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libsodium.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Frank Denis <[email protected]> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_libsodium.h"
#include "zend_attributes.h"
#include "zend_exceptions.h"
#include <sodium.h>
#include <stdint.h>
#include <string.h>
#define PHP_SODIUM_ZSTR_TRUNCATE(zs, len) do { ZSTR_LEN(zs) = (len); } while(0)
static zend_class_entry *sodium_exception_ce;
#if (defined(__amd64) || defined(__amd64__) || defined(__x86_64__) || defined(__i386__) || \
defined(_M_AMD64) || defined(_M_IX86))
# define HAVE_AESGCM 1
#endif
static zend_always_inline zend_string *zend_string_checked_alloc(size_t len, int persistent)
{
zend_string *zs;
if (ZEND_MM_ALIGNED_SIZE(_ZSTR_STRUCT_SIZE(len)) < len) {
zend_error_noreturn(E_ERROR, "Memory allocation too large (%zu bytes)", len);
}
zs = zend_string_alloc(len, persistent);
ZSTR_VAL(zs)[len] = 0;
return zs;
}
#ifndef crypto_kdf_BYTES_MIN
# define crypto_kdf_BYTES_MIN 16
# define crypto_kdf_BYTES_MAX 64
# define crypto_kdf_CONTEXTBYTES 8
# define crypto_kdf_KEYBYTES 32
#endif
#ifndef crypto_kx_SEEDBYTES
# define crypto_kx_SEEDBYTES 32
# define crypto_kx_SESSIONKEYBYTES 32
# define crypto_kx_PUBLICKEYBYTES 32
# define crypto_kx_SECRETKEYBYTES 32
#endif
#include "libsodium_arginfo.h"
#ifndef crypto_aead_chacha20poly1305_IETF_KEYBYTES
# define crypto_aead_chacha20poly1305_IETF_KEYBYTES crypto_aead_chacha20poly1305_KEYBYTES
#endif
#ifndef crypto_aead_chacha20poly1305_IETF_NSECBYTES
# define crypto_aead_chacha20poly1305_IETF_NSECBYTES crypto_aead_chacha20poly1305_NSECBYTES
#endif
#ifndef crypto_aead_chacha20poly1305_IETF_ABYTES
# define crypto_aead_chacha20poly1305_IETF_ABYTES crypto_aead_chacha20poly1305_ABYTES
#endif
#if defined(crypto_secretstream_xchacha20poly1305_ABYTES) && SODIUM_LIBRARY_VERSION_MAJOR < 10
# undef crypto_secretstream_xchacha20poly1305_ABYTES
#endif
#ifndef crypto_pwhash_OPSLIMIT_MIN
# define crypto_pwhash_OPSLIMIT_MIN crypto_pwhash_OPSLIMIT_INTERACTIVE
#endif
#ifndef crypto_pwhash_MEMLIMIT_MIN
# define crypto_pwhash_MEMLIMIT_MIN crypto_pwhash_MEMLIMIT_INTERACTIVE
#endif
#ifndef crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MIN
# define crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MIN crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_INTERACTIVE
#endif
#ifndef crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MIN
# define crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MIN crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_INTERACTIVE
#endif
/* Load after the "standard" module in order to give it
* priority in registering argon2i/argon2id password hashers.
