Implement handling of EC parameter seeds (new functions
authorBodo Möller <bodo@openssl.org>
Tue, 18 Jun 2002 08:38:59 +0000 (08:38 +0000)
committerBodo Möller <bodo@openssl.org>
Tue, 18 Jun 2002 08:38:59 +0000 (08:38 +0000)
EC_GROUP_set_seed(), EC_GROUP_get0_seed(), EC_GROUP_get_seed_len()).

New functions ECPKParameters_print(), ECPKParameters_print_fp().

Submitted by: Nils Larsch

CHANGES
crypto/asn1/t_pkey.c
crypto/ec/ec.h
crypto/ec/ec_err.c
crypto/ec/ec_lcl.h
crypto/ec/ec_lib.c
crypto/ecdsa/ecs_lib.c

diff --git a/CHANGES b/CHANGES
index 869ee64..44a1ba5 100644 (file)
--- a/CHANGES
+++ b/CHANGES
      These control ASN1 encoding details:
      - Curves (i.e., groups) are encoded explicitly unless asn1_flag
        has been set to OPENSSL_EC_NAMED_CURVE.
-     - Points are encoded in compressed form by default; options for
+     - Points are encoded in uncompressed form by default; options for
        asn1_for are as for point2oct, namely
           POINT_CONVERSION_COMPRESSED
           POINT_CONVERSION_UNCOMPRESSED
           POINT_CONVERSION_HYBRID
+
+     Also add 'seed' and 'seed_len' members to EC_GROUP with access
+     functions
+          EC_GROUP_set_seed()
+          EC_GROUP_get0_seed()
+          EC_GROUP_get_seed_len()
+     This is used only for ASN1 purposes (so far).
      [Nils Larsch <nla@trustcenter.de>]
 
   *) Add 'field_type' member to EC_METHOD, which holds the NID
index 4841444..c456b67 100644 (file)
@@ -58,6 +58,7 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
+#include <openssl/objects.h>
 #include <openssl/buffer.h>
 #include <openssl/bn.h>
 #ifndef OPENSSL_NO_RSA
@@ -212,6 +213,205 @@ err:
        }
 #endif /* !OPENSSL_NO_DSA */
 
