[thirdparty/openssl.git] / crypto / dsa / dsa_ameth.c

/*
 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * 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
 */

#include <stdio.h>
#include <openssl/x509.h>
#include <openssl/asn1.h>
#include <openssl/bn.h>
#include <openssl/cms.h>
#include <openssl/core_names.h>
#include "internal/cryptlib.h"
#include "internal/asn1_int.h"
#include "internal/evp_int.h"
#include "internal/param_build.h"
#include "dsa_locl.h"

static int dsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
{
    const unsigned char *p, *pm;
    int pklen, pmlen;
    int ptype;
    const void *pval;
    const ASN1_STRING *pstr;
    X509_ALGOR *palg;
    ASN1_INTEGER *public_key = NULL;

    DSA *dsa = NULL;

    if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
        return 0;
    X509_ALGOR_get0(NULL, &ptype, &pval, palg);

    if (ptype == V_ASN1_SEQUENCE) {
        pstr = pval;
        pm = pstr->data;
        pmlen = pstr->length;

        if ((dsa = d2i_DSAparams(NULL, &pm, pmlen)) == NULL) {
            DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
            goto err;
        }

    } else if ((ptype == V_ASN1_NULL) || (ptype == V_ASN1_UNDEF)) {
        if ((dsa = DSA_new()) == NULL) {
            DSAerr(DSA_F_DSA_PUB_DECODE, ERR_R_MALLOC_FAILURE);
            goto err;
        }
    } else {
        DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_PARAMETER_ENCODING_ERROR);
        goto err;
    }

    if ((public_key = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL) {
        DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
        goto err;
    }

    if ((dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL)) == NULL) {
        DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_BN_DECODE_ERROR);
        goto err;
    }

    dsa->dirty_cnt++;
    ASN1_INTEGER_free(public_key);
    EVP_PKEY_assign_DSA(pkey, dsa);
    return 1;

 err:
    ASN1_INTEGER_free(public_key);
    DSA_free(dsa);
    return 0;

}

static int dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
{
    DSA *dsa;
    int ptype;
    unsigned char *penc = NULL;
    int penclen;
    ASN1_STRING *str = NULL;
    ASN1_INTEGER *pubint = NULL;
    ASN1_OBJECT *aobj;

    dsa = pkey->pkey.dsa;
    if (pkey->save_parameters && dsa->p && dsa->q && dsa->g) {
        str = ASN1_STRING_new();
        if (str == NULL) {
            DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
            goto err;
        }
        str->length = i2d_DSAparams(dsa, &str->data);
        if (str->length <= 0) {
            DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
            goto err;
        }
        ptype = V_ASN1_SEQUENCE;
    } else
        ptype = V_ASN1_UNDEF;

    pubint = BN_to_ASN1_INTEGER(dsa->pub_key, NULL);

    if (pubint == NULL) {
        DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
        goto err;
    }

    penclen = i2d_ASN1_INTEGER(pubint, &penc);
    ASN1_INTEGER_free(pubint);

    if (penclen <= 0) {
        DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
        goto err;
    }

    aobj = OBJ_nid2obj(EVP_PKEY_DSA);
    if (aobj == NULL)
        goto err;

    if (X509_PUBKEY_set0_param(pk, aobj, ptype, str, penc, penclen))
        return 1;

 err:
    OPENSSL_free(penc);
    ASN1_STRING_free(str);

    return 0;
}

/*
 * In PKCS#8 DSA: you just get a private key integer and parameters in the
 * AlgorithmIdentifier the pubkey must be recalculated.
 */

static int dsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
{
    const unsigned char *p, *pm;
    int pklen, pmlen;
    int ptype;
    const void *pval;
    const ASN1_STRING *pstr;
    const X509_ALGOR *palg;
    ASN1_INTEGER *privkey = NULL;
    BN_CTX *ctx = NULL;

    DSA *dsa = NULL;

    int ret = 0;

    if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
        return 0;
    X509_ALGOR_get0(NULL, &ptype, &pval, palg);

    if ((privkey = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL)
        goto decerr;
    if (privkey->type == V_ASN1_NEG_INTEGER || ptype != V_ASN1_SEQUENCE)
        goto decerr;

    pstr = pval;
    pm = pstr->data;
    pmlen = pstr->length;
    if ((dsa = d2i_DSAparams(NULL, &pm, pmlen)) == NULL)
        goto decerr;
    /* We have parameters now set private key */
    if ((dsa->priv_key = BN_secure_new()) == NULL
        || !ASN1_INTEGER_to_BN(privkey, dsa->priv_key)) {
        DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR);
        goto dsaerr;
    }
    /* Calculate public key */
    if ((dsa->pub_key = BN_new()) == NULL) {
        DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
        goto dsaerr;
    }
    if ((ctx = BN_CTX_new()) == NULL) {
        DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
        goto dsaerr;
    }

