X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/df8800f155a588c698c1261069868876f0b2d1e6..bd6d65e32b835551677456bf286d09ced6859882:/progs/catsign.1

diff --git a/progs/catsign.1 b/progs/catsign.1
index 3aed8ed5..937e05f8 100644
--- a/progs/catsign.1
+++ b/progs/catsign.1
@@ -262,6 +262,24 @@ command
 .BR key (1))
 to generate the key.
 .TP
+.B ed448
+This is Bernstein, Duif, Lange, Schwabe, and Yang's EdDSA algorithm,
+using Hamburg's Ed448-Goldilocks elliptic curve,
+as specified in RFC8032.
+More specifically, this is HashEd448
+using the selected
+.B hash
+algorithm \(en by default
+.BR sha3-512 .
+Use the
+.B ed448
+algorithm of the
+.B key add
+command
+(see
+.BR key (1))
+to generate the key.
+.TP
 .B mac
 This uses a symmetric message-authentication algorithm rather than a
 digital signature.  The precise message-authentication scheme used is
@@ -305,6 +323,10 @@ For
 .BR ed25519 ,
 the default hash function is
 .BR sha512 .
+For
+.BR ed448 ,
+the default hash function is
+.BR shake256 .
 .PP
 Run
 .B catsign show hash