+#ifndef OPENSSL_NO_EC
+#ifndef OPENSSL_NO_FP_API
+int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
+       {
+       BIO *b;
+       int ret;
+
+       if ((b=BIO_new(BIO_s_file())) == NULL)
+               {
+               ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);
+               return(0);
+               }
+       BIO_set_fp(b, fp, BIO_NOCLOSE);
+       ret = ECPKParameters_print(b, x, off);
+       BIO_free(b);
+       return(ret);
+       }
+#endif
+
+int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
+       {
+       char str[128];
+       unsigned char *buffer=NULL;
+       size_t  buf_len=0, i;
+       int     ret=0, reason=ERR_R_BIO_LIB;
+       BN_CTX  *ctx=NULL;
+       EC_POINT *point=NULL;
+       BIGNUM  *p=NULL, *a=NULL, *b=NULL, *gen=NULL,
+               *order=NULL, *cofactor=NULL, *seed=NULL;
+       
+       static const char *gen_compressed = "Generator (compressed):";
+       static const char *gen_uncompressed = "Generator (uncompressed):";
+       static const char *gen_hybrid = "Generator (hybrid):";
+       if (!x)
+               {
+               reason = ERR_R_PASSED_NULL_PARAMETER;
+               goto err;
+               }
+
+       if (EC_GROUP_get_asn1_flag(x))
+               {
+               /* the curve parameter are given by an asn1 OID */
+               int nid;
+
+               if (off)
+                       {
+                       if (off > 128)
+                               off=128;
+                       memset(str, ' ', off);
+                       if (BIO_write(bp, str, off) <= 0)
+                               goto err;
+                       }
+
+               nid = EC_GROUP_get_nid(x);
+               if (nid == 0)
+                       goto err;
+
+               if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
+                       goto err;
+               if (BIO_printf(bp, "\n") <= 0)
+                       goto err;
+               }
+       else
+               {
+               /* explicit parameters */
+               /* TODO */
+               point_conversion_form_t form;
+
+               if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
+                       (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
+                       (cofactor = BN_new()) == NULL)
+                       {
+                       reason = ERR_R_MALLOC_FAILURE;
+                       goto err;
+                       }
+
+               if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))
+                       {
+                       reason = ERR_R_EC_LIB;
+                       goto err;
+                       }
+
+               if ((point = EC_GROUP_get0_generator(x)) == NULL)
+                       {
+                       reason = ERR_R_EC_LIB;
+                       goto err;
+                       }
+               if (!EC_GROUP_get_order(x, order, NULL) || 
+                       !EC_GROUP_get_cofactor(x, cofactor, NULL))
+                       {
+                       reason = ERR_R_EC_LIB;
+                       goto err;
+                       }
+               
+               form = EC_GROUP_get_point_conversion_form(x);
+
+               if ((gen = EC_POINT_point2bn(x, point, 
+                               form, NULL, ctx)) == NULL)
+                       {
+                       reason = ERR_R_EC_LIB;
+                       goto err;
+                       }
+
+               buf_len = (size_t)BN_num_bytes(p);
+               if (buf_len < (i = (size_t)BN_num_bytes(a)))
+                       buf_len = i;
+               if (buf_len < (i = (size_t)BN_num_bytes(b)))
+                       buf_len = i;
+               if (buf_len < (i = (size_t)BN_num_bytes(gen)))
+                       buf_len = i;
+               if (buf_len < (i = (size_t)BN_num_bytes(order)))
+                       buf_len = i;
+               if (buf_len < (i = (size_t)BN_num_bytes(cofactor))) 
+                       buf_len = i;
+
+               if (EC_GROUP_get0_seed(x))
+                       {
+                       seed = BN_bin2bn(EC_GROUP_get0_seed(x),
+                               EC_GROUP_get_seed_len(x), NULL);
+                       if (seed == NULL)
+                               {
+                               reason = ERR_R_BN_LIB;
+                               goto err;
+                               }
+                       if (buf_len < (i = (size_t)BN_num_bytes(seed))) 
+                               buf_len = i;
+                       }
+
+               buf_len += 10;
+               if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
+                       {
+                       reason = ERR_R_MALLOC_FAILURE;
+                       goto err;
+                       }
+               if (off)
+                       {
+                       if (off > 128) off=128;
+                       memset(str,' ',off);
+                       }
+  
+               if ((p != NULL) && !print(bp, "P:   ", p, buffer, off)) 
+                       goto err;
+               if ((a != NULL) && !print(bp, "A:   ", a, buffer, off)) 
+                       goto err;
+               if ((b != NULL) && !print(bp, "B:   ", b, buffer, off))
+                       goto err;
+               if (form == POINT_CONVERSION_COMPRESSED)
+                       {
+                       if ((gen != NULL) && !print(bp, gen_compressed, gen,
+                               buffer, off))
+                               goto err;
+                       }
+               else if (form == POINT_CONVERSION_UNCOMPRESSED)
+                       {
+                       if ((gen != NULL) && !print(bp, gen_uncompressed, gen,
+                               buffer, off))
+                               goto err;
+                       }
+               else /* form == POINT_CONVERSION_HYBRID */
+                       {
+                       if ((gen != NULL) && !print(bp, gen_hybrid, gen,
+                               buffer, off))
+                               goto err;
+                       }
+               if ((order != NULL) && !print(bp, "Order: ", order, 
+                       buffer, off)) goto err;
+               if ((cofactor != NULL) && !print(bp, "Cofactor: ", cofactor, 
+                       buffer, off)) goto err;
+               if ((seed != NULL) && !print(bp, "Seed:", seed, 
+                       buffer, off)) goto err;
+               }
+       ret=1;
+err:
+       if (!ret)
+               ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
+       if (p) 
+               BN_free(p);
+       if (a) 
+               BN_free(a);
+       if (b)
+               BN_free(b);
+       if (gen)
+               BN_free(gen);
+       if (order)
+               BN_free(order);
+       if (cofactor)
+               BN_free(cofactor);
+       if (seed) 
+               BN_free(seed);
+       if (ctx)
+               BN_CTX_free(ctx);
+       if (buffer != NULL) 
+               OPENSSL_free(buffer);
+       return(ret);    
+       }
+#endif /* OPENSSL_NO_EC */
+
+
 #ifndef OPENSSL_NO_ECDSA
 #ifndef OPENSSL_NO_FP_API
 int ECDSA_print_fp(FILE *fp, const ECDSA *x, int off)
@@ -235,63 +435,31 @@ int ECDSA_print(BIO *bp, const ECDSA *x, int off)
        {
        char str[128];
        unsigned char *buffer=NULL;
-       int     i, buf_len=0, ret=0, reason=ERR_R_BIO_LIB;
-       BIGNUM  *tmp_1=NULL, *tmp_2=NULL, *tmp_3=NULL,
-               *tmp_4=NULL, *tmp_5=NULL, *tmp_6=NULL,
-               *tmp_7=NULL;
+       size_t  buf_len=0, i;
+       int     ret=0, reason=ERR_R_BIO_LIB;
+       BIGNUM  *pub_key=NULL;
        BN_CTX  *ctx=NULL;
-       EC_POINT *point=NULL;
  
