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• You must return your key fob to IT prior to the expiration date and obtain a new device. You are responsible for the safe keeping of your key fob and must return the device to IT if you leave the employ of the University or no longer require the use of such a device.
• Sep 25, 2017  The NetBackup administrator of the master server generates a reissue token for the renamed NetBackup host. Add the new host name as one of the approved host ID-to-host name mappings by using NetBackup Administration Console. See Adding host ID to host name mappings. Alternatively, you can use the nbhostmgmt -add command-line interface option.
• I could finally spot the issue after digging into the python code. The code is failing when calling 'serialization.loadsshpublickey(pubbytes, backends.defaultbackend)' in crypto.py because the python cryptography is calling an old python-cffi module.

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Note

Although .NET Core supports strong-named assemblies, and all assemblies in the .NET Core library are signed, the majority of third-party assemblies do not need strong names. For more information, see Strong Name Signing on GitHub.

There are a number of ways to sign an assembly with a strong name:

• By using the Signing tab in a project's Properties dialog box in Visual Studio. This is the easiest and most convenient way to sign an assembly with a strong name.

• By using the Assembly Linker (Al.exe) to link a .NET Framework code module (a .netmodule file) with a key file.

• By using assembly attributes to insert the strong name information into your code. You can use either the AssemblyKeyFileAttribute or the AssemblyKeyNameAttribute attribute, depending on where the key file to be used is located.

• By using compiler options.

I could finally spot the issue after digging into the python code. The code is failing when calling 'serialization.loadsshpublickey(pubbytes, backends.defaultbackend)' in crypto.py because the python cryptography is calling an old python-cffi module. Now you should make a backup of your private key. Creating GPG Keys Using the Command Line. Use the following shell command: gpg2 -full-gen-key This command generates a key pair that consists of a public and a private key. Other people use your public key to authenticate and/or decrypt your communications.

You must have a cryptographic key pair to sign an assembly with a strong name. For more information about creating a key pair, see How to: Create a public-private key pair.

Create and sign an assembly with a strong name by using Visual Studio

1. In Solution Explorer, open the shortcut menu for the project, and then choose Properties.

2. Choose the Signing tab.

3. Select the Sign the assembly box.

4. In the Choose a strong name key file box, choose Browse, and then navigate to the key file. To create a new key file, choose New and enter its name in the Create Strong Name Key dialog box.

Note

In order to delay sign an assembly, choose a public key file.

Create and sign an assembly with a strong name by using the Assembly Linker

At the Developer Command Prompt for Visual Studio, enter the following command:

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al/out:<assemblyName> <moduleName>/keyfile:<keyfileName>

Where:

• assemblyName is the name of the strongly signed assembly (a .dll or .exe file) that Assembly Linker will emit.

• moduleName is the name of a .NET Framework code module (a .netmodule file) that includes one or more types. You can create a .netmodule file by compiling your code with the /target:module switch in C# or Visual Basic.

• keyfileName is the name of the container or file that contains the key pair. Assembly Linker interprets a relative path in relation to the current directory.

The following example signs the assembly MyAssembly.dll with a strong name by using the key file sgKey.snk.

For more information about this tool, see Assembly Linker.

Sign an assembly with a strong name by using attributes

1. Add the System.Reflection.AssemblyKeyFileAttribute or AssemblyKeyNameAttribute attribute to your source code file, and specify the name of the file or container that contains the key pair to use when signing the assembly with a strong name.

2. Compile the source code file normally.

   Note

   The C# and Visual Basic compilers issue compiler warnings (CS1699 and BC41008, respectively) when they encounter the AssemblyKeyFileAttribute or AssemblyKeyNameAttribute attribute in source code. You can ignore the warnings.

The following example uses the AssemblyKeyFileAttribute attribute with a key file called keyfile.snk, which is located in the directory where the assembly is compiled.

You can also delay sign an assembly when compiling your source file. For more information, see Delay-sign an assembly.

Sign an assembly with a strong name by using the compiler

Compile your source code file or files with the /keyfile or /delaysign compiler option in C# and Visual Basic, or the /KEYFILE or /DELAYSIGN linker option in C++. After the option name, add a colon and the name of the key file. When using command-line compilers, you can copy the key file to the directory that contains your source code files.

For information on delay signing, see Delay-sign an assembly.

The following example uses the C# compiler and signs the assembly UtilityLibrary.dll with a strong name by using the key file sgKey.snk.

See also

• October 2, 2015
• Posted by: Syed Shujaat
• Category: Cisco, Networking Solutions

Use this command to generate RSA key pairs for your Cisco device (such as a router). keys are generated in pairs–one public RSA key and one private RSA key.

If your router already has RSA keys when you issue this command, you will be warned and prompted to replace the existing keys with new keys.

NOTE: Before issuing this command, ensure that your router has a hostname and IP domain name configured (with the hostname and ipdomain-name commands).

You will be unable to complete the cryptokeygeneratersacommand without a hostname and IP domain name. (This situation is not true when you generate only a named key pair.)

Here are the steps to Enable SSH and Crypto Key setup : 2 config must requried for SSH

1 Setup Local VTY line User ID and password

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router (Config) # Line VTY 0 15

router (Config-line)# login local

router (Config-line)# Exit

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!!! create local login ID/Pass

router (Config)# username [loginid] password [cisco]

router (Config)# username loginid1 password cisco1

2. router (Config)# ip domain-name example.com

router (Config)# crypto key generate rsa

how many bits in the modulus [512] :1024

router (Config)# ip ssh version2

router (Config)# CTRL Z

This command is not saved in the router configuration; however, the RSA keys generated by this command are saved in the private configuration in NVRAM (which is never displayed to the user or backed up to another device) the next time the configuration is written to NVRAM.

Modulus Length

When you generate RSA keys, you will be prompted to enter a modulus length. The longer the modulus, the stronger the security. However, a longer modules take longer to generate (see the table below for sample times) and takes longer to use.

The size of Key Modulus range from 360 to 2048. Choosing modulus greater than 512 will take longer time.

Cisco IOS software does not support a modulus greater than 4096 bits. A length of less than 512 bits is normally not recommended. In certain situations, the shorter modulus may not function properly with IKE, so we recommend using a minimum modulus of 2048 bits.

Syntax Description : Optional Strings to embed with SSH Crypto key

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