    BN_set_flags(dsa->priv_key, BN_FLG_CONSTTIME);
    if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) {
        DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR);
        goto dsaerr;
    }

    dsa->dirty_cnt++;
    EVP_PKEY_assign_DSA(pkey, dsa);

    ret = 1;
    goto done;

 decerr:
    DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_DECODE_ERROR);
 dsaerr:
    DSA_free(dsa);
 done:
    BN_CTX_free(ctx);
    ASN1_STRING_clear_free(privkey);
    return ret;
}

static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
{
    ASN1_STRING *params = NULL;
    ASN1_INTEGER *prkey = NULL;
    unsigned char *dp = NULL;
    int dplen;

    if (!pkey->pkey.dsa || !pkey->pkey.dsa->priv_key) {
        DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_MISSING_PARAMETERS);
        goto err;
    }

    params = ASN1_STRING_new();

    if (params == NULL) {
        DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
        goto err;
    }

    params->length = i2d_DSAparams(pkey->pkey.dsa, &params->data);
    if (params->length <= 0) {
        DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
        goto err;
    }
    params->type = V_ASN1_SEQUENCE;

    /* Get private key into integer */
    prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL);

    if (!prkey) {
        DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_BN_ERROR);
        goto err;
    }

    dplen = i2d_ASN1_INTEGER(prkey, &dp);

    ASN1_STRING_clear_free(prkey);
    prkey = NULL;

    if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0,
                         V_ASN1_SEQUENCE, params, dp, dplen))
        goto err;

    return 1;

 err:
    OPENSSL_free(dp);
    ASN1_STRING_free(params);
    ASN1_STRING_clear_free(prkey);
    return 0;
}

static int int_dsa_size(const EVP_PKEY *pkey)
{
    return DSA_size(pkey->pkey.dsa);
}

static int dsa_bits(const EVP_PKEY *pkey)
{
    return DSA_bits(pkey->pkey.dsa);
}

static int dsa_security_bits(const EVP_PKEY *pkey)
{
    return DSA_security_bits(pkey->pkey.dsa);
}

static int dsa_missing_parameters(const EVP_PKEY *pkey)
{
    DSA *dsa;
    dsa = pkey->pkey.dsa;
    if (dsa == NULL || dsa->p == NULL || dsa->q == NULL || dsa->g == NULL)
        return 1;
    return 0;
}

static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
{
    BIGNUM *a;

    if (to->pkey.dsa == NULL) {
        to->pkey.dsa = DSA_new();
        if (to->pkey.dsa == NULL)
            return 0;
    }

    if ((a = BN_dup(from->pkey.dsa->p)) == NULL)
        return 0;
    BN_free(to->pkey.dsa->p);
    to->pkey.dsa->p = a;

    if ((a = BN_dup(from->pkey.dsa->q)) == NULL)
        return 0;
    BN_free(to->pkey.dsa->q);
    to->pkey.dsa->q = a;

    if ((a = BN_dup(from->pkey.dsa->g)) == NULL)
        return 0;
    BN_free(to->pkey.dsa->g);
    to->pkey.dsa->g = a;
    to->pkey.dsa->dirty_cnt++;
    return 1;
}

static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
{
    if (BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) ||
        BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) ||
        BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g))
        return 0;
    else
        return 1;
}

static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
{
    if (BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) != 0)
        return 0;
    else
        return 1;
}

static void int_dsa_free(EVP_PKEY *pkey)
{
    DSA_free(pkey->pkey.dsa);
}

static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype)
{
    int ret = 0;
    const char *ktype = NULL;
    const BIGNUM *priv_key, *pub_key;

    if (ptype == 2)
        priv_key = x->priv_key;
    else
        priv_key = NULL;

    if (ptype > 0)
        pub_key = x->pub_key;
    else
        pub_key = NULL;

    if (ptype == 2)
        ktype = "Private-Key";
    else if (ptype == 1)
        ktype = "Public-Key";
    else
        ktype = "DSA-Parameters";

    if (priv_key) {
        if (!BIO_indent(bp, off, 128))
            goto err;
        if (BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p))
            <= 0)
            goto err;
    }

    if (!ASN1_bn_print(bp, "priv:", priv_key, NULL, off))
        goto err;
    if (!ASN1_bn_print(bp, "pub: ", pub_key, NULL, off))
        goto err;
    if (!ASN1_bn_print(bp, "P:   ", x->p, NULL, off))
        goto err;
    if (!ASN1_bn_print(bp, "Q:   ", x->q, NULL, off))
        goto err;
    if (!ASN1_bn_print(bp, "G:   ", x->g, NULL, off))
        goto err;
    ret = 1;
 err:
    return ret;
}

