mirror of
https://github.com/openssl/openssl.git
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12a765a523
Also added blanks lines after declarations in a couple of places. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/9916)
647 lines
16 KiB
C
647 lines
16 KiB
C
/*
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* Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <openssl/x509.h>
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#include <openssl/asn1.h>
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#include <openssl/bn.h>
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#include <openssl/cms.h>
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#include <openssl/core_names.h>
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#include "internal/cryptlib.h"
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#include "crypto/asn1.h"
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#include "crypto/evp.h"
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#include "internal/param_build.h"
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#include "dsa_local.h"
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static int dsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
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{
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const unsigned char *p, *pm;
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int pklen, pmlen;
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int ptype;
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const void *pval;
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const ASN1_STRING *pstr;
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X509_ALGOR *palg;
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ASN1_INTEGER *public_key = NULL;
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DSA *dsa = NULL;
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if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
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return 0;
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X509_ALGOR_get0(NULL, &ptype, &pval, palg);
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if (ptype == V_ASN1_SEQUENCE) {
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pstr = pval;
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pm = pstr->data;
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pmlen = pstr->length;
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if ((dsa = d2i_DSAparams(NULL, &pm, pmlen)) == NULL) {
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DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
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goto err;
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}
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} else if ((ptype == V_ASN1_NULL) || (ptype == V_ASN1_UNDEF)) {
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if ((dsa = DSA_new()) == NULL) {
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DSAerr(DSA_F_DSA_PUB_DECODE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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} else {
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DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_PARAMETER_ENCODING_ERROR);
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goto err;
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}
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if ((public_key = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL) {
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DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
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goto err;
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}
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if ((dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL)) == NULL) {
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DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_BN_DECODE_ERROR);
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goto err;
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}
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dsa->dirty_cnt++;
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ASN1_INTEGER_free(public_key);
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EVP_PKEY_assign_DSA(pkey, dsa);
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return 1;
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err:
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ASN1_INTEGER_free(public_key);
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DSA_free(dsa);
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return 0;
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}
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static int dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
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{
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DSA *dsa;
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int ptype;
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unsigned char *penc = NULL;
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int penclen;
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ASN1_STRING *str = NULL;
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ASN1_INTEGER *pubint = NULL;
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ASN1_OBJECT *aobj;
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dsa = pkey->pkey.dsa;
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if (pkey->save_parameters && dsa->p && dsa->q && dsa->g) {
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str = ASN1_STRING_new();
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if (str == NULL) {
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DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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str->length = i2d_DSAparams(dsa, &str->data);
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if (str->length <= 0) {
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DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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ptype = V_ASN1_SEQUENCE;
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} else
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ptype = V_ASN1_UNDEF;
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pubint = BN_to_ASN1_INTEGER(dsa->pub_key, NULL);
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if (pubint == NULL) {
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DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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penclen = i2d_ASN1_INTEGER(pubint, &penc);
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ASN1_INTEGER_free(pubint);
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if (penclen <= 0) {
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DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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aobj = OBJ_nid2obj(EVP_PKEY_DSA);
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if (aobj == NULL)
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goto err;
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if (X509_PUBKEY_set0_param(pk, aobj, ptype, str, penc, penclen))
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return 1;
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err:
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OPENSSL_free(penc);
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ASN1_STRING_free(str);
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return 0;
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}
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/*
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* In PKCS#8 DSA: you just get a private key integer and parameters in the
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* AlgorithmIdentifier the pubkey must be recalculated.
