X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fec%2Fec_asn1.c;h=52d31c2f9642d0eeaf7d47edf8784396c2a4e29f;hp=90b64b0e04a33f227d9f5046517a876e2dc1c101;hb=7f7c05ca638c3cc6d261961fae439cd91e3c1d27;hpb=0bee0e6294882b18ffa0053597532058a19d6f89 diff --git a/crypto/ec/ec_asn1.c b/crypto/ec/ec_asn1.c index 90b64b0e04..52d31c2f96 100644 --- a/crypto/ec/ec_asn1.c +++ b/crypto/ec/ec_asn1.c @@ -1,6 +1,9 @@ /* crypto/ec/ec_asn1.c */ +/* + * Written by Nils Larsch for the OpenSSL project. + */ /* ==================================================================== - * Copyright (c) 2000-2002 The OpenSSL Project. All rights reserved. + * Copyright (c) 2000-2003 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 @@ -53,28 +56,113 @@ * */ +#include #include "ec_lcl.h" #include #include #include + +int EC_GROUP_get_basis_type(const EC_GROUP *group) + { + int i=0; + + if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) != + NID_X9_62_characteristic_two_field) + /* everything else is currently not supported */ + return 0; + + while (group->poly[i] != 0) + i++; + + if (i == 4) + return NID_X9_62_ppBasis; + else if (i == 2) + return NID_X9_62_tpBasis; + else + /* everything else is currently not supported */ + return 0; + } +#ifndef OPENSSL_NO_EC2M +int EC_GROUP_get_trinomial_basis(const EC_GROUP *group, unsigned int *k) + { + if (group == NULL) + return 0; + + if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) != + NID_X9_62_characteristic_two_field + || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] == 0))) + { + ECerr(EC_F_EC_GROUP_GET_TRINOMIAL_BASIS, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + + if (k) + *k = group->poly[1]; + + return 1; + } +int EC_GROUP_get_pentanomial_basis(const EC_GROUP *group, unsigned int *k1, + unsigned int *k2, unsigned int *k3) + { + if (group == NULL) + return 0; + + if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) != + NID_X9_62_characteristic_two_field + || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] != 0) && (group->poly[3] != 0) && (group->poly[4] == 0))) + { + ECerr(EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + + if (k1) + *k1 = group->poly[3]; + if (k2) + *k2 = group->poly[2]; + if (k3) + *k3 = group->poly[1]; + + return 1; + } +#endif + + /* some structures needed for the asn1 encoding */ -typedef struct x9_62_fieldid_st { - ASN1_OBJECT *fieldType; - ASN1_TYPE *parameters; - } X9_62_FIELDID; +typedef struct x9_62_pentanomial_st { + long k1; + long k2; + long k3; + } X9_62_PENTANOMIAL; typedef struct x9_62_characteristic_two_st { - ASN1_INTEGER *m; - ASN1_OBJECT *basis; - ASN1_TYPE *parameters; + long m; + ASN1_OBJECT *type; + union { + char *ptr; + /* NID_X9_62_onBasis */ + ASN1_NULL *onBasis; + /* NID_X9_62_tpBasis */ + ASN1_INTEGER *tpBasis; + /* NID_X9_62_ppBasis */ + X9_62_PENTANOMIAL *ppBasis; + /* anything else */ + ASN1_TYPE *other; + } p; } X9_62_CHARACTERISTIC_TWO; -typedef struct x9_62_pentanomial_st { - ASN1_INTEGER k1; - ASN1_INTEGER k2; - ASN1_INTEGER k3; - } X9_62_PENTANOMIAL; +typedef struct x9_62_fieldid_st { + ASN1_OBJECT *fieldType; + union { + char *ptr; + /* NID_X9_62_prime_field */ + ASN1_INTEGER *prime; + /* NID_X9_62_characteristic_two_field */ + X9_62_CHARACTERISTIC_TWO *char_two; + /* anything else */ + ASN1_TYPE *other; + } p; + } X9_62_FIELDID; typedef struct x9_62_curve_st { ASN1_OCTET_STRING *a; @@ -82,14 +170,14 @@ typedef struct x9_62_curve_st { ASN1_BIT_STRING *seed; } X9_62_CURVE; -struct ec_parameters_st { - ASN1_INTEGER *version; +typedef struct ec_parameters_st { + long version; X9_62_FIELDID *fieldID; X9_62_CURVE *curve; ASN1_OCTET_STRING *base; ASN1_INTEGER *order; ASN1_INTEGER *cofactor; - }/* ECPARAMETERS */; + } ECPARAMETERS; struct ecpk_parameters_st { int type; @@ -100,36 +188,52 @@ struct ecpk_parameters_st { } value; }/* ECPKPARAMETERS */; -/* the OpenSSL asn1 definitions */ +/* SEC1 ECPrivateKey */ +typedef struct ec_privatekey_st { + long version; + ASN1_OCTET_STRING *privateKey; + ECPKPARAMETERS *parameters; + ASN1_BIT_STRING *publicKey; + } EC_PRIVATEKEY; -ASN1_SEQUENCE(X9_62_FIELDID) = { - ASN1_SIMPLE(X9_62_FIELDID, fieldType, ASN1_OBJECT), - ASN1_SIMPLE(X9_62_FIELDID, parameters, ASN1_ANY) -} ASN1_SEQUENCE_END(X9_62_FIELDID) +/* the OpenSSL ASN.1 definitions */ +ASN1_SEQUENCE(X9_62_PENTANOMIAL) = { + ASN1_SIMPLE(X9_62_PENTANOMIAL, k1, LONG), + ASN1_SIMPLE(X9_62_PENTANOMIAL, k2, LONG), + ASN1_SIMPLE(X9_62_PENTANOMIAL, k3, LONG) +} ASN1_SEQUENCE_END(X9_62_PENTANOMIAL) + +DECLARE_ASN1_ALLOC_FUNCTIONS(X9_62_PENTANOMIAL) +IMPLEMENT_ASN1_ALLOC_FUNCTIONS(X9_62_PENTANOMIAL) -DECLARE_ASN1_FUNCTIONS_const(X9_62_FIELDID) -DECLARE_ASN1_ENCODE_FUNCTIONS_const(X9_62_FIELDID, X9_62_FIELDID) -IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_FIELDID) +ASN1_ADB_TEMPLATE(char_two_def) = ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.other, ASN1_ANY); + +ASN1_ADB(X9_62_CHARACTERISTIC_TWO) = { + ADB_ENTRY(NID_X9_62_onBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.onBasis, ASN1_NULL)), + ADB_ENTRY(NID_X9_62_tpBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.tpBasis, ASN1_INTEGER)), + ADB_ENTRY(NID_X9_62_ppBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.ppBasis, X9_62_PENTANOMIAL)) +} ASN1_ADB_END(X9_62_CHARACTERISTIC_TWO, 