X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/d56fd9d102115283485493dbe56b0d320ac99097..6a024d24d97cb5d42c0091571735475b849f59f4:/progs/catcrypt.1

diff --git a/progs/catcrypt.1 b/progs/catcrypt.1
index e6e1534b..6c554408 100644
--- a/progs/catcrypt.1
+++ b/progs/catcrypt.1
@@ -216,6 +216,18 @@ command
 (see
 .BR key (1))
 to generate the key.
+.TP
+.B x448
+This is Hamburg's Curve25519, a strong Diffie-Hellman using a specific
+elliptic curve.
+Use the
+.B x448
+algorithm of the
+.B key add
+command
+(see
+.BR key (1))
+to generate the key.
 .PP
 The bulk crypto transform is chosen based on the
 .B bulk
@@ -433,6 +445,24 @@ 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
@@ -472,6 +502,14 @@ and
 .BR eckcdsa ,
 the default hash function is
 .BR has160 .
+For
+.BR ed25519 ,
+the default hash function is
+.BR sha512 .
+For
+.BR ed448 ,
+the default hash function is
+.BR shake256 .
 .PP
 Run
 .B catcrypt show hash