-       /* TODO: fields other than prime fields */
-       
        if (!x || !x->group)
                {
-               reason = ECDSA_R_MISSING_PARAMETERS;
-               goto err;
-               }
-       if ((tmp_1 = BN_new()) == NULL || (tmp_2 = BN_new()) == NULL ||
-               (tmp_3 = BN_new()) == NULL || (ctx = BN_CTX_new()) == NULL ||
-               (tmp_6 = BN_new()) == NULL || (tmp_7 = BN_new()) == NULL)
-               {
-               reason = ERR_R_MALLOC_FAILURE;
-               goto err;
-               }
-       if (!EC_GROUP_get_curve_GFp(x->group, tmp_1, tmp_2, tmp_3, ctx))
-               {
-               reason = ERR_R_EC_LIB;
-               goto err;
-               }
-       if ((point = EC_GROUP_get0_generator(x->group)) == NULL)
-               {
-               reason = ERR_R_EC_LIB;
-               goto err;
-               }
-       if (!EC_GROUP_get_order(x->group, tmp_6, NULL) || 
-            !EC_GROUP_get_cofactor(x->group, tmp_7, NULL))
-               {
-               reason = ERR_R_EC_LIB;
+               reason = ERR_R_PASSED_NULL_PARAMETER;
                goto err;
                }
-       if ((tmp_4 = EC_POINT_point2bn(x->group, point, 
-               ECDSA_get_conversion_form(x), tmp_4, ctx)) == NULL)
+
+       if ((pub_key = EC_POINT_point2bn(x->group, x->pub_key,
+               ECDSA_get_conversion_form(x), NULL, ctx)) == NULL)
                {
                reason = ERR_R_EC_LIB;
                goto err;
                }
-       if ((tmp_5 = EC_POINT_point2bn(x->group, x->pub_key,
-               ECDSA_get_conversion_form(x), tmp_5, ctx)) == NULL)
+
+       buf_len = (size_t)BN_num_bytes(pub_key);
+       if (x->priv_key)
                {
-               reason = ERR_R_EC_LIB;
-               goto err;
+               if ((i = (size_t)BN_num_bytes(x->priv_key)) > buf_len)
+                       buf_len = i;
                }
 
