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Import code from previous AssetBuilder version

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Jan
2019-09-24 10:45:09 +02:00
parent 5609557516
commit 0d8432d4f7
919 changed files with 154412 additions and 26 deletions
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112
thirdparty/libtomcrypt/pk/dsa/dsa_set.c vendored Normal file
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*/
#include "tomcrypt.h"
#ifdef LTC_MDSA
/**
Import DSA's p, q & g from raw numbers
@param p DSA's p in binary representation
@param plen The length of p
@param q DSA's q in binary representation
@param qlen The length of q
@param g DSA's g in binary representation
@param glen The length of g
@param key [out] the destination for the imported key
@return CRYPT_OK if successful.
*/
int dsa_set_pqg(const unsigned char *p, unsigned long plen,
const unsigned char *q, unsigned long qlen,
const unsigned char *g, unsigned long glen,
dsa_key *key)
{
int err, stat;
LTC_ARGCHK(p != NULL);
LTC_ARGCHK(q != NULL);
LTC_ARGCHK(g != NULL);
LTC_ARGCHK(key != NULL);
LTC_ARGCHK(ltc_mp.name != NULL);
/* init key */
err = mp_init_multi(&key->p, &key->g, &key->q, &key->x, &key->y, NULL);
if (err != CRYPT_OK) return err;
if ((err = mp_read_unsigned_bin(key->p, (unsigned char *)p , plen)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_unsigned_bin(key->g, (unsigned char *)g , glen)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_read_unsigned_bin(key->q, (unsigned char *)q , qlen)) != CRYPT_OK) { goto LBL_ERR; }
key->qord = mp_unsigned_bin_size(key->q);
/* do only a quick validation, without primality testing */
if ((err = dsa_int_validate_pqg(key, &stat)) != CRYPT_OK) { goto LBL_ERR; }
if (stat == 0) {
err = CRYPT_INVALID_PACKET;
goto LBL_ERR;
}
return CRYPT_OK;
LBL_ERR:
dsa_free(key);
return err;
}
/**
Import DSA public or private key-part from raw numbers
NB: The p, q & g parts must be set beforehand
@param in The key-part to import, either public or private.
@param inlen The key-part's length
@param type Which type of key (PK_PRIVATE or PK_PUBLIC)
@param key [out] the destination for the imported key
@return CRYPT_OK if successful.
*/
int dsa_set_key(const unsigned char *in, unsigned long inlen, int type, dsa_key *key)
{
int err, stat = 0;
LTC_ARGCHK(key != NULL);
LTC_ARGCHK(key->x != NULL);
LTC_ARGCHK(key->y != NULL);
LTC_ARGCHK(key->p != NULL);
LTC_ARGCHK(key->g != NULL);
LTC_ARGCHK(key->q != NULL);
LTC_ARGCHK(ltc_mp.name != NULL);
if (type == PK_PRIVATE) {
key->type = PK_PRIVATE;
if ((err = mp_read_unsigned_bin(key->x, (unsigned char *)in, inlen)) != CRYPT_OK) { goto LBL_ERR; }
if ((err = mp_exptmod(key->g, key->x, key->p, key->y)) != CRYPT_OK) { goto LBL_ERR; }
}
else {
key->type = PK_PUBLIC;
if ((err = mp_read_unsigned_bin(key->y, (unsigned char *)in, inlen)) != CRYPT_OK) { goto LBL_ERR; }
}
if ((err = dsa_int_validate_xy(key, &stat)) != CRYPT_OK) { goto LBL_ERR; }
if (stat == 0) {
err = CRYPT_INVALID_PACKET;
goto LBL_ERR;
}
return CRYPT_OK;
LBL_ERR:
dsa_free(key);
return err;
}
#endif
/* ref: HEAD -> master, tag: v1.18.2 */
/* git commit: 7e7eb695d581782f04b24dc444cbfde86af59853 */
/* commit time: 2018-07-01 22:49:01 +0200 */