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added libtomcrypt-1.04

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Tom St Denis 2005-06-14 22:16:11 +00:00 committed by Steffen Jaeckel
parent 3964a6523a
commit 9da48eb84b
12 changed files with 54 additions and 135 deletions
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2
Doxyfile
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@ -23,7 +23,7 @@ PROJECT_NAME = LibTomCrypt
# This could be handy for archiving the generated documentation or
# if some version control system is used.
PROJECT_NUMBER = 1.03
PROJECT_NUMBER = 1.04
# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
# base path where the generated documentation will be put.

5
TODO
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@ -1,9 +1,10 @@
Things ideal for 1.04
Things ideal for 1.05
- ASN.1 SET and UTCtime
- ASN.1 SET and UTCtime and CHOICE (hint for choice do it as a sep list and just use error codes to know when you got a hit)
- Start working towards making the bignum code plugable
- Add OID for ciphers and PRNGs to their descriptors
- Document the ASN.1 a bit more verbosely ;-)
- Some ASN.1 demo programs [for now read the source code!]
- export ECC functions globally
- Look into other ECC point muls and consider a "precomp" interface

12
changes
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@ -1,3 +1,11 @@
June 15th, 2005
v1.04
-- Fixed off by one [bit] error in dsa_make_key() it was too high by one bit [not a security problem just inconsistent]
-- ECC-224 curve was wrong [it was an ok curve just not NIST, so no security flaw just interoperability].
-- Removed point compression since it slows down ECC ops to save a measly couple bytes.
This makes the ecc export format incompatible with 1.03 [it shouldn't change in the future]
-- Removed ECC-160 from timing and added the other curves
June 9th, 2005
v1.03
-- Users may want to note that on a P4/GCC3.4 platform "-fno-regmove" greatly accelerates the ciphers/hashes.
@ -1300,6 +1308,6 @@ v0.02 -- Changed RC5 to only allow 12 to 24 rounds
v0.01 -- We will call this the first version.
/* $Source: /cvs/libtom/libtomcrypt/changes,v $ */
/* $Revision: 1.92 $ */
/* $Date: 2005/06/09 01:06:59 $ */
/* $Revision: 1.97 $ */
/* $Date: 2005/06/14 23:09:41 $ */

17
crypt.tex
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@ -47,7 +47,7 @@
\def\gap{\vspace{0.5ex}}
\makeindex
\begin{document}
\title{LibTomCrypt \\ Version 1.03}
\title{LibTomCrypt \\ Version 1.04}
\author{Tom St Denis \\
\\
tomstdenis@gmail.com \\
@ -3022,26 +3022,25 @@ than ideally simple manner. In the case of LibTomCrypt it is meant \textbf{sole
\begin{small}
\begin{verbatim}
ECCPublicKey ::= SEQUENCE {
flags BIT STRING(2), -- public/private flag (always zero),
-- compressed point
flags BIT STRING(1), -- public/private flag (always zero),
keySize INTEGER, -- Curve size (in bits) divided by eight
-- and rounded down, e.g. 521 => 65
pubkey.x INTEGER, -- The X co-ordinate of the public key point
pubkey.y INTEGER, -- The Y co-ordinate of the public key point
}
ECCPrivateKey ::= SEQUENCE {
flags BIT STRING(2), -- public/private flag (always one),
-- compressed point
flags BIT STRING(1), -- public/private flag (always one),
keySize INTEGER, -- Curve size (in bits) divided by eight
-- and rounded down, e.g. 521 => 65
pubkey.x INTEGER, -- The X co-ordinate of the public key point
pubkey.y INTEGER, -- The Y co-ordinate of the public key point
secret.k INTEGER, -- The secret key scalar
}
\end{verbatim}
\end{small}
The first flags bit denotes whether the key is public (zero) or private (one). The compressed point bit is equal to zero if $(x^3 - 3x + b)^{(p+1)/4} \mbox{ mod }p$ is
congruent to the keys $y$ co-ordinate. The bit is one if the $y$ co-ordinate is the negative of the computed square root.
The first flags bit denotes whether the key is public (zero) or private (one).
\section{Core Functions}
@ -4492,5 +4491,5 @@ but should at least maintain the same level of state entropy.
\end{document}
% $Source: /cvs/libtom/libtomcrypt/crypt.tex,v $
% $Revision: 1.32 $
% $Date: 2005/06/09 00:36:17 $
% $Revision: 1.33 $
% $Date: 2005/06/14 22:53:24 $