-       buf_len = BN_num_bytes(tmp_1);
-       if (buf_len < (i = BN_num_bytes(tmp_2))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_3))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_4))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_5))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_6))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_7))) buf_len = i;
        buf_len += 10;
        if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
                {
@@ -306,30 +474,28 @@ int ECDSA_print(BIO *bp, const ECDSA *x, int off)
        if (x->priv_key != NULL)
                {
                if (off && (BIO_write(bp, str, off) <= 0)) goto err;
-               if (BIO_printf(bp, "Private-Key: (%d bit)\n", BN_num_bits(tmp_1)) <= 0) goto err;
+               if (BIO_printf(bp, "Private-Key: (%d bit)\n", 
+                       BN_num_bits(x->priv_key)) <= 0) goto err;
                }
   
-       if ((x->priv_key != NULL) && !print(bp, "priv:", x->priv_key, buffer, off)) goto err;
-       if ((tmp_5 != NULL) && !print(bp, "pub: ", tmp_5, buffer, off)) goto err;
-       if ((tmp_1 != NULL) && !print(bp, "P:   ", tmp_1, buffer, off)) goto err;
-       if ((tmp_2 != NULL) && !print(bp, "A:   ", tmp_2, buffer, off)) goto err;
-       if ((tmp_3 != NULL) && !print(bp, "B:   ", tmp_3, buffer, off)) goto err;
-       if ((tmp_4 != NULL) && !print(bp, "Gen: ", tmp_4, buffer, off)) goto err;
-       if ((tmp_6 != NULL) && !print(bp, "Order: ", tmp_6, buffer, off)) goto err;
-       if ((tmp_7 != NULL) && !print(bp, "Cofactor: ", tmp_7, buffer, off)) goto err;
+       if ((x->priv_key != NULL) && !print(bp, "priv:", x->priv_key, 
+               buffer, off))
+               goto err;
+       if ((pub_key != NULL) && !print(bp, "pub: ", pub_key,
+               buffer, off))
+               goto err;
+       if (!ECPKParameters_print(bp, x->group, off))
+               goto err;
        ret=1;
 err:
        if (!ret)
                ECDSAerr(ECDSA_F_ECDSA_PRINT, reason);
-       if (tmp_1) BN_free(tmp_1);
-       if (tmp_2) BN_free(tmp_2);
-       if (tmp_3) BN_free(tmp_3);
-       if (tmp_4) BN_free(tmp_4);
-       if (tmp_5) BN_free(tmp_5);
-       if (tmp_6) BN_free(tmp_6);
-       if (tmp_7) BN_free(tmp_7);
-       if (ctx)   BN_CTX_free(ctx);
-       if (buffer != NULL) OPENSSL_free(buffer);
+       if (pub_key) 
+               BN_free(pub_key);
+       if (ctx)
+               BN_CTX_free(ctx);
+       if (buffer != NULL)
+               OPENSSL_free(buffer);
        return(ret);
        }
 #endif
@@ -504,70 +670,37 @@ int ECDSAParameters_print_fp(FILE *fp, const ECDSA *x)
 #endif
 
 int ECDSAParameters_print(BIO *bp, const ECDSA *x)
-       {
-       unsigned char *buffer=NULL;
-       int     buf_len;
-       int     reason=ERR_R_EC_LIB, i, ret=0;
-       BIGNUM  *tmp_1=NULL, *tmp_2=NULL, *tmp_3=NULL, *tmp_4=NULL,
-               *tmp_5=NULL, *tmp_6=NULL;
-       BN_CTX  *ctx=NULL;
-       EC_POINT *point=NULL;
+       {
+       int     reason=ERR_R_EC_LIB, ret=0;
+       BIGNUM  *order=NULL;
  
