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-rw-r--r--lib/crypto/c_src/pkey.c1444
1 files changed, 1444 insertions, 0 deletions
diff --git a/lib/crypto/c_src/pkey.c b/lib/crypto/c_src/pkey.c
new file mode 100644
index 0000000000..4e76f817bc
--- /dev/null
+++ b/lib/crypto/c_src/pkey.c
@@ -0,0 +1,1444 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "pkey.h"
+#include "bn.h"
+#include "digest.h"
+#include "dss.h"
+#include "ec.h"
+#include "eddsa.h"
+#include "engine.h"
+#include "rsa.h"
+
+#define PKEY_BADARG -1
+#define PKEY_NOTSUP 0
+#define PKEY_OK 1
+
+typedef struct PKeyCryptOptions {
+ const EVP_MD *rsa_mgf1_md;
+ ErlNifBinary rsa_oaep_label;
+ const EVP_MD *rsa_oaep_md;
+ int rsa_padding;
+ const EVP_MD *signature_md;
+} PKeyCryptOptions;
+
+typedef struct PKeySignOptions {
+ const EVP_MD *rsa_mgf1_md;
+ int rsa_padding;
+ int rsa_pss_saltlen;
+} PKeySignOptions;
+
+
+static int get_pkey_digest_type(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM type,
+ const EVP_MD **md);
+static int get_pkey_sign_digest(ErlNifEnv *env, ERL_NIF_TERM algorithm,
+ ERL_NIF_TERM type, ERL_NIF_TERM data,
+ unsigned char *md_value, const EVP_MD **mdp,
+ unsigned char **tbsp, size_t *tbslenp);
+static int get_pkey_sign_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+ const EVP_MD *md, PKeySignOptions *opt);
+static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, EVP_PKEY **pkey);
+static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key,
+ EVP_PKEY **pkey);
+static int get_pkey_crypt_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+ PKeyCryptOptions *opt);
+static size_t size_of_RSA(EVP_PKEY *pkey);
+
+
+static int get_pkey_digest_type(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM type,
+ const EVP_MD **md)
+{
+ struct digest_type_t *digp = NULL;
+ *md = NULL;
+
+ if (type == atom_none && algorithm == atom_rsa)
+ return PKEY_OK;
+#ifdef HAVE_EDDSA
+ if (algorithm == atom_eddsa)
+ return PKEY_OK;
+#endif
+ if ((digp = get_digest_type(type)) == NULL)
+ return PKEY_BADARG;
+ if (digp->md.p == NULL)
+ return PKEY_NOTSUP;
+
+ *md = digp->md.p;
+ return PKEY_OK;
+}
+
+static int get_pkey_sign_digest(ErlNifEnv *env, ERL_NIF_TERM algorithm,
+ ERL_NIF_TERM type, ERL_NIF_TERM data,
+ unsigned char *md_value, const EVP_MD **mdp,
+ unsigned char **tbsp, size_t *tbslenp)
+{
+ int i, ret;
+ const ERL_NIF_TERM *tpl_terms;
+ int tpl_arity;
+ ErlNifBinary tbs_bin;
+ EVP_MD_CTX *mdctx = NULL;
+ const EVP_MD *md;
+ unsigned char *tbs;
+ size_t tbslen;
+ unsigned int tbsleni;
+
+ md = *mdp;
+ tbs = *tbsp;
+ tbslen = *tbslenp;
+
+ if ((i = get_pkey_digest_type(env, algorithm, type, &md)) != PKEY_OK)
+ return i;
+
+ if (enif_get_tuple(env, data, &tpl_arity, &tpl_terms)) {
+ if (tpl_arity != 2)
+ goto bad_arg;
+ if (tpl_terms[0] != atom_digest)
+ goto bad_arg;
+ if (!enif_inspect_binary(env, tpl_terms[1], &tbs_bin))
+ goto bad_arg;
+ if (tbs_bin.size > INT_MAX)
+ goto bad_arg;
+ if (md != NULL) {
+ if ((int)tbs_bin.size != EVP_MD_size(md))
+ goto bad_arg;
+ }
+
+ /* We have a digest (= hashed text) in tbs_bin */
+ tbs = tbs_bin.data;
+ tbslen = tbs_bin.size;
+ } else if (md == NULL) {
+ if (!enif_inspect_binary(env, data, &tbs_bin))
+ goto bad_arg;
+
+ /* md == NULL, that is no hashing because DigestType argument was atom_none */
+ tbs = tbs_bin.data;
+ tbslen = tbs_bin.size;
+ } else {
+ if (!enif_inspect_binary(env, data, &tbs_bin))
+ goto bad_arg;
+
+ /* We have the cleartext in tbs_bin and the hash algo info in md */
+ tbs = md_value;
+
+ if ((mdctx = EVP_MD_CTX_create()) == NULL)
+ goto err;
+
+ /* Looks well, now hash the plain text into a digest according to md */
+ if (EVP_DigestInit_ex(mdctx, md, NULL) != 1)
+ goto err;
+ if (EVP_DigestUpdate(mdctx, tbs_bin.data, tbs_bin.size) != 1)
+ goto err;
+ if (EVP_DigestFinal_ex(mdctx, tbs, &tbsleni) != 1)
+ goto err;
+
+ tbslen = (size_t)tbsleni;
+ }
+
+ *mdp = md;
+ *tbsp = tbs;
+ *tbslenp = tbslen;
+
+ ret = PKEY_OK;
+ goto done;
+
+ bad_arg:
+ err:
+ ret = PKEY_BADARG;
+
+ done:
+ if (mdctx)
+ EVP_MD_CTX_destroy(mdctx);
+ return ret;
