diff options
Diffstat (limited to 'lib/crypto/c_src/crypto.c')
| -rw-r--r-- | lib/crypto/c_src/crypto.c | 185 |
1 files changed, 103 insertions, 82 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c index 6949df4b8e..4442692537 100644 --- a/lib/crypto/c_src/crypto.c +++ b/lib/crypto/c_src/crypto.c @@ -185,6 +185,7 @@ #if OPENSSL_VERSION_NUMBER >= PACKED_OPENSSL_VERSION_PLAIN(1,0,1) # define HAVE_EVP_AES_CTR +# define HAVE_AEAD # define HAVE_GCM # define HAVE_CMAC # if OPENSSL_VERSION_NUMBER < PACKED_OPENSSL_VERSION(1,0,1,'d') @@ -539,8 +540,8 @@ static ERL_NIF_TERM evp_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF static ERL_NIF_TERM rand_seed_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM aes_gcm_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); -static ERL_NIF_TERM aes_gcm_decrypt(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[]); #ifdef HAVE_GCM_EVP_DECRYPT_BUG static ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]); #endif @@ -637,8 +638,8 @@ static ErlNifFunc nif_funcs[] = { {"rand_seed_nif", 1, rand_seed_nif}, - {"aes_gcm_encrypt", 5, aes_gcm_encrypt}, - {"aes_gcm_decrypt", 5, aes_gcm_decrypt}, + {"aead_encrypt", 6, aead_encrypt}, + {"aead_decrypt", 6, aead_decrypt}, {"chacha20_poly1305_encrypt", 4, chacha20_poly1305_encrypt}, {"chacha20_poly1305_decrypt", 5, chacha20_poly1305_decrypt}, @@ -712,6 +713,9 @@ static ERL_NIF_TERM atom_onbasis; static ERL_NIF_TERM atom_aes_cfb8; static ERL_NIF_TERM atom_aes_cfb128; +#ifdef HAVE_GCM +static ERL_NIF_TERM atom_aes_gcm; +#endif #ifdef HAVE_ECB_IVEC_BUG static ERL_NIF_TERM atom_aes_ecb; static ERL_NIF_TERM atom_des_ecb; @@ -1152,6 +1156,9 @@ static int initialize(ErlNifEnv* env, ERL_NIF_TERM load_info) #endif atom_aes_cfb8 = enif_make_atom(env, "aes_cfb8"); atom_aes_cfb128 = enif_make_atom(env, "aes_cfb128"); +#ifdef HAVE_GCM + atom_aes_gcm = enif_make_atom(env, "aes_gcm"); +#endif #ifdef HAVE_ECB_IVEC_BUG atom_aes_ecb = enif_make_atom(env, "aes_ecb"); atom_des_ecb = enif_make_atom(env, "des_ecb"); @@ -2516,66 +2523,72 @@ static ERL_NIF_TERM aes_ctr_stream_encrypt(ErlNifEnv* env, int argc, const ERL_N } #endif /* !HAVE_EVP_AES_CTR */ -static ERL_NIF_TERM aes_gcm_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) -{/* (Key,Iv,AAD,In) */ -#if defined(HAVE_GCM) +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 out, out_tag; - int len; + ERL_NIF_TERM type, out, out_tag; + int len, ctx_ctrl_set_ivlen, ctx_ctrl_get_tag; - if (!enif_inspect_iolist_as_binary(env, argv[0], &key) - || (key.size != 16 && key.size != 24 && key.size != 32) - || !enif_inspect_binary(env, argv[1], &iv) || iv.size == 0 - || !enif_inspect_iolist_as_binary(env, argv[2], &aad) - || !enif_inspect_iolist_as_binary(env, argv[3], &in) - || !enif_get_uint(env, argv[4], &tag_len) || tag_len < 1 || tag_len > 16) { + 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); } - 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(); + /* Use cipher_type some day. Must check block_encrypt|decrypt first */ +#if defined(HAVE_GCM) + if ((type == atom_aes_gcm) + && (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 +#endif + enif_make_badarg(env); + 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 (EVP_EncryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1) - goto out_err; - - EVP_CIPHER_CTX_set_padding(ctx, 0); +#if defined(HAVE_GCM) + if (type == atom_aes_gcm) { + if (EVP_EncryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err; + } else +#endif + goto out_err; - if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, iv.size, 