static int dsa_param_decode(EVP_PKEY *pkey,
                            const unsigned char **pder, int derlen)
{
    DSA *dsa;

    if ((dsa = d2i_DSAparams(NULL, pder, derlen)) == NULL) {
        DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB);
        return 0;
    }
    dsa->dirty_cnt++;
    EVP_PKEY_assign_DSA(pkey, dsa);
    return 1;
}

static int dsa_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
{
    return i2d_DSAparams(pkey->pkey.dsa, pder);
}

static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent,
                           ASN1_PCTX *ctx)
{
    return do_dsa_print(bp, pkey->pkey.dsa, indent, 0);
}

static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
                         ASN1_PCTX *ctx)
{
    return do_dsa_print(bp, pkey->pkey.dsa, indent, 1);
}

static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
                          ASN1_PCTX *ctx)
{
    return do_dsa_print(bp, pkey->pkey.dsa, indent, 2);
}

static int old_dsa_priv_decode(EVP_PKEY *pkey,
                               const unsigned char **pder, int derlen)
{
    DSA *dsa;

    if ((dsa = d2i_DSAPrivateKey(NULL, pder, derlen)) == NULL) {
        DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB);
        return 0;
    }
    dsa->dirty_cnt++;
    EVP_PKEY_assign_DSA(pkey, dsa);
    return 1;
}

static int old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
{
    return i2d_DSAPrivateKey(pkey->pkey.dsa, pder);
}

static int dsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
                         const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx)
{
    DSA_SIG *dsa_sig;
    const unsigned char *p;

    if (!sig) {
        if (BIO_puts(bp, "\n") <= 0)
            return 0;
        else
            return 1;
    }
    p = sig->data;
    dsa_sig = d2i_DSA_SIG(NULL, &p, sig->length);
    if (dsa_sig) {
        int rv = 0;
        const BIGNUM *r, *s;

        DSA_SIG_get0(dsa_sig, &r, &s);

        if (BIO_write(bp, "\n", 1) != 1)
            goto err;

        if (!ASN1_bn_print(bp, "r:   ", r, NULL, indent))
            goto err;
        if (!ASN1_bn_print(bp, "s:   ", s, NULL, indent))
            goto err;
        rv = 1;
 err:
        DSA_SIG_free(dsa_sig);
        return rv;
    }
    if (BIO_puts(bp, "\n") <= 0)
        return 0;
    return X509_signature_dump(bp, sig, indent);
}

