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To sign an assembly with a strong name, you must have a public/private key pair. This public and private cryptographic key pair is used during compilation to create a strong-named assembly. You can create a key pair using the Strong Name tool (Sn.exe). Key pair files usually have an .snk extension.
Note
In Visual Studio, the C# and Visual Basic project property pages include a Signing tab that enables you to select existing key files or to generate new key files without using Sn.exe. In Visual C++, you can specify the location of an existing key file in the Advanced property page in the Linker section of the Configuration Properties section of the Property Pages window. The use of the AssemblyKeyFileAttribute attribute to identify key file pairs was made obsolete beginning with Visual Studio 2005.
Create a key pair
To create a key pair, at a command prompt, type the following command:
sn –k <file name>
In this command, file name is the name of the output file containing the key pair.
How to: Create a public-private key pair.; 2 minutes to read; In this article. To sign an assembly with a strong name, you must have a public/private key pair. This public and private cryptographic key pair is used during compilation to create a strong-named assembly. You can create a key pair using the Strong Name tool (Sn.exe). Apr 08, 2005 GNU gpg is encryption and signing tool. Adblock detected 😱 My website is made possible by displaying online advertisements to my visitors. Ads are annoying but they help keep this website running. It is hard to keep the site running and producing new content when so many people block ads. Please consider Continue reading 'Linux create your own GnuPG private and public key'. This will generate a public-private key pair in the GPG keyring and prompt for the size of the encryption key: ELG-E keys may be between 1024 and 4096 bits long. What keysize do you want? (2048) Select the default value of 2048. Enter greater or fewer bits depending on how secure the encryption must be.
The following example creates a key pair called sgKey.snk.
If you intend to delay sign an assembly and you control the whole key pair (which is unlikely outside test scenarios), you can use the following commands to generate a key pair and then extract the public key from it into a separate file. First, create the key pair:
Next, extract the public key from the key pair and copy it to a separate file:
Once you create the key pair, you must put the file where the strong name signing tools can find it.
When signing an assembly with a strong name, the Assembly Linker (Al.exe) looks for the key file relative to the current directory and to the output directory. When using command-line compilers, you can simply copy the key to the current directory containing your code modules.
If you are using an earlier version of Visual Studio that does not have a Signing tab in the project properties, the recommended key file location is the project directory with the file attribute specified as follows: Allway sync pro activation key generator.
See also
- Table of Contents
- Generating a new keypair
- Exchanging keys
- Encrypting and decrypting documents
- Making and verifying signatures
Java Generate Rsa Key Pair
GnuPG is a tool for secure communication.This chapter is a quick-start guide that covers the core functionalityof GnuPG.This includes keypair creation, exchanging and verifying keys, encryptingand decrypting documents, and authenticating documents with digitalsignatures.It does not explain in detail the concepts behind public-key cryptography,encryption, and digital signatures.This is covered in Chapter 2.It also does not explain how to use GnuPG wisely.This is covered in Chapters 3 and 4.
