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author | Doug Hogan <[email protected]> | 2018-12-20 02:02:32 -0800 |
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committer | Doug Hogan <[email protected]> | 2018-12-20 02:30:33 -0800 |
commit | 50aa0a2fd57823b973a07f38598c5c318f6df9d0 (patch) | |
tree | 1474fc5b273581fefdcf31766cb04fb7adddf635 /lib/crypto/c_src/cipher.c | |
parent | 703f107c63791735b94bf0d6cafb34b566c31925 (diff) | |
download | otp-50aa0a2fd57823b973a07f38598c5c318f6df9d0.tar.gz otp-50aa0a2fd57823b973a07f38598c5c318f6df9d0.tar.bz2 otp-50aa0a2fd57823b973a07f38598c5c318f6df9d0.zip |
Move cipher utility functions to a new file
Diffstat (limited to 'lib/crypto/c_src/cipher.c')
-rw-r--r-- | lib/crypto/c_src/cipher.c | 82 |
1 files changed, 82 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..bef61ab2d9 --- /dev/null +++ b/lib/crypto/c_src/cipher.c @@ -0,0 +1,82 @@ +#include "cipher.h" + +#ifdef OPENSSL_NO_DES +#define COND_NO_DES_PTR(Ptr) (NULL) +#else +#define COND_NO_DES_PTR(Ptr) (Ptr) +#endif + +static struct cipher_type_t cipher_types[] = +{ + {{"rc2_cbc"}, +#ifndef OPENSSL_NO_RC2 + {&EVP_rc2_cbc} +#else + {NULL} +#endif + }, + {{"des_cbc"}, {COND_NO_DES_PTR(&EVP_des_cbc)}}, + {{"des_cfb"}, {COND_NO_DES_PTR(&EVP_des_cfb8)}}, + {{"des_ecb"}, {COND_NO_DES_PTR(&EVP_des_ecb)}}, + {{"des_ede3_cbc"}, {COND_NO_DES_PTR(&EVP_des_ede3_cbc)}}, + {{"des_ede3_cbf"}, /* Misspelled, retained */ +#ifdef HAVE_DES_ede3_cfb_encrypt + {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)} +#else + {NULL} +#endif + }, + {{"des_ede3_cfb"}, +#ifdef HAVE_DES_ede3_cfb_encrypt + {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)} +#else + {NULL} +#endif + }, + {{"blowfish_cbc"}, {&EVP_bf_cbc}}, + {{"blowfish_cfb64"}, {&EVP_bf_cfb64}}, + {{"blowfish_ofb64"}, {&EVP_bf_ofb}}, + {{"blowfish_ecb"}, {&EVP_bf_ecb}}, + {{"aes_cbc"}, {&EVP_aes_128_cbc}, 16}, + {{"aes_cbc"}, {&EVP_aes_192_cbc}, 24}, + {{"aes_cbc"}, {&EVP_aes_256_cbc}, 32}, + {{"aes_cbc128"}, {&EVP_aes_128_cbc}}, + {{"aes_cbc256"}, {&EVP_aes_256_cbc}}, + {{"aes_cfb8"}, {&EVP_aes_128_cfb8}}, + {{"aes_cfb128"}, {&EVP_aes_128_cfb128}}, + {{"aes_ecb"}, {&EVP_aes_128_ecb}, 16}, + {{"aes_ecb"}, {&EVP_aes_192_ecb}, 24}, + {{"aes_ecb"}, {&EVP_aes_256_ecb}, 32}, + {{NULL}} +}; + +#ifdef HAVE_EVP_AES_CTR +ErlNifResourceType* evp_cipher_ctx_rtype; + +void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) { + EVP_CIPHER_CTX_free(ctx->ctx); +} +#endif + +void init_cipher_types(ErlNifEnv* env) +{ + struct cipher_type_t* p = cipher_types; + + for (p = cipher_types; p->type.str; p++) { + 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 */ +} + +struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len) +{ + struct cipher_type_t* p = NULL; + for (p = cipher_types; p->type.atom != atom_false; p++) { + if (type == p->type.atom && (!p->key_len || key_len == p->key_len)) { + return p; + } + } + return NULL; +} |