static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
{
    switch (op) {
    case ASN1_PKEY_CTRL_PKCS7_SIGN:
        if (arg1 == 0) {
            int snid, hnid;
            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
    }
};
Commit	Line	Data
0f113f3e	1	/*
d2e9e320	2	* Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
448be743	3	*
3cdbea65	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
d2e9e320 RS	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
448be743 DSH	8	*/
	9
	10	#include <stdio.h>
448be743 DSH	11	#include <openssl/x509.h>
448be743 DSH	12	#include <openssl/asn1.h>
1e26a8ba	13	#include <openssl/bn.h>
3c27208f	14	#include <openssl/cms.h>
4889dadc MC	15	#include <openssl/core_names.h>
4889dadc MC	16	#include "internal/cryptlib.h"
5fe736e5	17	#include "internal/asn1_int.h"
3aeb9348	18	#include "internal/evp_int.h"
4889dadc MC	19	#include "internal/param_build.h"
4889dadc MC	20	#include "dsa_locl.h"
448be743 DSH	21
448be743 DSH	22	static int dsa_pub_decode(EVP_PKEY pkey, X509_PUBKEY pubkey)
0f113f3e MC	23	{
	24	const unsigned char p, pm;
	25	int pklen, pmlen;
	26	int ptype;
ac4e2577 DSH	27	const void *pval;
ac4e2577 DSH	28	const ASN1_STRING *pstr;
0f113f3e MC	29	X509_ALGOR *palg;
	30	ASN1_INTEGER *public_key = NULL;
	31
	32	DSA *dsa = NULL;
	33
	34	if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
	35	return 0;
	36	X509_ALGOR_get0(NULL, &ptype, &pval, palg);
	37
	38	if (ptype == V_ASN1_SEQUENCE) {
	39	pstr = pval;
	40	pm = pstr->data;
	41	pmlen = pstr->length;
	42
75ebbd9a	43	if ((dsa = d2i_DSAparams(NULL, &pm, pmlen)) == NULL) {
0f113f3e MC	44	DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
	45	goto err;
	46	}
	47
	48	} else if ((ptype == V_ASN1_NULL) \|\| (ptype == V_ASN1_UNDEF)) {
75ebbd9a	49	if ((dsa = DSA_new()) == NULL) {
0f113f3e MC	50	DSAerr(DSA_F_DSA_PUB_DECODE, ERR_R_MALLOC_FAILURE);
	51	goto err;
	52	}
	53	} else {
	54	DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_PARAMETER_ENCODING_ERROR);
	55	goto err;
	56	}
	57
75ebbd9a	58	if ((public_key = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL) {
0f113f3e MC	59	DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
	60	goto err;
	61	}
	62
75ebbd9a	63	if ((dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL)) == NULL) {
0f113f3e MC	64	DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_BN_DECODE_ERROR);
	65	goto err;
	66	}
	67
4889dadc	68	dsa->dirty_cnt++;
0f113f3e MC	69	ASN1_INTEGER_free(public_key);
	70	EVP_PKEY_assign_DSA(pkey, dsa);
	71	return 1;
	72
	73	err:
2ace7450	74	ASN1_INTEGER_free(public_key);
d6407083	75	DSA_free(dsa);
0f113f3e MC	76	return 0;
	77
	78	}
448be743	79
6f81892e	80	static int dsa_pub_encode(X509_PUBKEY pk, const EVP_PKEY pkey)
0f113f3e MC	81	{
0f113f3e MC	82	DSA *dsa;
0f113f3e MC	83	int ptype;
	84	unsigned char *penc = NULL;
	85	int penclen;
0c7ca403	86	ASN1_STRING *str = NULL;
ea6b07b5	87	ASN1_INTEGER *pubint = NULL;
7760384b	88	ASN1_OBJECT *aobj;
0f113f3e MC	89
	90	dsa = pkey->pkey.dsa;
	91	if (pkey->save_parameters && dsa->p && dsa->q && dsa->g) {
0f113f3e	92	str = ASN1_STRING_new();
90945fa3	93	if (str == NULL) {
0c7ca403 MC	94	DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
	95	goto err;
	96	}
0f113f3e MC	97	str->length = i2d_DSAparams(dsa, &str->data);
	98	if (str->length <= 0) {
	99	DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
	100	goto err;
	101	}
0f113f3e MC	102	ptype = V_ASN1_SEQUENCE;
	103	} else
	104	ptype = V_ASN1_UNDEF;
	105
ea6b07b5	106	pubint = BN_to_ASN1_INTEGER(dsa->pub_key, NULL);
0f113f3e	107
ea6b07b5 DSH	108	if (pubint == NULL) {
	109	DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
	110	goto err;
	111	}
	112
	113	penclen = i2d_ASN1_INTEGER(pubint, &penc);
	114	ASN1_INTEGER_free(pubint);
0f113f3e MC	115
	116	if (penclen <= 0) {