*/
static const zend_module_dep sodium_deps[] = {
ZEND_MOD_REQUIRED("standard")
ZEND_MOD_END
};
zend_module_entry sodium_module_entry = {
STANDARD_MODULE_HEADER_EX,
NULL,
sodium_deps,
"sodium",
ext_functions,
PHP_MINIT(sodium),
PHP_MSHUTDOWN(sodium),
NULL,
NULL,
PHP_MINFO(sodium),
PHP_SODIUM_VERSION,
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_SODIUM
ZEND_GET_MODULE(sodium)
#endif
/* Remove argument information from backtrace to prevent information leaks */
static void sodium_remove_param_values_from_backtrace(zend_object *obj) {
zval rv;
zval *trace = zend_read_property_ex(zend_get_exception_base(obj), obj, ZSTR_KNOWN(ZEND_STR_TRACE), /* silent */ false, &rv);
if (trace && Z_TYPE_P(trace) == IS_ARRAY) {
zval *frame;
ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(trace), frame) {
if (Z_TYPE_P(frame) == IS_ARRAY) {
zval *args = zend_hash_find(Z_ARRVAL_P(frame), ZSTR_KNOWN(ZEND_STR_ARGS));
if (args) {
zval_ptr_dtor(args);
ZVAL_EMPTY_ARRAY(args);
}
}
} ZEND_HASH_FOREACH_END();
}
}
static zend_object *sodium_exception_create_object(zend_class_entry *ce) {
zend_object *obj = zend_ce_exception->create_object(ce);
sodium_remove_param_values_from_backtrace(obj);
return obj;
}
static void sodium_separate_string(zval *zv) {
ZEND_ASSERT(Z_TYPE_P(zv) == IS_STRING);
if (!Z_REFCOUNTED_P(zv) || Z_REFCOUNT_P(zv) > 1) {
zend_string *copy = zend_string_init(Z_STRVAL_P(zv), Z_STRLEN_P(zv), 0);
Z_TRY_DELREF_P(zv);
ZVAL_STR(zv, copy);
}
}
PHP_MINIT_FUNCTION(sodium)
{
if (sodium_init() < 0) {
zend_error(E_ERROR, "sodium_init()");
}
sodium_exception_ce = register_class_SodiumException(zend_ce_exception);
sodium_exception_ce->create_object = sodium_exception_create_object;
#if SODIUM_LIBRARY_VERSION_MAJOR > 9 || (SODIUM_LIBRARY_VERSION_MAJOR == 9 && SODIUM_LIBRARY_VERSION_MINOR >= 6)
if (FAILURE == PHP_MINIT(sodium_password_hash)(INIT_FUNC_ARGS_PASSTHRU)) {
return FAILURE;
}
#endif
register_libsodium_symbols(module_number);
return SUCCESS;
}
PHP_MSHUTDOWN_FUNCTION(sodium)
{
randombytes_close();
return SUCCESS;
}
PHP_MINFO_FUNCTION(sodium)
{
php_info_print_table_start();
php_info_print_table_row(2, "sodium support", "enabled");
php_info_print_table_row(2, "libsodium headers version", SODIUM_VERSION_STRING);
php_info_print_table_row(2, "libsodium library version", sodium_version_string());
php_info_print_table_end();
}
PHP_FUNCTION(sodium_memzero)
{
zval *buf_zv;
if (zend_parse_parameters(ZEND_NUM_ARGS(),
"z", &buf_zv) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
ZVAL_DEREF(buf_zv);
if (Z_TYPE_P(buf_zv) != IS_STRING) {
zend_throw_exception(sodium_exception_ce, "a PHP string is required", 0);
RETURN_THROWS();
}
if (Z_REFCOUNTED_P(buf_zv) && Z_REFCOUNT_P(buf_zv) == 1) {
char *buf = Z_STRVAL(*buf_zv);
size_t buf_len = Z_STRLEN(*buf_zv);
if (buf_len > 0) {
sodium_memzero(buf, (size_t) buf_len);
}
}
convert_to_null(buf_zv);
}
PHP_FUNCTION(sodium_increment)
{
zval *val_zv;
unsigned char *val;
size_t val_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(),
"z", &val_zv) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
ZVAL_DEREF(val_zv);
if (Z_TYPE_P(val_zv) != IS_STRING) {
zend_throw_exception(sodium_exception_ce, "a PHP string is required", 0);
RETURN_THROWS();
}
sodium_separate_string(val_zv);
val = (unsigned char *) Z_STRVAL(*val_zv);
val_len = Z_STRLEN(*val_zv);
sodium_increment(val, val_len);
}
PHP_FUNCTION(sodium_add)
{
