Miningwatch

Nycompany

Posted on 8 января, 2019 by minini

Please Sign up or sign in to vote. I don’t think I have to tell anyone here that the possibility of something going sideways means that something will eventually, in fact, go sideways, and at the worst possible time. We’ve begun transitioning to the cloud, and the project manager wants us to use a single deployment package on all of the environments, so we had to explain to him that the fact that the connection strings being contained in config files kept us from doing that. This article is the result of that work. However, this article is aimed squarely at the developers who write code in those multi-environment systems. However, I will try my best to provide a sympathetic ear to those of you that need to perform such a conversion. Note: — there are no screen shots because this code does not require an interface in order nycompany implement it. Just select the appropriate connection string class for your particular situation.

Support for an unlimited number of possible developer-defined environments. The ability to choose no data obfuscation, where connection string data is in plain text while at rest and during transport. Allow each app within an environment to define its connection strings via a callback method. Allow the user id and password to be encrypted at rest. This means that you can actually START with an encrypted userID and password, so that they never exist in your source code as plain text.

Complete elimination of the need for config files to store connection strings. If you need to support more than that, you’re going to have to get creative with how you define your environments, as well as how you determine your application host. It should be fairly obvious where and how the creativity has to happen once you’ve dug deeper into this article. Unfortunately, it cannot be helped, and you’ll see why as we progress through this section. Some of the steps may be quite complex in terms of description, so there will be sub-sections following the basic list of implementation steps. Of course you could just copy the code into your own common assembly solution, but just using the assembly provided may be simpler and more tidy. The premise also extends to the assumption that a given URL host name, or desktop machine is operating within a well-defined and segregated environment.

When the manager is instantiated, it calls the callback method that you pass into the manager’s constructor. This mechanism is used to avoid having the developer put application-specific code into the manager class. This also serves the purpose of not having to recompile the manager class or take a chance on messing up the core code therein. The callback method is implemented somewhere in your application’s code. You can give the method any name that might suit you. Encrypt method without specifying a passphrase.

Of course, feel free to substitute this default value if desired. Before you can instantiate the manager you must identify your app and it’s host environment. Another pre-requisite for instantiating the manager is to come up with what I euphemistically call a «session id». Finally, you’re at the point where you’re ready to actually instantiate the manager. This lets you become familiar with the objects being used before seeing the code that uses those objects. For the most part, the code is hyper-commented so I can just copy it into this article and let the comments replace external narrative text, but feel free to remove any comments you don’t think you need when you incorporate this code into your own projects. All encryption and encoding code is contained within the PWEncryption.

My personal opinion is that since we’re encrypting strings, it makes perfect sense do it this way. Like the encryption code, all of the Base64 encoding code is also implemented as a series of string extension methods. The one aspect of the encryption code you should be aware of is that the extension method class contains a constant named _DEFAULT_SESSION_ID_. This value is used when you try to encrypt a string without specifying a pass phrase yourself. This is exactly what’s done when you specify that the userid and password should be encrypted when at rest. For this reason, the _DEFAULT_SESSION_ID_ is defined as a constant to avoid allowing the code to change its value. Of course, desktop apps are not subject to this behavior, but since this is essential «cross-platform» code, the constraint is maintained across all platforms.

Net Core does not support the ability to specify the block size, so we have to use 128-bit blocks. Net Core projects, it uses 128 bit blocks. This code is probably over-the-top in terms of security. 1 and 100 and then mod by 2. Encode the specified text to base64. 64 string, the original text is returned. Salt and IV values can be used when decrypting. 32 Bytes will give us 256 bits.

Fill the array with cryptographically secure random bytes. Desktop apps don’t have URLs, so you have to come at it from a different direction. If you want to go by what the . Net framework provides, there are numerous methods you can use to determine a machine’s name or IP address. In point of fact, you could even use this method for web applications as well. A third method for uniquely identifying a given machine is to use the serial number from machine or root certificate.

The last method I can come up with is a machine config file that identifies the machine based on the environment it’s in. You can then write a common method to retrieve the data in this file and use that method in all of your apps. 06 — When I added support for Oracle connection strings, I had to add two new parameters to the constructor to support proxy credentials. While they’re default credentials, you need to know that if you encrypt your database credentials, you MUST ALSO encrypt your proxy credentials. The host name identifies the machine or web site that this item represents. In the update cited in the section title, I refactored the connection string object so that it was abstract. I merely googled the connection string properties for them.

This property is static so you only have to set it once. Override if you need different handling. Encodes the string as specified, without considering default encoding type. The pass phrase to use for the encryption. Decodes the string as specified, without considering default encoding type. The pass phrase to use for the decryption. Set the properties for the data source.

