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Hakase
2020-02-17 23:45:59 +09:00
parent 9dfeec3942
commit f85de4da03
381 changed files with 7278 additions and 1826 deletions
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crypto/dsa/dsa_key.c
+31 -26
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@@ -7,6 +7,12 @@
* https://www.openssl.org/source/license.html
*/
/*
* DSA low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <stdio.h>
#include <time.h>
#include "internal/cryptlib.h"
@@ -14,31 +20,43 @@
#include "crypto/dsa.h"
#include "dsa_local.h"
static int dsa_builtin_keygen(OPENSSL_CTX *libctx, DSA *dsa);
static int dsa_builtin_keygen(DSA *dsa);
int DSA_generate_key(DSA *dsa)
{
if (dsa->meth->dsa_keygen != NULL)
return dsa->meth->dsa_keygen(dsa);
return dsa_builtin_keygen(NULL, dsa);
}
int dsa_generate_key_ctx(OPENSSL_CTX *libctx, DSA *dsa)
{
#ifndef FIPS_MODE
if (dsa->meth->dsa_keygen != NULL)
return dsa->meth->dsa_keygen(dsa);
#endif
return dsa_builtin_keygen(libctx, dsa);
return dsa_builtin_keygen(dsa);
}
static int dsa_builtin_keygen(OPENSSL_CTX *libctx, DSA *dsa)
int dsa_generate_public_key(BN_CTX *ctx, const DSA *dsa, const BIGNUM *priv_key,
BIGNUM *pub_key)
{
int ret = 0;
BIGNUM *prk = BN_new();
if (prk == NULL)
return 0;
BN_with_flags(prk, priv_key, BN_FLG_CONSTTIME);
/* pub_key = g ^ priv_key mod p */
if (!BN_mod_exp(pub_key, dsa->params.g, prk, dsa->params.p, ctx))
goto err;
ret = 1;
err:
BN_clear_free(prk);
return ret;
}
static int dsa_builtin_keygen(DSA *dsa)
{
int ok = 0;
BN_CTX *ctx = NULL;
BIGNUM *pub_key = NULL, *priv_key = NULL;
if ((ctx = BN_CTX_new_ex(libctx)) == NULL)
if ((ctx = BN_CTX_new_ex(dsa->libctx)) == NULL)
goto err;
if (dsa->priv_key == NULL) {
@@ -59,21 +77,8 @@ static int dsa_builtin_keygen(OPENSSL_CTX *libctx, DSA *dsa)
pub_key = dsa->pub_key;
}
{
BIGNUM *prk = BN_new();
if (prk == NULL)
goto err;
BN_with_flags(prk, priv_key, BN_FLG_CONSTTIME);
/* pub_key = g ^ priv_key mod p */
if (!BN_mod_exp(pub_key, dsa->params.g, prk, dsa->params.p, ctx)) {
BN_free(prk);
goto err;
}
/* We MUST free prk before any further use of priv_key */
BN_free(prk);
}
if (!dsa_generate_public_key(ctx, dsa, priv_key, pub_key))
goto err;
dsa->priv_key = priv_key;
dsa->pub_key = pub_key;