QPQ-AG/enacl
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Implement low level code for the authenticators.

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This commit is contained in:
Jesper Louis Andersen 2014-11-24 14:39:19 +01:00
parent 101c16e34a
commit 772a97d3db
1 changed files with 59 additions and 0 deletions
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59
c_src/enacl_nif.c
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@ -177,6 +177,11 @@ ERL_NIF_TERM enif_crypto_stream_NONCEBYTES(ErlNifEnv *env, int argc, ERL_NIF_TER
return enif_make_int64(env, crypto_stream_NONCEBYTES);
}
static
ERL_NIF_TERM enif_crypto_auth_KEYBYTES(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
return enif_make_int64(env, crypto_auth_KEYBYTES);
}
static
ERL_NIF_TERM enif_crypto_secretbox(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary key, nonce, padded_msg, padded_ciphertext;
@ -307,6 +312,56 @@ ERL_NIF_TERM enif_crypto_stream_xor(ErlNifEnv *env, int argc, ERL_NIF_TERM const
return enif_make_binary(env, &c);
}
static
ERL_NIF_TERM enif_crypto_auth(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary a,m,k;
if (
(argc != 2) ||
(!enif_inspect_iolist_as_binary(env, argv[0], &m)) ||
(!enif_inspect_iolist_as_binary(env, argv[1], &k))) {
return enif_make_badarg(env);
}
if (k.size != crypto_auth_KEYBYTES) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(crypto_auth_BYTES, &a)) {
return nacl_error_tuple(env, "alloc_failed");
}
crypto_auth(a.data, m.data, m.size, k.data);
return enif_make_binary(env, &a);
}
static
ERL_NIF_TERM enif_crypto_auth_verify(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary a, m, k;
if (
(argc != 3) ||
(!enif_inspect_iolist_as_binary(env, argv[0], &a)) ||
(!enif_inspect_iolist_as_binary(env, argv[1], &m)) ||
(!enif_inspect_iolist_as_binary(env, argv[2], &k))) {
return enif_make_badarg(env);
}
if (
(k.size != crypto_auth_KEYBYTES) ||
(a.size != crypto_auth_BYTES)) {
return enif_make_badarg(env);
}
if (0 == crypto_auth_verify(a.data, m.data, m.size, k.data)) {
return enif_make_atom(env, "true");
} else {
return enif_make_atom(env, "false");
}
}
/* Tie the knot to the Erlang world */
static ErlNifFunc nif_funcs[] = {
{"crypto_box_NONCEBYTES", 0, enif_crypto_box_NONCEBYTES},
@ -330,6 +385,10 @@ static ErlNifFunc nif_funcs[] = {
{"crypto_stream", 3, enif_crypto_stream, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_stream_xor", 3, enif_crypto_stream_xor, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_auth_KEYBYTES", 0, enif_crypto_auth_KEYBYTES},
{"crypto_auth", 2, enif_crypto_auth, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_auth_verify", 3, enif_crypto_auth_verify, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_hash", 1, enif_crypto_hash, ERL_NIF_DIRTY_JOB_CPU_BOUND}
};