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author | Doug Hogan <[email protected]> | 2018-12-20 02:08:19 -0800 |
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committer | Doug Hogan <[email protected]> | 2018-12-20 02:30:53 -0800 |
commit | 96e9de399c0b63538649641eb4adb0eaa19b7852 (patch) | |
tree | 553235245d2a06278d969f4298712c765c6ab17c /lib/crypto/c_src/crypto.c | |
parent | eab44e595a209e7e09d135cfcc92e94fd1b061c8 (diff) | |
download | otp-96e9de399c0b63538649641eb4adb0eaa19b7852.tar.gz otp-96e9de399c0b63538649641eb4adb0eaa19b7852.tar.bz2 otp-96e9de399c0b63538649641eb4adb0eaa19b7852.zip |
Move AEAD functionality to a new file
Diffstat (limited to 'lib/crypto/c_src/crypto.c')
-rw-r--r-- | lib/crypto/c_src/crypto.c | 215 |
1 files changed, 1 insertions, 214 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c index 5c2f1aee2a..ce95eb140c 100644 --- a/lib/crypto/c_src/crypto.c +++ b/lib/crypto/c_src/crypto.c @@ -25,6 +25,7 @@ #include "common.h" +#include "aead.h" #include "aes.h" #include "bn.h" #include "chacha20.h" @@ -66,9 +67,6 @@ static ERL_NIF_TERM ecdh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF static ERL_NIF_TERM evp_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); static ERL_NIF_TERM evp_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM aead_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM aead_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); - /* helpers */ static void init_algorithms_types(ErlNifEnv*); #ifdef HAVE_EC @@ -763,217 +761,6 @@ static ERL_NIF_TERM block_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM return ret; } -static ERL_NIF_TERM aead_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) -{/* (Type,Key,Iv,AAD,In) */ -#if defined(HAVE_AEAD) - EVP_CIPHER_CTX *ctx; - const EVP_CIPHER *cipher = NULL; - ErlNifBinary key, iv, aad, in; - unsigned int tag_len; - unsigned char *outp, *tagp; - ERL_NIF_TERM type, out, out_tag; - int len, ctx_ctrl_set_ivlen, ctx_ctrl_get_tag; - - type = argv[0]; - - if (!enif_is_atom(env, type) - || !enif_inspect_iolist_as_binary(env, argv[1], &key) - || !enif_inspect_binary(env, argv[2], &iv) - || !enif_inspect_iolist_as_binary(env, argv[3], &aad) - || !enif_inspect_iolist_as_binary(env, argv[4], &in) - || !enif_get_uint(env, argv[5], &tag_len)) { - return enif_make_badarg(env); - } - - /* Use cipher_type some day. Must check block_encrypt|decrypt first */ -#if defined(HAVE_GCM) - if (type == atom_aes_gcm) { - if ((iv.size > 0) - && (1 <= tag_len && tag_len <= 16)) { - ctx_ctrl_set_ivlen = EVP_CTRL_GCM_SET_IVLEN; - ctx_ctrl_get_tag = EVP_CTRL_GCM_GET_TAG; - if (key.size == 16) cipher = EVP_aes_128_gcm(); - else if (key.size == 24) cipher = EVP_aes_192_gcm(); - else if (key.size == 32) cipher = EVP_aes_256_gcm(); - else enif_make_badarg(env); - } else - enif_make_badarg(env); - } else -#endif -#if defined(HAVE_CCM) - if (type == atom_aes_ccm) { - if ((7 <= iv.size && iv.size <= 13) - && (4 <= tag_len && tag_len <= 16) - && ((tag_len & 1) == 0) - ) { - ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN; - ctx_ctrl_get_tag = EVP_CTRL_CCM_GET_TAG; - if (key.size == 16) cipher = EVP_aes_128_ccm(); - else if (key.size == 24) cipher = EVP_aes_192_ccm(); - else if (key.size == 32) cipher = EVP_aes_256_ccm(); - else enif_make_badarg(env); - } else - enif_make_badarg(env); - } else -#endif -#if defined(HAVE_CHACHA20_POLY1305) - if (type == atom_chacha20_poly1305) { - if ((key.size == 32) - && (1 <= iv.size && iv.size <= 16) - && (tag_len == 16) - ) { - ctx_ctrl_set_ivlen = EVP_CTRL_AEAD_SET_IVLEN; - ctx_ctrl_get_tag = EVP_CTRL_AEAD_GET_TAG, - cipher = EVP_chacha20_poly1305(); - } else enif_make_badarg(env); - } else -#endif - return enif_raise_exception(env, atom_notsup); - - ctx = EVP_CIPHER_CTX_new(); - if (EVP_EncryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1) goto out_err; - if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_ivlen, iv.size, NULL) != 1) goto out_err; - -#if defined(HAVE_CCM) - if (type == atom_aes_ccm) { - if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tag_len, NULL) != 1) goto out_err; - if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err; - if (EVP_EncryptUpdate(ctx, NULL, &len, NULL, in.size) != 