0, type, 0, &char_two_def_tt, NULL); ASN1_SEQUENCE(X9_62_CHARACTERISTIC_TWO) = { - ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, m, ASN1_INTEGER), - ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, basis, ASN1_OBJECT), - ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, parameters, ASN1_ANY) + ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, m, LONG), + ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, type, ASN1_OBJECT), + ASN1_ADB_OBJECT(X9_62_CHARACTERISTIC_TWO) } ASN1_SEQUENCE_END(X9_62_CHARACTERISTIC_TWO) -DECLARE_ASN1_FUNCTIONS_const(X9_62_CHARACTERISTIC_TWO) -DECLARE_ASN1_ENCODE_FUNCTIONS_const(X9_62_CHARACTERISTIC_TWO, X9_62_CHARACTERISTIC_TWO) -IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_CHARACTERISTIC_TWO) +DECLARE_ASN1_ALLOC_FUNCTIONS(X9_62_CHARACTERISTIC_TWO) +IMPLEMENT_ASN1_ALLOC_FUNCTIONS(X9_62_CHARACTERISTIC_TWO) -ASN1_SEQUENCE(X9_62_PENTANOMIAL) = { - ASN1_SIMPLE(X9_62_PENTANOMIAL, k1, ASN1_INTEGER), - ASN1_SIMPLE(X9_62_PENTANOMIAL, k2, ASN1_INTEGER), - ASN1_SIMPLE(X9_62_PENTANOMIAL, k3, ASN1_INTEGER) -} ASN1_SEQUENCE_END(X9_62_PENTANOMIAL) +ASN1_ADB_TEMPLATE(fieldID_def) = ASN1_SIMPLE(X9_62_FIELDID, p.other, ASN1_ANY); + +ASN1_ADB(X9_62_FIELDID) = { + ADB_ENTRY(NID_X9_62_prime_field, ASN1_SIMPLE(X9_62_FIELDID, p.prime, ASN1_INTEGER)), + ADB_ENTRY(NID_X9_62_characteristic_two_field, ASN1_SIMPLE(X9_62_FIELDID, p.char_two, X9_62_CHARACTERISTIC_TWO)) +} ASN1_ADB_END(X9_62_FIELDID, 0, fieldType, 0, &fieldID_def_tt, NULL); -DECLARE_ASN1_FUNCTIONS_const(X9_62_PENTANOMIAL) -DECLARE_ASN1_ENCODE_FUNCTIONS_const(X9_62_PENTANOMIAL, X9_62_PENTANOMIAL) -IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_PENTANOMIAL) +ASN1_SEQUENCE(X9_62_FIELDID) = { + ASN1_SIMPLE(X9_62_FIELDID, fieldType, ASN1_OBJECT), + ASN1_ADB_OBJECT(X9_62_FIELDID) +} ASN1_SEQUENCE_END(X9_62_FIELDID) ASN1_SEQUENCE(X9_62_CURVE) = { ASN1_SIMPLE(X9_62_CURVE, a, ASN1_OCTET_STRING), @@ -137,21 +241,17 @@ ASN1_SEQUENCE(X9_62_CURVE) = { ASN1_OPT(X9_62_CURVE, seed, ASN1_BIT_STRING) } ASN1_SEQUENCE_END(X9_62_CURVE) -DECLARE_ASN1_FUNCTIONS_const(X9_62_CURVE) -DECLARE_ASN1_ENCODE_FUNCTIONS_const(X9_62_CURVE, X9_62_CURVE) -IMPLEMENT_ASN1_FUNCTIONS_const(X9_62_CURVE) - ASN1_SEQUENCE(ECPARAMETERS) = { - ASN1_SIMPLE(ECPARAMETERS, version, ASN1_INTEGER), + ASN1_SIMPLE(ECPARAMETERS, version, LONG), ASN1_SIMPLE(ECPARAMETERS, fieldID, X9_62_FIELDID), ASN1_SIMPLE(ECPARAMETERS, curve, X9_62_CURVE), ASN1_SIMPLE(ECPARAMETERS, base, ASN1_OCTET_STRING), ASN1_SIMPLE(ECPARAMETERS, order, ASN1_INTEGER), - ASN1_SIMPLE(ECPARAMETERS, cofactor, ASN1_INTEGER) + ASN1_OPT(ECPARAMETERS, cofactor, ASN1_INTEGER) } ASN1_SEQUENCE_END(ECPARAMETERS) -DECLARE_ASN1_FUNCTIONS_const(ECPARAMETERS) -IMPLEMENT_ASN1_FUNCTIONS_const(ECPARAMETERS) +DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS) +IMPLEMENT_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS) ASN1_CHOICE(ECPKPARAMETERS) = { ASN1_SIMPLE(ECPKPARAMETERS, value.named_curve, ASN1_OBJECT), @@ -160,52 +260,60 @@ ASN1_CHOICE(ECPKPARAMETERS) = { } ASN1_CHOICE_END(ECPKPARAMETERS) DECLARE_ASN1_FUNCTIONS_const(ECPKPARAMETERS) +DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECPKPARAMETERS, ECPKPARAMETERS) IMPLEMENT_ASN1_FUNCTIONS_const(ECPKPARAMETERS) ASN1_SEQUENCE(EC_PRIVATEKEY) = { ASN1_SIMPLE(EC_PRIVATEKEY, version, LONG), ASN1_SIMPLE(EC_PRIVATEKEY, privateKey, ASN1_OCTET_STRING), - ASN1_OPT(EC_PRIVATEKEY, parameters, ECPKPARAMETERS), - ASN1_OPT(EC_PRIVATEKEY, publicKey, ASN1_BIT_STRING) + ASN1_EXP_OPT(EC_PRIVATEKEY, parameters, ECPKPARAMETERS, 0), + ASN1_EXP_OPT(EC_PRIVATEKEY, publicKey, ASN1_BIT_STRING, 1) } ASN1_SEQUENCE_END(EC_PRIVATEKEY) +DECLARE_ASN1_FUNCTIONS_const(EC_PRIVATEKEY) +DECLARE_ASN1_ENCODE_FUNCTIONS_const(EC_PRIVATEKEY, EC_PRIVATEKEY) IMPLEMENT_ASN1_FUNCTIONS_const(EC_PRIVATEKEY) -/* some internal functions */ +/* some declarations of internal function */ -static X9_62_FIELDID *ec_asn1_group2field(const EC_GROUP *, X9_62_FIELDID *); -static X9_62_CURVE *ec_asn1_group2curve(const EC_GROUP *, X9_62_CURVE *); +/* ec_asn1_group2field() sets the values in a X9_62_FIELDID object */ +static int ec_asn1_group2fieldid(const EC_GROUP *, X9_62_FIELDID *); +/* ec_asn1_group2curve() sets the values in a X9_62_CURVE object */ +static int ec_asn1_group2curve(const EC_GROUP *, X9_62_CURVE *); +/* ec_asn1_parameters2group() creates a EC_GROUP object from a + * ECPARAMETERS object */ static EC_GROUP *ec_asn1_parameters2group(const ECPARAMETERS *); -static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *, - ECPARAMETERS *); +/* ec_asn1_group2parameters() creates a ECPARAMETERS object from a + * EC_GROUP object */ +static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *,ECPARAMETERS *); +/* ec_asn1_pkparameters2group() creates a EC_GROUP object from a + * ECPKPARAMETERS object */ +static EC_GROUP *ec_asn1_pkparameters2group(const