-       /* TODO: fields other than prime fields */
-       if (!x || !x->group)
-       {
-               reason = ECDSA_R_MISSING_PARAMETERS;
+       if (!x || !x->group)
+               {
+               reason = ERR_R_PASSED_NULL_PARAMETER;;
                goto err;
-       }
-       if ((tmp_1 = BN_new()) == NULL || (tmp_2 = BN_new()) == NULL ||
-          (tmp_3 = BN_new()) == NULL || (tmp_5 = BN_new()) == NULL ||
-           (tmp_6 = BN_new()) == NULL || (ctx = BN_CTX_new()) == NULL)
-       {
+               }
+
+       if ((order = BN_new()) == NULL)
+               {
                reason = ERR_R_MALLOC_FAILURE;
                goto err;
-       }
-       if (!EC_GROUP_get_curve_GFp(x->group, tmp_1, tmp_2, tmp_3, ctx)) goto err;
-       if ((point = EC_GROUP_get0_generator(x->group)) == NULL) goto err;
-       if (!EC_GROUP_get_order(x->group, tmp_5, ctx)) goto err;
-       if (!EC_GROUP_get_cofactor(x->group, tmp_6, ctx)) goto err;     
+               }
 
-       if ((tmp_4 = EC_POINT_point2bn(x->group, point, 
-               ECDSA_get_conversion_form(x), NULL, ctx)) == NULL)
+       if (!EC_GROUP_get_order(x->group, order, NULL))
                {
                reason = ERR_R_EC_LIB;
                goto err;
                }
-
-       buf_len = BN_num_bytes(tmp_1);
-       if (buf_len < (i = BN_num_bytes(tmp_2))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_3))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_4))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_5))) buf_len = i;
-       if (buf_len < (i = BN_num_bytes(tmp_6))) buf_len = i;
-       buf_len += 10;
-       if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
-       {
-               reason=ERR_R_MALLOC_FAILURE;
-               goto err;
-       }
  
-       if (BIO_printf(bp, "ECDSA-Parameters: (%d bit)\n", BN_num_bits(tmp_1)) <= 0) goto err;
-       if (!print(bp, "Prime p:", tmp_1, buffer, 4)) goto err;
-       if (!print(bp, "Curve a:", tmp_2, buffer, 4)) goto err;
-       if (!print(bp, "Curve b:", tmp_3, buffer, 4)) goto err;
-       if (!print(bp, "Generator (compressed):", tmp_4, buffer, 4)) goto err; 
-       if (!print(bp, "Order:", tmp_5, buffer, 4)) goto err;
-       if (!print(bp, "Cofactor:", tmp_6, buffer, 4)) goto err;
+       if (BIO_printf(bp, "ECDSA-Parameters: (%d bit)\n", 
+               BN_num_bits(order)) <= 0)
+               goto err;
+       if (!ECPKParameters_print(bp, x->group, 4))
+               goto err;
        ret=1;
 err:
-       if (tmp_1)  BN_free(tmp_1);
-       if (tmp_2)  BN_free(tmp_2);
-       if (tmp_3)  BN_free(tmp_3);
-       if (tmp_4)  BN_free(tmp_4);
-       if (tmp_5)  BN_free(tmp_5);
-       if (tmp_6)  BN_free(tmp_6);
-       if (ctx)    BN_CTX_free(ctx);
-       if (buffer) OPENSSL_free(buffer);
+       if (order)
+               BN_free(order);
        ECDSAerr(ECDSA_F_ECDSAPARAMETERS_PRINT, reason);
        return(ret);
        }
index e3bae73..85883e2 100644 (file)
@@ -86,6 +86,7 @@ typedef struct ec_group_st
         -- curve coefficients
         -- optional generator with associated information (order, cofactor)
         -- optional extra data (TODO: precomputed table for fast computation of multiples of generator)
+        -- ASN1 stuff
        */
        EC_GROUP;
 