1) goto out_err; - } else -#endif - if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err; - - if (EVP_EncryptUpdate(ctx, NULL, &len, aad.data, aad.size) != 1) goto out_err; - - outp = enif_make_new_binary(env, in.size, &out); - - if (EVP_EncryptUpdate(ctx, outp, &len, in.data, in.size) != 1) goto out_err; - if (EVP_EncryptFinal_ex(ctx, outp/*+len*/, &len) != 1) goto out_err; - - tagp = enif_make_new_binary(env, tag_len, &out_tag); - - if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_get_tag, tag_len, tagp) != 1) goto out_err; - - EVP_CIPHER_CTX_free(ctx); - CONSUME_REDS(env, in); - return enif_make_tuple2(env, out, out_tag); - -out_err: - EVP_CIPHER_CTX_free(ctx); - return atom_error; - -#else - return enif_raise_exception(env, atom_notsup); -#endif -} - -static ERL_NIF_TERM aead_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) -{/* (Type,Key,Iv,AAD,In,Tag) */ -#if defined(HAVE_AEAD) - EVP_CIPHER_CTX *ctx; - const EVP_CIPHER *cipher = NULL; - ErlNifBinary key, iv, aad, in, tag; - unsigned char *outp; - ERL_NIF_TERM type, out; - int len, ctx_ctrl_set_ivlen, ctx_ctrl_set_tag; - - type = argv[0]; -#if defined(HAVE_GCM_EVP_DECRYPT_BUG) - if (type == atom_aes_gcm) - return aes_gcm_decrypt_NO_EVP(env, argc, argv); -#endif - - if (!enif_is_atom(env, type) - || !enif_inspect_iolist_as_binary(env, argv[1], &key) - || !enif_inspect_binary(env, argv[2], &iv) - || !enif_inspect_iolist_as_binary(env, argv[3], &aad) - || !enif_inspect_iolist_as_binary(env, argv[4], &in) - || !enif_inspect_iolist_as_binary(env, argv[5], &tag)) { - return enif_make_badarg(env); - } - - /* Use cipher_type some day. Must check block_encrypt|decrypt first */ -#if defined(HAVE_GCM) - if (type == atom_aes_gcm) { - if (iv.size > 0) { - ctx_ctrl_set_ivlen = EVP_CTRL_GCM_SET_IVLEN; - ctx_ctrl_set_tag = EVP_CTRL_GCM_SET_TAG; - if (key.size == 16) cipher = EVP_aes_128_gcm(); - else if (key.size == 24) cipher = EVP_aes_192_gcm(); - else if (key.size == 32) cipher = EVP_aes_256_gcm(); - else enif_make_badarg(env); - } else - enif_make_badarg(env); - } else -#endif -#if defined(HAVE_CCM) - if (type == atom_aes_ccm) { - if (iv.size > 0) { - ctx_ctrl_set_ivlen = EVP_CTRL_CCM_SET_IVLEN; - if (key.size == 16) cipher = EVP_aes_128_ccm(); - else if (key.size == 24) cipher = EVP_aes_192_ccm(); - else if (key.size == 32) cipher = EVP_aes_256_ccm(); - else enif_make_badarg(env); - } else - enif_make_badarg(env); - } else -#endif -#if defined(HAVE_CHACHA20_POLY1305) - if (type == atom_chacha20_poly1305) { - if ((key.size == 32) - && (1 <= iv.size && iv.size <= 16) - && tag.size == 16 - ) { - ctx_ctrl_set_ivlen = EVP_CTRL_AEAD_SET_IVLEN; - ctx_ctrl_set_tag = EVP_CTRL_AEAD_SET_TAG; - cipher = EVP_chacha20_poly1305(); - } else enif_make_badarg(env); - } else -#endif - return enif_raise_exception(env, atom_notsup); - - outp = enif_make_new_binary(env, in.size, &out); - - ctx = EVP_CIPHER_CTX_new(); - if (EVP_DecryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1) goto out_err; - if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_ivlen, iv.size, NULL) != 1) goto out_err; - -#if defined(HAVE_CCM) - if (type == atom_aes_ccm) { - if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tag.size, tag.data) != 1) goto out_err; - } -#endif - - if (EVP_DecryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err; - -#if defined(HAVE_CCM) - if (type == atom_aes_ccm) { - if (1 != EVP_DecryptUpdate(ctx, NULL, &len, NULL, in.size)) goto out_err; - } -#endif - - if (EVP_DecryptUpdate(ctx, NULL, &len, aad.data, aad.size) != 1) goto out_err; - if (EVP_DecryptUpdate(ctx, outp, &len, in.data, in.size) != 1) goto out_err; - -#if defined(HAVE_GCM) || defined(HAVE_CHACHA20_POLY1305) - if (type == atom_aes_gcm) { - if (EVP_CIPHER_CTX_ctrl(ctx, ctx_ctrl_set_tag, tag.size, tag.data) != 1) goto out_err; - if (EVP_DecryptFinal_ex(ctx, outp+len, &len) != 1) goto out_err; - } -#endif - EVP_CIPHER_CTX_free(ctx); - - CONSUME_REDS(env, in); - return out; - -out_err: - EVP_CIPHER_CTX_free(ctx); - return atom_error; -#else - return enif_raise_exception(env, atom_notsup); -#endif -} - static ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) {/* (Data1, Data2) */ ErlNifBinary d1, d2; |