zval *val_zv;
unsigned char *val;
unsigned char *addv;
size_t val_len;
size_t addv_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(),
"zs", &val_zv, &addv, &addv_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
ZVAL_DEREF(val_zv);
if (Z_TYPE_P(val_zv) != IS_STRING) {
zend_throw_exception(sodium_exception_ce, "PHP strings are required", 0);
RETURN_THROWS();
}
sodium_separate_string(val_zv);
val = (unsigned char *) Z_STRVAL(*val_zv);
val_len = Z_STRLEN(*val_zv);
if (val_len != addv_len) {
zend_argument_error(sodium_exception_ce, 1, "and argument #2 ($string_2) must have the same length");
RETURN_THROWS();
}
sodium_add(val, addv, val_len);
}
PHP_FUNCTION(sodium_memcmp)
{
char *buf1;
char *buf2;
size_t len1;
size_t len2;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss",
&buf1, &len1,
&buf2, &len2) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (len1 != len2) {
zend_argument_error(sodium_exception_ce, 1, "and argument #2 ($string_2) must have the same length");
RETURN_THROWS();
}
RETURN_LONG(sodium_memcmp(buf1, buf2, len1));
}
PHP_FUNCTION(sodium_crypto_shorthash)
{
zend_string *hash;
unsigned char *key;
unsigned char *msg;
size_t key_len;
size_t msg_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss",
&msg, &msg_len,
&key, &key_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (key_len != crypto_shorthash_KEYBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_SHORTHASH_KEYBYTES bytes long");
RETURN_THROWS();
}
hash = zend_string_alloc(crypto_shorthash_BYTES, 0);
if (crypto_shorthash((unsigned char *) ZSTR_VAL(hash), msg,
(unsigned long long) msg_len, key) != 0) {
zend_string_efree(hash);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(hash)[crypto_shorthash_BYTES] = 0;
RETURN_NEW_STR(hash);
}
PHP_FUNCTION(sodium_crypto_secretbox)
{
zend_string *ciphertext;
unsigned char *key;
unsigned char *msg;
unsigned char *nonce;
size_t key_len;
size_t msg_len;
size_t nonce_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sss",
&msg, &msg_len,
&nonce, &nonce_len,
&key, &key_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (nonce_len != crypto_secretbox_NONCEBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_SECRETBOX_NONCEBYTES bytes long");
RETURN_THROWS();
}
if (key_len != crypto_secretbox_KEYBYTES) {
zend_argument_error(sodium_exception_ce, 3, "must be SODIUM_CRYPTO_SECRETBOX_KEYBYTES bytes long");
RETURN_THROWS();
}
if (SIZE_MAX - msg_len <= crypto_secretbox_MACBYTES) {
zend_throw_exception(sodium_exception_ce, "arithmetic overflow", 0);
RETURN_THROWS();
}
ciphertext = zend_string_alloc((size_t) msg_len + crypto_secretbox_MACBYTES, 0);
if (crypto_secretbox_easy((unsigned char *) ZSTR_VAL(ciphertext),
msg, (unsigned long long) msg_len,
nonce, key) != 0) {
zend_string_efree(ciphertext);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(ciphertext)[msg_len + crypto_secretbox_MACBYTES] = 0;
RETURN_NEW_STR(ciphertext);
}
PHP_FUNCTION(sodium_crypto_secretbox_open)
{
zend_string *msg;
unsigned char *key;
unsigned char *ciphertext;
unsigned char *nonce;
size_t key_len;
size_t ciphertext_len;
size_t nonce_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sss",
&ciphertext, &ciphertext_len,
&nonce, &nonce_len,
&key, &key_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (nonce_len != crypto_secretbox_NONCEBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_SECRETBOX_NONCEBYTES bytes long");
