aboutsummaryrefslogtreecommitdiffstats
path: root/lib/crypto/c_src/cipher.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/crypto/c_src/cipher.c')
-rw-r--r--lib/crypto/c_src/cipher.c344
1 files changed, 344 insertions, 0 deletions
diff --git a/lib/crypto/c_src/cipher.c b/lib/crypto/c_src/cipher.c
new file mode 100644
index 0000000000..00072af632
--- /dev/null
+++ b/lib/crypto/c_src/cipher.c
@@ -0,0 +1,344 @@
+/*
+ * %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 "cipher.h"
+
+#ifdef HAVE_DES
+#define COND_NO_DES_PTR(Ptr) (Ptr)
+#else
+#define COND_NO_DES_PTR(Ptr) (NULL)
+#endif
+
+static struct cipher_type_t cipher_types[] =
+{
+#ifdef HAVE_RC2
+ {{"rc2_cbc"}, {&EVP_rc2_cbc}, 0, NO_FIPS_CIPHER},
+#else
+ {{"rc2_cbc"}, {NULL}, 0, NO_FIPS_CIPHER},
+#endif
+#ifdef HAVE_RC4
+ {{"rc4"}, {&EVP_rc4}, 0, NO_FIPS_CIPHER},
+#else
+ {{"rc4"}, {NULL}, 0, NO_FIPS_CIPHER},
+#endif
+ {{"des_cbc"}, {COND_NO_DES_PTR(&EVP_des_cbc)}, 0, NO_FIPS_CIPHER},
+ {{"des_cfb"}, {COND_NO_DES_PTR(&EVP_des_cfb8)}, 0, NO_FIPS_CIPHER},
+ {{"des_ecb"}, {COND_NO_DES_PTR(&EVP_des_ecb)}, 0, NO_FIPS_CIPHER | ECB_BUG_0_9_8L},
+
+ {{"des_ede3_cbc"}, {COND_NO_DES_PTR(&EVP_des_ede3_cbc)}, 0, 0},
+
+#ifdef HAVE_DES_ede3_cfb_encrypt
+ {{"des_ede3_cfb"}, {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)}, 0, 0},
+#else
+ {{"des_ede3_cfb"}, {NULL}, 0, 0},
+#endif
+
+#ifdef HAVE_BF
+ {{"blowfish_cbc"}, {&EVP_bf_cbc}, 0, NO_FIPS_CIPHER},
+ {{"blowfish_cfb64"}, {&EVP_bf_cfb64}, 0, NO_FIPS_CIPHER},
+ {{"blowfish_ofb64"}, {&EVP_bf_ofb}, 0, NO_FIPS_CIPHER},
+ {{"blowfish_ecb"}, {&EVP_bf_ecb}, 0, NO_FIPS_CIPHER | ECB_BUG_0_9_8L},
+#else
+ {{"blowfish_cbc"}, {NULL}, 0, 0},
+ {{"blowfish_cfb64"}, {NULL}, 0, 0},
+ {{"blowfish_ofb64"}, {NULL}, 0, 0},
+ {{"blowfish_ecb"}, {NULL}, 0, 0},
+#endif
+
+ {{"aes_128_cbc"}, {&EVP_aes_128_cbc}, 16, 0},
+ {{"aes_192_cbc"}, {&EVP_aes_192_cbc}, 24, 0},
+ {{"aes_256_cbc"}, {&EVP_aes_256_cbc}, 32, 0},
+
+ {{"aes_128_cfb8"}, {&EVP_aes_128_cfb8}, 16, NO_FIPS_CIPHER | AES_CFBx},
+ {{"aes_192_cfb8"}, {&EVP_aes_192_cfb8}, 24, NO_FIPS_CIPHER | AES_CFBx},
+ {{"aes_256_cfb8"}, {&EVP_aes_256_cfb8}, 32, NO_FIPS_CIPHER | AES_CFBx},
+
+ {{"aes_128_cfb128"}, {&EVP_aes_128_cfb128}, 16, NO_FIPS_CIPHER | AES_CFBx},
+ {{"aes_192_cfb128"}, {&EVP_aes_192_cfb128}, 24, NO_FIPS_CIPHER | AES_CFBx},
+ {{"aes_256_cfb128"}, {&EVP_aes_256_cfb128}, 32, NO_FIPS_CIPHER | AES_CFBx},
+
+ {{"aes_128_ecb"}, {&EVP_aes_128_ecb}, 16, ECB_BUG_0_9_8L},