ECPKPARAMETERS *); +/* ec_asn1_group2pkparameters() creates a ECPKPARAMETERS object from a + * EC_GROUP object */ +static ECPKPARAMETERS *ec_asn1_group2pkparameters(const EC_GROUP *, + ECPKPARAMETERS *); -static X9_62_FIELDID *ec_asn1_group2field(const EC_GROUP *group, - X9_62_FIELDID *field) + +/* the function definitions */ + +static int ec_asn1_group2fieldid(const EC_GROUP *group, X9_62_FIELDID *field) { - int ok=0, nid; - X9_62_FIELDID *ret=NULL; - BIGNUM *tmp=NULL; + int ok=0, nid; + BIGNUM *tmp = NULL; - if (field == NULL) - { - if ((ret = X9_62_FIELDID_new()) == NULL) - { - ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); - return NULL; - } - } - else - { - ret = field; - if (ret->fieldType != NULL) - ASN1_OBJECT_free(ret->fieldType); - if (ret->parameters != NULL) - ASN1_TYPE_free(ret->parameters); - } + if (group == NULL || field == NULL) + return 0; - nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group)); + /* clear the old values (if necessary) */ + if (field->fieldType != NULL) + ASN1_OBJECT_free(field->fieldType); + if (field->p.other != NULL) + ASN1_TYPE_free(field->p.other); - if ((ret->fieldType = OBJ_nid2obj(nid)) == NULL) + nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group)); + /* set OID for the field */ + if ((field->fieldType = OBJ_nid2obj(nid)) == NULL) { ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB); goto err; @@ -218,79 +326,133 @@ static X9_62_FIELDID *ec_asn1_group2field(const EC_GROUP *group, ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); goto err; } - if ((ret->parameters = ASN1_TYPE_new()) == NULL) + /* the parameters are specified by the prime number p */ + if (!EC_GROUP_get_curve_GFp(group, tmp, NULL, NULL, NULL)) + { + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB); + goto err; + } + /* set the prime number */ + field->p.prime = BN_to_ASN1_INTEGER(tmp,NULL); + if (field->p.prime == NULL) + { + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_ASN1_LIB); + goto err; + } + } + else /* nid == NID_X9_62_characteristic_two_field */ +#ifdef OPENSSL_NO_EC2M + { + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, EC_R_GF2M_NOT_SUPPORTED); + goto err; + } +#else + { + int field_type; + X9_62_CHARACTERISTIC_TWO *char_two; + + field->p.char_two = X9_62_CHARACTERISTIC_TWO_new(); + char_two = field->p.char_two; + + if (char_two == NULL) { ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); goto err; } - ret->parameters->type = V_ASN1_INTEGER; - if (!EC_GROUP_get_curve_GFp(group, tmp, NULL, NULL, NULL)) + + char_two->m = (long)EC_GROUP_get_degree(group); + + field_type = EC_GROUP_get_basis_type(group); + + if (field_type == 0) { ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB); goto err; } - ret->parameters->value.integer = BN_to_ASN1_INTEGER(tmp, NULL); - if (ret->parameters->value.integer == NULL) + /* set base type OID */ + if ((char_two->type = OBJ_nid2obj(field_type)) == NULL) { - ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_ASN1_LIB); + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB); goto err; } + + if (field_type == NID_X9_62_tpBasis) + { + unsigned int k; + + if (!EC_GROUP_get_trinomial_basis(group, &k)) + goto err; + + char_two->p.tpBasis = ASN1_INTEGER_new(); + if (!char_two->p.tpBasis) + { + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); + goto err; + } + if (!ASN1_INTEGER_set(char_two->p.tpBasis, (long)k)) + { + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, + ERR_R_ASN1_LIB); + goto err; + } + } + else if (field_type == NID_X9_62_ppBasis) + { + unsigned int k1, k2, k3; + + if (!EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3)) + goto err; + + char_two->p.ppBasis = X9_62_PENTANOMIAL_new(); + if (!char_two->p.ppBasis) + { + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); + goto err; + } + + /* set k? values */ + char_two->p.ppBasis->k1 = (long)k1; + char_two->p.ppBasis->k2 = (long)k2; + char_two->p.ppBasis->k3 = (long)k3; + } + else /* field_type == NID_X9_62_onBasis */ + { + /* for ONB the parameters are (asn1) NULL */ + char_two->p.onBasis = ASN1_NULL_new(); + if (!char_two->p.onBasis) + { + ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); + goto err; + } + } } - else - goto err; +#endif ok = 1; -err : if (!ok) - { - if (ret && !field) - X9_62_FIELDID_free(ret); - ret = NULL; - } - if (tmp) +err : if (tmp) BN_free(tmp); - return(ret); + return(ok); } -static X9_62_CURVE *ec_asn1_group2curve(const EC_GROUP *group, - X9_62_CURVE *curve) +static int ec_asn1_group2curve(const EC_GROUP *group, X9_62_CURVE *curve) { int ok=0, nid; - X9_62_CURVE *ret=NULL; - BIGNUM *tmp_1=NULL, - *tmp_2=NULL; - unsigned char *buffer_1=NULL, - *buffer_2=NULL, - *a_buf=NULL, - *b_buf=NULL; + BIGNUM *tmp_1=NULL, *tmp_2=NULL; + unsigned char *buffer_1=NULL, *buffer_2=NULL, + *a_buf=NULL, *b_buf=NULL; size_t len_1, len_2; unsigned char char_zero = 0; + if (!group || !curve || !curve->a || !curve->b) + return 0; + if ((tmp_1 = BN_new()) == NULL || (tmp_2 = BN_new()) == NULL) { ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE); goto