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doc/crypt.pdf
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6
makefile
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@ -4,7 +4,7 @@
# Modified by Clay Culver
# The version
VERSION=1.03
VERSION=1.04
# Compiler and Linker Names
#CC=gcc
@ -321,5 +321,5 @@ zipup: no_oops docs
# $Source: /cvs/libtom/libtomcrypt/makefile,v $
# $Revision: 1.67 $
# $Date: 2005/06/09 00:39:26 $
# $Revision: 1.68 $
# $Date: 2005/06/14 22:53:24 $

6
makefile.shared
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@ -6,7 +6,7 @@
# Tom St Denis
# The version
VERSION=0:103
VERSION=0:104
# Compiler and Linker Names
CC=libtool --mode=compile gcc
@ -222,5 +222,5 @@ timing: library $(LIBTEST) $(TIMINGS)
gcc -o $(TIMING) $(TIMINGS) -ltomcrypt_prof -ltomcrypt $(MPISHARED)
# $Source: /cvs/libtom/libtomcrypt/makefile.shared,v $
# $Revision: 1.16 $
# $Date: 2005/06/08 23:37:40 $
# $Revision: 1.17 $
# $Date: 2005/06/14 22:53:25 $

4
src/headers/tomcrypt.h
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@ -16,8 +16,8 @@ extern "C" {
#endif
/* version */
#define CRYPT 0x0103
#define SCRYPT "1.03"
#define CRYPT 0x0104
#define SCRYPT "1.04"
/* max size of either a cipher/hash block or symmetric key [largest of the two] */
#define MAXBLOCKSIZE 128

6
src/pk/dsa/dsa_make_key.c
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@ -70,12 +70,12 @@ int dsa_make_key(prng_state *prng, int wprng, int group_size, int modulus_size,
}
/* force magnitude */
buf[0] = 1;
buf[0] |= 0xC0;
/* force even */
buf[modulus_size - group_size] &= ~1;
buf[modulus_size - group_size - 1] &= ~1;
if ((err = mp_read_unsigned_bin(&tmp2, buf, modulus_size - group_size+1)) != MP_OKAY) { goto error; }
if ((err = mp_read_unsigned_bin(&tmp2, buf, modulus_size - group_size)) != MP_OKAY) { goto error; }
if ((err = mp_mul(&key->q, &tmp2, &key->p)) != MP_OKAY) { goto error; }
if ((err = mp_add_d(&key->p, 1, &key->p)) != MP_OKAY) { goto error; }

