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Add bindings to the libsodium DSA operations 'crypto_sign_detached' and 'crypto_sign_verify_detached'

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This commit is contained in:
Joel Stanley
2015-07-17 15:15:56 -05:00
committed by Parnell Springmeyer
parent 89e28feab8
commit 7e7ac67fb3
4 changed files with 176 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files
c_src/enacl_nif.c
+93 -21
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@@ -322,7 +322,7 @@ ERL_NIF_TERM enif_crypto_box_open(ErlNifEnv *env, int argc, ERL_NIF_TERM const a
static
ERL_NIF_TERM enif_crypto_box_beforenm(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary k, pk, sk;
if (
(argc != 2) ||
(!enif_inspect_binary(env, argv[0], &pk)) ||
@@ -331,20 +331,20 @@ ERL_NIF_TERM enif_crypto_box_beforenm(ErlNifEnv *env, int argc, ERL_NIF_TERM con
(sk.size != crypto_box_SECRETKEYBYTES)) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(crypto_box_BEFORENMBYTES, &k)) {
return nacl_error_tuple(env, "alloc_failed");
}
crypto_box_beforenm(k.data, pk.data, sk.data);
return enif_make_binary(env, &k);
}
static
ERL_NIF_TERM enif_crypto_box_afternm(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary result, m, nonce, k;
if (
(argc != 3) ||
(!enif_inspect_iolist_as_binary(env, argv[0], &m)) ||
@@ -355,13 +355,13 @@ ERL_NIF_TERM enif_crypto_box_afternm(ErlNifEnv *env, int argc, ERL_NIF_TERM cons
(k.size != crypto_box_BEFORENMBYTES)) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(m.size, &result)) {
return nacl_error_tuple(env, "alloc_failed");
}
crypto_box_afternm(result.data, m.data, m.size, nonce.data, k.data);
return enif_make_sub_binary(
env,
enif_make_binary(env, &result),
@@ -372,7 +372,7 @@ ERL_NIF_TERM enif_crypto_box_afternm(ErlNifEnv *env, int argc, ERL_NIF_TERM cons
static
ERL_NIF_TERM enif_crypto_box_open_afternm(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary result, m, nonce, k;
if (
(argc != 3) ||
(!enif_inspect_iolist_as_binary(env, argv[0], &m)) ||
@@ -383,16 +383,16 @@ ERL_NIF_TERM enif_crypto_box_open_afternm(ErlNifEnv *env, int argc, ERL_NIF_TERM
(k.size != crypto_box_BEFORENMBYTES)) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(m.size, &result)) {
return nacl_error_tuple(env, "alloc_failed");
}
if (0 != crypto_box_open_afternm(result.data, m.data, m.size, nonce.data, k.data)) {
enif_release_binary(&result);
return nacl_error_tuple(env, "failed_verification");
}
return enif_make_sub_binary(
env,
enif_make_binary(env, &result),
@@ -432,6 +432,11 @@ ERL_NIF_TERM enif_crypto_sign_keypair(ErlNifEnv *env, int argc, ERL_NIF_TERM con
return enif_make_tuple2(env, enif_make_binary(env, &pk), enif_make_binary(env, &sk));
}
/*
int crypto_sign(unsigned char *sm, unsigned long long *smlen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *sk);
*/
static
ERL_NIF_TERM enif_crypto_sign(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary m, sk, sm;
@@ -457,6 +462,11 @@ ERL_NIF_TERM enif_crypto_sign(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[
return enif_make_sub_binary(env, enif_make_binary(env, &sm), 0, smlen);
}
/*
int crypto_sign_open(unsigned char *m, unsigned long long *mlen,
const unsigned char *sm, unsigned long long smlen,
const unsigned char *pk);
*/
static
ERL_NIF_TERM enif_crypto_sign_open(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary m, sm, pk;
