]> WPIA git - cassiopeia.git/blobdiff - lib/openssl/crypto/dsa/dsa_ameth.c
add: execute openssl fetcher to fetch openssl 1.0.1j
[cassiopeia.git] / lib / openssl / crypto / dsa / dsa_ameth.c
diff --git a/lib/openssl/crypto/dsa/dsa_ameth.c b/lib/openssl/crypto/dsa/dsa_ameth.c
new file mode 100644 (file)
index 0000000..5af76ea
--- /dev/null
@@ -0,0 +1,709 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/x509.h>
+#include <openssl/asn1.h>
+#include <openssl/dsa.h>
+#include <openssl/bn.h>
+#ifndef OPENSSL_NO_CMS
+#include <openssl/cms.h>
+#endif
+#include "asn1_locl.h"
+
+static int dsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
+       {
+       const unsigned char *p, *pm;
+       int pklen, pmlen;
+       int ptype;
+       void *pval;
+       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)))
+                       {
+                       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()))
+                       {
+                       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)))
+               {
+               DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR);
+               goto err;
+               }
+
+       if (!(dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL)))
+               {
+               DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_BN_DECODE_ERROR);
+               goto err;
+               }
+
+       ASN1_INTEGER_free(public_key);
+       EVP_PKEY_assign_DSA(pkey, dsa);
+       return 1;
+
+       err:
+       if (public_key)
+               ASN1_INTEGER_free(public_key);
+       if (dsa)
+               DSA_free(dsa);
+       return 0;
+
+       }
+
+static int dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
+       {
+       DSA *dsa;
+       void *pval = NULL;
+       int ptype;
+       unsigned char *penc = NULL;
+       int penclen;
+
+       dsa=pkey->pkey.dsa;
+       if (pkey->save_parameters && dsa->p && dsa->q && dsa->g)
+               {
+               ASN1_STRING *str;
+               str = ASN1_STRING_new();
+               str->length = i2d_DSAparams(dsa, &str->data);
+               if (str->length <= 0)
+                       {
+                       DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
+                       goto err;
+                       }
+               pval = str;
+               ptype = V_ASN1_SEQUENCE;
+               }
+       else
+               ptype = V_ASN1_UNDEF;
+
+       dsa->write_params=0;
+
+       penclen = i2d_DSAPublicKey(dsa, &penc);
+
+       if (penclen <= 0)
+               {
+               DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE);
+               goto err;
+               }
+
+       if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DSA),
+                               ptype, pval, penc, penclen))
+               return 1;
+
+       err:
+       if (penc)
+               OPENSSL_free(penc);
+       if (pval)
+               ASN1_STRING_free(pval);
+
+       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, PKCS8_PRIV_KEY_INFO *p8)
+       {
+       const unsigned char *p, *pm;
+       int pklen, pmlen;
+       int ptype;
+       void *pval;
+       ASN1_STRING *pstr;
+       X509_ALGOR *palg;
+       ASN1_INTEGER *privkey = NULL;
+       BN_CTX *ctx = NULL;
+
+       STACK_OF(ASN1_TYPE) *ndsa = NULL;
+       DSA *dsa = NULL;
+
+       if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
+               return 0;
+       X509_ALGOR_get0(NULL, &ptype, &pval, palg);
+
+       /* Check for broken DSA PKCS#8, UGH! */
+       if (*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED))
+               {
+               ASN1_TYPE *t1, *t2;
+               if(!(ndsa = d2i_ASN1_SEQUENCE_ANY(NULL, &p, pklen)))
+                       goto decerr;
+               if (sk_ASN1_TYPE_num(ndsa) != 2)
+                       goto decerr;
+               /* Handle Two broken types:
+                * SEQUENCE {parameters, priv_key}
+                * SEQUENCE {pub_key, priv_key}
+                */
+
+               t1 = sk_ASN1_TYPE_value(ndsa, 0);
+               t2 = sk_ASN1_TYPE_value(ndsa, 1);
+               if (t1->type == V_ASN1_SEQUENCE)
+                       {
+                       p8->broken = PKCS8_EMBEDDED_PARAM;
+                       pval = t1->value.ptr;
+                       }
+               else if (ptype == V_ASN1_SEQUENCE)
+                       p8->broken = PKCS8_NS_DB;
+               else
+                       goto decerr;
+
+               if (t2->type != V_ASN1_INTEGER)
+                       goto decerr;
+
+               privkey = t2->value.integer;
+               }
+       else
+               {
+               const unsigned char *q = p;
+               if (!(privkey=d2i_ASN1_INTEGER(NULL, &p, pklen)))
+                       goto decerr;
+               if (privkey->type == V_ASN1_NEG_INTEGER)
+                       {
+                       p8->broken = PKCS8_NEG_PRIVKEY;
+                       ASN1_INTEGER_free(privkey);
+                       if (!(privkey=d2i_ASN1_UINTEGER(NULL, &q, pklen)))
+                               goto decerr;
+                       }
+               if (ptype != V_ASN1_SEQUENCE)
+                       goto decerr;
+               }
+
+       pstr = pval;    
+       pm = pstr->data;
+       pmlen = pstr->length;
+       if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen)))
+               goto decerr;
+       /* We have parameters now set private key */
+       if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL)))
+               {
+               DSAerr(DSA_F_DSA_PRIV_DECODE,DSA_R_BN_ERROR);
+               goto dsaerr;
+               }
