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Add nonce generator interface

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Nonce generators (nonce_gen_t) can be used to get or allocate nonces.

Users can request nonce generators from the crypto factory while nonce
plugins register/remove themselves to/from the crypto factory.
This commit is contained in:
Adrian-Ken Rueegsegger
2012-05-18 08:15:40 +02:00
committed by Tobias Brunner
parent 80c5b17d1a
commit e2fc09c186
6 changed files with 163 additions and 0 deletions
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src/libstrongswan/plugins/plugin_feature.c
+16
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@@ -29,6 +29,7 @@ ENUM(plugin_feature_names, FEATURE_NONE, FEATURE_CUSTOM,
"PRF",
"DH",
"RNG",
"NONCE_GEN",
"PRIVKEY",
"PRIVKEY_GEN",
"PRIVKEY_SIGN",
@@ -74,6 +75,8 @@ bool plugin_feature_matches(plugin_feature_t *a, plugin_feature_t *b)
return a->arg.dh_group == b->arg.dh_group;
case FEATURE_RNG:
return a->arg.rng_quality <= b->arg.rng_quality;
case FEATURE_NONCE_GEN:
return TRUE;
case FEATURE_PRIVKEY:
case FEATURE_PRIVKEY_GEN:
case FEATURE_PUBKEY:
@@ -172,6 +175,12 @@ char* plugin_feature_get_string(plugin_feature_t *feature)
return str;
}
break;
case FEATURE_NONCE_GEN:
if (asprintf(&str, "%N", plugin_feature_names, feature->type) > 0)
{
return str;
}
break;
case FEATURE_PRIVKEY:
case FEATURE_PRIVKEY_GEN:
case FEATURE_PUBKEY:
@@ -301,6 +310,10 @@ bool plugin_feature_load(plugin_t *plugin, plugin_feature_t *feature,
lib->crypto->add_rng(lib->crypto, feature->arg.rng_quality,
name, reg->arg.reg.f);
break;
case FEATURE_NONCE_GEN:
lib->crypto->add_nonce_gen(lib->crypto,
name, reg->arg.reg.f);
break;
case FEATURE_PRIVKEY:
case FEATURE_PRIVKEY_GEN:
lib->creds->add_builder(lib->creds, CRED_PRIVATE_KEY,
@@ -372,6 +385,9 @@ bool plugin_feature_unload(plugin_t *plugin, plugin_feature_t *feature,
case FEATURE_RNG:
lib->crypto->remove_rng(lib->crypto, reg->arg.reg.f);
break;
case FEATURE_NONCE_GEN:
lib->crypto->remove_nonce_gen(lib->crypto, reg->arg.reg.f);
break;
case FEATURE_PRIVKEY:
case FEATURE_PRIVKEY_GEN:
lib->creds->remove_builder(lib->creds, reg->arg.reg.f);