err; } - if (curve == NULL) - { - if ((ret = X9_62_CURVE_new()) == NULL) - { - ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE); - goto err; - } - } - else - { - ret = curve; - if (ret->a) - ASN1_OCTET_STRING_free(ret->a); - if (ret->b) - ASN1_OCTET_STRING_free(ret->b); - if (ret->seed) - ASN1_BIT_STRING_free(ret->seed); - } - nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group)); /* get a and b */ @@ -301,66 +463,67 @@ static X9_62_CURVE *ec_asn1_group2curve(const EC_GROUP *group, ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_EC_LIB); goto err; } + } +#ifndef OPENSSL_NO_EC2M + else /* nid == NID_X9_62_characteristic_two_field */ + { + if (!EC_GROUP_get_curve_GF2m(group, NULL, tmp_1, tmp_2, NULL)) + { + ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_EC_LIB); + goto err; + } + } +#endif + len_1 = (size_t)BN_num_bytes(tmp_1); + len_2 = (size_t)BN_num_bytes(tmp_2); - len_1 = (size_t)BN_num_bytes(tmp_1); - len_2 = (size_t)BN_num_bytes(tmp_2); - - if (len_1 == 0) + if (len_1 == 0) + { + /* len_1 == 0 => a == 0 */ + a_buf = &char_zero; + len_1 = 1; + } + else + { + if ((buffer_1 = OPENSSL_malloc(len_1)) == NULL) { - /* len_1 == 0 => a == 0 */ - a_buf = &char_zero; - len_1 = 1; + ECerr(EC_F_EC_ASN1_GROUP2CURVE, + ERR_R_MALLOC_FAILURE); + goto err; } - else + if ( (len_1 = BN_bn2bin(tmp_1, buffer_1)) == 0) { - if ((buffer_1 = OPENSSL_malloc(len_1)) == NULL) - { - ECerr(EC_F_EC_ASN1_GROUP2CURVE, - ERR_R_MALLOC_FAILURE); - goto err; - } - if ( (len_1 = BN_bn2bin(tmp_1, buffer_1)) == 0) - { - ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB); - goto err; - } - a_buf = buffer_1; + ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB); + goto err; } + a_buf = buffer_1; + } - if (len_2 == 0) + if (len_2 == 0) + { + /* len_2 == 0 => b == 0 */ + b_buf = &char_zero; + len_2 = 1; + } + else + { + if ((buffer_2 = OPENSSL_malloc(len_2)) == NULL) { - /* len_2 == 0 => b == 0 */ - b_buf = &char_zero; - len_2 = 1; + ECerr(EC_F_EC_ASN1_GROUP2CURVE, + ERR_R_MALLOC_FAILURE); + goto err; } - else + if ( (len_2 = BN_bn2bin(tmp_2, buffer_2)) == 0) { - if ((buffer_2 = OPENSSL_malloc(len_2)) == NULL) - { - ECerr(EC_F_EC_ASN1_GROUP2CURVE, - ERR_R_MALLOC_FAILURE); - goto err; - } - if ( (len_2 = BN_bn2bin(tmp_2, buffer_2)) == 0) - { - ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB); - goto err; - } - b_buf = buffer_2; + ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB); + goto err; } + b_buf = buffer_2; } - else - goto err; - + /* set a and b */ - if ((ret->a = M_ASN1_OCTET_STRING_new()) == NULL || - (ret->b = M_ASN1_OCTET_STRING_new()) == NULL ) - { - ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE); - goto err; - } - if (!M_ASN1_OCTET_STRING_set(ret->a, a_buf, len_1) || - !M_ASN1_OCTET_STRING_set(ret->b, b_buf, len_2)) + if (!M_ASN1_OCTET_STRING_set(curve->a, a_buf, len_1) || + !M_ASN1_OCTET_STRING_set(curve->b, b_buf, len_2)) { ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB); goto err; @@ -369,8 +532,15 @@ static X9_62_CURVE *ec_asn1_group2curve(const EC_GROUP *group, /* set the seed (optional) */ if (group->seed) { - if ((ret->seed = ASN1_BIT_STRING_new()) == NULL) goto err; - if (!ASN1_BIT_STRING_set(ret->seed, group->seed, + if (!curve->seed) + if ((curve->seed = ASN1_BIT_STRING_new()) == NULL) + { + ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE); + goto err; + } + curve->seed->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); + curve->seed->flags |= ASN1_STRING_FLAG_BITS_LEFT; + if (!ASN1_BIT_STRING_set(curve->seed, group->seed, (int)group->seed_len)) { ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB); @@ -378,17 +548,17 @@ static X9_62_CURVE *ec_asn1_group2curve(const EC_GROUP *group, } } else - ret->seed = NULL; + { + if (curve->seed) + { + ASN1_BIT_STRING_free(curve->seed); + curve->seed = NULL; + } + } ok = 1; -err : if (!ok) - { - if (ret && !curve) - X9_62_CURVE_free(ret); - ret = NULL; - } - if (buffer_1) +err: if (buffer_1) OPENSSL_free(buffer_1); if (buffer_2) OPENSSL_free(buffer_2); @@ -396,8 +566,8 @@ err : if (!ok) BN_free(tmp_1); if (tmp_2) BN_free(tmp_2); - return(ret); -} + return(ok); + } static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *group, ECPARAMETERS *param) @@ -429,28 +599,17 @@ static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *group, ret = param; /* set the version (always one) */ - if (ret->version == NULL && !