Sep 25, 2017 I want to generate RSA key pair in C#. I am able to get XML strings of keys, but I need base64 representations of them. Here is my code for XML RSACryptoServiceProvider rsa = new RSACryptoServiceP.
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To use RSA with Mbed TLS or any other application, you will most likely need an RSA key pair. An RSA key pair is often stored in either a PEM file or a DER file.
Building the RSA key pair generator
Mbed TLS ships with the source code for an RSA key pair generator application, called gen_key. To build the executable for the application, please check out the building Mbed TLS.
![Code Code](/uploads/1/2/5/7/125754600/883738311.png)
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After the compilation, the executable is often located in
programs/pkey/gen_key
.The gen_key application has the following arguments and options:
Generating an RSA key pair
To actually generate an RSA key pair, you have to decide which size your RSA key should be. Depending on your need for security, we advise you to use at least 2048 bits, and use 4096 bits or higher if you have very high security requirements.
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To use the RSA key pair generator to generate a 4096 bits RSA key and save that key in PEM format in private.key, use:
The larger the requested keysize, the longer it will take to generate the key itself. You also need to take into account the performance of the system.
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The key generator also outputs the key in human readable format in addition to writing the key to the requested keyfile in the requested format.
The output for a 1024-bit RSA key looks something like this: