Commit bff365c0 authored by Niels Möller's avatar Niels Möller

Document salsa20r12. Also some updates to the copyright section.

parent e7773155
......@@ -182,6 +182,11 @@ Released into the public domain.
The implementation of the DES cipher is written by Dana L. How, and
released under the LGPL.
@item GOSTHASH94
The C implementation of the GOST94 message digest is written by
Aleksey Kravchenko and was ported from the rhash library by Nikos
Mavrogiannopoulos. It is released under the MIT license.
@item MD2
The implementation of MD2 is written by Andrew Kuchling, and hacked
some by Andreas Sigfridsson and @value{AUTHOR}. Python Cryptography
......@@ -196,6 +201,10 @@ The implementation of the MD5 message digest is written by Colin Plumb.
It has been hacked some more by Andrew Kuchling and @value{AUTHOR}.
Released into the public domain.
@item PBKDF2
The C implementation of PBKDF2 is based on earlier work for Shishi and
GnuTLS by Simon Josefsson. Released under the LGPL.
@item RIPEMD160
The implementation of RIPEMD160 message digest is based on the code in
libgcrypt, copyright owned by the Free Software Foundation. Ported to
......@@ -204,12 +213,8 @@ Nettle by Andres Mejia. Released under the LGPL.
@item SALSA20
The C implementation of SALSA20 is based on D. J. Bernstein's reference
implementation (in the public domain), adapted to Nettle by Simon
Josefsson, and heavily modified by Niels Möller. Assembly for x86_64 by
Niels Möller. Released under the LGPL.
@item PBKDF2
The C implementation of PBKDF2 is based on earlier work for Shishi and
GnuTLS by Simon Josefsson. Released under the LGPL.
Josefsson, and heavily modified by Niels Möller. Assembly for x86_64 and
ARM by Niels Möller. Released under the LGPL.
@item SERPENT
The implementation of the SERPENT cipher is based on the code in libgcrypt,
......@@ -220,8 +225,8 @@ x86_64 by Niels Möller. Released under the LGPL.
@item SHA1
The C implementation of the SHA1 message digest is written by Peter
Gutmann, and hacked some more by Andrew Kuchling and @value{AUTHOR}.
Released into the public domain. Assembler for x86 by @value{AUTHOR},
released under the LGPL.
Released into the public domain. Assembler for x86, x86_64 and ARM by
@value{AUTHOR}, released under the LGPL.
@item SHA2
Written by @value{AUTHOR}, using Peter Gutmann's SHA1 code as a model.
......@@ -230,15 +235,13 @@ Released under the LGPL.
@item SHA3
Written by @value{AUTHOR}. Released under the LGPL.
@item GOSTHASH94
The C implementation of the GOST94 message digest is written by
Aleksey Kravchenko and was ported from the rhash library by Nikos
Mavrogiannopoulos. It is released under the MIT license.
@item TWOFISH
The implementation of the TWOFISH cipher is written by Ruud de Rooij.
Released under the LGPL.
@item UMAC
Written by @value{AUTHOR}. Released under the LGPL.
@item RSA
Written by @value{AUTHOR}, released under the LGPL. Uses the GMP library
for bignum operations.
......@@ -1564,7 +1567,18 @@ Encrypts or decrypts the data of a message, using salsa20. When a
message is encrypted using a sequence of calls to @code{salsa20_crypt},
all but the last call @emph{must} use a length that is a multiple of
@code{SALSA20_BLOCK_SIZE}.
@end deftypefun
The full salsa20 cipher uses 20 rounds of mixing. Variants of Salsa20
with fewer rounds are possible, and the 12-round variant is specified by
eSTREAM, see @url{http://www.ecrypt.eu.org/stream/finallist.html}.
Nettle calls this variant @code{salsa20r12}. It uses the same context
struct and key setup as the full salsa20 cipher, but a separate function
for encryption and decryption.
@deftypefun void salsa20r12_crypt (struct salsa20_ctx *@var{ctx}, unsigned @var{length}, uint8_t *@var{dst}, const uint8_t *@var{src})
Encrypts or decrypts the data of a message, using salsa20 reduced to 12
rounds.
@end deftypefun
@subsection SERPENT
......
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