(ret->version = ASN1_INTEGER_new())) - { - ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_MALLOC_FAILURE); - goto err; - } - if (!ASN1_INTEGER_set(ret->version, (long)0x1)) - { - ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_ASN1_LIB); - goto err; - } + ret->version = (long)0x1; /* set the fieldID */ - ret->fieldID = ec_asn1_group2field(group, ret->fieldID); - if (ret->fieldID == NULL) + if (!ec_asn1_group2fieldid(group, ret->fieldID)) { ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB); goto err; } /* set the curve */ - ret->curve = ec_asn1_group2curve(group, ret->curve); - if (ret->curve == NULL) + if (!ec_asn1_group2curve(group, ret->curve)) { ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB); goto err; @@ -505,17 +664,15 @@ static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *group, goto err; } - /* set the cofactor */ - if (!EC_GROUP_get_cofactor(group, tmp, NULL)) - { - ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB); - goto err; - } - ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor); - if (ret->cofactor == NULL) + /* set the cofactor (optional) */ + if (EC_GROUP_get_cofactor(group, tmp, NULL)) { - ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_ASN1_LIB); - goto err; + ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor); + if (ret->cofactor == NULL) + { + ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_ASN1_LIB); + goto err; + } } ok = 1; @@ -533,7 +690,7 @@ err : if(!ok) return(ret); } -ECPKPARAMETERS *EC_ASN1_group2pkparameters(const EC_GROUP *group, +ECPKPARAMETERS *ec_asn1_group2pkparameters(const EC_GROUP *group, ECPKPARAMETERS *params) { int ok = 1, tmp; @@ -561,7 +718,7 @@ ECPKPARAMETERS *EC_ASN1_group2pkparameters(const EC_GROUP *group, /* use the asn1 OID to describe the * the elliptic curve parameters */ - tmp = EC_GROUP_get_nid(group); + tmp = EC_GROUP_get_curve_name(group); if (tmp) { ret->type = 0; @@ -569,15 +726,8 @@ ECPKPARAMETERS *EC_ASN1_group2pkparameters(const EC_GROUP *group, ok = 0; } else - { - /* we have no nid => use the normal - * ECPARAMETERS structure - */ - ret->type = 1; - if ((ret->value.parameters = ec_asn1_group2parameters( - group, NULL)) == NULL) - ok = 0; - } + /* we don't kmow the nid => ERROR */ + ok = 0; } else { @@ -598,79 +748,180 @@ ECPKPARAMETERS *EC_ASN1_group2pkparameters(const EC_GROUP *group, static EC_GROUP *ec_asn1_parameters2group(const ECPARAMETERS *params) { - int ok=0, tmp; - EC_GROUP *ret=NULL; - BIGNUM *p=NULL, *a=NULL, *b=NULL; - EC_POINT *point=NULL; + int ok = 0, tmp; + EC_GROUP *ret = NULL; + BIGNUM *p = NULL, *a = NULL, *b = NULL; + EC_POINT *point=NULL; + long field_bits; if (!params->fieldID || !params->fieldID->fieldType || - !params->fieldID->parameters) + !params->fieldID->p.ptr) { ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); goto err; } - tmp = OBJ_obj2nid(params->fieldID->fieldType); + /* now extract the curve parameters a and b */ + if (!params->curve || !params->curve->a || + !params->curve->a->data || !params->curve->b || + !params->curve->b->data) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); + goto err; + } + a = BN_bin2bn(params->curve->a->data, params->curve->a->length, NULL); + if (a == NULL) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_BN_LIB); + goto err; + } + b = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL); + if (b == NULL) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_BN_LIB); + goto err; + } + /* get the field parameters */ + tmp = OBJ_obj2nid(params->fieldID->fieldType); if (tmp == NID_X9_62_characteristic_two_field) +#ifdef OPENSSL_NO_EC2M { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_NOT_IMPLEMENTED); + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_GF2M_NOT_SUPPORTED); goto err; } - else if (tmp == NID_X9_62_prime_field) +#else { - /* we have a curve over a prime field */ - /* extract the prime number */ - if (params->fieldID->parameters->type != V_ASN1_INTEGER || - !params->fieldID->parameters->value.integer) - { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); - goto err; - } - p = ASN1_INTEGER_to_BN(params->fieldID->parameters->value.integer, NULL); - if (p == NULL) - { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB); - goto err; - } - /* now extract the curve parameters a and b */ - if (!params->curve || !params->curve->a || - !params->curve->a->data || !params->curve->b || - !params->curve->b->data) + X9_62_CHARACTERISTIC_TWO *char_two; + + char_two = params->fieldID->p.char_two; + + field_bits = char_two->m; + if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS) { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_FIELD_TOO_LARGE); goto err; } - a = BN_bin2bn(params->curve->a->data, - params->curve->a->length, NULL); - if (a == NULL) + + if ((p = BN_new()) == NULL) { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_BN_LIB); + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_MALLOC_FAILURE); goto err; } - b = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL); - if (b == NULL) + + /* get the base type */ + tmp = OBJ_obj2nid(char_two->type); + + if (tmp == NID_X9_62_tpBasis) { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_BN_LIB); - goto err; + long tmp_long; + + if (!char_two->p.tpBasis) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); + goto err; + } + + tmp_long = ASN1_INTEGER_get(char_two->p.tpBasis); + + if (!(char_two->m > tmp_long && tmp_long > 0)) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_TRINOMIAL_BASIS); + goto err; + } + + /* create the polynomial */ + if (!BN_set_bit(p, (int)char_two->m)) + goto err; + if (!BN_set_bit(p, (int)tmp_long)) + goto err; + if (!BN_set_bit(p, 0)) + goto err; } - /* create the EC_GROUP structure */ -/* TODO */ - ret = EC_GROUP_new_curve_GFp(p, a, b, NULL); - if (ret == NULL) + else if (tmp == NID_X9_62_ppBasis) { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_EC_LIB); + X9_62_PENTANOMIAL *penta; + + penta = char_two->p.ppBasis; + if (!penta) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); + goto err; + } + + if (!