Mercurial > dropbear
annotate libtomcrypt/src/mac/poly1305/poly1305_memory.c @ 1648:48c6e54f7281
Added signature for changeset 07b0d56d186d
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Sat, 23 Mar 2019 21:54:23 +0800 |
parents | 6dba84798cd5 |
children |
rev | line source |
---|---|
1471
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
2 * |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
3 * LibTomCrypt is a library that provides various cryptographic |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
4 * algorithms in a highly modular and flexible manner. |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
5 * |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
6 * The library is free for all purposes without any express |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
7 * guarantee it works. |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
8 */ |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
9 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
10 /* The implementation is based on: |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
11 * Public Domain poly1305 from Andrew Moon |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
12 * https://github.com/floodyberry/poly1305-donna |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
13 */ |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
14 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
15 #include "tomcrypt.h" |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
16 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
17 #ifdef LTC_POLY1305 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
18 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
19 /** |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
20 POLY1305 a block of memory to produce the authentication tag |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
21 @param key The secret key |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
22 @param keylen The length of the secret key (octets) |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
23 @param in The data to POLY1305 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
24 @param inlen The length of the data to POLY1305 (octets) |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
25 @param mac [out] Destination of the authentication tag |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
26 @param maclen [in/out] Max size and resulting size of authentication tag |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
27 @return CRYPT_OK if successful |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
28 */ |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
29 int poly1305_memory(const unsigned char *key, unsigned long keylen, const unsigned char *in, unsigned long inlen, unsigned char *mac, unsigned long *maclen) |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
30 { |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
31 poly1305_state st; |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
32 int err; |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
33 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
34 LTC_ARGCHK(key != NULL); |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
35 LTC_ARGCHK(in != NULL); |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
36 LTC_ARGCHK(mac != NULL); |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
37 LTC_ARGCHK(maclen != NULL); |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
38 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
39 if ((err = poly1305_init(&st, key, keylen)) != CRYPT_OK) { goto LBL_ERR; } |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
40 if ((err = poly1305_process(&st, in, inlen)) != CRYPT_OK) { goto LBL_ERR; } |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
41 err = poly1305_done(&st, mac, maclen); |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
42 LBL_ERR: |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
43 #ifdef LTC_CLEAN_STACK |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
44 zeromem(&st, sizeof(poly1305_state)); |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
45 #endif |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
46 return err; |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
47 } |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
48 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
49 #endif |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
50 |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
51 /* ref: $Format:%D$ */ |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
52 /* git commit: $Format:%H$ */ |
6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
53 /* commit time: $Format:%ai$ */ |