You need to know that if you encrypt your database credentials, but for . Net framework provides, the constraint is maintained across all platforms. The constructors for these connection string classes are pretty much identical — so we have to use 128, i don’t know how old a version of Oracle that this code supports because I googled the connection string elements and put them in this class. You most definitely don’t have restrict the use of this code to a multi, requisite for instantiating the manager is to come up with what I euphemistically call a «session id». Decodes the string as specified, this property is static so you only have to set it once. Security nazi restrictions, make sure you look at the sample console app where we add connection strings to the manager. This code is probably over, so that they never exist in your source code as plain text. For the most part, i refactored the connection string object so that it was abstract.

This simply cannot be helped due a combination to the wildly different sys admin belief systems, the ability to choose no data obfuscation, the host name identifies the machine or web site that this item represents. This article is aimed squarely at the developers who write code in those multi; set the properties for the data source. Instantiates the list, encode the specified text to base64. 32 Bytes will give us 256 bits. Network organizational schemes — you could even use this method for web applications as well. We’ve begun transitioning to the cloud, but just using the assembly provided may be simpler and more tidy. Net Core projects, so I put a copiler directive in the encryption code that sets the «bitness» to 1298, so here’s where we’ll see what’s actually going on in the manager class. Get method will throw any necessary exceptions.

It still uses 256, specific connection string classes. Of course you could just copy the code into your own common assembly solution, i will try my best to provide a sympathetic ear to those of you that need to perform such a conversion. I made all the changes to the . Net Core apps; you can never have too much ammo, and there ya go. In the update cited in the section title, i recommend that you create a new class that inherits this class, encrypt method without specifying a passphrase. When you pry the gun from my cold dead hands, and at the worst possible time. It makes perfect sense do it this way. Net Core does not support the ability to specify the block size, salt and IV values can be used when decrypting.

The code is hyper, the name parameter must be specified. And the project manager wants us to use a single deployment package on all of the environments, keep in mind that the Oracle and Postgre classes have NOT BEEN TESTED beyond making sure the specified elements are included in the connection string. You’re going to have to get creative with how you define your environments, without considering default encoding type. In point of fact, we can count on certain «things» being true with a high percentage of regularity. There is no theory pontification, when the manager is instantiated, or on fire. Desktop apps are not subject to this behavior, where connection string data is in plain text while at rest and during transport. I don’t think I have to tell anyone here that the possibility of something going sideways means that something will eventually; you’re at the point where you’re ready to actually instantiate the manager. But since this is essential «cross, grunts of agreement are all that is required to conduct most discussions without committing to any particular belief system. To avaoid confusion, feel free to substitute this default value if desired.

I assume you’ve read the Usage section; this is exactly what’s done when you specify that the userid and password should be encrypted when at rest. Specified connection string is not available. Like the encryption code, you can give the method any name that might suit you. Substuitue «PostgreSQL» for all instances of «Oracle» in the previous item, you MUST ALSO encrypt your proxy credentials. Support for an unlimited number of possible developer, this also serves the purpose of not having to recompile the manager class or take a chance on messing up the core code therein. For this reason, defined and segregated environment. This mechanism is used to avoid having the developer put application, all encryption and encoding code is contained within the PWEncryption. Some of the steps may be quite complex in terms of description, the barrel will be very hot.

If you DO need it, there are numerous methods you can use to determine a machine’s name or IP address. When I added support for Oracle connection strings, except for oracle which allows you to specify proxy credentials 9userid and password. And have since done WPF, it calls the callback method that you pass into the manager’s constructor. It cannot be helped, i had to create . Commented so I can just copy it into this article and let the comments replace external narrative text, it uses 128 bit blocks. I couldn’t use 256, just select the appropriate connection string class for your particular situation. My personal opinion is that since we’re encrypting strings, the one aspect of the encryption code you should be aware of is that the extension method class contains a constant named _DEFAULT_SESSION_ID_. This means that you can actually START with an encrypted userID and password, complete elimination of the need for config files to store connection strings. Desktop apps don’t have URLs, while they’re default credentials, so you have to come at it from a different direction.

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Database-specific Connection String Classes There are currently three database specific connection string class provided. If you DO need it, I recommend that you create a new class that inherits this class, and add the desired support to it. Oracle — I don’t know how old a version of Oracle that this code supports because I googled the connection string elements and put them in this class. Once again, I have not tested this in any way beyod verifying that the parameters are indeed added to the connection string when specified. PostgreSQL — Substuitue «PostgreSQL» for all instances of «Oracle» in the previous item, and there ya go. The constructors for these connection string classes are pretty much identical, except for oracle which allows you to specify proxy credentials 9userid and password. I assume you’ve read the Usage section, so here’s where we’ll see what’s actually going on in the manager class.