(char_two->m > penta->k3 && penta->k3 > penta->k2 && penta->k2 > penta->k1 && penta->k1 > 0)) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_PENTANOMIAL_BASIS); + goto err; + } + + /* create the polynomial */ + if (!BN_set_bit(p, (int)char_two->m)) goto err; + if (!BN_set_bit(p, (int)penta->k1)) goto err; + if (!BN_set_bit(p, (int)penta->k2)) goto err; + if (!BN_set_bit(p, (int)penta->k3)) goto err; + if (!BN_set_bit(p, 0)) goto err; + } + else if (tmp == NID_X9_62_onBasis) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_NOT_IMPLEMENTED); + goto err; + } + else /* error */ + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); + goto err; + } + + /* create the EC_GROUP structure */ + ret = EC_GROUP_new_curve_GF2m(p, a, b, NULL); + } +#endif + else if (tmp == NID_X9_62_prime_field) + { + /* we have a curve over a prime field */ + /* extract the prime number */ + if (!params->fieldID->p.prime) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); + goto err; + } + p = ASN1_INTEGER_to_BN(params->fieldID->p.prime, NULL); + if (p == NULL) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB); + goto err; + } + + if (BN_is_negative(p) || BN_is_zero(p)) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_FIELD); + goto err; + } + + field_bits = BN_num_bits(p); + if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_FIELD_TOO_LARGE); goto err; } - /* create the generator */ - if ((point = EC_POINT_new(ret)) == NULL) goto err; + + /* create the EC_GROUP structure */ + ret = EC_GROUP_new_curve_GFp(p, a, b, NULL); } - else + else { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_UNKNOWN_FIELD); + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_FIELD); goto err; } + if (ret == NULL) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_EC_LIB); + goto err; + } + + /* extract seed (optional) */ if (params->curve->seed != NULL) { if (ret->seed != NULL) @@ -686,22 +937,19 @@ static EC_GROUP *ec_asn1_parameters2group(const ECPARAMETERS *params) ret->seed_len = params->curve->seed->length; } - if (!params->order || !params->cofactor || !params->base || - !params->base->data) + if (!params->order || !params->base || !params->base->data) { ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); goto err; } + if ((point = EC_POINT_new(ret)) == NULL) goto err; - a = ASN1_INTEGER_to_BN(params->order, a); - b = ASN1_INTEGER_to_BN(params->cofactor, b); - if (!a || !b) - { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB); - goto err; - } + /* set the point conversion form */ + EC_GROUP_set_point_conversion_form(ret, (point_conversion_form_t) + (params->base->data[0] & ~0x01)); + /* extract the ec point */ if (!EC_POINT_oct2point(ret, point, params->base->data, params->base->length, NULL)) { @@ -709,10 +957,39 @@ static EC_GROUP *ec_asn1_parameters2group(const ECPARAMETERS *params) goto err; } - /* set the point conversion form */ - EC_GROUP_set_point_conversion_form(ret, (point_conversion_form_t) - (params->base->data[0] & ~0x01)); - + /* extract the order */ + if ((a = ASN1_INTEGER_to_BN(params->order, a)) == NULL) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB); + goto err; + } + if (BN_is_negative(a) || BN_is_zero(a)) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_GROUP_ORDER); + goto err; + } + if (BN_num_bits(a) > (int)field_bits + 1) /* Hasse bound */ + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_GROUP_ORDER); + goto err; + } + + /* extract the cofactor (optional) */ + if (params->cofactor == NULL) + { + if (b) + { + BN_free(b); + b = NULL; + } + } + else + if ((b = ASN1_INTEGER_to_BN(params->cofactor, b)) == NULL) + { + ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB); + goto err; + } + /* set the generator, order and cofactor (if present) */ if (!EC_GROUP_set_generator(ret, point, a, b)) { ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_EC_LIB); @@ -739,7 +1016,7 @@ err: if (!ok) return(ret); } -EC_GROUP *EC_ASN1_pkparameters2group(const ECPKPARAMETERS *params) +EC_GROUP *ec_asn1_pkparameters2group(const ECPKPARAMETERS *params) { EC_GROUP *ret=NULL; int tmp=0; @@ -754,7 +1031,7 @@ EC_GROUP *EC_ASN1_pkparameters2group(const ECPKPARAMETERS *params) if (params->type == 0) { /* the curve is given by an OID */ tmp = OBJ_obj2nid(params->value.named_curve); - if ((ret = EC_GROUP_new_by_name(tmp)) == NULL) + if ((ret = EC_GROUP_new_by_curve_name(tmp)) == NULL) { ECerr(EC_F_EC_ASN1_PKPARAMETERS2GROUP, EC_R_EC_GROUP_NEW_BY_NAME_FAILURE); @@ -778,43 +1055,16 @@ EC_GROUP *EC_ASN1_pkparameters2group(const ECPKPARAMETERS *params) return NULL; } else - { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR); - return NULL; - } - - return ret; -} - -/* EC_GROUP <-> DER encoding of EC[PK]PARAMETERS */ - -EC_GROUP *d2i_ECParameters(EC_GROUP **a, const unsigned char **in, long len) - { - EC_GROUP *group = NULL; - ECPARAMETERS *params = NULL; - - if ((params = d2i_ECPARAMETERS(NULL, in, len)) == NULL) { - ECerr(EC_F_D2I_ECPARAMETERS, EC_R_D2I_ECPARAMETERS_FAILURE); - ECPARAMETERS_free(params); + ECerr(EC_F_EC_ASN1_PKPARAMETERS2GROUP, EC_R_ASN1_ERROR); return NULL; } - - if ((group = ec_asn1_parameters2group(params)) == NULL) - { - ECerr(EC_F_D2I_ECPARAMETERS, EC_R_PARAMETERS2GROUP_FAILURE); - return NULL; - } - if (a && *a) - EC_GROUP_clear_free(*a); - if (a) - *a = group; - - ECPARAMETERS_free(params); - return(group); + return ret; } +/* EC_GROUP <-> DER encoding of ECPKPARAMETERS */ + EC_GROUP *d2i_ECPKParameters(EC_GROUP **a, const unsigned char **in, long len) { EC_GROUP *group = NULL; @@ -827,9 +1077,10 @@ EC_GROUP *d2i_ECPKParameters(EC_GROUP **a, const unsigned char **in, long len) return NULL; } - if ((group = EC_ASN1_pkparameters2group(params)) == NULL) + if ((group = ec_asn1_pkparameters2group(params)) == NULL) { ECerr(EC_F_D2I_ECPKPARAMETERS, EC_R_PKPARAMETERS2GROUP_FAILURE); + ECPKPARAMETERS_free(params); return NULL; } @@ -843,40 +1094,373 @@ EC_GROUP *d2i_ECPKParameters(EC_GROUP **a, const unsigned char **in, long len) return(group); } -int i2d_ECParameters(const EC_GROUP *a, unsigned char **out) +int i2d_ECPKParameters(const EC_GROUP *a, unsigned char **out) { int ret=0; - ECPARAMETERS *tmp = ec_asn1_group2parameters(a, NULL); + ECPKPARAMETERS *tmp = ec_asn1_group2pkparameters(a, NULL); if (tmp == NULL) { - ECerr(EC_F_I2D_ECPARAMETERS, EC_R_GROUP2PARAMETERS_FAILURE); + ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_GROUP2PKPARAMETERS_FAILURE); return 0; } - if ((ret = i2d_ECPARAMETERS(tmp, out)) == 0) + if ((ret = i2d_ECPKPARAMETERS(tmp, out)) == 0) { - ECerr(EC_F_I2D_ECPARAMETERS, EC_R_I2D_EC_PARAMETERS_FAILURE); - ECPARAMETERS_free(tmp); + ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_I2D_ECPKPARAMETERS_FAILURE); + ECPKPARAMETERS_free(tmp); return 0; } - ECPARAMETERS_free(tmp); + ECPKPARAMETERS_free(tmp); return(ret); } -int i2d_ECPKParameters(const EC_GROUP *a, unsigned char **out) +/* some EC_KEY functions */ + +EC_KEY *d2i_ECPrivateKey(EC_KEY **a, const unsigned char **in, long len) { - int ret=0; - ECPKPARAMETERS *tmp = EC_ASN1_group2pkparameters(a, NULL); - if (tmp == NULL) + int ok=0; + EC_KEY *ret=NULL; + EC_PRIVATEKEY *priv_key=NULL; + + if ((priv_key = EC_PRIVATEKEY_new()) == NULL) { - ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_GROUP2PKPARAMETERS_FAILURE); + ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE); + return NULL; + } + + if ((priv_key = d2i_EC_PRIVATEKEY(&priv_key, in, len)) == NULL) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); + EC_PRIVATEKEY_free(priv_key); + return NULL; + } + + if (a == NULL || *a == NULL) + { + if ((ret = EC_KEY_new()) == NULL) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, + ERR_R_MALLOC_FAILURE); + goto err; + } + if (a) + *a = ret; + } + else + ret = *a; + + if (priv_key->parameters) + { + if (ret->group) + EC_GROUP_clear_free(ret->group); + ret->group = ec_asn1_pkparameters2group(priv_key->parameters); + } + + if (ret->group == NULL) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); + goto err; + } + + ret->version = priv_key->version; + + if (priv_key->privateKey) + { + ret->priv_key = BN_bin2bn( + M_ASN1_STRING_data(priv_key->privateKey), + M_ASN1_STRING_length(priv_key->privateKey), + ret->priv_key); + if (ret->priv_key == NULL) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, + ERR_R_BN_LIB); + goto err; + } + } + else + { + ECerr(EC_F_D2I_ECPRIVATEKEY, + EC_R_MISSING_PRIVATE_KEY); + goto err; + } + + if (ret->pub_key) + EC_POINT_clear_free(ret->pub_key); + ret->pub_key = EC_POINT_new(ret->group); + if (ret->pub_key == NULL) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); + goto err; + } + + if (priv_key->publicKey) + { + const unsigned char *pub_oct; + int pub_oct_len; + + pub_oct = M_ASN1_STRING_data(priv_key->publicKey); + pub_oct_len = M_ASN1_STRING_length(priv_key->publicKey); + /* The first byte - point conversion form - must be present. */ + if (pub_oct_len <= 0) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, EC_R_BUFFER_TOO_SMALL); + goto err; + } + /* Save the point conversion form. */ + ret->conv_form = (point_conversion_form_t)(pub_oct[0] & ~0x01); + if (!EC_POINT_oct2point(ret->group, ret->pub_key, + pub_oct, (size_t)(pub_oct_len), NULL)) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); + goto err; + } + } + else + { + if (!EC_POINT_mul(ret->group, ret->pub_key, ret->priv_key, NULL, NULL, NULL)) + { + ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); + goto err; + } + /* Remember the original private-key-only encoding. */ + ret->enc_flag |= EC_PKEY_NO_PUBKEY; + } + + ok = 1; +err: + if (!ok) + { + if (ret) + EC_KEY_free(ret); + ret = NULL; + } + + if (priv_key) + EC_PRIVATEKEY_free(priv_key); + + return(ret); + } + +int i2d_ECPrivateKey(EC_KEY *a, unsigned char **out) + { + int ret=0, ok=0; + unsigned char *buffer=NULL; + size_t buf_len=0, tmp_len; + EC_PRIVATEKEY *priv_key=NULL; + + if (a == NULL || a->group == NULL || a->priv_key == NULL || + (!