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, aad.data, aad.size) != 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; + if (EVP_EncryptUpdate(ctx, outp, &len, in.data, in.size) != 1) goto out_err; + if (EVP_EncryptFinal_ex(ctx, outp, &len) != 1) goto out_err; tagp = enif_make_new_binary(env, tag_len, &out_tag); - if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_GET_TAG, tag_len, tagp) != 1) - goto out_err; + 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: +out_err: EVP_CIPHER_CTX_free(ctx); return atom_error; @@ -2584,58 +2597,66 @@ out_err: #endif } -static ERL_NIF_TERM aes_gcm_decrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) -{/* (Key,Iv,AAD,In,Tag) */ -#if defined(HAVE_GCM_EVP_DECRYPT_BUG) - return aes_gcm_decrypt_NO_EVP(env, argc, argv); -#elif defined(HAVE_GCM) +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 out; - int len; + ERL_NIF_TERM type, out; + int len, ctx_ctrl_set_ivlen; - if (!enif_inspect_iolist_as_binary(env, argv[0], &key) - || (key.size != 16 && key.size != 24 && key.size != 32) - || !enif_inspect_binary(env, argv[1], &iv) || iv.size == 0 - || !enif_inspect_iolist_as_binary(env, argv[2], &aad) - || !enif_inspect_iolist_as_binary(env, argv[3], &in) - || !enif_inspect_iolist_as_binary(env, argv[4], &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); } - 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(); - - ctx = EVP_CIPHER_CTX_new(); + /* Use cipher_type some day. Must check block_encrypt|decrypt first */ +#if defined(HAVE_GCM) + if ((type == atom_aes_gcm) + && (iv.size > 0)) { + ctx_ctrl_set_ivlen = EVP_CTRL_GCM_SET_IVLEN; + 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); - if (EVP_DecryptInit_ex(ctx, cipher, NULL, NULL, NULL) != 1) - goto out_err; - if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, iv.size, NULL) != 1) - goto out_err; - if (EVP_DecryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) - goto out_err; - if (EVP_DecryptUpdate(ctx, NULL, &len, aad.data, aad.size) != 1) - goto out_err; + } else +#endif + enif_make_badarg(env); outp = enif_make_new_binary(env, in.size, &out); - if (EVP_DecryptUpdate(ctx, outp, &len, in.data, in.size) != 1) - goto out_err; - if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, tag.size, tag.data) != 1) - goto out_err; - if (EVP_DecryptFinal_ex(ctx, outp+len, &len) != 1) - goto out_err; + 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 (EVP_DecryptInit_ex(ctx, NULL, NULL, key.data, iv.data) != 1) goto out_err; + 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) + if (type == atom_aes_gcm) { + if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_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: @@ -2648,19 +2669,19 @@ out_err: #ifdef HAVE_GCM_EVP_DECRYPT_BUG static ERL_NIF_TERM aes_gcm_decrypt_NO_EVP(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) -{ +{/* (Type,Key,Iv,AAD,In,Tag) */ GCM128_CONTEXT *ctx; ErlNifBinary key, iv, aad, in, tag; AES_KEY aes_key; unsigned char *outp; ERL_NIF_TERM out; - if (!enif_inspect_iolist_as_binary(env, argv[0], &key) + if (!enif_inspect_iolist_as_binary(env, argv[1], &key) || AES_set_encrypt_key(key.data, key.size*8, &aes_key) != 0 - || !enif_inspect_binary(env, argv[1], &iv) || iv.size == 0 - || !enif_inspect_iolist_as_binary(env, argv[2], &aad) - || !enif_inspect_iolist_as_binary(env, argv[3], &in) - || !enif_inspect_iolist_as_binary(env, argv[4], &tag)) { + || !enif_inspect_binary(env, argv[2], &iv) || iv.size == 0 + || !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); } |