125
src/pk/ecc/ecc.c
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@ -60,19 +60,20 @@ static const struct {
"ECC-224",
/* prime */
"400000000000000000000000000000000000BV",
"3/////////////////////0000000000000001",
/* B */
"21HkWGL2CxJIp",
"2q1Gg530Ipg/L1CbPGHB2trx/OkYSBEKCZLV+q",
/* order */
"4000000000000000000Kxnixk9t8MLzMiV264/",
"3//////////////////nQYuBZmFXFTAKLSN2ez",
/* Gx */
"jpqOf1BHus6Yd/pyhyVpP",
"2t3WozQxI/Vp8JaBbA0y7JLi8H8ZGoWDOHN1qX",
/* Gy */
"3FCtyo2yHA5SFjkCGbYxbOvNeChwS+j6wSIwck",
"2zDsE8jVSZ+qmYt+RDGtMWMWT7P4JLWPc507uq",
},
#endif
#ifdef ECC256
@ -819,89 +820,6 @@ void ecc_free(ecc_key *key)
mp_clear_multi(&key->pubkey.x, &key->pubkey.y, &key->pubkey.z, &key->k, NULL);
}
static int compress_y_point(ecc_point *pt, int idx, int *result)
{
mp_int tmp, tmp2, p;
int err;
LTC_ARGCHK(pt != NULL);
LTC_ARGCHK(result != NULL);
if ((err = mp_init_multi(&tmp, &tmp2, &p, NULL)) != MP_OKAY) {
return mpi_to_ltc_error(err);
}
/* get x^3 - 3x + b */
if ((err = mp_read_radix(&p, (char *)sets[idx].B, 64)) != MP_OKAY) { goto error; } /* p = B */
if ((err = mp_expt_d(&pt->x, 3, &tmp)) != MP_OKAY) { goto error; } /* tmp = pX^3 */
if ((err = mp_mul_d(&pt->x, 3, &tmp2)) != MP_OKAY) { goto error; } /* tmp2 = 3*pX^3 */
if ((err = mp_sub(&tmp, &tmp2, &tmp)) != MP_OKAY) { goto error; } /* tmp = tmp - tmp2 */
if ((err = mp_add(&tmp, &p, &tmp)) != MP_OKAY) { goto error; } /* tmp = tmp + p */
if ((err = mp_read_radix(&p, (char *)sets[idx].prime, 64)) != MP_OKAY) { goto error; } /* p = prime */
if ((err = mp_mod(&tmp, &p, &tmp)) != MP_OKAY) { goto error; } /* tmp = tmp mod p */
/* now find square root */
if ((err = mp_add_d(&p, 1, &tmp2)) != MP_OKAY) { goto error; } /* tmp2 = p + 1 */
if ((err = mp_div_2d(&tmp2, 2, &tmp2, NULL)) != MP_OKAY) { goto error; } /* tmp2 = (p+1)/4 */
if ((err = mp_exptmod(&tmp, &tmp2, &p, &tmp)) != MP_OKAY) { goto error; } /* tmp = (x^3 - 3x + b)^((p+1)/4) mod p */
/* if tmp equals the y point give a 0, otherwise 1 */
if (mp_cmp(&tmp, &pt->y) == 0) {
*result = 0;
} else {
*result = 1;
}
err = CRYPT_OK;
goto done;
error:
err = mpi_to_ltc_error(err);
done:
mp_clear_multi(&p, &tmp, &tmp2, NULL);
return err;
}
static int expand_y_point(ecc_point *pt, int idx, int result)
{
mp_int tmp, tmp2, p;
int err;
LTC_ARGCHK(pt != NULL);
if ((err = mp_init_multi(&tmp, &tmp2, &p, NULL)) != MP_OKAY) {
return CRYPT_MEM;
}
/* get x^3 - 3x + b */
if ((err = mp_read_radix(&p, (char *)sets[idx].B, 64)) != MP_OKAY) { goto error; } /* p = B */
if ((err = mp_expt_d(&pt->x, 3, &tmp)) != MP_OKAY) { goto error; } /* tmp = pX^3 */
if ((err = mp_mul_d(&pt->x, 3, &tmp2)) != MP_OKAY) { goto error; } /* tmp2 = 3*pX^3 */
if ((err = mp_sub(&tmp, &tmp2, &tmp)) != MP_OKAY) { goto error; } /* tmp = tmp - tmp2 */
if ((err = mp_add(&tmp, &p, &tmp)) != MP_OKAY) { goto error; } /* tmp = tmp + p */
if ((err = mp_read_radix(&p, (char *)sets[idx].prime, 64)) != MP_OKAY) { goto error; } /* p = prime */
if ((err = mp_mod(&tmp, &p, &tmp)) != MP_OKAY) { goto error; } /* tmp = tmp mod p */
/* now find square root */
if ((err = mp_add_d(&p, 1, &tmp2)) != MP_OKAY) { goto error; } /* tmp2 = p + 1 */
if ((err = mp_div_2d(&tmp2, 2, &tmp2, NULL)) != MP_OKAY) { goto error; } /* tmp2 = (p+1)/4 */
if ((err = mp_exptmod(&tmp, &tmp2, &p, &tmp)) != MP_OKAY) { goto error; } /* tmp = (x^3 - 3x + b)^((p+1)/4) mod p */
/* if result==0, then y==tmp, otherwise y==p-tmp */
if (result == 0) {
if ((err = mp_copy(&tmp, &pt->y) != MP_OKAY)) { goto error; }
} else {
if ((err = mp_sub(&p, &tmp, &pt->y) != MP_OKAY)) { goto error; }
}
err = CRYPT_OK;
goto done;
error:
err = mpi_to_ltc_error(err);
done:
mp_clear_multi(&p, &tmp, &tmp2, NULL);
return err;
}
/**
