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Add chacha stream function access.

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This commit is contained in:
Doug Huff
2015-10-28 05:47:49 +00:00
parent ca005d32f9
commit 4d5524db61
3 changed files with 153 additions and 0 deletions
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c_src/enacl_nif.c
+72
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@@ -641,6 +641,16 @@ ERL_NIF_TERM enif_crypto_secretbox_BOXZEROBYTES(ErlNifEnv *env, int argc, ERL_NI
return enif_make_int64(env, crypto_secretbox_BOXZEROBYTES);
}
static
ERL_NIF_TERM enif_crypto_stream_chacha20_KEYBYTES(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
return enif_make_int64(env, crypto_stream_chacha20_KEYBYTES);
}
static
ERL_NIF_TERM enif_crypto_stream_chacha20_NONCEBYTES(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
return enif_make_int64(env, crypto_stream_chacha20_NONCEBYTES);
}
static
ERL_NIF_TERM enif_crypto_stream_KEYBYTES(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
return enif_make_int64(env, crypto_stream_KEYBYTES);
@@ -756,6 +766,61 @@ ERL_NIF_TERM enif_crypto_secretbox_open(ErlNifEnv *env, int argc, ERL_NIF_TERM c
padded_ciphertext.size - crypto_secretbox_ZEROBYTES);
}
static
ERL_NIF_TERM enif_crypto_stream_chacha20(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary c, n, k;
ErlNifUInt64 clen;
if (
(argc != 3) ||
(!enif_get_uint64(env, argv[0], &clen)) ||
(!enif_inspect_binary(env, argv[1], &n)) ||
(!enif_inspect_binary(env, argv[2], &k))) {
return enif_make_badarg(env);
}
if (
(k.size != crypto_stream_chacha20_KEYBYTES) ||
(n.size != crypto_stream_chacha20_NONCEBYTES)) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(clen, &c)) {
return nacl_error_tuple(env, "alloc_failed");
}
crypto_stream_chacha20(c.data, c.size, n.data, k.data);
return enif_make_binary(env, &c);
}
static
ERL_NIF_TERM enif_crypto_stream_chacha20_xor(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary c, m, n, k;
if (
(argc != 3) ||
(!enif_inspect_iolist_as_binary(env, argv[0], &m)) ||
(!enif_inspect_binary(env, argv[1], &n)) ||
(!enif_inspect_binary(env, argv[2], &k))) {
return enif_make_badarg(env);
}
if (
(k.size != crypto_stream_chacha20_KEYBYTES) ||
(n.size != crypto_stream_chacha20_NONCEBYTES)) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(m.size, &c)) {
return nacl_error_tuple(env, "alloc_failed");
}
crypto_stream_chacha20_xor(c.data, m.data, m.size, n.data, k.data);
return enif_make_binary(env, &c);
}
static
ERL_NIF_TERM enif_crypto_stream(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary c, n, k;
@@ -1071,6 +1136,13 @@ static ErlNifFunc nif_funcs[] = {
{"crypto_secretbox_open_b", 3, enif_crypto_secretbox_open},
{"crypto_secretbox_open", 3, enif_crypto_secretbox_open, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_stream_chacha20_KEYBYTES", 0, enif_crypto_stream_chacha20_KEYBYTES},
{"crypto_stream_chacha20_NONCEBYTES", 0, enif_crypto_stream_chacha20_NONCEBYTES},
{"crypto_stream_chacha20_b", 3, enif_crypto_stream_chacha20},
{"crypto_stream_chacha20", 3, enif_crypto_stream_chacha20, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_stream_chacha20_xor_b", 3, enif_crypto_stream_chacha20_xor},
{"crypto_stream_chacha20_xor", 3, enif_crypto_stream_chacha20_xor, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_stream_KEYBYTES", 0, enif_crypto_stream_KEYBYTES},
{"crypto_stream_NONCEBYTES", 0, enif_crypto_stream_NONCEBYTES},
{"crypto_stream_b", 3, enif_crypto_stream},