@@ -485,6 +495,65 @@ ERL_NIF_TERM enif_crypto_sign_open(ErlNifEnv *env, int argc, ERL_NIF_TERM const
}
}
/*
int crypto_sign_detached(unsigned char *sig, unsigned long long *siglen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *sk);
*/
static
ERL_NIF_TERM enif_crypto_sign_detached(ErlNifEnv* env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary m, sk, sig;
unsigned long long siglen;
if (
(argc != 2) ||
(!enif_inspect_iolist_as_binary(env, argv[0], &m)) ||
(!enif_inspect_binary(env, argv[1], &sk))) {
return enif_make_badarg(env);
}
if (sk.size != crypto_sign_SECRETKEYBYTES) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(crypto_sign_BYTES, &sig)) {
return nacl_error_tuple(env, "alloc_failed");
}
crypto_sign_detached(sig.data, &siglen, m.data, m.size, sk.data);
return enif_make_sub_binary(env, enif_make_binary(env, &sig), 0, siglen);
}
/*
int crypto_sign_verify_detached(const unsigned char *sig,
const unsigned char *m,
unsigned long long mlen,
const unsigned char *pk);
*/
static
ERL_NIF_TERM enif_crypto_sign_verify_detached(ErlNifEnv* env, int argc, ERL_NIF_TERM const argv[]) {
ErlNifBinary m, sig, pk;
if (
(argc != 3) ||
(!enif_inspect_binary(env, argv[0], &sig)) ||
(!enif_inspect_iolist_as_binary(env, argv[1], &m)) ||
(!enif_inspect_binary(env, argv[2], &pk))) {
return enif_make_badarg(env);
}
if (pk.size != crypto_sign_PUBLICKEYBYTES) {
return enif_make_badarg(env);
}
if (0 == crypto_sign_verify_detached(sig.data, m.data, m.size, pk.data)) {
return enif_make_atom(env, "true");
} else {
return enif_make_atom(env, "false");
}
}
/* Secret key cryptography */
static
@@ -770,17 +839,17 @@ ERL_NIF_TERM enif_randombytes(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[
{
size_t req_size;
ErlNifBinary result;
if ((argc != 1) || (!enif_get_uint64(env, argv[0], &req_size))) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(req_size, &result)) {
return nacl_error_tuple(env, "alloc_failed");
}
randombytes(result.data, result.size);
return enif_make_binary(env, &result);
}
@@ -841,7 +910,7 @@ static
ERL_NIF_TERM enif_scramble_block_16(ErlNifEnv *env, int argc, ERL_NIF_TERM const argv[])
{
ErlNifBinary in, out, key;
if (
(argc != 2) ||
(!enif_inspect_binary(env, argv[0], &in)) ||
@@ -849,13 +918,13 @@ ERL_NIF_TERM enif_scramble_block_16(ErlNifEnv *env, int argc, ERL_NIF_TERM const
(in.size != 16) || (key.size != 32)) {
return enif_make_badarg(env);
}
if (!enif_alloc_binary(in.size, &out)) {
return nacl_error_tuple(env, "alloc_failed");
}
crypto_block(out.data, in.data, key.data);
return enif_make_binary(env, &out);
}
@@ -886,6 +955,9 @@ static ErlNifFunc nif_funcs[] = {
{"crypto_sign_open_b", 2, enif_crypto_sign_open},
{"crypto_sign_open", 2, enif_crypto_sign_open, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_sign_detached", 2, enif_crypto_sign_detached, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_sign_verify_detached", 3, enif_crypto_sign_verify_detached, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"crypto_secretbox_NONCEBYTES", 0, enif_crypto_secretbox_NONCEBYTES},
{"crypto_secretbox_ZEROBYTES", 0, enif_crypto_secretbox_ZEROBYTES},
{"crypto_secretbox_BOXZEROBYTES", 0, enif_crypto_secretbox_BOXZEROBYTES},
@@ -931,7 +1003,7 @@ static ErlNifFunc nif_funcs[] = {
{"randombytes_b", 1, enif_randombytes},
{"randombytes", 1, enif_randombytes, ERL_NIF_DIRTY_JOB_CPU_BOUND},
{"scramble_block_16", 2, enif_scramble_block_16}
};