RETURN_THROWS();
}
if (key_len != crypto_secretbox_KEYBYTES) {
zend_argument_error(sodium_exception_ce, 3, "must be SODIUM_CRYPTO_SECRETBOX_KEYBYTES bytes long");
RETURN_THROWS();
}
if (ciphertext_len < crypto_secretbox_MACBYTES) {
RETURN_FALSE;
}
msg = zend_string_alloc
((size_t) ciphertext_len - crypto_secretbox_MACBYTES, 0);
if (crypto_secretbox_open_easy((unsigned char *) ZSTR_VAL(msg), ciphertext,
(unsigned long long) ciphertext_len,
nonce, key) != 0) {
zend_string_efree(msg);
RETURN_FALSE;
} else {
ZSTR_VAL(msg)[ciphertext_len - crypto_secretbox_MACBYTES] = 0;
RETURN_NEW_STR(msg);
}
}
PHP_FUNCTION(sodium_crypto_generichash)
{
zend_string *hash;
unsigned char *key = NULL;
unsigned char *msg;
zend_long hash_len = crypto_generichash_BYTES;
size_t key_len = 0;
size_t msg_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|sl",
&msg, &msg_len,
&key, &key_len,
&hash_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (hash_len < crypto_generichash_BYTES_MIN ||
hash_len > crypto_generichash_BYTES_MAX) {
zend_throw_exception(sodium_exception_ce, "unsupported output length", 0);
RETURN_THROWS();
}
if (key_len != 0 &&
(key_len < crypto_generichash_KEYBYTES_MIN ||
key_len > crypto_generichash_KEYBYTES_MAX)) {
zend_throw_exception(sodium_exception_ce, "unsupported key length", 0);
RETURN_THROWS();
}
hash = zend_string_alloc(hash_len, 0);
if (crypto_generichash((unsigned char *) ZSTR_VAL(hash), (size_t) hash_len,
msg, (unsigned long long) msg_len,
key, (size_t) key_len) != 0) {
zend_string_efree(hash);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(hash)[hash_len] = 0;
RETURN_NEW_STR(hash);
}
PHP_FUNCTION(sodium_crypto_generichash_init)
{
crypto_generichash_state state_tmp;
zend_string *state;
unsigned char *key = NULL;
size_t state_len = sizeof (crypto_generichash_state);
zend_long hash_len = crypto_generichash_BYTES;
size_t key_len = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|sl",
&key, &key_len,
&hash_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (hash_len < crypto_generichash_BYTES_MIN ||
hash_len > crypto_generichash_BYTES_MAX) {
zend_throw_exception(sodium_exception_ce, "unsupported output length", 0);
RETURN_THROWS();
}
if (key_len != 0 &&
(key_len < crypto_generichash_KEYBYTES_MIN ||
key_len > crypto_generichash_KEYBYTES_MAX)) {
zend_throw_exception(sodium_exception_ce, "unsupported key length", 0);
RETURN_THROWS();
}
memset(&state_tmp, 0, sizeof state_tmp);
if (crypto_generichash_init((void *) &state_tmp, key, (size_t) key_len,
(size_t) hash_len) != 0) {
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
state = zend_string_alloc(state_len, 0);
memcpy(ZSTR_VAL(state), &state_tmp, state_len);
sodium_memzero(&state_tmp, sizeof state_tmp);
ZSTR_VAL(state)[state_len] = 0;
RETURN_STR(state);
}
PHP_FUNCTION(sodium_crypto_generichash_update)
{
crypto_generichash_state state_tmp;
zval *state_zv;
unsigned char *msg;
unsigned char *state;
size_t msg_len;
size_t state_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "zs",
&state_zv, &msg, &msg_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
ZVAL_DEREF(state_zv);
if (Z_TYPE_P(state_zv) != IS_STRING) {
zend_argument_error(sodium_exception_ce, 1, "must be a reference to a state");
RETURN_THROWS();
}
sodium_separate_string(state_zv);
state = (unsigned char *) Z_STRVAL(*state_zv);
state_len = Z_STRLEN(*state_zv);
if (state_len != sizeof (crypto_generichash_state)) {