+       /* Calculate public key */
+       if (!(dsa->pub_key = BN_new()))
+               {
+               DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
+               goto dsaerr;
+               }
+       if (!(ctx = BN_CTX_new()))
+               {
+               DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE);
+               goto dsaerr;
+               }
+                       
+       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;
+               }
+
+       EVP_PKEY_assign_DSA(pkey, dsa);
+       BN_CTX_free (ctx);
+       if(ndsa)
+               sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
+       else
+               ASN1_INTEGER_free(privkey);
+
+       return 1;
+
+       decerr:
+       DSAerr(DSA_F_DSA_PRIV_DECODE, EVP_R_DECODE_ERROR);
+       dsaerr:
+       BN_CTX_free (ctx);
+       if (privkey)
+               ASN1_INTEGER_free(privkey);
+       sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free);
+       DSA_free(dsa);
+       return 0;
+       }
+
+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)
+               {
+               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_INTEGER_free(prkey);
+
+       if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0,
+                               V_ASN1_SEQUENCE, params, dp, dplen))
+               goto err;
+
+       return 1;
+
+err:
+       if (dp != NULL)
+               OPENSSL_free(dp);
+       if (params != NULL)
+               ASN1_STRING_free(params);
+       if (prkey != NULL)
+               ASN1_INTEGER_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 BN_num_bits(pkey->pkey.dsa->p);
+       }
+
+static int dsa_missing_parameters(const EVP_PKEY *pkey)
+       {
+       DSA *dsa;
+       dsa=pkey->pkey.dsa;
+       if ((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 ((a=BN_dup(from->pkey.dsa->p)) == NULL)
+               return 0;
+       if (to->pkey.dsa->p != NULL)
+               BN_free(to->pkey.dsa->p);
+       to->pkey.dsa->p=a;
+
+       if ((a=BN_dup(from->pkey.dsa->q)) == NULL)
+               return 0;
+       if (to->pkey.dsa->q != NULL)
+               BN_free(to->pkey.dsa->q);
+       to->pkey.dsa->q=a;
+
+       if ((a=BN_dup(from->pkey.dsa->g)) == NULL)
+               return 0;
+       if (to->pkey.dsa->g != NULL)
+               BN_free(to->pkey.dsa->g);
+       to->pkey.dsa->g=a;
+       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 void update_buflen(const BIGNUM *b, size_t *pbuflen)
+       {
+       size_t i;
+       if (!b)
+               return;
+       if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
+                       *pbuflen = i;
+       }
+
+static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype)
+       {
+       unsigned char *m=NULL;
+       int ret=0;
+       size_t buf_len=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";
+
+       update_buflen(x->p, &buf_len);
+       update_buflen(x->q, &buf_len);
+       update_buflen(x->g, &buf_len);
+       update_buflen(priv_key, &buf_len);
+       update_buflen(pub_key, &buf_len);
+
+       m=(unsigned char *)OPENSSL_malloc(buf_len+10);
+       if (m == NULL)
+               {
+               DSAerr(DSA_F_DO_DSA_PRINT,ERR_R_MALLOC_FAILURE);
+               goto err;
+               }
+
+       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,m,off))
+               goto err;
+       if (!ASN1_bn_print(bp,"pub: ",pub_key,m,off))
+               goto err;
+       if (!ASN1_bn_print(bp,"P:   ",x->p,m,off)) goto err;
+       if (!ASN1_bn_print(bp,"Q:   ",x->q,m,off)) goto err;
+       if (!ASN1_bn_print(bp,"G:   ",x->g,m,off)) goto err;
+       ret=1;
+err:
+       if (m != NULL) OPENSSL_free(m);
+       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)))
+               {
+               DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB);
+               return 0;
+               }
+       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)))
+               {
+               DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB);
+               return 0;
+               }
+       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;
+               size_t buf_len = 0;
+               unsigned char *m=NULL;
+               update_buflen(dsa_sig->r, &buf_len);
+               update_buflen(dsa_sig->s, &buf_len);
+               m = OPENSSL_malloc(buf_len+10);
+               if (m == NULL)
+                       {
+                       DSAerr(DSA_F_DSA_SIG_PRINT,ERR_R_MALLOC_FAILURE);
+                       goto err;
+                       }
+
+               if (BIO_write(bp, "\n", 1) != 1)
+                       goto err;
+
+               if (!ASN1_bn_print(bp,"r:   ",dsa_sig->r,m,indent))
+                       goto err;
+               if (!ASN1_bn_print(bp,"s:   ",dsa_sig->s,m,indent))
+                       goto err;
+               rv = 1;
+               err:
+               if (m)
+                       OPENSSL_free(m);
+               DSA_SIG_free(dsa_sig);
+               return rv;
+               }
+       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;
+#endif
+
+               case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
+               *(int *)arg2 = NID_sha1;
+               return 2;
+
+               default:
+               return -2;
+
+               }
+
+       }
+
+/* NB these are sorted in pkey_id order, lowest first */
+
+const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] = 
+       {
+
+               {
+               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_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
+               }
+       };