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*/
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static int dsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
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{
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const unsigned char *p, *pm;
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int pklen, pmlen;
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int ptype;
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const void *pval;
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const ASN1_STRING *pstr;
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const X509_ALGOR *palg;
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ASN1_INTEGER *privkey = NULL;
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BN_CTX *ctx = NULL;
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DSA *dsa = NULL;
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int ret = 0;
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if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
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return 0;
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X509_ALGOR_get0(NULL, &ptype, &pval, palg);
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if ((privkey = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL)
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goto decerr;
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if (privkey->type == V_ASN1_NEG_INTEGER || ptype != V_ASN1_SEQUENCE)
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goto decerr;
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pstr = pval;
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pm = pstr->data;
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pmlen = pstr->length;
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if ((dsa = d2i_DSAparams(NULL, &pm, pmlen)) == NULL)
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goto decerr;
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/* We have parameters now set private key */
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if ((dsa->priv_key = BN_secure_new()) == NULL
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|| !ASN1_INTEGER_to_BN(privkey, dsa->priv_key)) {
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DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR);
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goto dsaerr;
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}
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/* Calculate public key */
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if ((dsa->pub_key = BN_new()) == NULL) {
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DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
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goto dsaerr;
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}
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if ((ctx = BN_CTX_new()) == NULL) {
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DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
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goto dsaerr;
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}
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BN_set_flags(dsa->priv_key, BN_FLG_CONSTTIME);
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if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) {
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DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR);
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goto dsaerr;
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}
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dsa->dirty_cnt++;
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EVP_PKEY_assign_DSA(pkey, dsa);
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ret = 1;
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goto done;
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decerr:
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DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_DECODE_ERROR);
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dsaerr:
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DSA_free(dsa);
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done:
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BN_CTX_free(ctx);
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ASN1_STRING_clear_free(privkey);
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return ret;
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}
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static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
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{
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ASN1_STRING *params = NULL;
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ASN1_INTEGER *prkey = NULL;
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unsigned char *dp = NULL;
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int dplen;
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if (pkey->pkey.dsa == NULL|| pkey->pkey.dsa->priv_key == NULL) {
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DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_MISSING_PARAMETERS);
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goto err;
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}
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params = ASN1_STRING_new();
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if (params == NULL) {
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DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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params->length = i2d_DSAparams(pkey->pkey.dsa, ¶ms->data);
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if (params->length <= 0) {
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DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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params->type = V_ASN1_SEQUENCE;
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/* Get private key into integer */
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prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL);
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if (prkey == NULL) {
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DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_BN_ERROR);
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goto err;
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}
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dplen = i2d_ASN1_INTEGER(prkey, &dp);
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ASN1_STRING_clear_free(prkey);
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prkey = NULL;
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if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0,
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V_ASN1_SEQUENCE, params, dp, dplen))
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goto err;
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return 1;
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err:
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OPENSSL_free(dp);
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ASN1_STRING_free(params);
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ASN1_STRING_clear_free(prkey);
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return 0;
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}
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static int int_dsa_size(const EVP_PKEY *pkey)
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{
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return DSA_size(pkey->pkey.dsa);
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}
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static int dsa_bits(const EVP_PKEY *pkey)
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{
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return DSA_bits(pkey->pkey.dsa);
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}
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static int dsa_security_bits(const EVP_PKEY *pkey)
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{
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return DSA_security_bits(pkey->pkey.dsa);
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}
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static int dsa_missing_parameters(const EVP_PKEY *pkey)
