X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=doc%2FuImage.FIT%2Fsignature.txt;fp=doc%2FuImage.FIT%2Fsignature.txt;h=b2f89fcc65d0fd2a14693b26ce7f93ce0fe3412d;hb=e0f2f15534146729fdf2ce58b740121fd67eea1c;hp=a6ab543de43c18e6c11c2f3b9a4c893014848636;hpb=53022c3113a6670d21f55262f511ae6a07bb3dc4;p=karo-tx-uboot.git

diff --git a/doc/uImage.FIT/signature.txt b/doc/uImage.FIT/signature.txt
index a6ab543de4..b2f89fcc65 100644
--- a/doc/uImage.FIT/signature.txt
+++ b/doc/uImage.FIT/signature.txt
@@ -66,7 +66,8 @@ Creating an RSA key and certificate
 -----------------------------------
 To create a new public key, size 2048 bits:
 
-$ openssl genrsa -F4 -out keys/dev.key 2048
+$ openssl genpkey -algorithm RSA -out keys/dev.key \
+    -pkeyopt rsa_keygen_bits:2048 -pkeyopt rsa_keygen_pubexp:65537
 
 To create a certificate for this:
 
@@ -159,6 +160,7 @@ For RSA the following are mandatory:
 
 - rsa,num-bits: Number of key bits (e.g. 2048)
 - rsa,modulus: Modulus (N) as a big-endian multi-word integer
+- rsa,exponent: Public exponent (E) as a 64 bit unsigned integer
 - rsa,r-squared: (2^num-bits)^2 as a big-endian multi-word integer
 - rsa,n0-inverse: -1 / modulus[0] mod 2^32