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@@ -15,7 +15,9 @@
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#include "prov/implementations.h"
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static OSSL_OP_keymgmt_importdomparams_fn dsa_importdomparams;
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+static OSSL_OP_keymgmt_exportdomparams_fn dsa_exportdomparams;
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static OSSL_OP_keymgmt_importkey_fn dsa_importkey;
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+static OSSL_OP_keymgmt_exportkey_fn dsa_exportkey;
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static int params_to_domparams(DSA *dsa, const OSSL_PARAM params[])
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{
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@@ -46,6 +48,28 @@ static int params_to_domparams(DSA *dsa, const OSSL_PARAM params[])
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return 0;
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}
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+static int domparams_to_params(DSA *dsa, OSSL_PARAM params[])
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+{
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+ OSSL_PARAM *p;
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+ const BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
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+
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+ if (dsa == NULL)
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+ return 0;
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+
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+ DSA_get0_pqg(dsa, &dsa_p, &dsa_q, &dsa_g);
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+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_FFC_P)) != NULL
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+ && !OSSL_PARAM_set_BN(p, dsa_p))
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+ return 0;
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+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_FFC_Q)) != NULL
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+ && !OSSL_PARAM_set_BN(p, dsa_q))
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+ return 0;
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+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_FFC_G)) != NULL
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+ && !OSSL_PARAM_set_BN(p, dsa_g))
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+ return 0;
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+
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+ return 1;
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+}
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+
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static int params_to_key(DSA *dsa, const OSSL_PARAM params[])
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{
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const OSSL_PARAM *param_priv_key, *param_pub_key;
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@@ -86,6 +110,27 @@ static int params_to_key(DSA *dsa, const OSSL_PARAM params[])
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return 0;
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}
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+static int key_to_params(DSA *dsa, OSSL_PARAM params[])
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+{
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+ OSSL_PARAM *p;
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+ const BIGNUM *priv_key = NULL, *pub_key = NULL;
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+
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+ if (dsa == NULL)
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+ return 0;
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+ if (!domparams_to_params(dsa, params))
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+ return 0;
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+
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+ DSA_get0_key(dsa, &pub_key, &priv_key);
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+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DSA_PRIV_KEY)) != NULL
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+ && !OSSL_PARAM_set_BN(p, priv_key))
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+ return 0;
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+ if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DSA_PUB_KEY)) != NULL
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+ && !OSSL_PARAM_set_BN(p, pub_key))
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+ return 0;
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+
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+ return 1;
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+}
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+
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static void *dsa_importdomparams(void *provctx, const OSSL_PARAM params[])
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{
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DSA *dsa;
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@@ -98,6 +143,13 @@ static void *dsa_importdomparams(void *provctx, const OSSL_PARAM params[])
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return dsa;
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}
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+static int dsa_exportdomparams(void *domparams, OSSL_PARAM params[])
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+{
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+ DSA *dsa = domparams;
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+
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+ return dsa != NULL && !domparams_to_params(dsa, params);
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+}
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+
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static void *dsa_importkey(void *provctx, const OSSL_PARAM params[])
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{
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DSA *dsa;
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@@ -110,14 +162,23 @@ static void *dsa_importkey(void *provctx, const OSSL_PARAM params[])
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return dsa;
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}
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+static int dsa_exportkey(void *key, OSSL_PARAM params[])
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+{
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+ DSA *dsa = key;
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+
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+ return dsa != NULL && !key_to_params(dsa, params);
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+}
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+
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const OSSL_DISPATCH dsa_keymgmt_functions[] = {
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/*
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* TODO(3.0) When implementing OSSL_FUNC_KEYMGMT_GENKEY, remember to also
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* implement OSSL_FUNC_KEYMGMT_EXPORTKEY.
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*/
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{ OSSL_FUNC_KEYMGMT_IMPORTDOMPARAMS, (void (*)(void))dsa_importdomparams },
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+ { OSSL_FUNC_KEYMGMT_EXPORTDOMPARAMS, (void (*)(void))dsa_exportdomparams },
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{ OSSL_FUNC_KEYMGMT_FREEDOMPARAMS, (void (*)(void))DSA_free },
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{ OSSL_FUNC_KEYMGMT_IMPORTKEY, (void (*)(void))dsa_importkey },
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+ { OSSL_FUNC_KEYMGMT_EXPORTKEY, (void (*)(void))dsa_exportkey },
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{ OSSL_FUNC_KEYMGMT_FREEKEY, (void (*)(void))DSA_free },
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{ 0, NULL }
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};
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