diff options
Diffstat (limited to 'lib/crypto/c_src/cipher.h')
-rw-r--r-- | lib/crypto/c_src/cipher.h | 73 |
1 files changed, 73 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..6b43afea99 --- /dev/null +++ b/lib/crypto/c_src/cipher.h @@ -0,0 +1,73 @@ +/* + * %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 + + +#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 init_cipher_ctx(ErlNifEnv *env); + +void init_cipher_types(ErlNifEnv* env); +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); + +ERL_NIF_TERM cipher_types_as_list(ErlNifEnv* env); + +#endif /* E_CIPHER_H__ */ |