progs/cc-kem.c: Add `naclbox' crypto transform.

[catacomb] / progs / catcrypt.1

diff --git a/progs/catcrypt.1 b/progs/catcrypt.1
index af5e6b3ac7fe8df0b0b6f0a532b68ab3f8ab3db8..a3ebff8ab63e36a302a6108321c356c2587fb606 100644 (file)
--- a/progs/catcrypt.1
+++ b/progs/catcrypt.1
@@ -226,6 +226,28 @@ and
 .B mac
 attributes.
 This is the default transform.
+.TP
+.B naclbox
+Use Salsa20 or ChaCha and Poly1305 to secure the bulk data.
+This is nearly the same as the NaCl
+.B crypto_secretbox
+construction,
+except that
+.B catcrypt
+uses Salsa20 or ChaCha rather than XSalsa20,
+because it doesn't need the latter's extended nonce.
+The
+.B cipher
+attribute may be set to one of
+.BR salsa20 ,
+.BR salsa20/12 ,
+.BR salsa20/8 ,
+.BR chacha20 ,
+.BR chacha12 ,
+or
+.BR chacha8 ;
+the default is
+.BR salsa20 .
 .PP
 As well as the KEM itself, a number of supporting algorithms are used.
 These are taken from appropriately named attributes on the key or,