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AR# 56729

2013.2 - What is the input format of the RSA key for 14.6 Bootgen?


I need to know the input format of the RSA key for Bootgen.

I cannot find this information in the Software Developer's Guide.


Bootgen accepts output from openssl (.pem and .pub) files.

In addition to accepting output of openssl, it will take RSA key files in the following format:

N = [Hex string, length= 512 bits] needed for private and public key
E = [Hex string] needed for private and public key
D = [Hex string] only needed for private key
P = [Hex string], length = 256 bits] - optional
Q = [Hex string , length = 256 bits] - optional

The hex is big endian.

AR# 56729
Date 05/29/2017
Status Active
Type General Article
  • Zynq-7000
  • EDK - 14.6
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