@@ -116,9 +117,18 @@ EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *);
 int EC_GROUP_get_order(const EC_GROUP *, BIGNUM *order, BN_CTX *);
 int EC_GROUP_get_cofactor(const EC_GROUP *, BIGNUM *cofactor, BN_CTX *);
 
-void EC_GROUP_set_nid(EC_GROUP *, int);
+void EC_GROUP_set_nid(EC_GROUP *, int); /* curve name */
 int EC_GROUP_get_nid(const EC_GROUP *);
 
+void EC_GROUP_set_asn1_flag(EC_GROUP *, int flag);
+int EC_GROUP_get_asn1_flag(const EC_GROUP *);
+
+void EC_GROUP_set_point_conversion_form(EC_GROUP *, point_conversion_form_t);
+point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
+
+unsigned char *EC_GROUP_get0_seed(const EC_GROUP *);
+size_t EC_GROUP_get_seed_len(const EC_GROUP *);
+size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
 
 /* We don't have types for field specifications and field elements in general.
  * Otherwise we could declare
@@ -242,11 +252,6 @@ DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECPKPARAMETERS, ECPKPARAMETERS)
 EC_GROUP *EC_ASN1_pkparameters2group(const ECPKPARAMETERS *); 
 ECPKPARAMETERS *EC_ASN1_group2pkparameters(const EC_GROUP *, ECPKPARAMETERS *);
 
-void EC_GROUP_set_asn1_flag(EC_GROUP *, int flag);
-int EC_GROUP_get_asn1_flag(const EC_GROUP *);
-
-void EC_GROUP_set_point_conversion_form(EC_GROUP *, point_conversion_form_t);
-point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
 
 EC_GROUP *d2i_ECParameters(EC_GROUP **, const unsigned char **in, long len);
 int i2d_ECParameters(const EC_GROUP *, unsigned char **out);
@@ -255,6 +260,13 @@ EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
 int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
 
 
+#ifndef OPENSSL_NO_BIO
+int     ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
+#endif
+#ifndef OPENSSL_NO_FP_API
+int     ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
+#endif
+
 
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
@@ -269,6 +281,8 @@ void ERR_load_EC_strings(void);
 #define EC_F_D2I_ECDSAPARAMETERS                        154
 #define EC_F_D2I_ECPARAMETERS                           155
 #define EC_F_D2I_ECPKPARAMETERS                                 161
+#define EC_F_ECPKPARAMETERS_PRINT                       166
+#define EC_F_ECPKPARAMETERS_PRINT_FP                    167
 #define EC_F_EC_ASN1_GROUP2CURVE                        159
 #define EC_F_EC_ASN1_GROUP2FIELDID                      156
 #define EC_F_EC_ASN1_GROUP2PARAMETERS                   160
index 75fa3a8..bb517d9 100644 (file)
@@ -70,12 +70,14 @@ static ERR_STRING_DATA EC_str_functs[]=
 {ERR_PACK(0,EC_F_D2I_ECDSAPARAMETERS,0),       "d2i_ECDSAParameters"},
 {ERR_PACK(0,EC_F_D2I_ECPARAMETERS,0),  "d2i_ECParameters"},
 {ERR_PACK(0,EC_F_D2I_ECPKPARAMETERS,0),        "d2i_ECPKParameters"},
+{ERR_PACK(0,EC_F_ECPKPARAMETERS_PRINT,0),      "ECPKParameters_print"},
+{ERR_PACK(0,EC_F_ECPKPARAMETERS_PRINT_FP,0),   "ECPKParameters_print_fp"},
 {ERR_PACK(0,EC_F_EC_ASN1_GROUP2CURVE,0),       "EC_ASN1_GROUP2CURVE"},
 {ERR_PACK(0,EC_F_EC_ASN1_GROUP2FIELDID,0),     "EC_ASN1_GROUP2FIELDID"},
 {ERR_PACK(0,EC_F_EC_ASN1_GROUP2PARAMETERS,0),  "EC_ASN1_GROUP2PARAMETERS"},
-{ERR_PACK(0,EC_F_EC_ASN1_GROUP2PKPARAMETERS,0),        "EC_ASN1_GROUP2PKPARAMETERS"},
+{ERR_PACK(0,EC_F_EC_ASN1_GROUP2PKPARAMETERS,0),        "EC_ASN1_group2pkparameters"},
 {ERR_PACK(0,EC_F_EC_ASN1_PARAMETERS2GROUP,0),  "EC_ASN1_PARAMETERS2GROUP"},
-{ERR_PACK(0,EC_F_EC_ASN1_PKPARAMETERS2GROUP,0),        "EC_ASN1_PKPARAMETERS2GROUP"},
+{ERR_PACK(0,EC_F_EC_ASN1_PKPARAMETERS2GROUP,0),        "EC_ASN1_pkparameters2group"},
 {ERR_PACK(0,EC_F_EC_GFP_MONT_FIELD_DECODE,0),  "ec_GFp_mont_field_decode"},
 {ERR_PACK(0,EC_F_EC_GFP_MONT_FIELD_ENCODE,0),  "ec_GFp_mont_field_encode"},
 {ERR_PACK(0,EC_F_EC_GFP_MONT_FIELD_MUL,0),     "ec_GFp_mont_field_mul"},
index 1c2ae93..7457c42 100644 (file)
@@ -148,14 +148,14 @@ struct ec_group_st {
        int asn1_flag; /* flag to control the asn1 encoding */
        point_conversion_form_t asn1_form;
 