+}
+
+static int get_pkey_sign_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+ const EVP_MD *md, PKeySignOptions *opt)
+{
+ ERL_NIF_TERM head, tail;
+ const ERL_NIF_TERM *tpl_terms;
+ int tpl_arity;
+ const EVP_MD *opt_md;
+
+ if (!enif_is_list(env, options))
+ goto bad_arg;
+
+ /* defaults */
+ if (algorithm == atom_rsa) {
+ opt->rsa_mgf1_md = NULL;
+ opt->rsa_padding = RSA_PKCS1_PADDING;
+ opt->rsa_pss_saltlen = -2;
+ }
+
+ if (enif_is_empty_list(env, options))
+ return PKEY_OK;
+
+ if (algorithm != atom_rsa)
+ goto bad_arg;
+
+ tail = options;
+ while (enif_get_list_cell(env, tail, &head, &tail)) {
+ if (!enif_get_tuple(env, head, &tpl_arity, &tpl_terms))
+ goto bad_arg;
+ if (tpl_arity != 2)
+ goto bad_arg;
+
+ if (tpl_terms[0] == atom_rsa_mgf1_md && enif_is_atom(env, tpl_terms[1])) {
+ int result;
+
+ result = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+ if (result != PKEY_OK)
+ return result;
+
+ opt->rsa_mgf1_md = opt_md;
+
+ } else if (tpl_terms[0] == atom_rsa_padding) {
+ if (tpl_terms[1] == atom_rsa_pkcs1_padding) {
+ opt->rsa_padding = RSA_PKCS1_PADDING;
+
+ } else if (tpl_terms[1] == atom_rsa_pkcs1_pss_padding) {
+#ifdef HAVE_RSA_PKCS1_PSS_PADDING
+ opt->rsa_padding = RSA_PKCS1_PSS_PADDING;
+ if (opt->rsa_mgf1_md == NULL)
+ opt->rsa_mgf1_md = md;
+#else
+ return PKEY_NOTSUP;
+#endif
+
+ } else if (tpl_terms[1] == atom_rsa_x931_padding) {
+ opt->rsa_padding = RSA_X931_PADDING;
+
+ } else if (tpl_terms[1] == atom_rsa_no_padding) {
+ opt->rsa_padding = RSA_NO_PADDING;
+
+ } else {
+ goto bad_arg;
+ }
+
+ } else if (tpl_terms[0] == atom_rsa_pss_saltlen) {
+ if (!enif_get_int(env, tpl_terms[1], &(opt->rsa_pss_saltlen)))
+ goto bad_arg;
+ if (opt->rsa_pss_saltlen < -2)
+ goto bad_arg;
+
+ } else {
+ goto bad_arg;
+ }
+ }
+
+ return PKEY_OK;
+
+ bad_arg:
+ return PKEY_BADARG;
+}
+
+static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, EVP_PKEY **pkey)
+{
+ EVP_PKEY *result = NULL;
+ RSA *rsa = NULL;
+ DSA *dsa = NULL;
+#if defined(HAVE_EC)
+ EC_KEY *ec = NULL;
+#endif
+ char *id = NULL;
+ char *password = NULL;
+
+ if (enif_is_map(env, key)) {
+#ifdef HAS_ENGINE_SUPPORT
+ /* Use key stored in engine */
+ ENGINE *e;
+
+ if (!get_engine_and_key_id(env, key, &id, &e))
+ goto err;
+
+ password = get_key_password(env, key);
+ result = ENGINE_load_private_key(e, id, NULL, password);
+
+#else
+ return PKEY_BADARG;
+#endif
+ } else if (algorithm == atom_rsa) {
+ if ((rsa = RSA_new()) == NULL)
+ goto err;
+
+ if (!get_rsa_private_key(env, key, rsa))
+ goto err;
+ if ((result = EVP_PKEY_new()) == NULL)
+ goto err;
+ if (EVP_PKEY_assign_RSA(result, rsa) != 1)
+ goto err;
+ /* On success, result owns rsa */
+ rsa = NULL;
+
+ } else if (algorithm == atom_ecdsa) {
+#if defined(HAVE_EC)
+ const ERL_NIF_TERM *tpl_terms;
+ int tpl_arity;
+
+ if (!enif_get_tuple(env, key, &tpl_arity, &tpl_terms))
+ goto err;
+ if (tpl_arity != 2)
+ goto err;
+ if (!enif_is_tuple(env, tpl_terms[0]))
+ goto err;
+ if (!enif_is_binary(env, tpl_terms[1]))
+ goto err;
+ if (!get_ec_key(env, tpl_terms[0], tpl_terms[1], atom_undefined, &ec))
+ goto err;
+
+ if ((result = EVP_PKEY_new()) == NULL)
+ goto err;
+ if (EVP_PKEY_assign_EC_KEY(result, ec) != 1)
+ goto err;
+ /* On success, result owns ec */
+ ec = NULL;
+
+#else
+ return PKEY_NOTSUP;
+#endif
+ } else if (algorithm == atom_eddsa) {
+#if defined(HAVE_EDDSA)
+ if (!get_eddsa_key(env, 0, key, &result))
+ goto err;
+#else
+ return PKEY_NOTSUP;
+#endif
+ } else if (algorithm == atom_dss) {
+ if ((dsa = DSA_new()) == NULL)
+ goto err;
+ if (!get_dss_private_key(env, key, dsa))
+ goto err;
+
+ if ((result = EVP_PKEY_new()) == NULL)
+ goto err;
+ if (EVP_PKEY_assign_DSA(result, dsa) != 1)
+ goto err;
+ /* On success, result owns dsa */
+ dsa = NULL;
+
+ } else {
+ return PKEY_BADARG;
+ }
+
+ goto done;
+
+ err:
+ if (result)
+ EVP_PKEY_free(result);
+ result = NULL;
+
+ done:
+ if (password)
+ enif_free(password);
+ if (id)
+ enif_free(id);
+ if (rsa)
+ RSA_free(rsa);
+ if (dsa)
+ DSA_free(dsa);
+#ifdef HAVE_EC
+ if (ec)
+ EC_KEY_free(ec);
+#endif
+
+ if (result == NULL) {