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{
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DSA *dsa;
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dsa = pkey->pkey.dsa;
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if (dsa == NULL || dsa->p == NULL || dsa->q == NULL || dsa->g == NULL)
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return 1;
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return 0;
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}
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static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
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{
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BIGNUM *a;
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if (to->pkey.dsa == NULL) {
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to->pkey.dsa = DSA_new();
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if (to->pkey.dsa == NULL)
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return 0;
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}
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if ((a = BN_dup(from->pkey.dsa->p)) == NULL)
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return 0;
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BN_free(to->pkey.dsa->p);
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to->pkey.dsa->p = a;
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if ((a = BN_dup(from->pkey.dsa->q)) == NULL)
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return 0;
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BN_free(to->pkey.dsa->q);
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to->pkey.dsa->q = a;
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if ((a = BN_dup(from->pkey.dsa->g)) == NULL)
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return 0;
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BN_free(to->pkey.dsa->g);
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to->pkey.dsa->g = a;
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to->pkey.dsa->dirty_cnt++;
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return 1;
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}
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static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
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{
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if (BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) ||
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BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) ||
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BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g))
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return 0;
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else
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return 1;
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}
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static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
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{
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if (BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) != 0)
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return 0;
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else
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return 1;
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}
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static void int_dsa_free(EVP_PKEY *pkey)
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{
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DSA_free(pkey->pkey.dsa);
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}
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static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype)
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{
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int ret = 0;
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const char *ktype = NULL;
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const BIGNUM *priv_key, *pub_key;
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int mod_len = 0;
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if (x->p != NULL)
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mod_len = BN_num_bits(x->p);
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if (ptype == 2)
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priv_key = x->priv_key;
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else
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priv_key = NULL;
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if (ptype > 0)
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pub_key = x->pub_key;
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else
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pub_key = NULL;
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if (ptype == 2)
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ktype = "Private-Key";
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else if (ptype == 1)
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ktype = "Public-Key";
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else
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ktype = "DSA-Parameters";
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if (priv_key) {
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if (!BIO_indent(bp, off, 128))
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goto err;
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if (BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p))
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<= 0)
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goto err;
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} else {
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if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0)
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goto err;
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}
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if (!ASN1_bn_print(bp, "priv:", priv_key, NULL, off))
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goto err;
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if (!ASN1_bn_print(bp, "pub: ", pub_key, NULL, off))
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goto err;
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if (!ASN1_bn_print(bp, "P: ", x->p, NULL, off))
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goto err;
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if (!ASN1_bn_print(bp, "Q: ", x->q, NULL, off))
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goto err;
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if (!ASN1_bn_print(bp, "G: ", x->g, NULL, off))
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goto err;
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ret = 1;
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err:
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return ret;
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}
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static int dsa_param_decode(EVP_PKEY *pkey,
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const unsigned char **pder, int derlen)
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{
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DSA *dsa;
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if ((dsa = d2i_DSAparams(NULL, pder, derlen)) == NULL) {
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DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB);
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return 0;
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}
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dsa->dirty_cnt++;
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EVP_PKEY_assign_DSA(pkey, dsa);
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return 1;
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}
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static int dsa_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
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{
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return i2d_DSAparams(pkey->pkey.dsa, pder);
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}
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static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_dsa_print(bp, pkey->pkey.dsa, indent, 0);