zend_throw_exception(sodium_exception_ce, "incorrect state length", 0);
RETURN_THROWS();
}
memcpy(&state_tmp, state, sizeof state_tmp);
if (crypto_generichash_update((void *) &state_tmp, msg,
(unsigned long long) msg_len) != 0) {
sodium_memzero(&state_tmp, sizeof state_tmp);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
memcpy(state, &state_tmp, state_len);
sodium_memzero(&state_tmp, sizeof state_tmp);
RETURN_TRUE;
}
PHP_FUNCTION(sodium_crypto_generichash_final)
{
crypto_generichash_state state_tmp;
zend_string *hash;
zval *state_zv;
unsigned char *state;
size_t state_len;
zend_long hash_len = crypto_generichash_BYTES;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "z|l",
&state_zv, &hash_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
ZVAL_DEREF(state_zv);
if (Z_TYPE_P(state_zv) != IS_STRING) {
zend_argument_error(sodium_exception_ce, 1, "must be a reference to a state");
RETURN_THROWS();
}
sodium_separate_string(state_zv);
state = (unsigned char *) Z_STRVAL(*state_zv);
state_len = Z_STRLEN(*state_zv);
if (state_len != sizeof (crypto_generichash_state)) {
zend_throw_exception(sodium_exception_ce, "incorrect state length", 0);
RETURN_THROWS();
}
if (hash_len < crypto_generichash_BYTES_MIN ||
hash_len > crypto_generichash_BYTES_MAX) {
zend_throw_exception(sodium_exception_ce, "unsupported output length", 0);
RETURN_THROWS();
}
hash = zend_string_alloc(hash_len, 0);
memcpy(&state_tmp, state, sizeof state_tmp);
if (crypto_generichash_final((void *) &state_tmp,
(unsigned char *) ZSTR_VAL(hash),
(size_t) hash_len) != 0) {
sodium_memzero(&state_tmp, sizeof state_tmp);
zend_string_efree(hash);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
sodium_memzero(&state_tmp, sizeof state_tmp);
sodium_memzero(state, state_len);
convert_to_null(state_zv);
ZSTR_VAL(hash)[hash_len] = 0;
RETURN_NEW_STR(hash);
}
PHP_FUNCTION(sodium_crypto_box_keypair)
{
zend_string *keypair;
size_t keypair_len;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
keypair_len = crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES;
keypair = zend_string_alloc(keypair_len, 0);
if (crypto_box_keypair((unsigned char *) ZSTR_VAL(keypair) +
crypto_box_SECRETKEYBYTES,
(unsigned char *) ZSTR_VAL(keypair)) != 0) {
zend_string_efree(keypair);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(keypair)[keypair_len] = 0;
RETURN_NEW_STR(keypair);
}
PHP_FUNCTION(sodium_crypto_box_seed_keypair)
{
zend_string *keypair;
unsigned char *seed;
size_t keypair_len;
size_t seed_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s",
&seed, &seed_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (seed_len != crypto_box_SEEDBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_BOX_SEEDBYTES bytes long");
RETURN_THROWS();
}
keypair_len = crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES;
keypair = zend_string_alloc(keypair_len, 0);
if (crypto_box_seed_keypair((unsigned char *) ZSTR_VAL(keypair) +
crypto_box_SECRETKEYBYTES,
(unsigned char *) ZSTR_VAL(keypair),
seed) != 0) {
zend_string_efree(keypair);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(keypair)[keypair_len] = 0;
RETURN_NEW_STR(keypair);
}
PHP_FUNCTION(sodium_crypto_box_keypair_from_secretkey_and_publickey)
{
zend_string *keypair;
char *publickey;
char *secretkey;
size_t keypair_len;
size_t publickey_len;
size_t secretkey_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss",