+ return PKEY_BADARG;
+ } else {
+ *pkey = result;
+ return PKEY_OK;
+ }
+}
+
+static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key,
+ EVP_PKEY **pkey)
+{
+ EVP_PKEY *result = NULL;
+ RSA *rsa = NULL;
+ DSA *dsa = NULL;
+#if defined(HAVE_EC)
+ EC_KEY *ec = NULL;
+#endif
+ char *id = NULL;
+ char *password = NULL;
+
+ if (enif_is_map(env, key)) {
+#ifdef HAS_ENGINE_SUPPORT
+ /* Use key stored in engine */
+ ENGINE *e;
+
+ if (!get_engine_and_key_id(env, key, &id, &e))
+ goto err;
+
+ password = get_key_password(env, key);
+ result = ENGINE_load_public_key(e, id, NULL, password);
+
+#else
+ return PKEY_BADARG;
+#endif
+ } else if (algorithm == atom_rsa) {
+ if ((rsa = RSA_new()) == NULL)
+ goto err;
+
+ if (!get_rsa_public_key(env, key, rsa))
+ goto err;
+
+ if ((result = EVP_PKEY_new()) == NULL)
+ goto err;
+ if (EVP_PKEY_assign_RSA(result, rsa) != 1)
+ goto err;
+ /* On success, result owns rsa */
+ rsa = NULL;
+
+ } else if (algorithm == atom_ecdsa) {
+#if defined(HAVE_EC)
+ const ERL_NIF_TERM *tpl_terms;
+ int tpl_arity;
+
+ if (!enif_get_tuple(env, key, &tpl_arity, &tpl_terms))
+ goto err;
+ if (tpl_arity != 2)
+ goto err;
+ if (!enif_is_tuple(env, tpl_terms[0]))
+ goto err;
+ if (!enif_is_binary(env, tpl_terms[1]))
+ goto err;
+ if (!get_ec_key(env, tpl_terms[0], atom_undefined, tpl_terms[1], &ec))
+ goto err;
+
+ if ((result = EVP_PKEY_new()) == NULL)
+ goto err;
+
+ if (EVP_PKEY_assign_EC_KEY(result, ec) != 1)
+ goto err;
+ /* On success, result owns ec */
+ ec = NULL;
+
+#else
+ return PKEY_NOTSUP;
+#endif
+ } else if (algorithm == atom_eddsa) {
+#if defined(HAVE_EDDSA)
+ if (!get_eddsa_key(env, 1, key, &result))
+ goto err;
+
+#else
+ return PKEY_NOTSUP;
+#endif
+ } else if (algorithm == atom_dss) {
+ if ((dsa = DSA_new()) == NULL)
+ goto err;
+
+ if (!get_dss_public_key(env, key, dsa))
+ goto err;
+
+ if ((result = EVP_PKEY_new()) == NULL)
+ goto err;
+ if (EVP_PKEY_assign_DSA(result, dsa) != 1)
+ goto err;
+ /* On success, result owns dsa */
+ dsa = NULL;
+
+ } else {
+ return PKEY_BADARG;
+ }
+
+ goto done;
+
+ err:
+ if (result)
+ EVP_PKEY_free(result);
+ result = NULL;
+
+ done:
+ if (password)
+ enif_free(password);
+ if (id)
+ enif_free(id);
+ if (rsa)
+ RSA_free(rsa);
+ if (dsa)
+ DSA_free(dsa);
+#ifdef HAVE_EC
+ if (ec)
+ EC_KEY_free(ec);
+#endif
+
+ if (result == NULL) {
+ return PKEY_BADARG;
+ } else {
+ *pkey = result;
+ return PKEY_OK;
+ }
+}
+
+ERL_NIF_TERM pkey_sign_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* (Algorithm, Type, Data|{digest,Digest}, Key|#{}, Options) */
+ int i;
+ int sig_bin_alloc = 0;
+ ERL_NIF_TERM ret;
+ const EVP_MD *md = NULL;
+ unsigned char md_value[EVP_MAX_MD_SIZE];
+ EVP_PKEY *pkey = NULL;
+#ifdef HAVE_EDDSA
+ EVP_MD_CTX *mdctx = NULL;
+#endif
+#ifdef HAS_EVP_PKEY_CTX
+ EVP_PKEY_CTX *ctx = NULL;
+ size_t siglen;
+#else
+ int len;
+ unsigned int siglen;
+#endif
+ PKeySignOptions sig_opt;
+ ErlNifBinary sig_bin; /* signature */
+ unsigned char *tbs; /* data to be signed */
+ size_t tbslen;
+ RSA *rsa = NULL;
+ DSA *dsa = NULL;
+#if defined(HAVE_EC)
+ EC_KEY *ec = NULL;
+#endif
+/*char buf[1024];
+enif_get_atom(env,argv[0],buf,1024,ERL_NIF_LATIN1); printf("algo=%s ",buf);
+enif_get_atom(env,argv[1],buf,1024,ERL_NIF_LATIN1); printf("hash=%s ",buf);
+printf("\r\n");
+*/
+
+#ifndef HAS_ENGINE_SUPPORT
+ if (enif_is_map(env, argv[3]))
+ return atom_notsup;
+#endif
+
+ i = get_pkey_sign_digest(env, argv[0], argv[1], argv[2], md_value, &md, &tbs, &tbslen);
+ switch (i) {
+ case PKEY_OK:
+ break;
+ case PKEY_NOTSUP:
+ goto notsup;
+ default:
+ goto bad_arg;
+ }
+
+ i = get_pkey_sign_options(env, argv[0], argv[4], md, &sig_opt);
+ switch (i) {
+ case PKEY_OK:
+ break;
+ case PKEY_NOTSUP:
+ goto notsup;
+ default:
+ goto bad_arg;
+ }
+
+ if (get_pkey_private_key(env, argv[0], argv[3], &pkey) != PKEY_OK)
+ goto bad_arg;
+
+#ifdef HAS_EVP_PKEY_CTX
+ if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL)
+ goto err;
+
+ if (argv[0] != atom_eddsa) {
+ if (EVP_PKEY_sign_init(ctx) != 1)
+ goto err;
+ if (md != NULL) {
