diff --git a/exam/ex.tex b/exam/ex.tex
index 586c0e3..f2a0a24 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -202,7 +202,16 @@
     \item LEDAcrypt is a post-quantum asymmetric suite of cryptosystems. It
       contains a public-key encryption scheme and a key-encapsulation mechanism
       (KEM). The underlying hard problem (arbitrary linear binary code decoding)
-      is currently believed to be secure against quantum adversaries. 
+      is currently believed to be secure against quantum adversaries. The
+      public-key encryption scheme is based on McEliece and the KEM is based on
+      the Niederreiter cryptosystem. It uses quasi-cyclic low-density
+      parity-check (QC-LDPC) codes, which allows the primitive to use a compact
+      construction (QC) with good error correction performance (LDPC). The
+      result is a more efficient cryptosystem than the classic McEliece scheme
+      while supposedly maintaining the well-known security level of said scheme.
+      Unfortunately, LEDAcrypt has not survived the second round of the
+      post-quantum cryptography standardization organized by NIST because the
+      scheme has seen a major, practical break.
 
     \item The authors introduce a post-quantum public-key cryptosystem based on
       linear codes.