+ {{"aes_192_ecb"}, {&EVP_aes_192_ecb}, 24, ECB_BUG_0_9_8L},
+ {{"aes_256_ecb"}, {&EVP_aes_256_ecb}, 32, ECB_BUG_0_9_8L},
+
+#if defined(HAVE_EVP_AES_CTR)
+ {{"aes_128_ctr"}, {&EVP_aes_128_ctr}, 16, 0},
+ {{"aes_192_ctr"}, {&EVP_aes_192_ctr}, 24, 0},
+ {{"aes_256_ctr"}, {&EVP_aes_256_ctr}, 32, 0},
+#else
+ {{"aes_128_ctr"}, {NULL}, 16, AES_CTR_COMPAT},
+ {{"aes_192_ctr"}, {NULL}, 24, AES_CTR_COMPAT},
+ {{"aes_256_ctr"}, {NULL}, 32, AES_CTR_COMPAT},
+#endif
+
+#if defined(HAVE_CHACHA20)
+ {{"chacha20"}, {&EVP_chacha20}, 32, NO_FIPS_CIPHER},
+#else
+ {{"chacha20"}, {NULL}, 0, NO_FIPS_CIPHER},
+#endif
+
+ /*==== AEAD ciphers ====*/
+#if defined(HAVE_CHACHA20_POLY1305)
+ {{"chacha20_poly1305"}, {&EVP_chacha20_poly1305}, 0, NO_FIPS_CIPHER | AEAD_CIPHER, {{EVP_CTRL_AEAD_SET_IVLEN,EVP_CTRL_AEAD_GET_TAG,EVP_CTRL_AEAD_SET_TAG}}},
+#else
+ {{"chacha20_poly1305"}, {NULL}, 0, NO_FIPS_CIPHER | AEAD_CIPHER, {{0,0,0}}},
+#endif
+
+#if defined(HAVE_GCM)
+ {{"aes_128_gcm"}, {&EVP_aes_128_gcm}, 16, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+ {{"aes_192_gcm"}, {&EVP_aes_192_gcm}, 24, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+ {{"aes_256_gcm"}, {&EVP_aes_256_gcm}, 32, AEAD_CIPHER|GCM_MODE, {{EVP_CTRL_GCM_SET_IVLEN,EVP_CTRL_GCM_GET_TAG,EVP_CTRL_GCM_SET_TAG}}},
+#else
+ {{"aes_128_gcm"}, {NULL}, 16, AEAD_CIPHER|GCM_MODE, {{0,0,0}}},
+ {{"aes_192_gcm"}, {NULL}, 24, AEAD_CIPHER|GCM_MODE, {{0,0,0}}},
+ {{"aes_256_gcm"}, {NULL}, 32, AEAD_CIPHER|GCM_MODE, {{0,0,0}}},
+#endif
+
+#if defined(HAVE_CCM)
+ {{"aes_128_ccm"}, {&EVP_aes_128_ccm}, 16, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+ {{"aes_192_ccm"}, {&EVP_aes_192_ccm}, 24, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+ {{"aes_256_ccm"}, {&EVP_aes_256_ccm}, 32, AEAD_CIPHER|CCM_MODE, {{EVP_CTRL_CCM_SET_IVLEN,EVP_CTRL_CCM_GET_TAG,EVP_CTRL_CCM_SET_TAG}}},
+#else
+ {{"aes_128_ccm"}, {NULL}, 16, AEAD_CIPHER|CCM_MODE, {{0,0,0}}},
+ {{"aes_192_ccm"}, {NULL}, 24, AEAD_CIPHER|CCM_MODE, {{0,0,0}}},
+ {{"aes_256_ccm"}, {NULL}, 32, AEAD_CIPHER|CCM_MODE, {{0,0,0}}},
+#endif
+
+ /*==== Specialy handled ciphers, only for inclusion in algorithm's list ====*/
+#ifdef HAVE_AES_IGE
+ {{"aes_ige256"}, {NULL}, 0, NO_FIPS_CIPHER | NON_EVP_CIPHER},
+#endif
+
+ /*==== End of list ==== */
+
+ {{NULL},{NULL},0,0}
+};
+
+ErlNifResourceType* evp_cipher_ctx_rtype;
+
+static size_t num_cipher_types = 0;
+