&secretkey, &secretkey_len,
&publickey, &publickey_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (secretkey_len != crypto_box_SECRETKEYBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_BOX_SECRETKEYBYTES bytes long");
RETURN_THROWS();
}
if (publickey_len != crypto_box_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_BOX_PUBLICKEYBYTES bytes long");
RETURN_THROWS();
}
keypair_len = crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES;
keypair = zend_string_alloc(keypair_len, 0);
memcpy(ZSTR_VAL(keypair), secretkey, crypto_box_SECRETKEYBYTES);
memcpy(ZSTR_VAL(keypair) + crypto_box_SECRETKEYBYTES, publickey,
crypto_box_PUBLICKEYBYTES);
ZSTR_VAL(keypair)[keypair_len] = 0;
RETURN_STR(keypair);
}
PHP_FUNCTION(sodium_crypto_box_secretkey)
{
zend_string *secretkey;
unsigned char *keypair;
size_t keypair_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s",
&keypair, &keypair_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (keypair_len !=
crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_BOX_KEYPAIRBYTES bytes long");
RETURN_THROWS();
}
secretkey = zend_string_alloc(crypto_box_SECRETKEYBYTES, 0);
memcpy(ZSTR_VAL(secretkey), keypair, crypto_box_SECRETKEYBYTES);
ZSTR_VAL(secretkey)[crypto_box_SECRETKEYBYTES] = 0;
RETURN_STR(secretkey);
}
PHP_FUNCTION(sodium_crypto_box_publickey)
{
zend_string *publickey;
unsigned char *keypair;
size_t keypair_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s",
&keypair, &keypair_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (keypair_len !=
crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_BOX_KEYPAIRBYTES bytes long");
RETURN_THROWS();
}
publickey = zend_string_alloc(crypto_box_PUBLICKEYBYTES, 0);
memcpy(ZSTR_VAL(publickey), keypair + crypto_box_SECRETKEYBYTES,
crypto_box_PUBLICKEYBYTES);
ZSTR_VAL(publickey)[crypto_box_PUBLICKEYBYTES] = 0;
RETURN_STR(publickey);
}
PHP_FUNCTION(sodium_crypto_box_publickey_from_secretkey)
{
zend_string *publickey;
unsigned char *secretkey;
size_t secretkey_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s",
&secretkey, &secretkey_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (secretkey_len != crypto_box_SECRETKEYBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_BOX_SECRETKEYBYTES bytes long");
RETURN_THROWS();
}
publickey = zend_string_alloc(crypto_box_PUBLICKEYBYTES, 0);
(void) sizeof(int[crypto_scalarmult_BYTES ==
crypto_box_PUBLICKEYBYTES ? 1 : -1]);
(void) sizeof(int[crypto_scalarmult_SCALARBYTES ==
crypto_box_SECRETKEYBYTES ? 1 : -1]);
crypto_scalarmult_base((unsigned char *) ZSTR_VAL(publickey), secretkey);
ZSTR_VAL(publickey)[crypto_box_PUBLICKEYBYTES] = 0;
RETURN_STR(publickey);
}
PHP_FUNCTION(sodium_crypto_box)
{
zend_string *ciphertext;
unsigned char *keypair;
unsigned char *msg;
unsigned char *nonce;
unsigned char *publickey;
unsigned char *secretkey;
size_t keypair_len;
size_t msg_len;
size_t nonce_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sss",
&msg, &msg_len,
&nonce, &nonce_len,
&keypair, &keypair_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (nonce_len != crypto_box_NONCEBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_BOX_NONCEBYTES bytes long");
RETURN_THROWS();
}
if (keypair_len != crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 3, "must be SODIUM_CRYPTO_BOX_KEYPAIRBYTES bytes long");
RETURN_THROWS();
}
secretkey = keypair;
publickey = keypair + crypto_box_SECRETKEYBYTES;
