    (vla-put-KeyLength sp 40)
    (vla-put-Password sp (strcase "mypassword"))
    (vla-put-ProviderName sp "Microsoft Base Cryptographic Provider v1.0")
    (vla-put-ProviderType sp 1)

    (setq doc (vla-get-ActiveDocument acadObj))
    (vla-SaveAs doc "C:\\MyDrawing.dwg" acNative sp)

    (vlax-release-object sp)
)