+static void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) {
+ if (ctx == NULL)
+ return;
+
+ if (ctx->ctx)
+ EVP_CIPHER_CTX_free(ctx->ctx);
+
+#if !defined(HAVE_EVP_AES_CTR)
+ if (ctx->env)
+ enif_free_env(ctx->env);
+#endif
+}
+
+int init_cipher_ctx(ErlNifEnv *env) {
+ evp_cipher_ctx_rtype = enif_open_resource_type(env, NULL, "EVP_CIPHER_CTX",
+ (ErlNifResourceDtor*) evp_cipher_ctx_dtor,
+ ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
+ NULL);
+ if (evp_cipher_ctx_rtype == NULL)
+ goto err;
+
+ return 1;
+
+ err:
+ PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_CIPHER_CTX'");
+ return 0;
+}
+
+void init_cipher_types(ErlNifEnv* env)
+{
+ struct cipher_type_t* p = cipher_types;
+
+ num_cipher_types = 0;
+ for (p = cipher_types; p->type.str; p++) {
+ num_cipher_types++;
+ p->type.atom = enif_make_atom(env, p->type.str);
+ if (p->cipher.funcp)
+ p->cipher.p = p->cipher.funcp();
+ }
+ p->type.atom = atom_false; /* end marker */
+
+ qsort(cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types);
+}
+
+const struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len)
+{
+ struct cipher_type_t key;
+
+ key.type.atom = type;
+ key.key_len = key_len;
+
+ return bsearch(&key, cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types);
+}
+
+
+int cmp_cipher_types(const void *keyp, const void *elemp) {
+ const struct cipher_type_t *key = keyp;
+ const struct cipher_type_t *elem = elemp;
+
+ if (key->type.atom < elem->type.atom) return -1;
+ else if (key->type.atom > elem->type.atom) return 1;
+ else /* key->type.atom == elem->type.atom */
+ if (!elem->key_len || key->key_len == elem->key_len) return 0;
+ else if (key->key_len < elem->key_len) return -1;
+ else return 1;
+}
+
+
+ERL_NIF_TERM cipher_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Type) */
+ const struct cipher_type_t *cipherp;
+ const EVP_CIPHER *cipher;
+ ERL_NIF_TERM ret, ret_mode;
+ unsigned type;
+ unsigned long mode;
+
+ if ((cipherp = get_cipher_type_no_key(argv[0])) == NULL)
+ return enif_make_badarg(env);
+
+ if (FORBIDDEN_IN_FIPS(cipherp))
+ return enif_raise_exception(env, atom_notsup);
+ if ((cipher = cipherp->cipher.p) == NULL)
+ return enif_raise_exception(env, atom_notsup);
+
+ ret = enif_make_new_map(env);
+
+ type = EVP_CIPHER_type(cipher);
+ enif_make_map_put(env, ret, atom_type,
+ type == NID_undef ? atom_undefined : enif_make_int(env, type),
+ &ret);
+
+ enif_make_map_put(env, ret, atom_key_length,