+       unsigned char *seed; /* optional seed for parameters (appears in ASN1) */
+       size_t seed_len;
+
        void *extra_data;
        void *(*extra_data_dup_func)(void *);
        void (*extra_data_free_func)(void *);
        void (*extra_data_clear_free_func)(void *);
 
-       unsigned char *seed; /* XXX */
-       size_t seed_len;     /* XXX */
-
        /* The following members are handled by the method functions,
         * even if they appear generic */
        
index 965c229..751f8c9 100644 (file)
@@ -100,7 +100,7 @@ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)
 
        ret->curve_name = 0;    
        ret->asn1_flag  = 0;
-       ret->asn1_form  = POINT_CONVERSION_COMPRESSED;
+       ret->asn1_form  = POINT_CONVERSION_UNCOMPRESSED;
 
        ret->seed = NULL;
        ret->seed_len = 0;
@@ -345,6 +345,39 @@ point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *group
        }
 
 
+size_t EC_GROUP_set_seed(EC_GROUP *group, const unsigned char *p, size_t len)
+       {
+       if (group->seed)
+               {
+               OPENSSL_free(group->seed);
+               group->seed = NULL;
+               group->seed_len = 0;
+               }
+
+       if (!len || !p)
+               return 1;
+
+       if ((group->seed = OPENSSL_malloc(len)) == NULL)
+               return 0;
+       memcpy(group->seed, p, len);
+       group->seed_len = len;
+
+       return len;
+       }
+
+
+unsigned char *EC_GROUP_get0_seed(const EC_GROUP *group)
+       {
+       return group->seed;
+       }
+
+
+size_t EC_GROUP_get_seed_len(const EC_GROUP *group)
+       {
+       return group->seed_len;
+       }
+
+
 int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
        {
        if (group->meth->group_set_curve_GFp == 0)
index 3e60bab..5f10c2e 100644 (file)
@@ -305,7 +305,7 @@ point_conversion_form_t ECDSA_get_conversion_form(const ECDSA *ecdsa)
        return ecdsa ? ecdsa->conversion_form : 0;
 }
 
-static point_conversion_form_t default_conversion_form = POINT_CONVERSION_COMPRESSED;
+static point_conversion_form_t default_conversion_form = POINT_CONVERSION_UNCOMPRESSED;
 
 void   ECDSA_set_default_conversion_form(const point_conversion_form_t form)
 {