xref: /openbmc/u-boot/lib/rsa/Kconfig (revision 4bb656e9)
1config RSA
2	bool "Use RSA Library"
3	select RSA_FREESCALE_EXP if FSL_CAAM
4	select RSA_SOFTWARE_EXP if !RSA_FREESCALE_EXP
5	help
6	  RSA support. This enables the RSA algorithm used for FIT image
7	  verification in U-Boot.
8	  See doc/uImage.FIT/signature.txt for more details.
9	  The Modular Exponentiation algorithm in RSA is implemented using
10	  driver model. So CONFIG_DM needs to be enabled by default for this
11	  library to function.
12	  The signing part is build into mkimage regardless of this
13	  option. The software based modular exponentiation is built into
14	  mkimage irrespective of this option.
15
16if RSA
17config RSA_SOFTWARE_EXP
18	bool "Enable driver for RSA Modular Exponentiation in software"
19	depends on DM && RSA
20	help
21	  Enables driver for modular exponentiation in software. This is a RSA
22	  algorithm used in FIT image verification. It required RSA Key as
23	  input.
24	  See doc/uImage.FIT/signature.txt for more details.
25
26config RSA_FREESCALE_EXP
27	bool "Enable RSA Modular Exponentiation with FSL crypto accelerator"
28	depends on DM && RSA && FSL_CAAM
29	help
30	Enables driver for RSA modular exponentiation using Freescale cryptographic
31	accelerator - CAAM.
32
33endif
34