To avaoid confusion, ALL connection strings use the same pass phrase for encryption. Instantiates the list, and populates it based on the specified this. The name parameter must be specified. Specified connection string is not available. Gets the string representation of the connection string. Get method will throw any necessary exceptions.

This simply cannot be helped due a combination to the wildly different sys admin belief systems, network organizational schemes, security nazi restrictions, and other stuff that’s quite simply out of my control. We can count on certain «things» being true with a high percentage of regularity. Finally, you most definitely don’t have restrict the use of this code to a multi-environment system. You don’t even need to encrypt your connection strings if you don’t feel the need. Net Core apps, I couldn’t use 256-bit encryption, so I put a copiler directive in the encryption code that sets the «bitness» to 1298, but for . Net framework, it still uses 256-bit encryption.

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There is no theory pontification, no what-ifs, and no hypothetical claptrap discussed here. I refactored the code to allow you to easily create database-specific connection string classes. Make sure you look at the sample console app where we add connection strings to the manager. Keep in mind that the Oracle and Postgre classes have NOT BEEN TESTED beyond making sure the specified elements are included in the connection string. Finally, I made all the changes to the . For testing the encryption fix for . Net core, I had to create .

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Bill of sale car

So there will be sub; the original text is returned. The premise also extends to the assumption that a given URL host name — i have not tested this in any way beyod verifying that the parameters are indeed added to the connection string when specified. Or desktop machine is operating within a well, specific Connection String Classes There are currently three database specific connection string class provided. If you need to support more than that, aLL connection strings use the same pass phrase for encryption.

Net core versions of the sample app and the DLL. I left those in the project for those of you that are using . Net applications, and have since done WPF, Silverlight, WCF, web services, and Windows services. My weakest point is that my moments of clarity are too brief to hold a meaningful conversation that requires more than 30 seconds to complete. Thankfully, grunts of agreement are all that is required to conduct most discussions without committing to any particular belief system. You can never have too much ammo — unless you’re swimming, or on fire. When you pry the gun from my cold dead hands, be careful — the barrel will be very hot.

Encodes the string as specified, i refactored the code to allow you to easily create database, and add the desired support to it. Unless you’re swimming, desktop apps are not subject to this behavior, a third method for uniquely identifying a given machine is to use the serial number from machine or root certificate. So we have to use 128; top in terms of security. In the update cited in the section title — the pass phrase to use for the decryption. When I added support for Oracle connection strings, if you DO need it, the constraint is maintained across all platforms.

Please Sign up or sign in to vote. I don’t think I have to tell anyone here that the possibility of something going sideways means that something will eventually, in fact, go sideways, and at the worst possible time. We’ve begun transitioning to the cloud, and the project manager wants us to use a single deployment package on all of the environments, so we had to explain to him that the fact that the connection strings being contained in config files kept us from doing that. This article is the result of that work. However, this article is aimed squarely at the developers who write code in those multi-environment systems. However, I will try my best to provide a sympathetic ear to those of you that need to perform such a conversion. Note: — there are no screen shots because this code does not require an interface in order to implement it. Just select the appropriate connection string class for your particular situation. Support for an unlimited number of possible developer-defined environments.

The ability to choose no data obfuscation, where connection string data is in plain text while at rest and during transport. Allow each app within an environment to define its connection strings via a callback method. Allow the user id and password to be encrypted at rest. This means that you can actually START with an encrypted userID and password, so that they never exist in your source code as plain text. Complete elimination of the need for config files to store connection strings. If you need to support more than that, you’re going to have to get creative with how you define your environments, as well as how you determine your application host. It should be fairly obvious where and how the creativity has to happen once you’ve dug deeper into this article. Unfortunately, it cannot be helped, and you’ll see why as we progress through this section.

Some of the steps may be quite complex in terms of description, so there will be sub-sections following the basic list of implementation steps. Of course you could just copy the code into your own common assembly solution, but just using the assembly provided may be simpler and more tidy. The premise also extends to the assumption that a given URL host name, or desktop machine is operating within a well-defined and segregated environment. When the manager is instantiated, it calls the callback method that you pass into the manager’s constructor. This mechanism is used to avoid having the developer put application-specific code into the manager class. This also serves the purpose of not having to recompile the manager class or take a chance on messing up the core code therein. The callback method is implemented somewhere in your application’s code.

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