1 files changed, 84 insertions, 0 deletions
diff --git a/lib/crypto/c_src/cipher.h b/lib/crypto/c_src/cipher.h
new file mode 100644
index 0000000000..0e51c410eb
--- /dev/null
+++ b/lib/crypto/c_src/cipher.h
@@ -0,0 +1,84 @@
+/*
+ * %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%
+ */
+
+#ifndef E_CIPHER_H__
+#define E_CIPHER_H__ 1
+
+#include "common.h"
+
+struct cipher_type_t {
+    union {
+	const char* str;    /* before init */
+	ERL_NIF_TERM atom;  /* after init */
+    }type;
+    union {
+	const EVP_CIPHER* (*funcp)(void); /* before init, NULL if notsup */
+	const EVP_CIPHER* p;              /* after init, NULL if notsup */
+    }cipher;
+    size_t key_len;      /* != 0 to also match on key_len */
+    unsigned flags;
+    union {
+        struct aead_ctrl {int ctx_ctrl_set_ivlen, ctx_ctrl_get_tag,  ctx_ctrl_set_tag;} aead;
+    } extra;
+};
+
+/* masks in the flags field if cipher_type_t */
+#define NO_FIPS_CIPHER 1
+#define AES_CFBx 2
+#define ECB_BUG_0_9_8L 4
+#define AEAD_CIPHER 8
+#define NON_EVP_CIPHER 16
+#define AES_CTR_COMPAT 32
+#define CCM_MODE 64
+#define GCM_MODE 128
+
+
+#ifdef FIPS_SUPPORT
+/* May have FIPS support, must check dynamically if it is enabled */
+# define FORBIDDEN_IN_FIPS(P) (((P)->flags & NO_FIPS_CIPHER) && FIPS_mode())
+#else
+/* No FIPS support since the symbol FIPS_SUPPORT is undefined */
+# define FORBIDDEN_IN_FIPS(P) 0
+#endif
+
+extern ErlNifResourceType* evp_cipher_ctx_rtype;
+struct evp_cipher_ctx {
+    EVP_CIPHER_CTX* ctx;
+    int iv_len;
+#if !defined(HAVE_EVP_AES_CTR)
+    ErlNifEnv* env;
+    ERL_NIF_TERM state;
+#endif
+};
+
+ERL_NIF_TERM cipher_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+int init_cipher_ctx(ErlNifEnv *env);
+
+void init_cipher_types(ErlNifEnv* env);
+const struct cipher_type_t* get_cipher_type_no_key(ERL_NIF_TERM type);
+const struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len);
+
+int cmp_cipher_types(const void *keyp, const void *elemp);
+int cmp_cipher_types_no_key(const void *keyp, const void *elemp);
+
+ERL_NIF_TERM cipher_types_as_list(ErlNifEnv* env);
+
+#endif /* E_CIPHER_H__ */