	117	DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
	118	goto err;
	119	}
	120
7760384b PK	121	aobj = OBJ_nid2obj(EVP_PKEY_DSA);
	122	if (aobj == NULL)
	123	goto err;
	124
	125	if (X509_PUBKEY_set0_param(pk, aobj, ptype, str, penc, penclen))
0f113f3e MC	126	return 1;
	127
	128	err:
b548a1f1	129	OPENSSL_free(penc);
0dfb9398	130	ASN1_STRING_free(str);
0f113f3e MC	131
	132	return 0;
	133	}
	134
	135	/*
	136	* In PKCS#8 DSA: you just get a private key integer and parameters in the
448be743 DSH	137	* AlgorithmIdentifier the pubkey must be recalculated.
448be743 DSH	138	*/
0f113f3e	139
245c6bc3	140	static int dsa_priv_decode(EVP_PKEY pkey, const PKCS8_PRIV_KEY_INFO p8)
0f113f3e	141	{
dfb10af9	142	const unsigned char p, pm;
0f113f3e MC	143	int pklen, pmlen;
0f113f3e MC	144	int ptype;
ac4e2577 DSH	145	const void *pval;
ac4e2577 DSH	146	const ASN1_STRING *pstr;
245c6bc3	147	const X509_ALGOR *palg;
0f113f3e MC	148	ASN1_INTEGER *privkey = NULL;
	149	BN_CTX *ctx = NULL;
	150
0f113f3e MC	151	DSA *dsa = NULL;
0f113f3e MC	152
ab4a81f6 DSH	153	int ret = 0;
ab4a81f6 DSH	154
0f113f3e MC	155	if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
	156	return 0;
	157	X509_ALGOR_get0(NULL, &ptype, &pval, palg);
	158
ab4a81f6 DSH	159	if ((privkey = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL)
ab4a81f6 DSH	160	goto decerr;
dfb10af9	161	if (privkey->type == V_ASN1_NEG_INTEGER \|\| ptype != V_ASN1_SEQUENCE)
ab4a81f6	162	goto decerr;
0f113f3e MC	163
	164	pstr = pval;
	165	pm = pstr->data;
	166	pmlen = pstr->length;
75ebbd9a	167	if ((dsa = d2i_DSAparams(NULL, &pm, pmlen)) == NULL)
0f113f3e MC	168	goto decerr;
0f113f3e MC	169	/* We have parameters now set private key */
74924dcb RS	170	if ((dsa->priv_key = BN_secure_new()) == NULL
74924dcb RS	171	\|\| !ASN1_INTEGER_to_BN(privkey, dsa->priv_key)) {
0f113f3e MC	172	DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR);
	173	goto dsaerr;
	174	}
	175	/* Calculate public key */
75ebbd9a	176	if ((dsa->pub_key = BN_new()) == NULL) {
0f113f3e MC	177	DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
	178	goto dsaerr;
	179	}
75ebbd9a	180	if ((ctx = BN_CTX_new()) == NULL) {
0f113f3e MC	181	DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
	182	goto dsaerr;
	183	}
	184
6364475a	185	BN_set_flags(dsa->priv_key, BN_FLG_CONSTTIME);
0f113f3e MC	186	if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) {
	187	DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR);
	188	goto dsaerr;
	189	}
	190
4889dadc	191	dsa->dirty_cnt++;
0f113f3e	192	EVP_PKEY_assign_DSA(pkey, dsa);
0f113f3e	193
ab4a81f6 DSH	194	ret = 1;
ab4a81f6 DSH	195	goto done;
0f113f3e MC	196
0f113f3e MC	197	decerr:
f6fb7f18	198	DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_DECODE_ERROR);
0f113f3e	199	dsaerr:
ab4a81f6 DSH	200	DSA_free(dsa);
ab4a81f6 DSH	201	done:
0f113f3e	202	BN_CTX_free(ctx);
2ace7450	203	ASN1_STRING_clear_free(privkey);
ab4a81f6	204	return ret;
0f113f3e	205	}
448be743	206
6f81892e	207	static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO p8, const EVP_PKEY pkey)
448be743	208	{
0f113f3e MC	209	ASN1_STRING *params = NULL;
	210	ASN1_INTEGER *prkey = NULL;
	211	unsigned char *dp = NULL;
	212	int dplen;
	213
	214	if (!pkey->pkey.dsa \|\| !pkey->pkey.dsa->priv_key) {
	215	DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_MISSING_PARAMETERS);
	216	goto err;
	217	}
	218
	219	params = ASN1_STRING_new();
	220
90945fa3	221	if (params == NULL) {
0f113f3e MC	222	DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
	223	goto err;
	224	}
	225
	226	params->length = i2d_DSAparams(pkey->pkey.dsa, &params->data);
	227	if (params->length <= 0) {
	228	DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
	229	goto err;
	230	}
	231	params->type = V_ASN1_SEQUENCE;
	232
