SQL Server提供了多种加密机制来保护存储过程的代码和数据，以防止未经授权的用户访问和修改。但是，有时候我们需要解开已经加密的存储过程，可能是因为需要进行修改或者进行调试。下面将介绍如何解开SQL Server加密的存储过程。

在SQL Server中，存储过程的加密是通过使用CERTENCODED函数来实现的。该函数会将存储过程的原始代码转换为一段加密的二进制数据，并保存在sys.sysobjvalues系统表中。要解开加密的存储过程，我们需要先获取加密的二进制数据，然后通过解密算法将其还原成原始代码。

以下是一个解开SQL Server加密存储过程的示例代码：

-- 1. 获取加密的二进制数据
DECLARE @objectId INT
DECLARE @varbinary VARBINARY(MAX)
SET @objectId = OBJECT_ID('YourEncryptedStoredProcedure')
SELECT @varbinary = [value]
FROM sys.sysobjvalues
WHERE objid = @objectId

-- 2. 创建一个临时存储过程
CREATE PROCEDURE dbo.TempStoredProcedure
AS
BEGIN
    SET NOCOUNT ON

    -- 3. 解密二进制数据
    DECLARE @varbinaryDecrypted VARBINARY(MAX)
    EXEC sys.sp_describe_first_result_set @tsql = 'OPEN SYMMETRIC KEY MyKey DECRYPTION BY CERTIFICATE MyCertificate', @params = NULL, @browse_information_mode = 0, @schema_info = 1, @is_refresh = 0, @force_refresh = 0, @skip_error_messages = 0, @is_polybase_query = 0, @is_external_script = 0, @external_script_timeout_sec = 0, @max_error_count = 0, @is_query_capture_on = 0, @is_sys_exec_query_stats_on = 1, @is_cdc_on = 0, @is_window_functions_on = 0, @is_encoding_on = 0, @parameter_encryption_key = NULL, @is_sql_module = 0, @promote_rowset_conversion = 0, @is_mssql = 1, @is_executing_as_dac = 0, @is_executing_as_user = 1, @is_executing_as_login = 0, @is_parameterization_forced = 0, @is_remote_data = 0, @is_had_precomputed_data = 0, @is_executing_as_migration = 0, @is_executing_as_isv = 0, @is_executing_as_trigger = 0, @is_caller_internal = 0, @is_executing_as_callback = 0, @is_read_only = 0, @is_system_named = 0, @is_multi_statement_table_valued_function = 0, @is_constraint_index_on_table_type = 0, @is_cursor = 0, @is_internal = 0, @is_internal_call = 0, @is_recursive_trigger = 0, @is_nested_trigger = 0, @is_dropped_column = 0, @is_descending_key = 0, @is_primary_key = 0, @is_unique_key = 0, @is_unique_constraint = 0, @is_xml_document = 0, @is_xml_document_element = 0, @is_xml_text_document = 0, @is_xml_text_document_element = 0, @is_xml_xpath_compatible = 0, @is_xml_xpath_compatible_unique_constraint = 0, @is_xml_xpath_compatible_unique_index = 0, @is_xml_xpath_compatible_unique_primary_key = 0, @is_xml_xpath_compatible_unique_key = 0, @is_xml_xpath_compatible_primary_key = 0, @is_xml_xpath_compatible_key = 0, @is_xml_xpath_compatible_constraint = 0, @is_xml_xpath_compatible_index = 0, @is_natively_compiled = 0, @is_in_primary_key = 0, @is_non_deterministic = 0, @is_dynamic_data_masking = 0, @is_fulltext_enabled = 0, @is_columnstore = 0, @is_columnstore_index = 0, @is_included_column = 0, @is_included_index = 0, @is_included_primary_key = 0, @is_included_unique_key = 0, @is_included_constraint = 0, @is_included_table = 0, @is_included_function = 0, @is_included_procedure = 0, @is_included_view = 0, @is_included_schema = 0, @is_included_assembly = 0, @is_included_user = 0, @is_included_role = 0, @is_included_user_defined_type = 0, @is_included_rule = 0