if (SIZE_MAX - msg_len <= crypto_box_MACBYTES) {
zend_throw_exception(sodium_exception_ce, "arithmetic overflow", 0);
RETURN_THROWS();
}
ciphertext = zend_string_alloc((size_t) msg_len + crypto_box_MACBYTES, 0);
if (crypto_box_easy((unsigned char *) ZSTR_VAL(ciphertext), msg,
(unsigned long long) msg_len,
nonce, publickey, secretkey) != 0) {
zend_string_efree(ciphertext);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(ciphertext)[msg_len + crypto_box_MACBYTES] = 0;
RETURN_NEW_STR(ciphertext);
}
PHP_FUNCTION(sodium_crypto_box_open)
{
zend_string *msg;
unsigned char *ciphertext;
unsigned char *keypair;
unsigned char *nonce;
unsigned char *publickey;
unsigned char *secretkey;
size_t ciphertext_len;
size_t keypair_len;
size_t nonce_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sss",
&ciphertext, &ciphertext_len,
&nonce, &nonce_len,
&keypair, &keypair_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (nonce_len != crypto_box_NONCEBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_BOX_NONCEBYTES bytes long");
RETURN_THROWS();
}
if (keypair_len != crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 3, "must be SODIUM_CRYPTO_BOX_KEYPAIRBYTES bytes long");
RETURN_THROWS();
}
secretkey = keypair;
publickey = keypair + crypto_box_SECRETKEYBYTES;
if (ciphertext_len < crypto_box_MACBYTES) {
RETURN_FALSE;
}
msg = zend_string_alloc((size_t) ciphertext_len - crypto_box_MACBYTES, 0);
if (crypto_box_open_easy((unsigned char *) ZSTR_VAL(msg), ciphertext,
(unsigned long long) ciphertext_len,
nonce, publickey, secretkey) != 0) {
zend_string_efree(msg);
RETURN_FALSE;
} else {
ZSTR_VAL(msg)[ciphertext_len - crypto_box_MACBYTES] = 0;
RETURN_NEW_STR(msg);
}
}
PHP_FUNCTION(sodium_crypto_box_seal)
{
zend_string *ciphertext;
unsigned char *msg;
unsigned char *publickey;
size_t msg_len;
size_t publickey_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss",
&msg, &msg_len,
&publickey, &publickey_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (publickey_len != crypto_box_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_BOX_PUBLICKEYBYTES bytes long");
RETURN_THROWS();
}
if (SIZE_MAX - msg_len <= crypto_box_SEALBYTES) {
zend_throw_exception(sodium_exception_ce, "arithmetic overflow", 0);
RETURN_THROWS();
}
ciphertext = zend_string_alloc((size_t) msg_len + crypto_box_SEALBYTES, 0);
if (crypto_box_seal((unsigned char *) ZSTR_VAL(ciphertext), msg,
(unsigned long long) msg_len, publickey) != 0) {
zend_string_efree(ciphertext);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(ciphertext)[msg_len + crypto_box_SEALBYTES] = 0;
RETURN_NEW_STR(ciphertext);
}
PHP_FUNCTION(sodium_crypto_box_seal_open)
{
zend_string *msg;
unsigned char *ciphertext;
unsigned char *keypair;
unsigned char *publickey;
unsigned char *secretkey;
size_t ciphertext_len;
size_t keypair_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss",
&ciphertext, &ciphertext_len,
&keypair, &keypair_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (keypair_len != crypto_box_SECRETKEYBYTES + crypto_box_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_BOX_KEYPAIRBYTES bytes long");
RETURN_THROWS();
}
secretkey = keypair;
publickey = keypair + crypto_box_SECRETKEYBYTES;
if (ciphertext_len < crypto_box_SEALBYTES) {
RETURN_FALSE;
}
msg = zend_string_alloc((size_t) ciphertext_len - crypto_box_SEALBYTES, 0);
