Update documentation.

2 files changed, 10 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index ec5cdb1..c1b9bf5 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,12 @@
 -*- mode: outline -*-
 
+* Changes since version 0.50
+
+** new features
+
+The prime factors (p and q) of the modulus of a RSA private key can be
+retreived using the rsa-key-prime-p and rsa-key-prime-q functions.
+
 * Version 0.50, released 2020-07-01
 
 ** bug fixes
diff --git a/README.org b/README.org
index 0073121..8157c1d 100644
--- a/README.org
+++ b/README.org
@@ -1089,7 +1089,7 @@ specialize on /kind/, below.
 (make-private-key :ed25519 &key x y) => private-key
 (make-private-key :ed448 &key x y) => private-key
 (make-private-key :elgamal &key p g y x) => private-key
-(make-private-key :rsa &key d n) => private-key
+(make-private-key :rsa &key d n p q) => private-key
 #+END_EXAMPLE
 
 
@@ -1109,6 +1109,8 @@ For RSA keys, the type of the parameters is ~integer~:
  - /n/, the modulus
  - /e/, the public key
  - /d/, the private key
+ - /p/, the first prime factor of /n/
+ - /q/, the second prime factor of /n/
 
 *** Key destructuring