tighten wording

1 files changed, 8 insertions, 7 deletions

diff --git a/sq-guide.md b/sq-guide.md
index 343f688..e716c78 100644
--- a/sq-guide.md
+++ b/sq-guide.md
@@ -408,13 +408,14 @@ cryptographic defences, different types of keys and algorithms have
 been developed and enhanced. While a through discussion of these is
 beyond the scope of this guide, the list below gives a summary.
 
-* Encryption algorithm **RSA**: this is about the oldest public key
-  algorithm. It's stood strong, except as attacker are gaining faster
-  computers and better attack software, the keys used for RSA have
-  needed to become much longer. Where a 384 bit key was OK in the
-  early 1990s, a 2048 bit or even a 4096 bit key is preferred thirty
-  years later. The longer an RSA key is, the more computing power it
-  takes to use it, and this makes strong cryptography with RSA slower.
+* Encryption algorithm **RSA**: this is the oldest known public key
+  encryption algorithm. It has stayed strong, except as attackers are
+  gaining faster computers and better attack software, the keys used
+  for RSA have needed to become much longer. Where a 384 bit key was
+  OK in the early 1990s, a 2048 bit or even a 4096 bit key is
+  preferred thirty years later. The longer an RSA key is, the more
+  computing power it takes to use it, and this makes strong
+  cryptography with RSA slower.
 
 * **Elliptic curve cryptography**: where RSA relies on the
   computational difficulty of factoring large numbers, elliptic curve