xref: /openbmc/u-boot/lib/rsa/Kconfig (revision a5c289b9)
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
16config SPL_RSA
17	bool "Use RSA Library within SPL"
18	depends on RSA
19
20if RSA
21config RSA_SOFTWARE_EXP
22	bool "Enable driver for RSA Modular Exponentiation in software"
23	depends on DM && RSA
24	help
25	  Enables driver for modular exponentiation in software. This is a RSA
26	  algorithm used in FIT image verification. It required RSA Key as
27	  input.
28	  See doc/uImage.FIT/signature.txt for more details.
29
30config RSA_FREESCALE_EXP
31	bool "Enable RSA Modular Exponentiation with FSL crypto accelerator"
32	depends on DM && RSA && FSL_CAAM
33	help
34	Enables driver for RSA modular exponentiation using Freescale cryptographic
35	accelerator - CAAM.
36
37endif
38