Export an ECC key as a binary packet
@param out [out] Destination for the key
@ -912,8 +830,8 @@ done:
*/
int ecc_export(unsigned char *out, unsigned long *outlen, int type, ecc_key *key)
{
int cp, err;
unsigned char flags[2];
int err;
unsigned char flags[1];
unsigned long key_size;
LTC_ARGCHK(out != NULL);
@ -929,29 +847,25 @@ int ecc_export(unsigned char *out, unsigned long *outlen, int type, ecc_key *key
return CRYPT_INVALID_ARG;
}
/* compress the y part */
if ((err = compress_y_point(&key->pubkey, key->idx, &cp)) != CRYPT_OK) {
return err;
}
flags[1] = cp;
/* we store the NIST byte size */
key_size = sets[key->idx].size;
if (type == PK_PRIVATE) {
flags[0] = 1;
err = der_encode_sequence_multi(out, outlen,
LTC_ASN1_BIT_STRING, 2UL, flags,
LTC_ASN1_BIT_STRING, 1UL, flags,
LTC_ASN1_SHORT_INTEGER, 1UL, &key_size,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.x,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.y,
LTC_ASN1_INTEGER, 1UL, &key->k,
LTC_ASN1_EOL, 0UL, NULL);
} else {
flags[0] = 0;
err = der_encode_sequence_multi(out, outlen,
LTC_ASN1_BIT_STRING, 2UL, flags,
LTC_ASN1_BIT_STRING, 1UL, flags,
LTC_ASN1_SHORT_INTEGER, 1UL, &key_size,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.x,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.y,
LTC_ASN1_EOL, 0UL, NULL);
}
@ -968,7 +882,7 @@ int ecc_export(unsigned char *out, unsigned long *outlen, int type, ecc_key *key
int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key)
{
unsigned long key_size;
unsigned char flags[2];
unsigned char flags[1];
int err;
LTC_ARGCHK(in != NULL);
@ -981,7 +895,7 @@ int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key)
/* find out what type of key it is */
if ((err = der_decode_sequence_multi(in, inlen,
LTC_ASN1_BIT_STRING, 2UL, &flags,
LTC_ASN1_BIT_STRING, 1UL, &flags,
LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
goto error;
}
@ -991,9 +905,10 @@ int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key)
/* private key */
key->type = PK_PRIVATE;
if ((err = der_decode_sequence_multi(in, inlen,
LTC_ASN1_BIT_STRING, 2UL, flags,
LTC_ASN1_BIT_STRING, 1UL, flags,
LTC_ASN1_SHORT_INTEGER, 1UL, &key_size,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.x,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.y,
LTC_ASN1_INTEGER, 1UL, &key->k,
LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
goto error;
@ -1003,9 +918,10 @@ int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key)
/* private key */
key->type = PK_PUBLIC;
if ((err = der_decode_sequence_multi(in, inlen,
LTC_ASN1_BIT_STRING, 2UL, flags,
LTC_ASN1_BIT_STRING, 1UL, flags,
LTC_ASN1_SHORT_INTEGER, 1UL, &key_size,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.x,
LTC_ASN1_INTEGER, 1UL, &key->pubkey.y,
LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
goto error;
}
@ -1018,11 +934,6 @@ int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key)
goto error;
}
/* compute y */
if ((err = expand_y_point(&key->pubkey, key->idx, flags[1])) != CRYPT_OK) {
goto error;
}
/* set z */
mp_set(&key->pubkey.z, 1);

2
testprof/ecc_test.c
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@ -67,7 +67,7 @@ int ecc_tests (void)
return 1;
}
if (memcmp (buf[0], buf[2], x)) {
fprintf(stderr, "Failed. Content didn't match.");
fprintf(stderr, "Failed. Contents didn't match.");
return 1;
}
ecc_free (&usera);

2
testprof/x86_prof.c
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@ -724,7 +724,7 @@ void time_ecc(void)
unsigned char buf[2][4096];
unsigned long i, x, y, z;
int err;
static unsigned long sizes[] = {160/8, 256/8, 521/8, 100000};
static unsigned long sizes[] = {192/8, 256/8, 384/8, 521/8, 100000};
for (x = sizes[i=0]; x < 100000; x = sizes[++i]) {
t2 = 0;