	233	/* Get private key into integer */
	234	prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL);
	235
	236	if (!prkey) {
	237	DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_BN_ERROR);
	238	goto err;
	239	}
	240
	241	dplen = i2d_ASN1_INTEGER(prkey, &dp);
	242
a8ae0891	243	ASN1_STRING_clear_free(prkey);
fa4629b6	244	prkey = NULL;
0f113f3e MC	245
	246	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0,
	247	V_ASN1_SEQUENCE, params, dp, dplen))
	248	goto err;
	249
	250	return 1;
	251
	252	err:
b548a1f1	253	OPENSSL_free(dp);
0dfb9398	254	ASN1_STRING_free(params);
2ace7450	255	ASN1_STRING_clear_free(prkey);
0f113f3e	256	return 0;
448be743 DSH	257	}
448be743 DSH	258
6f81892e	259	static int int_dsa_size(const EVP_PKEY *pkey)
0f113f3e	260	{
26a7d938	261	return DSA_size(pkey->pkey.dsa);
0f113f3e	262	}
6f81892e DSH	263
6f81892e DSH	264	static int dsa_bits(const EVP_PKEY *pkey)
0f113f3e	265	{
5d8d9a8e	266	return DSA_bits(pkey->pkey.dsa);
0f113f3e	267	}
6f81892e	268
2514fa79	269	static int dsa_security_bits(const EVP_PKEY *pkey)
0f113f3e MC	270	{
	271	return DSA_security_bits(pkey->pkey.dsa);
	272	}
2514fa79	273
6f81892e	274	static int dsa_missing_parameters(const EVP_PKEY *pkey)
0f113f3e MC	275	{
	276	DSA *dsa;
	277	dsa = pkey->pkey.dsa;
f72f00d4	278	if (dsa == NULL \|\| dsa->p == NULL \|\| dsa->q == NULL \|\| dsa->g == NULL)
0f113f3e MC	279	return 1;
	280	return 0;
	281	}
6f81892e DSH	282
6f81892e DSH	283	static int dsa_copy_parameters(EVP_PKEY to, const EVP_PKEY from)
0f113f3e MC	284	{
	285	BIGNUM *a;
	286
2986ecdc DSH	287	if (to->pkey.dsa == NULL) {
	288	to->pkey.dsa = DSA_new();
	289	if (to->pkey.dsa == NULL)
	290	return 0;
	291	}
	292
0f113f3e MC	293	if ((a = BN_dup(from->pkey.dsa->p)) == NULL)
0f113f3e MC	294	return 0;
23a1d5e9	295	BN_free(to->pkey.dsa->p);
0f113f3e MC	296	to->pkey.dsa->p = a;
	297
	298	if ((a = BN_dup(from->pkey.dsa->q)) == NULL)
	299	return 0;
23a1d5e9	300	BN_free(to->pkey.dsa->q);
0f113f3e MC	301	to->pkey.dsa->q = a;
	302
	303	if ((a = BN_dup(from->pkey.dsa->g)) == NULL)
	304	return 0;
23a1d5e9	305	BN_free(to->pkey.dsa->g);
0f113f3e	306	to->pkey.dsa->g = a;
4889dadc	307	to->pkey.dsa->dirty_cnt++;
0f113f3e MC	308	return 1;
0f113f3e MC	309	}
6f81892e DSH	310
6f81892e DSH	311	static int dsa_cmp_parameters(const EVP_PKEY a, const EVP_PKEY b)
0f113f3e MC	312	{
	313	if (BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) \|\|
	314	BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) \|\|
	315	BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g))
	316	return 0;
	317	else
	318	return 1;
	319	}
6f81892e	320
0cb8499b	321	static int dsa_pub_cmp(const EVP_PKEY a, const EVP_PKEY b)
0f113f3e MC	322	{
	323	if (BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) != 0)
	324	return 0;
	325	else
	326	return 1;
	327	}
0cb8499b	328
6f81892e	329	static void int_dsa_free(EVP_PKEY *pkey)
0f113f3e MC	330	{
	331	DSA_free(pkey->pkey.dsa);
	332	}
6f81892e	333
777c47ac	334	static int do_dsa_print(BIO bp, const DSA x, int off, int ptype)
0f113f3e	335	{
0f113f3e	336	int ret = 0;
0f113f3e	337	const char *ktype = NULL;
0f113f3e MC	338	const BIGNUM priv_key, pub_key;
	339
	340	if (ptype == 2)
	341	priv_key = x->priv_key;
	342	else
	343	priv_key = NULL;
	344
	345	if (ptype > 0)
	346	pub_key = x->pub_key;
	347	else
	348	pub_key = NULL;
	349
	350	if (ptype == 2)
	351	ktype = "Private-Key";
	352	else if (ptype == 1)
	353	ktype = "Public-Key";
	354	else
	355	ktype = "DSA-Parameters";
	356
0f113f3e MC	357	if (priv_key) {
	358	if (!BIO_indent(bp, off, 128))
	359	goto err;
	360	if (BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p))
	361	<= 0)
	362	goto err;
	363	}
	364
a773b52a	365	if (!ASN1_bn_print(bp, "priv:", priv_key, NULL, off))
0f113f3e	366	goto err;
a773b52a	367	if (!ASN1_bn_print(bp, "pub: ", pub_key, NULL, off))