+ if (EVP_PKEY_CTX_set_signature_md(ctx, md) != 1)
+ goto err;
+ }
+ }
+
+ if (argv[0] == atom_rsa) {
+ if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) != 1)
+ goto err;
+# ifdef HAVE_RSA_PKCS1_PSS_PADDING
+ if (sig_opt.rsa_padding == RSA_PKCS1_PSS_PADDING) {
+ if (sig_opt.rsa_mgf1_md != NULL) {
+# ifdef HAVE_RSA_MGF1_MD
+ if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, sig_opt.rsa_mgf1_md) != 1)
+ goto err;
+# else
+ goto notsup;
+# endif
+ }
+ if (sig_opt.rsa_pss_saltlen > -2) {
+ if (EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) != 1)
+ goto err;
+ }
+ }
+#endif
+ }
+
+ if (argv[0] == atom_eddsa) {
+#ifdef HAVE_EDDSA
+ if ((mdctx = EVP_MD_CTX_new()) == NULL)
+ goto err;
+
+ if (EVP_DigestSignInit(mdctx, NULL, NULL, NULL, pkey) != 1)
+ goto err;
+ if (EVP_DigestSign(mdctx, NULL, &siglen, tbs, tbslen) != 1)
+ goto err;
+ if (!enif_alloc_binary(siglen, &sig_bin))
+ goto err;
+ sig_bin_alloc = 1;
+
+ if (EVP_DigestSign(mdctx, sig_bin.data, &siglen, tbs, tbslen) != 1)
+ goto bad_key;
+#else
+ goto bad_arg;
+#endif
+ } else {
+ if (EVP_PKEY_sign(ctx, NULL, &siglen, tbs, tbslen) != 1)
+ goto err;
+ if (!enif_alloc_binary(siglen, &sig_bin))
+ goto err;
+ sig_bin_alloc = 1;
+
+ if (md != NULL) {
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md));
+ }
+ if (EVP_PKEY_sign(ctx, sig_bin.data, &siglen, tbs, tbslen) != 1)
+ goto bad_key;
+ }
+#else
+/*printf("Old interface\r\n");
+ */
+ if (argv[0] == atom_rsa) {
+ if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+ goto err;
+ if ((len = RSA_size(rsa)) < 0)
+ goto err;
+ if (!enif_alloc_binary((size_t)len, &sig_bin))
+ goto err;
+ sig_bin_alloc = 1;
+
+ if ((len = EVP_MD_size(md)) < 0)
+ goto err;
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
+
+ if (RSA_sign(md->type, tbs, (unsigned int)len, sig_bin.data, &siglen, rsa) != 1)
+ goto bad_key;
+ } else if (argv[0] == atom_dss) {
+ if ((dsa = EVP_PKEY_get1_DSA(pkey)) == NULL)
+ goto err;
+ if ((len = DSA_size(dsa)) < 0)
+ goto err;
+ if (!enif_alloc_binary((size_t)len, &sig_bin))
+ goto err;
+ sig_bin_alloc = 1;
+
+ if ((len = EVP_MD_size(md)) < 0)
+ goto err;
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
+
+ if (DSA_sign(md->type, tbs, len, sig_bin.data, &siglen, dsa) != 1)
+ goto bad_key;
+ } else if (argv[0] == atom_ecdsa) {
+#if defined(HAVE_EC)
+ if ((ec = EVP_PKEY_get1_EC_KEY(pkey)) == NULL)
+ goto err;
+ if ((len = ECDSA_size(ec)) < 0)
+ goto err;
+ if (!enif_alloc_binary((size_t)len, &sig_bin))
+ goto err;
+ sig_bin_alloc = 1;
+
+ len = EVP_MD_size(md);
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len);
+
+ if (ECDSA_sign(md->type, tbs, len, sig_bin.data, &siglen, ec) != 1)
+ goto bad_key;
+#else
+ goto notsup;
+#endif
+ } else {
+ goto bad_arg;
+ }
+#endif
+
+ ERL_VALGRIND_MAKE_MEM_DEFINED(sig_bin.data, siglen);
+ if (siglen != sig_bin.size) {
+ if (!enif_realloc_binary(&sig_bin, siglen))
+ goto err;
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(sig_bin.data, siglen);
+ }
+ ret = enif_make_binary(env, &sig_bin);
+ sig_bin_alloc = 0;
+ goto done;
+
+ bad_key:
+ ret = atom_error;
+ goto done;
+
+ notsup:
+ ret = atom_notsup;
+ goto done;
+
+ bad_arg:
+ err:
+ ret = enif_make_badarg(env);
+ goto done;
+
+ done:
+ if (sig_bin_alloc)
+ enif_release_binary(&sig_bin);
+ if (rsa)
+ RSA_free(rsa);
+ if (dsa)
+ DSA_free(dsa);
+#ifdef HAVE_EC
+ if (ec)
+ EC_KEY_free(ec);
+#endif
+#ifdef HAS_EVP_PKEY_CTX
+ if (ctx)
+ EVP_PKEY_CTX_free(ctx);
+#endif
+ if (pkey)
+ EVP_PKEY_free(pkey);
+
+ return ret;
+}
+
+ERL_NIF_TERM pkey_verify_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* (Algorithm, Type, Data|{digest,Digest}, Signature, Key, Options) */
+ int i;
+ int result;
+ const EVP_MD *md = NULL;
+ unsigned char md_value[EVP_MAX_MD_SIZE];
+ EVP_PKEY *pkey = NULL;
+#ifdef HAS_EVP_PKEY_CTX
+ EVP_PKEY_CTX *ctx = NULL;
+#else
+#endif
+ PKeySignOptions sig_opt;
+ ErlNifBinary sig_bin; /* signature */
+ unsigned char *tbs; /* data to be signed */
+ size_t tbslen;
+ ERL_NIF_TERM ret;
+ RSA *rsa = NULL;
+ DSA *dsa = NULL;
+#ifdef HAVE_EC
+ EC_KEY *ec = NULL;
+#endif
