/*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
-/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
+/*
+ * DSA low level APIs are deprecated for public use, but still ok for
+ * internal use.
+ */
+#include "internal/deprecated.h"
-#include <stdio.h>
+#include <openssl/bn.h>
+#ifndef FIPS_MODULE
+# include <openssl/engine.h>
+#endif
#include "internal/cryptlib.h"
#include "internal/refcount.h"
-#include <openssl/bn.h>
-#include "dsa_locl.h"
-#include <openssl/asn1.h>
-#include <openssl/engine.h>
-#include <openssl/dh.h>
+#include "crypto/dsa.h"
+#include "crypto/dh.h" /* required by DSA_dup_DH() */
+#include "dsa_local.h"
-DSA *DSA_new(void)
+static DSA *dsa_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx);
+
+#ifndef FIPS_MODULE
+
+int DSA_set_ex_data(DSA *d, int idx, void *arg)
+{
+ return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
+}
+
+void *DSA_get_ex_data(const DSA *d, int idx)
{
- return DSA_new_method(NULL);
+ return CRYPTO_get_ex_data(&d->ex_data, idx);
+}
+
+# ifndef OPENSSL_NO_DH
+DH *DSA_dup_DH(const DSA *r)
+{
+ /*
+ * DSA has p, q, g, optional pub_key, optional priv_key.
+ * DH has p, optional length, g, optional pub_key,
+ * optional priv_key, optional q.
+ */
+ DH *ret = NULL;
+ BIGNUM *pub_key = NULL, *priv_key = NULL;
+
+ if (r == NULL)
+ goto err;
+ ret = DH_new();
+ if (ret == NULL)
+ goto err;
+
+ if (!ossl_ffc_params_copy(ossl_dh_get0_params(ret), &r->params))
+ goto err;
+
+ if (r->pub_key != NULL) {
+ pub_key = BN_dup(r->pub_key);
+ if (pub_key == NULL)
+ goto err;
+ if (r->priv_key != NULL) {
+ priv_key = BN_dup(r->priv_key);
+ if (priv_key == NULL)
+ goto err;
+ }
+ if (!DH_set0_key(ret, pub_key, priv_key))
+ goto err;
+ } else if (r->priv_key != NULL) {
+ /* Shouldn't happen */
+ goto err;
+ }
+
+ return ret;
+
+ err:
+ BN_free(pub_key);
+ BN_free(priv_key);
+ DH_free(ret);
+ return NULL;
+}
+# endif /* OPENSSL_NO_DH */
+
+void DSA_clear_flags(DSA *d, int flags)
+{
+ d->flags &= ~flags;
+}
+
+int DSA_test_flags(const DSA *d, int flags)
+{
+ return d->flags & flags;
+}
+
+void DSA_set_flags(DSA *d, int flags)
+{
+ d->flags |= flags;
+}
+
+ENGINE *DSA_get0_engine(DSA *d)
+{
+ return d->engine;
}
int DSA_set_method(DSA *dsa, const DSA_METHOD *meth)
meth->init(dsa);
return 1;
}
+#endif /* FIPS_MODULE */
+
const DSA_METHOD *DSA_get_method(DSA *d)
{
return d->meth;
}
-DSA *DSA_new_method(ENGINE *engine)
+static DSA *dsa_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx)
{
DSA *ret = OPENSSL_zalloc(sizeof(*ret));
- if (ret == NULL) {
- DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ if (ret == NULL)
return NULL;
- }
- ret->references = 1;
ret->lock = CRYPTO_THREAD_lock_new();
if (ret->lock == NULL) {
- DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_DSA, ERR_R_CRYPTO_LIB);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+
+ if (!CRYPTO_NEW_REF(&ret->references, 1)) {
+ CRYPTO_THREAD_lock_free(ret->lock);
OPENSSL_free(ret);
return NULL;
}
+ ret->libctx = libctx;
ret->meth = DSA_get_default_method();
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
ret->flags = ret->meth->flags & ~DSA_FLAG_NON_FIPS_ALLOW; /* early default init */
if (engine) {
if (!ENGINE_init(engine)) {
- DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_ENGINE_LIB);
+ ERR_raise(ERR_LIB_DSA, ERR_R_ENGINE_LIB);
goto err;
}
ret->engine = engine;
if (ret->engine) {
ret->meth = ENGINE_get_DSA(ret->engine);
if (ret->meth == NULL) {
- DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_ENGINE_LIB);
+ ERR_raise(ERR_LIB_DSA, ERR_R_ENGINE_LIB);
goto err;
