200 lines
4.4 KiB
C
200 lines
4.4 KiB
C
#include "saltywitch.h"
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ERL_NIF_TERM saltywitch_pwhash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
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{
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ErlNifBinary pass, salt;
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ERL_NIF_TERM term;
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uint64_t len, ops, mem;
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unsigned char *out;
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int alg;
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ERL_NIF_TERM err = atom_badarg;
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ERL_NIF_TERM reason = atom_err_opaque;
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if (enif_get_uint64(env, argv[0], &len) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (enif_inspect_iolist_as_binary(env, argv[1], &pass) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (enif_inspect_binary(env, argv[2], &salt) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (salt.size != crypto_pwhash_SALTBYTES) {
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reason = atom_err_invalid_salt_size;
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goto badarg_FAULT;
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}
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if (enif_get_uint64(env, argv[3], &ops) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (ops > crypto_pwhash_OPSLIMIT_MAX) {
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reason = atom_err_pwhash_ops_too_large;
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goto badarg_FAULT;
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} else if (ops < crypto_pwhash_OPSLIMIT_MIN) {
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reason = atom_err_pwhash_ops_too_small;
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goto badarg_FAULT;
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}
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if (enif_get_uint64(env, argv[4], &mem) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (mem > crypto_pwhash_OPSLIMIT_MAX) {
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reason = atom_err_pwhash_mem_too_large;
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goto badarg_FAULT;
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} else if (mem < crypto_pwhash_OPSLIMIT_MIN) {
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reason = atom_err_pwhash_mem_too_small;
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goto badarg_FAULT;
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}
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if (enif_get_int(env, argv[5], &alg) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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out = enif_make_new_binary(env, len, &term);
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if (out == NULL) {
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reason = atom_err_nif_alloc;
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goto error_FAULT;
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}
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if (crypto_pwhash(out, len, (char *) pass.data, pass.size, salt.data, ops, mem, alg) != 0) {
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goto error_FAULT;
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}
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return term;
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error_FAULT:
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err = atom_error;
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badarg_FAULT:
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return saltywitch_exception(env, err, reason);
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}
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ERL_NIF_TERM saltywitch_pwhash_str(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
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{
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char out[crypto_pwhash_STRBYTES];
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uint64_t ops, mem;
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ErlNifBinary pass;
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ERL_NIF_TERM err = atom_badarg;
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ERL_NIF_TERM reason = atom_err_opaque;
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(void) argc;
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if (enif_inspect_iolist_as_binary(env, argv[0], &pass) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (enif_get_uint64(env, argv[1], &ops) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (enif_get_uint64(env, argv[2], &mem) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (crypto_pwhash_str(out, (char *) pass.data, pass.size, ops, mem) != 0) {
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goto error_FAULT;
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}
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return enif_make_string(env, out, ERL_NIF_LATIN1);
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error_FAULT:
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err = atom_error;
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badarg_FAULT:
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return saltywitch_exception(env, err, reason);
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}
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#include <stdio.h>
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ERL_NIF_TERM saltywitch_pwhash_str_verify(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
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{
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ErlNifBinary hash, pass;
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ERL_NIF_TERM err = atom_badarg;
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ERL_NIF_TERM reason = atom_err_opaque;
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(void) argc;
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if (enif_inspect_iolist_as_binary(env, argv[0], &hash) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (hash.size > crypto_pwhash_STRBYTES) {
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reason = atom_err_pwhash_too_long;
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goto badarg_FAULT;
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}
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if (enif_inspect_iolist_as_binary(env, argv[1], &pass) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (crypto_pwhash_str_verify((char *) hash.data, (char *) pass.data, pass.size) != 0) {
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reason = atom_err_verification_failed;
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goto error_FAULT;
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}
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return atom_ok;
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error_FAULT:
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err = atom_error;
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badarg_FAULT:
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return saltywitch_exception(env, err, reason);
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}
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ERL_NIF_TERM saltywitch_pwhash_str_needs_rehash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
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{
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ErlNifBinary hash;
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uint64_t ops, mem;
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ERL_NIF_TERM err = atom_badarg;
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ERL_NIF_TERM reason = atom_err_opaque;
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if (enif_inspect_binary(env, argv[0], &hash) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (hash.size > crypto_pwhash_STRBYTES) {
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reason = atom_err_pwhash_too_long;
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goto badarg_FAULT;
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}
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if (enif_get_uint64(env, argv[1], &ops) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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if (enif_get_uint64(env, argv[2], &mem) == false) {
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reason = atom_err_invalid_type;
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goto badarg_FAULT;
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}
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switch (crypto_pwhash_str_needs_rehash((char *) hash.data, ops, mem)) {
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case 0:
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return atom_ok;
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case 1:
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reason = atom_err_pwhash_needs_rehash;
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}
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err = atom_error;
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badarg_FAULT:
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return saltywitch_exception(env, err, reason);
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}
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