+#ifdef HAVE_EDDSA
+ EVP_MD_CTX *mdctx = NULL;
+#endif
+
+#ifndef HAS_ENGINE_SUPPORT
+ if (enif_is_map(env, argv[4]))
+ return atom_notsup;
+#endif
+
+ if (!enif_inspect_binary(env, argv[3], &sig_bin))
+ return enif_make_badarg(env);
+
+ i = get_pkey_sign_digest(env, argv[0], argv[1], argv[2], md_value, &md, &tbs, &tbslen);
+ switch (i) {
+ case PKEY_OK:
+ break;
+ case PKEY_NOTSUP:
+ goto notsup;
+ default:
+ goto bad_arg;
+ }
+
+ i = get_pkey_sign_options(env, argv[0], argv[5], md, &sig_opt);
+ switch (i) {
+ case PKEY_OK:
+ break;
+ case PKEY_NOTSUP:
+ goto notsup;
+ default:
+ goto bad_arg;
+ }
+
+ if (get_pkey_public_key(env, argv[0], argv[4], &pkey) != PKEY_OK) {
+ goto bad_arg;
+ }
+
+#ifdef HAS_EVP_PKEY_CTX
+/* printf("EVP interface\r\n");
+ */
+ if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL)
+ goto err;
+
+ if (argv[0] != atom_eddsa) {
+ if (EVP_PKEY_verify_init(ctx) != 1)
+ goto err;
+ if (md != NULL) {
+ if (EVP_PKEY_CTX_set_signature_md(ctx, md) != 1)
+ goto err;
+ }
+ }
+
+ if (argv[0] == atom_rsa) {
+ if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) != 1)
+ goto err;
+ if (sig_opt.rsa_padding == RSA_PKCS1_PSS_PADDING) {
+ if (sig_opt.rsa_mgf1_md != NULL) {
+# ifdef HAVE_RSA_MGF1_MD
+ if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, sig_opt.rsa_mgf1_md) != 1)
+ goto err;
+# else
+ goto notsup;
+# endif
+ }
+ if (sig_opt.rsa_pss_saltlen > -2) {
+ if (EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) != 1)
+ goto err;
+ }
+ }
+ }
+
+ if (argv[0] == atom_eddsa) {
+#ifdef HAVE_EDDSA
+ if ((mdctx = EVP_MD_CTX_new()) == NULL)
+ goto err;
+
+ if (EVP_DigestVerifyInit(mdctx, NULL, NULL, NULL, pkey) != 1)
+ goto err;
+
+ result = EVP_DigestVerify(mdctx, sig_bin.data, sig_bin.size, tbs, tbslen);
+#else
+ goto bad_arg;
+#endif
+ } else {
+ if (md != NULL) {
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md));
+ }
+ result = EVP_PKEY_verify(ctx, sig_bin.data, sig_bin.size, tbs, tbslen);
+ }
+#else
+/*printf("Old interface\r\n");
+*/
+ if (tbslen > INT_MAX)
+ goto bad_arg;
+ if (sig_bin.size > INT_MAX)
+ goto bad_arg;
+ if (argv[0] == atom_rsa) {
+ if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+ goto err;
+ result = RSA_verify(md->type, tbs, (unsigned int)tbslen, sig_bin.data, (unsigned int)sig_bin.size, rsa);
+ } else if (argv[0] == atom_dss) {
+ if ((dsa = EVP_PKEY_get1_DSA(pkey)) == NULL)
+ goto err;
+ result = DSA_verify(0, tbs, (int)tbslen, sig_bin.data, (int)sig_bin.size, dsa);
+ } else if (argv[0] == atom_ecdsa) {
+#if defined(HAVE_EC)
+ if ((ec = EVP_PKEY_get1_EC_KEY(pkey)) == NULL)
+ goto err;
+ result = ECDSA_verify(EVP_MD_type(md), tbs, (int)tbslen, sig_bin.data, (int)sig_bin.size, ec);
+#else
+ goto notsup;
+#endif
+ } else {
+ goto bad_arg;
+ }
+#endif
+
+ ret = (result == 1 ? atom_true : atom_false);
+ goto done;
+
+ bad_arg:
+ err:
+ ret = enif_make_badarg(env);
+ goto done;
+
+ notsup:
+ ret = atom_notsup;
+
+ done:
+#ifdef HAS_EVP_PKEY_CTX
+ if (ctx)
+ EVP_PKEY_CTX_free(ctx);
+#endif
+#ifdef HAVE_EDDSA
+ if (mdctx)
+ EVP_MD_CTX_free(mdctx);
+#endif
+ if (pkey)
+ EVP_PKEY_free(pkey);
+ if (rsa)
+ RSA_free(rsa);
+ if (dsa)
+ DSA_free(dsa);
+#ifdef HAVE_EC
+ if (ec)
+ EC_KEY_free(ec);
+#endif
+
+ return ret;
+}
+
+static int get_pkey_crypt_options(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM options,
+ PKeyCryptOptions *opt)
+{
+ ERL_NIF_TERM head, tail;
+ const ERL_NIF_TERM *tpl_terms;
+ int tpl_arity;
+ const EVP_MD *opt_md;
+
+ if (!enif_is_list(env, options))
+ goto bad_arg;
+
+ /* defaults */
+ if (algorithm == atom_rsa) {
+ opt->rsa_mgf1_md = NULL;
+ opt->rsa_oaep_label.data = NULL;
+ opt->rsa_oaep_label.size = 0;
+ opt->rsa_oaep_md = NULL;
+ opt->rsa_padding = RSA_PKCS1_PADDING;
+ opt->signature_md = NULL;
+ }
+
+ if (enif_is_empty_list(env, options))
+ return PKEY_OK;
+
+ if (algorithm != atom_rsa)
+ goto bad_arg;
+
+ tail = options;
+ while (enif_get_list_cell(env, tail, &head, &tail)) {
+ if (!enif_get_tuple(env, head, &tpl_arity, &tpl_terms))
+ goto bad_arg;
+ if (tpl_arity != 2)
+ goto bad_arg;
+
+ if (tpl_terms[0] == atom_rsa_padding