0f113f3e	368	goto err;
a773b52a	369	if (!ASN1_bn_print(bp, "P: ", x->p, NULL, off))
0f113f3e	370	goto err;
a773b52a	371	if (!ASN1_bn_print(bp, "Q: ", x->q, NULL, off))
0f113f3e	372	goto err;
a773b52a	373	if (!ASN1_bn_print(bp, "G: ", x->g, NULL, off))
0f113f3e MC	374	goto err;
	375	ret = 1;
	376	err:
26a7d938	377	return ret;
0f113f3e	378	}
35208f36	379
3e4585c8	380	static int dsa_param_decode(EVP_PKEY *pkey,
0f113f3e MC	381	const unsigned char **pder, int derlen)
	382	{
	383	DSA *dsa;
75ebbd9a RS	384
75ebbd9a RS	385	if ((dsa = d2i_DSAparams(NULL, pder, derlen)) == NULL) {
0f113f3e MC	386	DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB);
	387	return 0;
	388	}
4889dadc	389	dsa->dirty_cnt++;
0f113f3e MC	390	EVP_PKEY_assign_DSA(pkey, dsa);
	391	return 1;
	392	}
3e4585c8 DSH	393
3e4585c8 DSH	394	static int dsa_param_encode(const EVP_PKEY pkey, unsigned char *pder)
0f113f3e MC	395	{
	396	return i2d_DSAparams(pkey->pkey.dsa, pder);
	397	}
35208f36 DSH	398
35208f36 DSH	399	static int dsa_param_print(BIO bp, const EVP_PKEY pkey, int indent,
0f113f3e MC	400	ASN1_PCTX *ctx)
	401	{
	402	return do_dsa_print(bp, pkey->pkey.dsa, indent, 0);
	403	}
35208f36 DSH	404
35208f36 DSH	405	static int dsa_pub_print(BIO bp, const EVP_PKEY pkey, int indent,
0f113f3e MC	406	ASN1_PCTX *ctx)
	407	{
	408	return do_dsa_print(bp, pkey->pkey.dsa, indent, 1);
	409	}
35208f36 DSH	410
35208f36 DSH	411	static int dsa_priv_print(BIO bp, const EVP_PKEY pkey, int indent,
0f113f3e MC	412	ASN1_PCTX *ctx)
	413	{
	414	return do_dsa_print(bp, pkey->pkey.dsa, indent, 2);
	415	}
35208f36	416
e4263314	417	static int old_dsa_priv_decode(EVP_PKEY *pkey,
0f113f3e MC	418	const unsigned char **pder, int derlen)
	419	{
	420	DSA *dsa;
75ebbd9a RS	421
75ebbd9a RS	422	if ((dsa = d2i_DSAPrivateKey(NULL, pder, derlen)) == NULL) {
0f113f3e MC	423	DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB);
	424	return 0;
	425	}
4889dadc	426	dsa->dirty_cnt++;
0f113f3e MC	427	EVP_PKEY_assign_DSA(pkey, dsa);
	428	return 1;
	429	}
e4263314 DSH	430
e4263314 DSH	431	static int old_dsa_priv_encode(const EVP_PKEY pkey, unsigned char *pder)
0f113f3e MC	432	{
	433	return i2d_DSAPrivateKey(pkey->pkey.dsa, pder);
	434	}
e4263314	435
fa1ba589	436	static int dsa_sig_print(BIO bp, const X509_ALGOR sigalg,
0f113f3e MC	437	const ASN1_STRING sig, int indent, ASN1_PCTX pctx)
	438	{
	439	DSA_SIG *dsa_sig;
	440	const unsigned char *p;
a773b52a	441
0f113f3e MC	442	if (!sig) {
	443	if (BIO_puts(bp, "\n") <= 0)
	444	return 0;
	445	else
	446	return 1;
	447	}
	448	p = sig->data;
	449	dsa_sig = d2i_DSA_SIG(NULL, &p, sig->length);
	450	if (dsa_sig) {
	451	int rv = 0;
9267c11b	452	const BIGNUM r, s;
706a13f1	453
9267c11b	454	DSA_SIG_get0(dsa_sig, &r, &s);
0f113f3e MC	455
	456	if (BIO_write(bp, "\n", 1) != 1)
	457	goto err;
	458
706a13f1	459	if (!ASN1_bn_print(bp, "r: ", r, NULL, indent))
0f113f3e	460	goto err;
706a13f1	461	if (!ASN1_bn_print(bp, "s: ", s, NULL, indent))
0f113f3e MC	462	goto err;
	463	rv = 1;
	464	err:
0f113f3e MC	465	DSA_SIG_free(dsa_sig);
	466	return rv;
	467	}
a4c467c9 DO	468	if (BIO_puts(bp, "\n") <= 0)
a4c467c9 DO	469	return 0;
0f113f3e MC	470	return X509_signature_dump(bp, sig, indent);
0f113f3e MC	471	}
fa1ba589	472
492a9e24	473	static int dsa_pkey_ctrl(EVP_PKEY pkey, int op, long arg1, void arg2)
0f113f3e MC	474	{
	475	switch (op) {
	476	case ASN1_PKEY_CTRL_PKCS7_SIGN:
	477	if (arg1 == 0) {
	478	int snid, hnid;
	479	X509_ALGOR alg1, alg2;
	480	PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
	481	if (alg1 == NULL \|\| alg1->algorithm == NULL)
	482	return -1;
	483	hnid = OBJ_obj2nid(alg1->algorithm);
	484	if (hnid == NID_undef)
	485	return -1;
	486	if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
	487	return -1;
	488	X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