(a->enc_flag & EC_PKEY_NO_PUBKEY) && a->pub_key == NULL)) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, + ERR_R_PASSED_NULL_PARAMETER); + goto err; + } + + if ((priv_key = EC_PRIVATEKEY_new()) == NULL) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, + ERR_R_MALLOC_FAILURE); + goto err; + } + + priv_key->version = a->version; + + buf_len = (size_t)BN_num_bytes(a->priv_key); + buffer = OPENSSL_malloc(buf_len); + if (buffer == NULL) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, + ERR_R_MALLOC_FAILURE); + goto err; + } + + if (!BN_bn2bin(a->priv_key, buffer)) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_BN_LIB); + goto err; + } + + if (!M_ASN1_OCTET_STRING_set(priv_key->privateKey, buffer, buf_len)) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB); + goto err; + } + + if (!(a->enc_flag & EC_PKEY_NO_PARAMETERS)) + { + if ((priv_key->parameters = ec_asn1_group2pkparameters( + a->group, priv_key->parameters)) == NULL) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB); + goto err; + } + } + + if (!(a->enc_flag & EC_PKEY_NO_PUBKEY)) + { + priv_key->publicKey = M_ASN1_BIT_STRING_new(); + if (priv_key->publicKey == NULL) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, + ERR_R_MALLOC_FAILURE); + goto err; + } + + tmp_len = EC_POINT_point2oct(a->group, a->pub_key, + a->conv_form, NULL, 0, NULL); + + if (tmp_len > buf_len) + { + unsigned char *tmp_buffer = OPENSSL_realloc(buffer, tmp_len); + if (!tmp_buffer) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE); + goto err; + } + buffer = tmp_buffer; + buf_len = tmp_len; + } + + if (!EC_POINT_point2oct(a->group, a->pub_key, + a->conv_form, buffer, buf_len, NULL)) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB); + goto err; + } + + priv_key->publicKey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); + priv_key->publicKey->flags |= ASN1_STRING_FLAG_BITS_LEFT; + if (!M_ASN1_BIT_STRING_set(priv_key->publicKey, buffer, + buf_len)) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB); + goto err; + } + } + + if ((ret = i2d_EC_PRIVATEKEY(priv_key, out)) == 0) + { + ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB); + goto err; + } + ok=1; +err: + if (buffer) + OPENSSL_free(buffer); + if (priv_key) + EC_PRIVATEKEY_free(priv_key); + return(ok?ret:0); + } + +int i2d_ECParameters(EC_KEY *a, unsigned char **out) + { + if (a == NULL) + { + ECerr(EC_F_I2D_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER); return 0; } - if ((ret = i2d_ECPKPARAMETERS(tmp, out)) == 0) + return i2d_ECPKParameters(a->group, out); + } + +EC_KEY *d2i_ECParameters(EC_KEY **a, const unsigned char **in, long len) + { + EC_KEY *ret; + + if (in == NULL || *in == NULL) { - ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_I2D_ECPKPARAMETERS_FAILURE); - ECPKPARAMETERS_free(tmp); + ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER); + return NULL; + } + + if (a == NULL || *a == NULL) + { + if ((ret = EC_KEY_new()) == NULL) + { + ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_MALLOC_FAILURE); + return NULL; + } + if (a) + *a = ret; + } + else + ret = *a; + + if (!d2i_ECPKParameters(&ret->group, in, len)) + { + ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_EC_LIB); + return NULL; + } + + return ret; + } + +EC_KEY *o2i_ECPublicKey(EC_KEY **a, const unsigned char **in, long len) + { + EC_KEY *ret=NULL; + + if (a == NULL || (*a) == NULL || (*a)->group == NULL) + { + /* sorry, but a EC_GROUP-structur is necessary + * to set the public key */ + ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER); return 0; - } - ECPKPARAMETERS_free(tmp); - return(ret); + } + ret = *a; + if (ret->pub_key == NULL && + (ret->pub_key = EC_POINT_new(ret->group)) == NULL) + { + ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_MALLOC_FAILURE); + return 0; + } + if (!EC_POINT_oct2point(ret->group, ret->pub_key, *in, len, NULL)) + { + ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_EC_LIB); + return 0; + } + /* save the point conversion form */ + ret->conv_form = (point_conversion_form_t)(*in[0] & ~0x01); + *in += len; + return ret; + } + +int i2o_ECPublicKey(EC_KEY *a, unsigned char **out) + { + size_t buf_len=0; + int new_buffer = 0; + + if (a == NULL) + { + ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + + buf_len = EC_POINT_point2oct(a->group, a->pub_key, + a->conv_form, NULL, 0, NULL); + + if (out == NULL || buf_len == 0) + /* out == NULL => just return the length of the octet string */ + return buf_len; + + if (*out == NULL) + { + if ((*out = OPENSSL_malloc(buf_len)) == NULL) + { + ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_MALLOC_FAILURE); + return 0; + } + new_buffer = 1; + } + if (!EC_POINT_point2oct(a->group, a->pub_key, a->conv_form, + *out, buf_len, NULL)) + { + ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_EC_LIB); + if (new_buffer) + { + OPENSSL_free(*out); + *out = NULL; + } + return 0; + } + if (!new_buffer) + *out += buf_len; + return buf_len; }