+ || tpl_terms[0] == atom_rsa_pad /* Compatibility */
+ ) {
+ if (tpl_terms[1] == atom_rsa_pkcs1_padding) {
+ opt->rsa_padding = RSA_PKCS1_PADDING;
+
+#ifdef HAVE_RSA_OAEP_PADDING
+ } else if (tpl_terms[1] == atom_rsa_pkcs1_oaep_padding) {
+ opt->rsa_padding = RSA_PKCS1_OAEP_PADDING;
+#endif
+
+#ifdef HAVE_RSA_SSLV23_PADDING
+ } else if (tpl_terms[1] == atom_rsa_sslv23_padding) {
+ opt->rsa_padding = RSA_SSLV23_PADDING;
+#endif
+
+ } else if (tpl_terms[1] == atom_rsa_x931_padding) {
+ opt->rsa_padding = RSA_X931_PADDING;
+
+ } else if (tpl_terms[1] == atom_rsa_no_padding) {
+ opt->rsa_padding = RSA_NO_PADDING;
+
+ } else {
+ goto bad_arg;
+ }
+
+ } else if (tpl_terms[0] == atom_signature_md && enif_is_atom(env, tpl_terms[1])) {
+ int i;
+ i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+ if (i != PKEY_OK) {
+ return i;
+ }
+ opt->signature_md = opt_md;
+
+ } else if (tpl_terms[0] == atom_rsa_mgf1_md && enif_is_atom(env, tpl_terms[1])) {
+ int i;
+#ifndef HAVE_RSA_MGF1_MD
+ if (tpl_terms[1] != atom_sha)
+ return PKEY_NOTSUP;
+#endif
+ i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+ if (i != PKEY_OK) {
+ return i;
+ }
+ opt->rsa_mgf1_md = opt_md;
+
+ } else if (tpl_terms[0] == atom_rsa_oaep_label
+ && enif_inspect_binary(env, tpl_terms[1], &(opt->rsa_oaep_label))) {
+#ifdef HAVE_RSA_OAEP_MD
+ continue;
+#else
+ return PKEY_NOTSUP;
+#endif
+
+ } else if (tpl_terms[0] == atom_rsa_oaep_md && enif_is_atom(env, tpl_terms[1])) {
+ int i;
+#ifndef HAVE_RSA_OAEP_MD
+ if (tpl_terms[1] != atom_sha)
+ return PKEY_NOTSUP;
+#endif
+ i = get_pkey_digest_type(env, algorithm, tpl_terms[1], &opt_md);
+ if (i != PKEY_OK) {
+ return i;
+ }
+ opt->rsa_oaep_md = opt_md;
+
+ } else {
+ goto bad_arg;
+ }
+ }
+
+ return PKEY_OK;
+
+ bad_arg:
+ return PKEY_BADARG;
+}
+
+static size_t size_of_RSA(EVP_PKEY *pkey) {
+ int ret = 0;
+ RSA *rsa = NULL;
+
+ if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+ goto err;
+ ret = RSA_size(rsa);
+
+ err:
+ if (rsa)
+ RSA_free(rsa);
+
+ return (ret < 0) ? 0 : (size_t)ret;
+}
+
+ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* (Algorithm, Data, PublKey=[E,N]|[E,N,D]|[E,N,D,P1,P2,E1,E2,C], Options, IsPrivate, IsEncrypt) */
+ ERL_NIF_TERM ret;
+ int i;
+ int result = 0;
+ int tmp_bin_alloc = 0;
+ int out_bin_alloc = 0;
+ EVP_PKEY *pkey = NULL;
+#ifdef HAS_EVP_PKEY_CTX
+ EVP_PKEY_CTX *ctx = NULL;
+#else
+ int len;
+ RSA *rsa = NULL;
+#endif
+ PKeyCryptOptions crypt_opt;
+ ErlNifBinary in_bin, out_bin, tmp_bin;
+ size_t outlen;
+#ifdef HAVE_RSA_SSLV23_PADDING
+ size_t tmplen;
+#endif
+ int is_private, is_encrypt;
+ int algo_init = 0;
+ unsigned char *label_copy = NULL;
+
+ ASSERT(argc == 6);
+
+ is_private = (argv[4] == atom_true);
+ is_encrypt = (argv[5] == atom_true);
+
+/* char algo[1024]; */
+
+#ifndef HAS_ENGINE_SUPPORT
+ if (enif_is_map(env, argv[2]))
+ return atom_notsup;
+#endif
+
+ if (!enif_inspect_binary(env, argv[1], &in_bin))
+ goto bad_arg;
+
+ i = get_pkey_crypt_options(env, argv[0], argv[3], &crypt_opt);
+ switch (i) {
+ case PKEY_OK:
+ break;
+ case PKEY_NOTSUP:
+ goto notsup;
+ default:
+ goto bad_arg;
+ }
+
+ if (is_private) {
+ if (get_pkey_private_key(env, argv[0], argv[2], &pkey) != PKEY_OK)
+ goto bad_arg;
+ } else {
+ if (get_pkey_public_key(env, argv[0], argv[2], &pkey) != PKEY_OK)
+ goto bad_arg;
+ }
+
+#ifdef HAS_EVP_PKEY_CTX
+ if ((ctx = EVP_PKEY_CTX_new(pkey, NULL)) == NULL)
+ goto err;
+
+/* enif_get_atom(env,argv[0],algo,1024,ERL_NIF_LATIN1); */
+
+ if (is_private) {
+ if (is_encrypt) {
+ /* private encrypt */
+ if ((algo_init = EVP_PKEY_sign_init(ctx)) != 1)
+ goto bad_arg;
+ } else {
+ /* private decrypt */
+ if ((algo_init = EVP_PKEY_decrypt_init(ctx)) != 1)
+ goto bad_arg;
+ }
+ } else {
+ if (is_encrypt) {
+ /* public encrypt */
+ if ((algo_init = EVP_PKEY_encrypt_init(ctx)) != 1)
+ goto bad_arg;
+ } else {
+ /* public decrypt */
+ if ((algo_init = EVP_PKEY_verify_recover_init(ctx)) != 1)
+ goto bad_arg;
+ }
+ }
+
+ if (argv[0] == atom_rsa) {
+ if (crypt_opt.signature_md != NULL) {
+ if (EVP_PKEY_CTX_set_signature_md(ctx, crypt_opt.signature_md) != 1)