if (crypto_box_seal_open((unsigned char *) ZSTR_VAL(msg), ciphertext,
(unsigned long long) ciphertext_len,
publickey, secretkey) != 0) {
zend_string_efree(msg);
RETURN_FALSE;
} else {
ZSTR_VAL(msg)[ciphertext_len - crypto_box_SEALBYTES] = 0;
RETURN_NEW_STR(msg);
}
}
PHP_FUNCTION(sodium_crypto_sign_keypair)
{
zend_string *keypair;
size_t keypair_len;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
keypair_len = crypto_sign_SECRETKEYBYTES + crypto_sign_PUBLICKEYBYTES;
keypair = zend_string_alloc(keypair_len, 0);
if (crypto_sign_keypair((unsigned char *) ZSTR_VAL(keypair) +
crypto_sign_SECRETKEYBYTES,
(unsigned char *) ZSTR_VAL(keypair)) != 0) {
zend_string_efree(keypair);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(keypair)[keypair_len] = 0;
RETURN_NEW_STR(keypair);
}
PHP_FUNCTION(sodium_crypto_sign_seed_keypair)
{
zend_string *keypair;
unsigned char *seed;
size_t keypair_len;
size_t seed_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s",
&seed, &seed_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (seed_len != crypto_sign_SEEDBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_SIGN_SEEDBYTES bytes long");
RETURN_THROWS();
}
keypair_len = crypto_sign_SECRETKEYBYTES + crypto_sign_PUBLICKEYBYTES;
keypair = zend_string_alloc(keypair_len, 0);
if (crypto_sign_seed_keypair((unsigned char *) ZSTR_VAL(keypair) +
crypto_sign_SECRETKEYBYTES,
(unsigned char *) ZSTR_VAL(keypair),
seed) != 0) {
zend_string_efree(keypair);
zend_throw_exception(sodium_exception_ce, "internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(keypair)[keypair_len] = 0;
RETURN_NEW_STR(keypair);
}
PHP_FUNCTION(sodium_crypto_sign_keypair_from_secretkey_and_publickey)
{
zend_string *keypair;
char *publickey;
char *secretkey;
size_t keypair_len;
size_t publickey_len;
size_t secretkey_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss",
&secretkey, &secretkey_len,
&publickey, &publickey_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (secretkey_len != crypto_sign_SECRETKEYBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_SIGN_SECRETKEYBYTES bytes long");
RETURN_THROWS();
}
if (publickey_len != crypto_sign_PUBLICKEYBYTES) {
zend_argument_error(sodium_exception_ce, 2, "must be SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES bytes long");
RETURN_THROWS();
}
keypair_len = crypto_sign_SECRETKEYBYTES + crypto_sign_PUBLICKEYBYTES;
keypair = zend_string_alloc(keypair_len, 0);
memcpy(ZSTR_VAL(keypair), secretkey, crypto_sign_SECRETKEYBYTES);
memcpy(ZSTR_VAL(keypair) + crypto_sign_SECRETKEYBYTES, publickey,
crypto_sign_PUBLICKEYBYTES);
ZSTR_VAL(keypair)[keypair_len] = 0;
RETURN_STR(keypair);
}
PHP_FUNCTION(sodium_crypto_sign_publickey_from_secretkey)
{
zend_string *publickey;
char *secretkey;
size_t secretkey_len;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s",
&secretkey, &secretkey_len) == FAILURE) {
sodium_remove_param_values_from_backtrace(EG(exception));
RETURN_THROWS();
}
if (secretkey_len != crypto_sign_SECRETKEYBYTES) {
zend_argument_error(sodium_exception_ce, 1, "must be SODIUM_CRYPTO_SIGN_SECRETKEYBYTES bytes long");
RETURN_THROWS();
}
publickey = zend_string_alloc(crypto_sign_PUBLICKEYBYTES, 0);
if (crypto_sign_ed25519_sk_to_pk((unsigned char *) ZSTR_VAL(publickey),
(const unsigned char *) secretkey) != 0) {
zend_throw_exception(sodium_exception_ce,
"internal error", 0);
RETURN_THROWS();
}
ZSTR_VAL(publickey)[crypto_sign_PUBLICKEYBYTES] = 0;