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EC_KEY_METHOD keygen support.

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Add keygen to EC_KEY_METHOD. Redirect EC_KEY_generate_key through
method and set the current EC key generation function as the default.

Reviewed-by: Richard Levitte <levitte@openssl.org>
This commit is contained in:
Dr. Stephen Henson 2015-10-22 14:53:23 +01:00
parent d2fa70d82b
commit 5a6a1029d2
5 changed files with 19 additions and 6 deletions
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1
crypto/ec/ec_err.c
View File

@ -300,6 +300,7 @@ static ERR_STRING_DATA EC_str_reasons[] = {
{ERR_REASON(EC_R_NOT_INITIALIZED), "not initialized"}, {ERR_REASON(EC_R_NOT_INITIALIZED), "not initialized"},
{ERR_REASON(EC_R_NO_FIELD_MOD), "no field mod"}, {ERR_REASON(EC_R_NO_FIELD_MOD), "no field mod"},
{ERR_REASON(EC_R_NO_PARAMETERS_SET), "no parameters set"}, {ERR_REASON(EC_R_NO_PARAMETERS_SET), "no parameters set"},
{ERR_REASON(EC_R_OPERATION_NOT_SUPPORTED), "operation not supported"},
{ERR_REASON(EC_R_PASSED_NULL_PARAMETER), "passed null parameter"}, {ERR_REASON(EC_R_PASSED_NULL_PARAMETER), "passed null parameter"},
{ERR_REASON(EC_R_PEER_KEY_ERROR), "peer key error"}, {ERR_REASON(EC_R_PEER_KEY_ERROR), "peer key error"},
{ERR_REASON(EC_R_PKPARAMETERS2GROUP_FAILURE), {ERR_REASON(EC_R_PKPARAMETERS2GROUP_FAILURE),

17
crypto/ec/ec_key.c
View File

@ -203,15 +203,22 @@ int EC_KEY_up_ref(EC_KEY *r)
int EC_KEY_generate_key(EC_KEY *eckey) int EC_KEY_generate_key(EC_KEY *eckey)
{ {
int ok = 0;
BN_CTX *ctx = NULL;
BIGNUM *priv_key = NULL, *order = NULL;
EC_POINT *pub_key = NULL;
if (!eckey || !eckey->group) { if (!eckey || !eckey->group) {
ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER); ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
return 0; return 0;
} }
if (eckey->meth->keygen)
return eckey->meth->keygen(eckey);
ECerr(EC_F_EC_KEY_GENERATE_KEY, EC_R_OPERATION_NOT_SUPPORTED);
return 0;
}
int ossl_ec_key_gen(EC_KEY *eckey)
{
int ok = 0;
BN_CTX *ctx = NULL;
BIGNUM *priv_key = NULL, *order = NULL;
EC_POINT *pub_key = NULL;
if ((order = BN_new()) == NULL) if ((order = BN_new()) == NULL)
goto err; goto err;

3
crypto/ec/ec_kmeth.c
View File

@ -60,7 +60,8 @@
static const EC_KEY_METHOD openssl_ec_key_method = { static const EC_KEY_METHOD openssl_ec_key_method = {
"OpenSSL EC_KEY method", "OpenSSL EC_KEY method",
0 0,
ossl_ec_key_gen
}; };
const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method; const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;

3
crypto/ec/ec_lcl.h
View File

@ -560,6 +560,9 @@ const EC_METHOD *EC_GFp_nistz256_method(void);
struct ec_key_method_st { struct ec_key_method_st {
const char *name; const char *name;
int32_t flags; int32_t flags;
int (*keygen)(EC_KEY *key);
} /* EC_KEY_METHOD */ ; } /* EC_KEY_METHOD */ ;
#define EC_KEY_METHOD_DYNAMIC 1 #define EC_KEY_METHOD_DYNAMIC 1
int ossl_ec_key_gen(EC_KEY *eckey);

1
include/openssl/ec.h
View File

@ -1266,6 +1266,7 @@ void ERR_load_EC_strings(void);
# define EC_R_NOT_INITIALIZED 111 # define EC_R_NOT_INITIALIZED 111
# define EC_R_NO_FIELD_MOD 133 # define EC_R_NO_FIELD_MOD 133
# define EC_R_NO_PARAMETERS_SET 139 # define EC_R_NO_PARAMETERS_SET 139
# define EC_R_OPERATION_NOT_SUPPORTED 152
# define EC_R_PASSED_NULL_PARAMETER 134 # define EC_R_PASSED_NULL_PARAMETER 134
# define EC_R_PEER_KEY_ERROR 149 # define EC_R_PEER_KEY_ERROR 149
# define EC_R_PKPARAMETERS2GROUP_FAILURE 127 # define EC_R_PKPARAMETERS2GROUP_FAILURE 127