	489	}
	490	return 1;
8931b30d	491	#ifndef OPENSSL_NO_CMS
0f113f3e MC	492	case ASN1_PKEY_CTRL_CMS_SIGN:
	493	if (arg1 == 0) {
	494	int snid, hnid;
	495	X509_ALGOR alg1, alg2;
	496	CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
	497	if (alg1 == NULL \|\| alg1->algorithm == NULL)
	498	return -1;
	499	hnid = OBJ_obj2nid(alg1->algorithm);
	500	if (hnid == NID_undef)
	501	return -1;
	502	if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
	503	return -1;
	504	X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
	505	}
	506	return 1;
	507
	508	case ASN1_PKEY_CTRL_CMS_RI_TYPE:
	509	(int )arg2 = CMS_RECIPINFO_NONE;
	510	return 1;
8931b30d	511	#endif
492a9e24	512
0f113f3e MC	513	case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
0f113f3e MC	514	(int )arg2 = NID_sha256;
cd4c83b5	515	return 1;
03919683	516
0f113f3e MC	517	default:
0f113f3e MC	518	return -2;
492a9e24	519
0f113f3e	520	}
492a9e24	521
0f113f3e	522	}
492a9e24	523
4889dadc MC	524	static size_t dsa_pkey_dirty_cnt(const EVP_PKEY *pkey)
	525	{
	526	return pkey->pkey.dsa->dirty_cnt;
	527	}
	528
	529	static void dsa_pkey_export_to(const EVP_PKEY pk, EVP_KEYMGMT *keymgmt)
	530	{
	531	DSA *dsa = pk->pkey.dsa;
	532	OSSL_PARAM_BLD tmpl;
	533	const BIGNUM p = DSA_get0_p(dsa), g = DSA_get0_g(dsa);
	534	const BIGNUM q = DSA_get0_q(dsa), pub_key = DSA_get0_pub_key(dsa);
	535	const BIGNUM *priv_key = DSA_get0_priv_key(dsa);
	536	OSSL_PARAM *params;
	537	void *provkey = NULL;
	538
	539	if (p == NULL \|\| q == NULL \|\| g == NULL)
	540	return NULL;
	541
	542	ossl_param_bld_init(&tmpl);
	543	if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_FFC_P, p)
	544	\|\| !ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_FFC_Q, q)
	545	\|\| !ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_FFC_G, g))
	546	return NULL;
	547
	548	/*
	549	* This may be used to pass domain parameters only without any key data -
	550	* so "pub_key" is optional. We can never have a "priv_key" without a
	551	* corresponding "pub_key" though.
	552	*/
	553	if (pub_key != NULL) {
	554	if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_DSA_PUB_KEY,
	555	pub_key))
	556	return NULL;
	557
	558	if (priv_key != NULL) {
	559	if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_DSA_PRIV_KEY,
	560	priv_key))
	561	return NULL;
	562	}
	563	}
	564
	565	params = ossl_param_bld_to_param(&tmpl);
	566
	567	/* We export, the provider imports */
	568	provkey = evp_keymgmt_importkey(keymgmt, params);
	569
	570	ossl_param_bld_free(params);
	571	return provkey;
	572	}
	573
448be743 DSH	574	/* NB these are sorted in pkey_id order, lowest first */
448be743 DSH	575
578b5514	576	const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[5] = {
0f113f3e MC	577
	578	{
	579	EVP_PKEY_DSA2,
	580	EVP_PKEY_DSA,
	581	ASN1_PKEY_ALIAS},
	582
	583	{
	584	EVP_PKEY_DSA1,
	585	EVP_PKEY_DSA,
	586	ASN1_PKEY_ALIAS},
	587
	588	{
	589	EVP_PKEY_DSA4,
	590	EVP_PKEY_DSA,
	591	ASN1_PKEY_ALIAS},
	592
	593	{
	594	EVP_PKEY_DSA3,
	595	EVP_PKEY_DSA,
	596	ASN1_PKEY_ALIAS},
	597
	598	{
	599	EVP_PKEY_DSA,
	600	EVP_PKEY_DSA,
	601	0,
	602
	603	"DSA",
	604	"OpenSSL DSA method",
	605
	606	dsa_pub_decode,
	607	dsa_pub_encode,
	608	dsa_pub_cmp,
	609	dsa_pub_print,
	610
	611	dsa_priv_decode,
	612	dsa_priv_encode,
	613	dsa_priv_print,
	614
	615	int_dsa_size,
	616	dsa_bits,
	617	dsa_security_bits,
	618
	619	dsa_param_decode,
	620	dsa_param_encode,
	621	dsa_missing_parameters,
	622	dsa_copy_parameters,
	623	dsa_cmp_parameters,
	624	dsa_param_print,
	625	dsa_sig_print,
	626
	627	int_dsa_free,
	628	dsa_pkey_ctrl,
	629	old_dsa_priv_decode,
4889dadc MC	630	old_dsa_priv_encode,
	631
	632	NULL, NULL, NULL,
	633	NULL, NULL, NULL,
	634	NULL, NULL, NULL, NULL,
	635
	636	dsa_pkey_dirty_cnt,
	637	dsa_pkey_export_to
	638	}
0f113f3e	639	};