+ goto bad_arg;
+ }
+
+#ifdef HAVE_RSA_SSLV23_PADDING
+ if (crypt_opt.rsa_padding == RSA_SSLV23_PADDING) {
+ if (is_encrypt) {
+ tmplen = size_of_RSA(pkey);
+ if (tmplen < 1 || tmplen > INT_MAX)
+ goto err;
+ if (!enif_alloc_binary(tmplen, &tmp_bin))
+ goto err;
+ tmp_bin_alloc = 1;
+ if (in_bin.size > INT_MAX)
+ goto err;
+ if (!RSA_padding_add_SSLv23(tmp_bin.data, (int)tmplen, in_bin.data, (int)in_bin.size))
+ goto err;
+ in_bin = tmp_bin;
+ }
+ if (EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_NO_PADDING) != 1)
+ goto err;
+ } else
+#endif
+ {
+ if (EVP_PKEY_CTX_set_rsa_padding(ctx, crypt_opt.rsa_padding) != 1)
+ goto err;
+ }
+
+#ifdef HAVE_RSA_OAEP_MD
+ if (crypt_opt.rsa_padding == RSA_PKCS1_OAEP_PADDING) {
+ if (crypt_opt.rsa_oaep_md != NULL) {
+ if (EVP_PKEY_CTX_set_rsa_oaep_md(ctx, crypt_opt.rsa_oaep_md) != 1)
+ goto err;
+ }
+
+ if (crypt_opt.rsa_mgf1_md != NULL) {
+ if (EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, crypt_opt.rsa_mgf1_md) != 1)
+ goto err;
+ }
+
+ if (crypt_opt.rsa_oaep_label.data != NULL && crypt_opt.rsa_oaep_label.size > 0) {
+ if (crypt_opt.rsa_oaep_label.size > INT_MAX)
+ goto err;
+ if ((label_copy = OPENSSL_malloc(crypt_opt.rsa_oaep_label.size)) == NULL)
+ goto err;
+
+ memcpy((void *)(label_copy), (const void *)(crypt_opt.rsa_oaep_label.data),
+ crypt_opt.rsa_oaep_label.size);
+
+ if (EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, label_copy,
+ (int)crypt_opt.rsa_oaep_label.size) != 1)
+ goto err;
+ /* On success, label_copy is owned by ctx */
+ label_copy = NULL;
+ }
+ }
+#endif
+ }
+
+ if (is_private) {
+ if (is_encrypt) {
+ /* private_encrypt */
+ result = EVP_PKEY_sign(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+ } else {
+ /* private_decrypt */
+ result = EVP_PKEY_decrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+ }
+ } else {
+ if (is_encrypt) {
+ /* public_encrypt */
+ result = EVP_PKEY_encrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+ } else {
+ /* public_decrypt */
+ result = EVP_PKEY_verify_recover(ctx, NULL, &outlen, in_bin.data, in_bin.size);
+ }
+ }
+ /* fprintf(stderr,"i = %d %s:%d\r\n", i, __FILE__, __LINE__); */
+
+ if (result != 1)
+ goto err;
+
+ if (!enif_alloc_binary(outlen, &out_bin))
+ goto err;
+ out_bin_alloc = 1;
+
+ if (is_private) {
+ if (is_encrypt) {
+ /* private_encrypt */
+ result = EVP_PKEY_sign(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+ } else {
+ /* private_decrypt */
+ result = EVP_PKEY_decrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+ }
+ } else {
+ if (is_encrypt) {
+ /* public_encrypt */
+ result = EVP_PKEY_encrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+ } else {
+ /* public_decrypt */
+ result = EVP_PKEY_verify_recover(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size);
+ }
+ }
+
+#else
+ /* Non-EVP cryptolib. Only support RSA */
+
+ if (argv[0] != atom_rsa) {
+ algo_init = -2; /* exitcode: notsup */
+ goto bad_arg;
+ }
+
+ if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+ goto err;
+ if ((len = RSA_size(rsa)) < 0)
+ goto err;
+ if (!enif_alloc_binary((size_t)len, &out_bin))
+ goto err;
+ out_bin_alloc = 1;
+
+ if (in_bin.size > INT_MAX)
+ goto err;
+ if (is_private) {
+ if (is_encrypt) {
+ /* non-evp rsa private encrypt */
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size);
+ result = RSA_private_encrypt((int)in_bin.size, in_bin.data,
+ out_bin.data, rsa, crypt_opt.rsa_padding);
+ if (result > 0) {
+ ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+ }
+ } else {
+ /* non-evp rsa private decrypt */
+ result = RSA_private_decrypt((int)in_bin.size, in_bin.data,
+ out_bin.data, rsa, crypt_opt.rsa_padding);
+ if (result > 0) {
+ ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+ if (!enif_realloc_binary(&out_bin, (size_t)result))
+ goto err;
+ }
+ }
+ } else {
+ if (is_encrypt) {
+ /* non-evp rsa public encrypt */
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size);
+ result = RSA_public_encrypt((int)in_bin.size, in_bin.data,
+ out_bin.data, rsa, crypt_opt.rsa_padding);
+ if (result > 0) {
+ ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+ }
+ } else {
+ /* non-evp rsa public decrypt */
+ result = RSA_public_decrypt((int)in_bin.size, in_bin.data,
+ out_bin.data, rsa, crypt_opt.rsa_padding);
+ if (result > 0) {
+ ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, result);
+ if (!enif_realloc_binary(&out_bin, (size_t)result))
+ goto err;
+ }
+ }
+ }
+
+ outlen = (size_t)result;
+#endif
+
+ if ((result > 0) && argv[0] == atom_rsa && !is_encrypt) {
+#ifdef HAVE_RSA_SSLV23_PADDING
+ if (crypt_opt.rsa_padding == RSA_SSLV23_PADDING) {
+ unsigned char *p;
+
+ tmplen = size_of_RSA(pkey);
+ if (tmplen < 1 || tmplen > INT_MAX)
+ goto err;
+ if (!enif_alloc_binary(tmplen, &tmp_bin))
+ goto err;
+ tmp_bin_alloc = 1;
+ if (out_bin.size > INT_MAX)
+ goto err;
+
+ p = out_bin.data;
+ p++;
+
+ result = RSA_padding_check_SSLv23(tmp_bin.data, (int)tmplen, p, (int)out_bin.size - 1, (int)tmplen);
+ if (result >= 0) {
+ outlen = (size_t)result;
+ in_bin = out_bin;
+ out_bin = tmp_bin;
+ tmp_bin = in_bin;
+ result = 1;
+ }
+ }
+#endif
+ }
+
+ if (result > 0) {
+ ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, outlen);
+ if (outlen != out_bin.size) {
+ if (!enif_realloc_binary(&out_bin, outlen))
+ goto err;
+ ERL_VALGRIND_ASSERT_MEM_DEFINED(out_bin.data, outlen);
+ }
+ ret = enif_make_binary(env, &out_bin);
+ out_bin_alloc = 0;
+ } else {
+ ret = atom_error;
+ }
+ goto done;
+
+ notsup:
+ ret = atom_notsup;
+ goto done;
+
+ bad_arg:
+ err:
+ if (algo_init == -2)
+ ret = atom_notsup;
+ else
+ ret = enif_make_badarg(env);
+
+ done:
+ if (out_bin_alloc)
+ enif_release_binary(&out_bin);
+ if (tmp_bin_alloc)
+ enif_release_binary(&tmp_bin);
+
+#ifdef HAS_EVP_PKEY_CTX
+ if (ctx)
+ EVP_PKEY_CTX_free(ctx);
+#else
+ if (rsa)
+ RSA_free(rsa);
+#endif
+ if (pkey)
+ EVP_PKEY_free(pkey);
+
+ if (label_copy)
+ OPENSSL_free(label_copy);
+
+ return ret;
+}
+
+ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{ /* (Algorithm, PrivKey | KeyMap) */
+ ERL_NIF_TERM ret;
+ EVP_PKEY *pkey = NULL;
+ RSA *rsa = NULL;
+ DSA *dsa = NULL;
+ ERL_NIF_TERM result[8];
+
+ ASSERT(argc == 2);
+
+ if (get_pkey_private_key(env, argv[0], argv[1], &pkey) != PKEY_OK)
+ goto bad_arg;
+
+ if (argv[0] == atom_rsa) {
+ const BIGNUM *n = NULL, *e = NULL, *d = NULL;
+
+ if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL)
+ goto err;
+
+ RSA_get0_key(rsa, &n, &e, &d);
+
+ // Exponent E
+ if ((result[0] = bin_from_bn(env, e)) == atom_error)
+ goto err;
+ // Modulus N = p*q
+ if ((result[1] = bin_from_bn(env, n)) == atom_error)
+ goto err;
+
+ ret = enif_make_list_from_array(env, result, 2);
+
+ } else if (argv[0] == atom_dss) {
+ const BIGNUM *p = NULL, *q = NULL, *g = NULL, *pub_key = NULL;
+
+ if ((dsa = EVP_PKEY_get1_DSA(pkey)) == NULL)
+ goto err;
+
+ DSA_get0_pqg(dsa, &p, &q, &g);
+ DSA_get0_key(dsa, &pub_key, NULL);
+
+ if ((result[0] = bin_from_bn(env, p)) == atom_error)
+ goto err;
+ if ((result[1] = bin_from_bn(env, q)) == atom_error)
+ goto err;
+ if ((result[2] = bin_from_bn(env, g)) == atom_error)
+ goto err;
+ if ((result[3] = bin_from_bn(env, pub_key)) == atom_error)
+ goto err;
+
+ ret = enif_make_list_from_array(env, result, 4);
+
+ } else if (argv[0] == atom_ecdsa) {
+#if defined(HAVE_EC)
+ /* not yet implemented
+ EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey);
+ if (ec) {
+ / * Example of result:
+ {
+ Curve = {Field, Prime, Point, Order, CoFactor} =
+ {
+ Field = {prime_field,<<255,...,255>>},
+ Prime = {<<255,...,252>>,
+ <<90,...,75>>,
+ <<196,...,144>>
+ },
+ Point = <<4,...,245>>,
+ Order = <<255,...,81>>,
+ CoFactor = <<1>>
+ },
+ Key = <<151,...,62>>
+ }
+ or
+ {
+ Curve =
+ {characteristic_two_field,
+ M,
+ Basis = {tpbasis, _}
+ | {ppbasis, k1, k2, k3}
+ },
+ Key
+ }
+ * /
+ EVP_PKEY_free(pkey);
+ return enif_make_list_from_array(env, ..., ...);
+ */
+#endif
+ goto bad_arg;
+ } else {
+ goto bad_arg;
+ }
+
+ goto done;
+
+ bad_arg:
+ err:
+ ret = enif_make_badarg(env);
+
+ done:
+ if (rsa)
+ RSA_free(rsa);
+ if (dsa)
+ DSA_free(dsa);
+ if (pkey)
+ EVP_PKEY_free(pkey);
+
+ return ret;
+}