+ enif_make_int(env, EVP_CIPHER_key_length(cipher)), &ret);
+ enif_make_map_put(env, ret, atom_iv_length,
+ enif_make_int(env, EVP_CIPHER_iv_length(cipher)), &ret);
+ enif_make_map_put(env, ret, atom_block_size,
+ enif_make_int(env, EVP_CIPHER_block_size(cipher)), &ret);
+
+ mode = EVP_CIPHER_mode(cipher);
+ switch (mode) {
+ case EVP_CIPH_ECB_MODE:
+ ret_mode = atom_ecb_mode;
+ break;
+
+ case EVP_CIPH_CBC_MODE:
+ ret_mode = atom_cbc_mode;
+ break;
+
+ case EVP_CIPH_CFB_MODE:
+ ret_mode = atom_cfb_mode;
+ break;
+
+ case EVP_CIPH_OFB_MODE:
+ ret_mode = atom_ofb_mode;
+ break;
+
+#ifdef EVP_CIPH_CTR_MODE
+ case EVP_CIPH_CTR_MODE:
+ ret_mode = atom_ctr_mode;
+ break;
+#endif
+
+#ifdef EVP_CIPH_GCM_MODE
+ case EVP_CIPH_GCM_MODE:
+ ret_mode = atom_gcm_mode;
+ break;
+#endif
+
+#ifdef EVP_CIPH_CCM_MODE
+ case EVP_CIPH_CCM_MODE:
+ ret_mode = atom_ccm_mode;
+ break;
+#endif
+
+#ifdef EVP_CIPH_XTS_MODE
+ case EVP_CIPH_XTS_MODE:
+ ret_mode = atom_xts_mode;
+ break;
+#endif
+
+#ifdef EVP_CIPH_WRAP_MODE
+ case EVP_CIPH_WRAP_MODE:
+ ret_mode = atom_wrap_mode;
+ break;
+#endif
+
+#ifdef EVP_CIPH_OCB_MODE
+ case EVP_CIPH_OCB_MODE:
+ ret_mode = atom_ocb_mode;
+ break;
+#endif
+
+ case EVP_CIPH_STREAM_CIPHER:
+ ret_mode = atom_stream_cipher;
+ break;
+
+ default:
+ ret_mode = atom_undefined;
+ break;
+ }
+
+ enif_make_map_put(env, ret, atom_mode, ret_mode, &ret);
+
+ return ret;
+}
+
+const struct cipher_type_t* get_cipher_type_no_key(ERL_NIF_TERM type)
+{
+ struct cipher_type_t key;
+
+ key.type.atom = type;
+
+ return bsearch(&key, cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types_no_key);
+}
+
+int cmp_cipher_types_no_key(const void *keyp, const void *elemp) {
+ const struct cipher_type_t *key = keyp;
+ const struct cipher_type_t *elem = elemp;
+
+ if (key->type.atom < elem->type.atom) return -1;
+ else if (key->type.atom > elem->type.atom) return 1;
+ else /* key->type.atom == elem->type.atom */ return 0;
+}
+
+
+ERL_NIF_TERM cipher_types_as_list(ErlNifEnv* env)
+{
+ struct cipher_type_t* p;
+ ERL_NIF_TERM prev, hd;
+
+ hd = enif_make_list(env, 0);
+ prev = atom_undefined;
+
+ for (p = cipher_types; (p->type.atom & (p->type.atom != atom_false)); p++) {
+ if ((prev == p->type.atom) ||
+ FORBIDDEN_IN_FIPS(p) )
+ continue;
+
+ if ((p->cipher.p != NULL) ||
+ (p->type.atom == atom_aes_ige256)) /* Special handling. Bad indeed... */
+ {
+ hd = enif_make_list_cell(env, p->type.atom, hd);
+ }
+ }
+
+ return hd;
+}