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}
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static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_dsa_print(bp, pkey->pkey.dsa, indent, 1);
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}
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static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *ctx)
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{
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return do_dsa_print(bp, pkey->pkey.dsa, indent, 2);
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}
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static int old_dsa_priv_decode(EVP_PKEY *pkey,
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const unsigned char **pder, int derlen)
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{
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DSA *dsa;
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if ((dsa = d2i_DSAPrivateKey(NULL, pder, derlen)) == NULL) {
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DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB);
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return 0;
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}
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dsa->dirty_cnt++;
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EVP_PKEY_assign_DSA(pkey, dsa);
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return 1;
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}
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static int old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
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{
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return i2d_DSAPrivateKey(pkey->pkey.dsa, pder);
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}
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static int dsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
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const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx)
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{
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DSA_SIG *dsa_sig;
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const unsigned char *p;
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if (!sig) {
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if (BIO_puts(bp, "\n") <= 0)
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return 0;
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else
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return 1;
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}
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p = sig->data;
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dsa_sig = d2i_DSA_SIG(NULL, &p, sig->length);
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if (dsa_sig) {
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int rv = 0;
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const BIGNUM *r, *s;
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DSA_SIG_get0(dsa_sig, &r, &s);
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if (BIO_write(bp, "\n", 1) != 1)
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goto err;
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if (!ASN1_bn_print(bp, "r: ", r, NULL, indent))
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goto err;
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if (!ASN1_bn_print(bp, "s: ", s, NULL, indent))
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goto err;
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rv = 1;
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err:
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DSA_SIG_free(dsa_sig);
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return rv;
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}
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if (BIO_puts(bp, "\n") <= 0)
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return 0;
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return X509_signature_dump(bp, sig, indent);
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}
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static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
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{
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switch (op) {
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case ASN1_PKEY_CTRL_PKCS7_SIGN:
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if (arg1 == 0) {
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int snid, hnid;
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X509_ALGOR *alg1, *alg2;
|
|
PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
|
|
if (alg1 == NULL || alg1->algorithm == NULL)
|
|
return -1;
|
|
hnid = OBJ_obj2nid(alg1->algorithm);
|
|
if (hnid == NID_undef)
|
|
return -1;
|
|
if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
|
|
return -1;
|
|
X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
|
|
}
|
|
return 1;
|
|
#ifndef OPENSSL_NO_CMS
|
|
case ASN1_PKEY_CTRL_CMS_SIGN:
|
|
if (arg1 == 0) {
|
|
int snid, hnid;
|
|
X509_ALGOR *alg1, *alg2;
|
|
CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
|
|
if (alg1 == NULL || alg1->algorithm == NULL)
|
|
return -1;
|
|
hnid = OBJ_obj2nid(alg1->algorithm);
|
|
if (hnid == NID_undef)
|
|
return -1;
|
|
if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
|
|
return -1;
|
|
X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
|
|
}
|
|
return 1;
|
|
|
|
case ASN1_PKEY_CTRL_CMS_RI_TYPE:
|
|
*(int *)arg2 = CMS_RECIPINFO_NONE;
|
|
return 1;
|
|
#endif
|
|
|
|
case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
|
|
*(int *)arg2 = NID_sha256;
|
|
return 1;
|
|
|
|
default:
|
|
return -2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
static size_t dsa_pkey_dirty_cnt(const EVP_PKEY *pkey)
|
|
{
|
|
return pkey->pkey.dsa->dirty_cnt;
|
|
}
|
|
|
|
static void *dsa_pkey_export_to(const EVP_PKEY *pk, EVP_KEYMGMT *keymgmt)
|
|
{
|
|
DSA *dsa = pk->pkey.dsa;
|
|
OSSL_PARAM_BLD tmpl;
|
|
const BIGNUM *p = DSA_get0_p(dsa), *g = DSA_get0_g(dsa);
|
|
const BIGNUM *q = DSA_get0_q(dsa), *pub_key = DSA_get0_pub_key(dsa);
|
|
const BIGNUM *priv_key = DSA_get0_priv_key(dsa);
|
|
OSSL_PARAM *params;
|
|
void *provkey = NULL;
|
|
|
|
if (p == NULL || q == NULL || g == NULL)
|
|
return NULL;
|
|
|
|
ossl_param_bld_init(&tmpl);
|
|
if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_FFC_P, p)
|
|
|| !ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_FFC_Q, q)
|
|
|| !ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_FFC_G, g))
|
|
return NULL;
|
|
|
|
/*
|
|
* This may be used to pass domain parameters only without any key data -
|
|
* so "pub_key" is optional. We can never have a "priv_key" without a
|
|
* corresponding "pub_key" though.
|
|
*/
|
|
if (pub_key != NULL) {
|
|
if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_DSA_PUB_KEY,
|
|
pub_key))
|
|
return NULL;
|
|
|
|
if (priv_key != NULL) {
|
|
if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_DSA_PRIV_KEY,
|
|
priv_key))
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
params = ossl_param_bld_to_param(&tmpl);
|
|
|
|
/* We export, the provider imports */
|
|
provkey = evp_keymgmt_importkey(keymgmt, params);
|
|
|
|
ossl_param_bld_free(params);
|
|
return provkey;
|
|
}
|
|
|
|
/* NB these are sorted in pkey_id order, lowest first */
|
|
|
|
const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[5] = {
|
|
|
|
{
|
|
EVP_PKEY_DSA2,
|
|
EVP_PKEY_DSA,
|
|
ASN1_PKEY_ALIAS},
|
|
|
|
{
|
|
EVP_PKEY_DSA1,
|
|
EVP_PKEY_DSA,
|
|
ASN1_PKEY_ALIAS},
|
|
|
|
{
|
|
EVP_PKEY_DSA4,
|
|
EVP_PKEY_DSA,
|
|
ASN1_PKEY_ALIAS},
|
|
|
|
{
|
|
EVP_PKEY_DSA3,
|
|
EVP_PKEY_DSA,
|
|
ASN1_PKEY_ALIAS},
|
|
|
|
{
|
|
EVP_PKEY_DSA,
|
|
EVP_PKEY_DSA,
|
|
0,
|
|
|
|
"DSA",
|
|
"OpenSSL DSA method",
|
|
|
|
dsa_pub_decode,
|
|
dsa_pub_encode,
|
|
dsa_pub_cmp,
|
|
dsa_pub_print,
|
|
|
|
dsa_priv_decode,
|
|
dsa_priv_encode,
|
|
dsa_priv_print,
|
|
|
|
int_dsa_size,
|
|
dsa_bits,
|
|
dsa_security_bits,
|
|
|
|
dsa_param_decode,
|
|
dsa_param_encode,
|
|
dsa_missing_parameters,
|
|
dsa_copy_parameters,
|
|
dsa_cmp_parameters,
|
|
dsa_param_print,
|
|
dsa_sig_print,
|
|
|
|
int_dsa_free,
|
|
dsa_pkey_ctrl,
|
|
old_dsa_priv_decode,
|
|
old_dsa_priv_encode,
|
|
|
|
NULL, NULL, NULL,
|
|
NULL, NULL, NULL,
|
|
NULL, NULL, NULL, NULL,
|
|
|
|
dsa_pkey_dirty_cnt,
|
|
dsa_pkey_export_to
|
|
}
|
|
};
|