GnuPG uses public-key cryptography so that users may communicate securely.In a public-key system, each user has a pair of keys consisting ofa <iclass='firstterm'>private key and a <iclass='firstterm'>public key.A user's private key is kept secret; it need never be revealed.The public key may be given to anyone with whom the user wants tocommunicate.GnuPG uses a somewhat more sophisticated scheme in which a user hasa primary keypair and then zero or more additional subordinate keypairs.The primary and subordinate keypairs are bundled to facilitate keymanagement and the bundle can often be considered simply as one keypair.</iclass='firstterm'></iclass='firstterm'>
The command-line option <spanclass='option'>--gen-keyis used to create a new primary keypair.<tableborder='0'bgcolor='#e0e0e0'width='100%'>GnuPG is able to create several different types of keypairs, but a primarykey must be capable of making signatures.There are therefore only three options.Option 1 actually creates two keypairs.A DSA keypair is the primary keypair usable only for making signatures.An ElGamal subordinate keypair is also created for encryption. Option 2 is similar but creates only a DSA keypair.Option 4[1] creates a single ElGamal keypair usable for both making signatures and performing encryption.In all cases it is possible to later add additional subkeys for encryptionand signing.For most users the default option is fine.</tableborder='0'bgcolor='#e0e0e0'width='100%'></spanclass='option'>
You must also choose a key size.The size of a DSA key must be between 512 and 1024 bits, and an ElGamalkey may be of any size.GnuPG, however, requires that keys be no smaller than 768 bits.Therefore, if Option 1 was chosen and you choose a keysize larger than1024 bits, the ElGamal key will have the requested size, but the DSAkey will be 1024 bits.<tableborder='0'bgcolor='#e0e0e0'width='100%'>The longer the key the more secure it is against brute-force attacks,but for almost all purposes the default keysize is adequate sinceit would be cheaper to circumvent the encryption than try to break it.Also, encryption and decryption will be slower as thekey size is increased, and a larger keysize may affect signature length.Once selected, the keysize can never be changed.</tableborder='0'bgcolor='#e0e0e0'width='100%'>
Finally, you must choose an expiration date.If Option 1 was chosen, the expiration date will be used for both theElGamal and DSA keypairs.<tableborder='0'bgcolor='#e0e0e0'width='100%'>For most users a key that does not expire is adequate.The expiration time should be chosen with care, however,since although it is possible to change the expiration date after the keyis created, it may be difficult to communicate a changeto users who have your public key.</tableborder='0'bgcolor='#e0e0e0'width='100%'>
You must provide a user ID in addition to the key parameters.The user ID is used to associate the key being created with a realperson.<tableborder='0'bgcolor='#e0e0e0'width='100%'>Only one user ID is created when a key is created, but it is possibleto create additional user IDs if you want to use the key in two ormore contexts, e.g., as an employee at work and a political activiston the side.A user ID should be created carefully since it cannot be edited afterit is created.</tableborder='0'bgcolor='#e0e0e0'width='100%'>
How To Generate Rsa Key
GnuPG needs a passphrase to protect the primary and subordinate private keys that you keep in your possession.<tableborder='0'bgcolor='#e0e0e0'width='100%'>There is no limit on the length of a passphrase, and it should becarefully chosen.From the perspective of security, the passphrase to unlock the privatekey is one of the weakest points in GnuPG (and other public-key encryption systems as well) since it is the only protection you have if another individual gets your private key.Ideally, the passphrase should not use words from a dictionary andshould mix the case of alphabetic characters as well as use non-alphabetic characters.A good passphrase is crucial to the secure use of GnuPG.</tableborder='0'bgcolor='#e0e0e0'width='100%'>
Generating a revocation certificate
After your keypair is created you should immediately generate a revocationcertificate for the primary public key using the option<spanclass='option'>--gen-revoke.If you forget your passphrase or if your private key is compromised or lost, this revocation certificate may be published to notify othersthat the public key should no longer be used.A revoked public key can still be used to verify signatures madeby you in the past, but it cannot be used to encrypt future messagesto you.It also does not affect your ability to decrypt messages sent toyou in the past if you still do have access to the private key.<tableborder='0'bgcolor='#e0e0e0'width='100%'>The argument <ttclass='userinput'>mykey must be a <iclass='emphasis'>keyspecifier,either the key ID of your primary keypair or any part of a user IDthat identifies your keypair.The generated certificate will be left in the file<ttclass='parameter'>revoke.asc.If the <spanclass='option'>--output option is omitted, the result will be placed on standard output.Since the certificate is short, you may wish to print a hardcopy ofthe certificate to store somewhere safe such as your safe deposit box.The certificate should not be stored where others can access it sinceanybody can publish the revocation certificate and render thecorresponding public key useless.</spanclass='option'></ttclass='parameter'></iclass='emphasis'></ttclass='userinput'></tableborder='0'bgcolor='#e0e0e0'width='100%'></spanclass='option'>
Notes
Gpg Generate Public Private Key Pair
Generate Rsa Public Key
[1]
Option 3 is to generate an ElGamal keypair that isnot usable for making signatures.
Windows Generate Rsa Key Pair