}
}
ret->flags = ret->meth->flags & ~DSA_FLAG_NON_FIPS_ALLOW;
- if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DSA, ret, &ret->ex_data))
+#ifndef FIPS_MODULE
+ if (!ossl_crypto_new_ex_data_ex(libctx, CRYPTO_EX_INDEX_DSA, ret,
+ &ret->ex_data))
goto err;
+#endif
+
+ ossl_ffc_params_init(&ret->params);
if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
- DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_INIT_FAIL);
-err:
- DSA_free(ret);
- ret = NULL;
+ ERR_raise(ERR_LIB_DSA, ERR_R_INIT_FAIL);
+ goto err;
}
return ret;
+
+ err:
+ DSA_free(ret);
+ return NULL;
+}
+
+DSA *DSA_new_method(ENGINE *engine)
+{
+ return dsa_new_intern(engine, NULL);
+}
+
+DSA *ossl_dsa_new(OSSL_LIB_CTX *libctx)
+{
+ return dsa_new_intern(NULL, libctx);
}
+#ifndef FIPS_MODULE
+DSA *DSA_new(void)
+{
+ return dsa_new_intern(NULL, NULL);
+}
+#endif
+
void DSA_free(DSA *r)
{
int i;
if (r == NULL)
return;
- CRYPTO_DOWN_REF(&r->references, &i, r->lock);
+ CRYPTO_DOWN_REF(&r->references, &i);
REF_PRINT_COUNT("DSA", r);
if (i > 0)
return;
REF_ASSERT_ISNT(i < 0);
- if (r->meth->finish)
+ if (r->meth != NULL && r->meth->finish != NULL)
r->meth->finish(r);
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
ENGINE_finish(r->engine);
#endif
+#ifndef FIPS_MODULE
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DSA, r, &r->ex_data);
+#endif
CRYPTO_THREAD_lock_free(r->lock);
+ CRYPTO_FREE_REF(&r->references);
- BN_clear_free(r->p);
- BN_clear_free(r->q);
- BN_clear_free(r->g);
+ ossl_ffc_params_cleanup(&r->params);
BN_clear_free(r->pub_key);
BN_clear_free(r->priv_key);
OPENSSL_free(r);
{
int i;
- if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
+ if (CRYPTO_UP_REF(&r->references, &i) <= 0)
return 0;
REF_PRINT_COUNT("DSA", r);
return ((i > 1) ? 1 : 0);
}
-int DSA_size(const DSA *r)
+void ossl_dsa_set0_libctx(DSA *d, OSSL_LIB_CTX *libctx)
{
- int ret, i;
- ASN1_INTEGER bs;
- unsigned char buf[4]; /* 4 bytes looks really small. However,
- * i2d_ASN1_INTEGER() will not look beyond
- * the first byte, as long as the second
- * parameter is NULL. */
-
- i = BN_num_bits(r->q);
- bs.length = (i + 7) / 8;
- bs.data = buf;
- bs.type = V_ASN1_INTEGER;
- /* If the top bit is set the asn1 encoding is 1 larger. */
- buf[0] = 0xff;
-
- i = i2d_ASN1_INTEGER(&bs, NULL);
- i += i; /* r and s */
- ret = ASN1_object_size(1, i, V_ASN1_SEQUENCE);
- return (ret);
+ d->libctx = libctx;
}
-int DSA_set_ex_data(DSA *d, int idx, void *arg)
+void DSA_get0_pqg(const DSA *d,
+ const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
{
- return (CRYPTO_set_ex_data(&d->ex_data, idx, arg));
+ ossl_ffc_params_get0_pqg(&d->params, p, q, g);
}
-void *DSA_get_ex_data(DSA *d, int idx)
+int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
{
- return (CRYPTO_get_ex_data(&d->ex_data, idx));
+ /* If the fields p, q and g in d are NULL, the corresponding input
+ * parameters MUST be non-NULL.
+ */
+ if ((d->params.p == NULL && p == NULL)
+ || (d->params.q == NULL && q == NULL)
+ || (d->params.g == NULL && g == NULL))
+ return 0;
+
+ ossl_ffc_params_set0_pqg(&d->params, p, q, g);
+ d->dirty_cnt++;
+
+ return 1;
}
-int DSA_security_bits(const DSA *d)
+const BIGNUM *DSA_get0_p(const DSA *d)
{
- if (d->p && d->q)
- return BN_security_bits(BN_num_bits(d->p), BN_num_bits(d->q));
- return -1;
+ return d->params.p;
}
-#ifndef OPENSSL_NO_DH
-DH *DSA_dup_DH(const DSA *r)
+const BIGNUM *DSA_get0_q(const DSA *d)
{
- /*
- * DSA has p, q, g, optional pub_key, optional priv_key. DH has p,
- * optional length, g, optional pub_key, optional priv_key, optional q.
