diff options
Diffstat (limited to 'lib/crypto/c_src/crypto.c')
| -rw-r--r-- | lib/crypto/c_src/crypto.c | 1142 |
1 files changed, 1 insertions, 1141 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c index af63519fbc..b8525ee617 100644 --- a/lib/crypto/c_src/crypto.c +++ b/lib/crypto/c_src/crypto.c @@ -44,6 +44,7 @@ #include "hmac.h" #include "info.h" #include "math.h" +#include "pkey.h" #include "poly1305.h" #include "rand.h" #include "rc4.h" @@ -59,10 +60,6 @@ static void unload(ErlNifEnv* env, void* priv_data); static ERL_NIF_TERM info_fips(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM enable_fips_mode(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM algorithms(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM pkey_sign_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM pkey_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM pkey_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); /* helpers */ static void init_algorithms_types(ErlNifEnv*); @@ -657,1140 +654,3 @@ static ERL_NIF_TERM enable_fips_mode(ErlNifEnv* env, int argc, const ERL_NIF_TER return enif_make_badarg(env); } } - -/*================================================================*/ -#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) -{ - 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 - digp = get_digest_type(type); - if (!digp) return PKEY_BADARG; - if (!digp->md.p) 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; - const ERL_NIF_TERM *tpl_terms; - int tpl_arity; - ErlNifBinary tbs_bin; - EVP_MD_CTX *mdctx; - const EVP_MD *md = *mdp; - unsigned char *tbs = *tbsp; - size_t tbslen = *tbslenp; - unsigned int tbsleni; - - 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 || tpl_terms[0] != atom_digest - || !enif_inspect_binary(env, tpl_terms[1], &tbs_bin) - || (md != NULL && tbs_bin.size != EVP_MD_size(md))) { - return PKEY_BADARG; - } - /* 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)) { - return PKEY_BADARG; - } - /* 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)) { - return PKEY_BADARG; - } - /* We have the cleartext in tbs_bin and the hash algo info in md */ - tbs = md_value; - mdctx = EVP_MD_CTX_create(); - if (!mdctx) { - return PKEY_BADARG; - } - /* Looks well, now hash the plain text into a digest according to md */ - if (EVP_DigestInit_ex(mdctx, md, NULL) <= 0) { - EVP_MD_CTX_destroy(mdctx); - return PKEY_BADARG; - } - if (EVP_DigestUpdate(mdctx, tbs_bin.data, tbs_bin.size) <= 0) { - EVP_MD_CTX_destroy(mdctx); - return PKEY_BADARG; - } - if (EVP_DigestFinal_ex(mdctx, tbs, &tbsleni) <= 0) { - EVP_MD_CTX_destroy(mdctx); - return PKEY_BADARG; - } - tbslen = (size_t)(tbsleni); - EVP_MD_CTX_destroy(mdctx); - } - - *mdp = md; - *tbsp = tbs; - *tbslenp = tbslen; - - return PKEY_OK; -} - - -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; - int i; - - if (!enif_is_list(env, options)) { - return PKEY_BADARG; - } - - /* 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) { - tail = options; - while (enif_get_list_cell(env, tail, &head, &tail)) { - if (enif_get_tuple(env, head, &tpl_arity, &tpl_terms) && tpl_arity == 2) { - if (tpl_terms[0] == atom_rsa_mgf1_md && enif_is_atom(env, tpl_terms[1])) { - 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_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 { - return PKEY_BADARG; - } - } else if (tpl_terms[0] == atom_rsa_pss_saltlen) { - if (!enif_get_int(env, tpl_terms[1], &(opt->rsa_pss_saltlen)) - || opt->rsa_pss_saltlen < -2) { - return PKEY_BADARG; - } - } else { - return PKEY_BADARG; - } - } else { - return PKEY_BADARG; - } - } - } else { - return PKEY_BADARG; - } - - return PKEY_OK; -} - - -static int get_pkey_private_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, EVP_PKEY **pkey) -{ - if (enif_is_map(env, key)) { -#ifdef HAS_ENGINE_SUPPORT - /* Use key stored in engine */ - ENGINE *e; - char *id = NULL; - char *password; - - if (!get_engine_and_key_id(env, key, &id, &e)) - return PKEY_BADARG; - password = get_key_password(env, key); - *pkey = ENGINE_load_private_key(e, id, NULL, password); - if (password) enif_free(password); - enif_free(id); - if (!*pkey) - return PKEY_BADARG; -#else - return PKEY_BADARG; -#endif - } - else if (algorithm == atom_rsa) { - RSA *rsa = RSA_new(); - - if (!get_rsa_private_key(env, key, rsa)) { - RSA_free(rsa); - return PKEY_BADARG; - } - - *pkey = EVP_PKEY_new(); - if (!EVP_PKEY_assign_RSA(*pkey, rsa)) { - EVP_PKEY_free(*pkey); - RSA_free(rsa); - return PKEY_BADARG; - } - } else if (algorithm == atom_ecdsa) { -#if defined(HAVE_EC) - EC_KEY *ec = NULL; - const ERL_NIF_TERM *tpl_terms; - int tpl_arity; - - if (enif_get_tuple(env, key, &tpl_arity, &tpl_terms) && tpl_arity == 2 - && enif_is_tuple(env, tpl_terms[0]) && enif_is_binary(env, tpl_terms[1]) - && get_ec_key(env, tpl_terms[0], tpl_terms[1], atom_undefined, &ec)) { - - *pkey = EVP_PKEY_new(); - if (!EVP_PKEY_assign_EC_KEY(*pkey, ec)) { - EVP_PKEY_free(*pkey); - EC_KEY_free(ec); - return PKEY_BADARG; - } - } else { - return PKEY_BADARG; - } -#else - return PKEY_NOTSUP; -#endif - } else if (algorithm == atom_eddsa) { -#if defined(HAVE_EDDSA) - if (!get_eddsa_key(env, 0, key, pkey)) { - return PKEY_BADARG; - } -#else - return PKEY_NOTSUP; -#endif - } else if (algorithm == atom_dss) { - DSA *dsa = DSA_new(); - - if (!get_dss_private_key(env, key, dsa)) { - DSA_free(dsa); - return PKEY_BADARG; - } - - *pkey = EVP_PKEY_new(); - if (!EVP_PKEY_assign_DSA(*pkey, dsa)) { - EVP_PKEY_free(*pkey); - DSA_free(dsa); - return PKEY_BADARG; - } - } else { - return PKEY_BADARG; - } - - return PKEY_OK; -} - - -static int get_pkey_public_key(ErlNifEnv *env, ERL_NIF_TERM algorithm, ERL_NIF_TERM key, - EVP_PKEY **pkey) -{ - if (enif_is_map(env, key)) { -#ifdef HAS_ENGINE_SUPPORT - /* Use key stored in engine */ - ENGINE *e; - char *id = NULL; - char *password; - - if (!get_engine_and_key_id(env, key, &id, &e)) - return PKEY_BADARG; - password = get_key_password(env, key); - *pkey = ENGINE_load_public_key(e, id, NULL, password); - if (password) enif_free(password); - enif_free(id); - if (!pkey) - return PKEY_BADARG; -#else - return PKEY_BADARG; -#endif - } else if (algorithm == atom_rsa) { - RSA *rsa = RSA_new(); - - if (!get_rsa_public_key(env, key, rsa)) { - RSA_free(rsa); - return PKEY_BADARG; - } - - *pkey = EVP_PKEY_new(); - if (!EVP_PKEY_assign_RSA(*pkey, rsa)) { - EVP_PKEY_free(*pkey); - RSA_free(rsa); - return PKEY_BADARG; - } - } else if (algorithm == atom_ecdsa) { -#if defined(HAVE_EC) - EC_KEY *ec = NULL; - const ERL_NIF_TERM *tpl_terms; - int tpl_arity; - - if (enif_get_tuple(env, key, &tpl_arity, &tpl_terms) && tpl_arity == 2 - && enif_is_tuple(env, tpl_terms[0]) && enif_is_binary(env, tpl_terms[1]) - && get_ec_key(env, tpl_terms[0], atom_undefined, tpl_terms[1], &ec)) { - - *pkey = EVP_PKEY_new(); - if (!EVP_PKEY_assign_EC_KEY(*pkey, ec)) { - EVP_PKEY_free(*pkey); - EC_KEY_free(ec); - return PKEY_BADARG; - } - } else { - return PKEY_BADARG; - } -#else - return PKEY_NOTSUP; -#endif - } else if (algorithm == atom_eddsa) { -#if defined(HAVE_EDDSA) - if (!get_eddsa_key(env, 1, key, pkey)) { - return PKEY_BADARG; - } -#else - return PKEY_NOTSUP; -#endif - } else if (algorithm == atom_dss) { - DSA *dsa = DSA_new(); - - if (!get_dss_public_key(env, key, dsa)) { - DSA_free(dsa); - return PKEY_BADARG; - } - - *pkey = EVP_PKEY_new(); - if (!EVP_PKEY_assign_DSA(*pkey, dsa)) { - EVP_PKEY_free(*pkey); - DSA_free(dsa); - return PKEY_BADARG; - } - } else { - return PKEY_BADARG; - } - - return PKEY_OK; -} - -static ERL_NIF_TERM pkey_sign_nif(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) -{/* (Algorithm, Type, Data|{digest,Digest}, Key|#{}, Options) */ - int i; - const EVP_MD *md = NULL; - unsigned char md_value[EVP_MAX_MD_SIZE]; - EVP_PKEY *pkey; -#ifdef HAS_EVP_PKEY_CTX - EVP_PKEY_CTX *ctx; - size_t siglen; -#else - unsigned len, siglen; -#endif - PKeySignOptions sig_opt; - ErlNifBinary sig_bin; /* signature */ - unsigned char *tbs; /* data to be signed */ - size_t tbslen; -/*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); - if (i != PKEY_OK) { - if (i == PKEY_NOTSUP) - return atom_notsup; - else - return enif_make_badarg(env); - } - - i = get_pkey_sign_options(env, argv[0], argv[4], md, &sig_opt); - if (i != PKEY_OK) { - if (i == PKEY_NOTSUP) - return atom_notsup; - else - return enif_make_badarg(env); - } - - if (get_pkey_private_key(env, argv[0], argv[3], &pkey) != PKEY_OK) { - return enif_make_badarg(env); - } - -#ifdef HAS_EVP_PKEY_CTX - ctx = EVP_PKEY_CTX_new(pkey, NULL); - if (!ctx) goto badarg; - - if (argv[0] != atom_eddsa) { - if (EVP_PKEY_sign_init(ctx) <= 0) goto badarg; - if (md != NULL && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) goto badarg; - } - - if (argv[0] == atom_rsa) { - if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) <= 0) goto badarg; -# 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) <= 0) goto badarg; -# else - EVP_PKEY_CTX_free(ctx); - EVP_PKEY_free(pkey); - return atom_notsup; -# endif - } - if (sig_opt.rsa_pss_saltlen > -2 - && EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) <= 0) - goto badarg; - } -#endif - } - - if (argv[0] == atom_eddsa) { -#ifdef HAVE_EDDSA - EVP_MD_CTX* mdctx = EVP_MD_CTX_new(); - if (!EVP_DigestSignInit(mdctx, NULL, NULL, NULL, pkey)) { - if (mdctx) EVP_MD_CTX_free(mdctx); - goto badarg; - } - - if (!EVP_DigestSign(mdctx, NULL, &siglen, tbs, tbslen)) { - EVP_MD_CTX_free(mdctx); - goto badarg; - } - enif_alloc_binary(siglen, &sig_bin); - - if (!EVP_DigestSign(mdctx, sig_bin.data, &siglen, tbs, tbslen)) { - EVP_MD_CTX_free(mdctx); - goto badarg; - } - EVP_MD_CTX_free(mdctx); -#else - goto badarg; -#endif - } - else - { - if (EVP_PKEY_sign(ctx, NULL, &siglen, tbs, tbslen) <= 0) goto badarg; - enif_alloc_binary(siglen, &sig_bin); - - if (md != NULL) { - ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md)); - } - i = EVP_PKEY_sign(ctx, sig_bin.data, &siglen, tbs, tbslen); - } - - EVP_PKEY_CTX_free(ctx); -#else -/*printf("Old interface\r\n"); - */ - if (argv[0] == atom_rsa) { - RSA *rsa = EVP_PKEY_get1_RSA(pkey); - enif_alloc_binary(RSA_size(rsa), &sig_bin); - len = EVP_MD_size(md); - ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len); - i = RSA_sign(md->type, tbs, len, sig_bin.data, &siglen, rsa); - RSA_free(rsa); - } else if (argv[0] == atom_dss) { - DSA *dsa = EVP_PKEY_get1_DSA(pkey); - enif_alloc_binary(DSA_size(dsa), &sig_bin); - len = EVP_MD_size(md); - ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len); - i = DSA_sign(md->type, tbs, len, sig_bin.data, &siglen, dsa); - DSA_free(dsa); - } else if (argv[0] == atom_ecdsa) { -#if defined(HAVE_EC) - EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey); - enif_alloc_binary(ECDSA_size(ec), &sig_bin); - len = EVP_MD_size(md); - ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, len); - i = ECDSA_sign(md->type, tbs, len, sig_bin.data, &siglen, ec); - EC_KEY_free(ec); -#else - EVP_PKEY_free(pkey); - return atom_notsup; -#endif - } else { - goto badarg; - } -#endif - - EVP_PKEY_free(pkey); - if (i == 1) { - ERL_VALGRIND_MAKE_MEM_DEFINED(sig_bin.data, siglen); - if (siglen != sig_bin.size) { - enif_realloc_binary(&sig_bin, siglen); - ERL_VALGRIND_ASSERT_MEM_DEFINED(sig_bin.data, siglen); - } - return enif_make_binary(env, &sig_bin); - } else { - enif_release_binary(&sig_bin); - return atom_error; - } - - badarg: -#ifdef HAS_EVP_PKEY_CTX - EVP_PKEY_CTX_free(ctx); -#endif - EVP_PKEY_free(pkey); - return enif_make_badarg(env); -} - - -static 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; - const EVP_MD *md = NULL; - unsigned char md_value[EVP_MAX_MD_SIZE]; - EVP_PKEY *pkey; -#ifdef HAS_EVP_PKEY_CTX - EVP_PKEY_CTX *ctx; -#else -#endif - PKeySignOptions sig_opt; - ErlNifBinary sig_bin; /* signature */ - unsigned char *tbs; /* data to be signed */ - size_t tbslen; - -#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); - if (i != PKEY_OK) { - if (i == PKEY_NOTSUP) - return atom_notsup; - else - return enif_make_badarg(env); - } - - i = get_pkey_sign_options(env, argv[0], argv[5], md, &sig_opt); - if (i != PKEY_OK) { - if (i == PKEY_NOTSUP) - return atom_notsup; - else - return enif_make_badarg(env); - } - - if (get_pkey_public_key(env, argv[0], argv[4], &pkey) != PKEY_OK) { - return enif_make_badarg(env); - } - -#ifdef HAS_EVP_PKEY_CTX -/* printf("EVP interface\r\n"); - */ - ctx = EVP_PKEY_CTX_new(pkey, NULL); - if (!ctx) goto badarg; - - if (argv[0] != atom_eddsa) { - if (EVP_PKEY_verify_init(ctx) <= 0) goto badarg; - if (md != NULL && EVP_PKEY_CTX_set_signature_md(ctx, md) <= 0) goto badarg; - } - - if (argv[0] == atom_rsa) { - if (EVP_PKEY_CTX_set_rsa_padding(ctx, sig_opt.rsa_padding) <= 0) goto badarg; - 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) <= 0) goto badarg; -# else - EVP_PKEY_CTX_free(ctx); - EVP_PKEY_free(pkey); - return atom_notsup; -# endif - } - if (sig_opt.rsa_pss_saltlen > -2 - && EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, sig_opt.rsa_pss_saltlen) <= 0) - goto badarg; - } - } - - if (argv[0] == atom_eddsa) { -#ifdef HAVE_EDDSA - EVP_MD_CTX* mdctx = EVP_MD_CTX_create(); - - if (!EVP_DigestVerifyInit(mdctx, NULL, NULL, NULL, pkey)) { - if (mdctx) EVP_MD_CTX_destroy(mdctx); - goto badarg; - } - - i = EVP_DigestVerify(mdctx, sig_bin.data, sig_bin.size, tbs, tbslen); - EVP_MD_CTX_destroy(mdctx); -#else - goto badarg; -#endif - } - else - { - if (md != NULL) { - ERL_VALGRIND_ASSERT_MEM_DEFINED(tbs, EVP_MD_size(md)); - } - i = EVP_PKEY_verify(ctx, sig_bin.data, sig_bin.size, tbs, tbslen); - } - - EVP_PKEY_CTX_free(ctx); -#else -/*printf("Old interface\r\n"); -*/ - if (argv[0] == atom_rsa) { - RSA *rsa = EVP_PKEY_get1_RSA(pkey); - i = RSA_verify(md->type, tbs, tbslen, sig_bin.data, sig_bin.size, rsa); - RSA_free(rsa); - } else if (argv[0] == atom_dss) { - DSA *dsa = EVP_PKEY_get1_DSA(pkey); - i = DSA_verify(0, tbs, tbslen, sig_bin.data, sig_bin.size, dsa); - DSA_free(dsa); - } else if (argv[0] == atom_ecdsa) { -#if defined(HAVE_EC) - EC_KEY *ec = EVP_PKEY_get1_EC_KEY(pkey); - i = ECDSA_verify(EVP_MD_type(md), tbs, tbslen, sig_bin.data, sig_bin.size, ec); - EC_KEY_free(ec); -#else - EVP_PKEY_free(pkey); - return atom_notsup; -#endif - } else { - goto badarg; - } -#endif - - EVP_PKEY_free(pkey); - if (i == 1) { - return atom_true; - } else { - return atom_false; - } - - badarg: -#ifdef HAS_EVP_PKEY_CTX - EVP_PKEY_CTX_free(ctx); -#endif - EVP_PKEY_free(pkey); - return enif_make_badarg(env); -} - - -/*--------------------------------*/ - -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; - int i; - - if (!enif_is_list(env, options)) { - return PKEY_BADARG; - } - - /* 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) { - tail = options; - while (enif_get_list_cell(env, tail, &head, &tail)) { - if (enif_get_tuple(env, head, &tpl_arity, &tpl_terms) && tpl_arity == 2) { - 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 { - return PKEY_BADARG; - } - } else if (tpl_terms[0] == atom_signature_md && enif_is_atom(env, tpl_terms[1])) { - 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])) { -#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])) { -#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 { - return PKEY_BADARG; - } - } else { - return PKEY_BADARG; - } - } - } else { - return PKEY_BADARG; - } - - return PKEY_OK; -} - -static size_t size_of_RSA(EVP_PKEY *pkey) { - size_t tmplen; - RSA *rsa = EVP_PKEY_get1_RSA(pkey); - if (rsa == NULL) return 0; - tmplen = RSA_size(rsa); - RSA_free(rsa); - return tmplen; -} - -static 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) */ - int i; - EVP_PKEY *pkey; -#ifdef HAS_EVP_PKEY_CTX - EVP_PKEY_CTX *ctx; -#else - RSA *rsa; -#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 = (argv[4] == atom_true), - is_encrypt = (argv[5] == atom_true); - int algo_init = 0; - -/* 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)) { - return enif_make_badarg(env); - } - - i = get_pkey_crypt_options(env, argv[0], argv[3], &crypt_opt); - if (i != PKEY_OK) { - if (i == PKEY_NOTSUP) - return atom_notsup; - else - return enif_make_badarg(env); - } - - if (is_private) { - if (get_pkey_private_key(env, argv[0], argv[2], &pkey) != PKEY_OK) { - return enif_make_badarg(env); - } - } else { - if (get_pkey_public_key(env, argv[0], argv[2], &pkey) != PKEY_OK) { - return enif_make_badarg(env); - } - } - - out_bin.data = NULL; - out_bin.size = 0; - tmp_bin.data = NULL; - tmp_bin.size = 0; - -#ifdef HAS_EVP_PKEY_CTX - ctx = EVP_PKEY_CTX_new(pkey, NULL); - if (!ctx) goto badarg; - -/* 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)) <= 0) { - /* fprintf(stderr,"BADARG %s private encrypt algo_init=%d %s:%d\r\n", algo, algo_init, __FILE__, __LINE__); */ - goto badarg; - } - } else { - /* private decrypt */ - if ((algo_init=EVP_PKEY_decrypt_init(ctx)) <= 0) { - /* fprintf(stderr,"BADARG %s private decrypt algo_init=%d %s:%d\r\n", algo, algo_init, __FILE__, __LINE__); */ - goto badarg; - } - } - } else { - if (is_encrypt) { - /* public encrypt */ - if ((algo_init=EVP_PKEY_encrypt_init(ctx)) <= 0) { - /* fprintf(stderr,"BADARG %s public encrypt algo_init=%d %s:%d\r\n", algo,algo_init,__FILE__, __LINE__); */ - goto badarg; - } - } else { - /* public decrypt */ - if ((algo_init=EVP_PKEY_verify_recover_init(ctx)) <= 0) { - /* fprintf(stderr,"BADARG %s public decrypt algo_init=%d %s:%d\r\n", algo,algo_init,__FILE__, __LINE__); */ - goto badarg; - } - } - } - - if (argv[0] == atom_rsa) { - if (crypt_opt.signature_md != NULL - && EVP_PKEY_CTX_set_signature_md(ctx, crypt_opt.signature_md) <= 0) - goto badarg; -#ifdef HAVE_RSA_SSLV23_PADDING - if (crypt_opt.rsa_padding == RSA_SSLV23_PADDING) { - if (is_encrypt) { - tmplen = size_of_RSA(pkey); - if (tmplen == 0) goto badarg; - if (!enif_alloc_binary(tmplen, &tmp_bin)) goto badarg; - if (RSA_padding_add_SSLv23(tmp_bin.data, tmplen, in_bin.data, in_bin.size) <= 0) - goto badarg; - in_bin = tmp_bin; - } - if (EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_NO_PADDING) <= 0) goto badarg; - } else -#endif - { - if (EVP_PKEY_CTX_set_rsa_padding(ctx, crypt_opt.rsa_padding) <= 0) goto badarg; - } -#ifdef HAVE_RSA_OAEP_MD - if (crypt_opt.rsa_padding == RSA_PKCS1_OAEP_PADDING) { - if (crypt_opt.rsa_oaep_md != NULL - && EVP_PKEY_CTX_set_rsa_oaep_md(ctx, crypt_opt.rsa_oaep_md) <= 0) - goto badarg; - if (crypt_opt.rsa_mgf1_md != NULL - && EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, crypt_opt.rsa_mgf1_md) <= 0) goto badarg; - if (crypt_opt.rsa_oaep_label.data != NULL && crypt_opt.rsa_oaep_label.size > 0) { - unsigned char *label_copy = NULL; - label_copy = OPENSSL_malloc(crypt_opt.rsa_oaep_label.size); - if (label_copy == NULL) goto badarg; - 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, - crypt_opt.rsa_oaep_label.size) <= 0) { - OPENSSL_free(label_copy); - label_copy = NULL; - goto badarg; - } - } - } -#endif - } - - if (is_private) { - if (is_encrypt) { - /* private_encrypt */ - i = EVP_PKEY_sign(ctx, NULL, &outlen, in_bin.data, in_bin.size); - } else { - /* private_decrypt */ - i = EVP_PKEY_decrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size); - } - } else { - if (is_encrypt) { - /* public_encrypt */ - i = EVP_PKEY_encrypt(ctx, NULL, &outlen, in_bin.data, in_bin.size); - } else { - /* public_decrypt */ - i = 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 (i != 1) goto badarg; - - enif_alloc_binary(outlen, &out_bin); - - if (is_private) { - if (is_encrypt) { - /* private_encrypt */ - i = EVP_PKEY_sign(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size); - } else { - /* private_decrypt */ - i = EVP_PKEY_decrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size); - } - } else { - if (is_encrypt) { - /* public_encrypt */ - i = EVP_PKEY_encrypt(ctx, out_bin.data, &outlen, in_bin.data, in_bin.size); - } else { - /* public_decrypt */ - i = 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 badarg; - } - rsa = EVP_PKEY_get1_RSA(pkey); - enif_alloc_binary(RSA_size(rsa), &out_bin); - - if (is_private) { - if (is_encrypt) { - /* non-evp rsa private encrypt */ - ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size); - i = RSA_private_encrypt(in_bin.size, in_bin.data, - out_bin.data, rsa, crypt_opt.rsa_padding); - if (i > 0) { - ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i); - } - } else { - /* non-evp rsa private decrypt */ - i = RSA_private_decrypt(in_bin.size, in_bin.data, - out_bin.data, rsa, crypt_opt.rsa_padding); - if (i > 0) { - ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i); - enif_realloc_binary(&out_bin, i); - } - } - } else { - if (is_encrypt) { - /* non-evp rsa public encrypt */ - ERL_VALGRIND_ASSERT_MEM_DEFINED(in_bin.data,in_bin.size); - i = RSA_public_encrypt(in_bin.size, in_bin.data, - out_bin.data, rsa, crypt_opt.rsa_padding); - if (i > 0) { - ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i); - } - } else { - /* non-evp rsa public decrypt */ - i = RSA_public_decrypt(in_bin.size, in_bin.data, - out_bin.data, rsa, crypt_opt.rsa_padding); - if (i > 0) { - ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, i); - enif_realloc_binary(&out_bin, i); - } - } - } - - outlen = i; - RSA_free(rsa); -#endif - - if ((i > 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 == 0) goto badarg; - if (!enif_alloc_binary(tmplen, &tmp_bin)) - goto badarg; - p = out_bin.data; - p++; - i = RSA_padding_check_SSLv23(tmp_bin.data, tmplen, p, out_bin.size - 1, tmplen); - if (i >= 0) { - outlen = i; - in_bin = out_bin; - out_bin = tmp_bin; - tmp_bin = in_bin; - i = 1; - } - } -#endif - } - - if (tmp_bin.data != NULL) { - enif_release_binary(&tmp_bin); - } - -#ifdef HAS_EVP_PKEY_CTX - EVP_PKEY_CTX_free(ctx); -#else -#endif - EVP_PKEY_free(pkey); - if (i > 0) { - ERL_VALGRIND_MAKE_MEM_DEFINED(out_bin.data, outlen); - if (outlen != out_bin.size) { - enif_realloc_binary(&out_bin, outlen); - ERL_VALGRIND_ASSERT_MEM_DEFINED(out_bin.data, outlen); - } - return enif_make_binary(env, &out_bin); - } else { - enif_release_binary(&out_bin); - return atom_error; - } - - badarg: - if (out_bin.data != NULL) { - enif_release_binary(&out_bin); - } - if (tmp_bin.data != NULL) { - enif_release_binary(&tmp_bin); - } -#ifdef HAS_EVP_PKEY_CTX - EVP_PKEY_CTX_free(ctx); -#else -#endif - EVP_PKEY_free(pkey); - if (algo_init == -2) - return atom_notsup; - else - return enif_make_badarg(env); -} - - - -/*--------------------------------*/ -static ERL_NIF_TERM privkey_to_pubkey_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) -{ /* (Algorithm, PrivKey | KeyMap) */ - EVP_PKEY *pkey; - ERL_NIF_TERM alg = argv[0]; - ERL_NIF_TERM result[8]; - if (get_pkey_private_key(env, alg, argv[1], &pkey) != PKEY_OK) { - return enif_make_badarg(env); - } - - if (alg == atom_rsa) { - const BIGNUM *n = NULL, *e = NULL, *d = NULL; - RSA *rsa = EVP_PKEY_get1_RSA(pkey); - if (rsa) { - RSA_get0_key(rsa, &n, &e, &d); - result[0] = bin_from_bn(env, e); // Exponent E - result[1] = bin_from_bn(env, n); // Modulus N = p*q - RSA_free(rsa); - EVP_PKEY_free(pkey); - return 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; - DSA *dsa = EVP_PKEY_get1_DSA(pkey); - if (dsa) { - DSA_get0_pqg(dsa, &p, &q, &g); - DSA_get0_key(dsa, &pub_key, NULL); - result[0] = bin_from_bn(env, p); - result[1] = bin_from_bn(env, q); - result[2] = bin_from_bn(env, g); - result[3] = bin_from_bn(env, pub_key); - DSA_free(dsa); - EVP_PKEY_free(pkey); - return 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 - } - - if (pkey) EVP_PKEY_free(pkey); - return enif_make_badarg(env); -} |