- */
-
- DH *ret = NULL;
- BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL, *priv_key = NULL;
-
- if (r == NULL)
- goto err;
- ret = DH_new();
- if (ret == NULL)
- goto err;
- if (r->p != NULL || r->g != NULL || r->q != NULL) {
- if (r->p == NULL || r->g == NULL || r->q == NULL) {
- /* Shouldn't happen */
- goto err;
- }
- p = BN_dup(r->p);
- g = BN_dup(r->g);
- q = BN_dup(r->q);
- if (p == NULL || g == NULL || q == NULL || !DH_set0_pqg(ret, p, q, g))
- goto err;
- p = g = q = NULL;
- }
-
- if (r->pub_key != NULL) {
- pub_key = BN_dup(r->pub_key);
- if (pub_key == NULL)
- goto err;
- if (r->priv_key != NULL) {
- priv_key = BN_dup(r->priv_key);
- if (priv_key == NULL)
- goto err;
- }
- if (!DH_set0_key(ret, pub_key, priv_key))
- goto err;
- } else if (r->priv_key != NULL) {
- /* Shouldn't happen */
- goto err;
- }
-
- return ret;
-
- err:
- BN_free(p);
- BN_free(g);
- BN_free(q);
- BN_free(pub_key);
- BN_free(priv_key);
- DH_free(ret);
- return NULL;
+ return d->params.q;
}
-#endif
-void DSA_get0_pqg(const DSA *d,
- const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
+const BIGNUM *DSA_get0_g(const DSA *d)
{
- if (p != NULL)
- *p = d->p;
- if (q != NULL)
- *q = d->q;
- if (g != NULL)
- *g = d->g;
+ return d->params.g;
}
-int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
+const BIGNUM *DSA_get0_pub_key(const DSA *d)
{
- /* If the fields p, q and g in d are NULL, the corresponding input
- * parameters MUST be non-NULL.
- */
- if ((d->p == NULL && p == NULL)
- || (d->q == NULL && q == NULL)
- || (d->g == NULL && g == NULL))
- return 0;
-
- if (p != NULL) {
- BN_free(d->p);
- d->p = p;
- }
- if (q != NULL) {
- BN_free(d->q);
- d->q = q;
- }
- if (g != NULL) {
- BN_free(d->g);
- d->g = g;
- }
+ return d->pub_key;
+}
- return 1;
+const BIGNUM *DSA_get0_priv_key(const DSA *d)
+{
+ return d->priv_key;
}
void DSA_get0_key(const DSA *d,
int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
{
- /* If the field pub_key in d is NULL, the corresponding input
- * parameters MUST be non-NULL. The priv_key field may
- * be left NULL.
- */
- if (d->pub_key == NULL && pub_key == NULL)
- return 0;
-
if (pub_key != NULL) {
BN_free(d->pub_key);
d->pub_key = pub_key;
BN_free(d->priv_key);
d->priv_key = priv_key;
}
+ d->dirty_cnt++;
return 1;
}
-void DSA_clear_flags(DSA *d, int flags)
+int DSA_security_bits(const DSA *d)
{
- d->flags &= ~flags;
+ if (d->params.p != NULL && d->params.q != NULL)
+ return BN_security_bits(BN_num_bits(d->params.p),
+ BN_num_bits(d->params.q));
+ return -1;
}
-int DSA_test_flags(const DSA *d, int flags)
+int DSA_bits(const DSA *dsa)
{
- return d->flags & flags;
+ if (dsa->params.p != NULL)
+ return BN_num_bits(dsa->params.p);
+ return -1;
}
-void DSA_set_flags(DSA *d, int flags)
+FFC_PARAMS *ossl_dsa_get0_params(DSA *dsa)
{
- d->flags |= flags;
+ return &dsa->params;
}
-ENGINE *DSA_get0_engine(DSA *d)
+int ossl_dsa_ffc_params_fromdata(DSA *dsa, const OSSL_PARAM params[])
{
- return d->engine;
-}
+ int ret;
+ FFC_PARAMS *ffc = ossl_dsa_get0_params(dsa);
-int DSA_bits(const DSA *dsa)
-{
- return BN_num_bits(dsa->p);
+ ret = ossl_ffc_params_fromdata(ffc, params);
+ if (ret)
+ dsa->dirty_cnt++;
+ return ret;
}
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