[thirdparty/openssl.git] / crypto / passphrase.c

/*
 * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <openssl/err.h>
#include <openssl/ui.h>
#include <openssl/core_names.h>
#include "internal/cryptlib.h"
#include "internal/passphrase.h"

void ossl_pw_clear_passphrase_data(struct ossl_passphrase_data_st *data)
{
    if (data != NULL) {
        if (data->type == is_expl_passphrase)
            OPENSSL_clear_free(data->_.expl_passphrase.passphrase_copy,
                               data->_.expl_passphrase.passphrase_len);
        ossl_pw_clear_passphrase_cache(data);
        memset(data, 0, sizeof(*data));
    }
}

void ossl_pw_clear_passphrase_cache(struct ossl_passphrase_data_st *data)
{
    OPENSSL_clear_free(data->cached_passphrase, data->cached_passphrase_len);
    data->cached_passphrase = NULL;
}

int ossl_pw_set_passphrase(struct ossl_passphrase_data_st *data,
                           const unsigned char *passphrase,
                           size_t passphrase_len)
{
    if (!ossl_assert(data != NULL && passphrase != NULL)) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
        return 0;
    }
    ossl_pw_clear_passphrase_data(data);
    data->type = is_expl_passphrase;
    data->_.expl_passphrase.passphrase_copy =
        passphrase_len != 0 ? OPENSSL_memdup(passphrase, passphrase_len)
                            : OPENSSL_malloc(1);
    if (data->_.expl_passphrase.passphrase_copy == NULL)
        return 0;
    data->_.expl_passphrase.passphrase_len = passphrase_len;
    return 1;
}

int ossl_pw_set_pem_password_cb(struct ossl_passphrase_data_st *data,
                                pem_password_cb *cb, void *cbarg)
{
    if (!ossl_assert(data != NULL && cb != NULL)) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
        return 0;
    }
    ossl_pw_clear_passphrase_data(data);
    data->type = is_pem_password;
    data->_.pem_password.password_cb = cb;
    data->_.pem_password.password_cbarg = cbarg;
    return 1;
}

int ossl_pw_set_ossl_passphrase_cb(struct ossl_passphrase_data_st *data,
                                   OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg)
{
    if (!ossl_assert(data != NULL && cb != NULL)) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
        return 0;
    }
    ossl_pw_clear_passphrase_data(data);
    data->type = is_ossl_passphrase;
    data->_.ossl_passphrase.passphrase_cb = cb;
    data->_.ossl_passphrase.passphrase_cbarg = cbarg;
    return 1;
}

int ossl_pw_set_ui_method(struct ossl_passphrase_data_st *data,
                          const UI_METHOD *ui_method, void *ui_data)
{
    if (!ossl_assert(data != NULL && ui_method != NULL)) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
        return 0;
    }
    ossl_pw_clear_passphrase_data(data);
    data->type = is_ui_method;
    data->_.ui_method.ui_method = ui_method;
    data->_.ui_method.ui_method_data = ui_data;
    return 1;
}

int ossl_pw_enable_passphrase_caching(struct ossl_passphrase_data_st *data)
{
    data->flag_cache_passphrase = 1;
    return 1;
}

int ossl_pw_disable_passphrase_caching(struct ossl_passphrase_data_st *data)
{
    data->flag_cache_passphrase = 0;
    return 1;
}


/*-
 * UI_METHOD processor.  It differs from UI_UTIL_read_pw() like this:
 *
 * 1.  It constructs a prompt on its own, based on |prompt_info|.
 * 2.  It allocates a buffer for password and verification on its own
 *     to compensate for NUL terminator in UI password strings.
 * 3.  It raises errors.
 * 4.  It reports back the length of the prompted pass phrase.
 */
static int do_ui_passphrase(char *pass, size_t pass_size, size_t *pass_len,
                            const char *prompt_info, int verify,
                            const UI_METHOD *ui_method, void *ui_data)
{
    char *prompt = NULL, *ipass = NULL, *vpass = NULL;
    int prompt_idx = -1, verify_idx = -1, res;
    UI *ui = NULL;
    int ret = 0;

    if (!ossl_assert(pass != NULL && pass_size != 0 && pass_len != NULL)) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
        return 0;
    }

    if ((ui = UI_new()) == NULL) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
        return 0;
    }

    if (ui_method != NULL) {
        UI_set_method(ui, ui_method);
        if (ui_data != NULL)
            UI_add_user_data(ui, ui_data);
    }

    /* Get an application constructed prompt */
    prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
    if (prompt == NULL) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
        goto end;
    }

    /* Get a buffer for verification prompt */
    ipass = OPENSSL_zalloc(pass_size + 1);
    if (ipass == NULL)
        goto end;

    prompt_idx = UI_add_input_string(ui, prompt,
                                     UI_INPUT_FLAG_DEFAULT_PWD,
                                     ipass, 0, pass_size) - 1;
    if (prompt_idx < 0) {
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
        goto end;
    }

    if (verify) {
        /* Get a buffer for verification prompt */
        vpass = OPENSSL_zalloc(pass_size + 1);
        if (vpass == NULL)
            goto end;
        verify_idx = UI_add_verify_string(ui, prompt,
                                          UI_INPUT_FLAG_DEFAULT_PWD,
                                          vpass, 0, pass_size,
                                          ipass) - 1;
        if (verify_idx < 0) {
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
            goto end;
        }
    }

    switch (UI_process(ui)) {
    case -2:
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERRUPTED_OR_CANCELLED);
        break;
    case -1:
        ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
        break;
    default:
        res = UI_get_result_length(ui, prompt_idx);
        if (res < 0) {
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
            break;
        }
        *pass_len = (size_t)res;
        memcpy(pass, ipass, *pass_len);
        ret = 1;
        break;
    }

 end:
    OPENSSL_clear_free(vpass, pass_size + 1);
    OPENSSL_clear_free(ipass, pass_size + 1);
    OPENSSL_free(prompt);
    UI_free(ui);
    return ret;
}

/* Central pw prompting dispatcher */
int ossl_pw_get_passphrase(char *pass, size_t pass_size, size_t *pass_len,
                           const OSSL_PARAM params[], int verify,
                           struct ossl_passphrase_data_st *data)
{
    const char *source = NULL;
    size_t source_len = 0;
    const char *prompt_info = NULL;
    const UI_METHOD *ui_method = NULL;
    UI_METHOD *allocated_ui_method = NULL;
    void *ui_data = NULL;
    const OSSL_PARAM *p = NULL;
    int ret;

    /* Handle explicit and cached passphrases */

    if (data->type == is_expl_passphrase) {
        source = data->_.expl_passphrase.passphrase_copy;
        source_len = data->_.expl_passphrase.passphrase_len;
    } else if (data->flag_cache_passphrase && data->cached_passphrase != NULL) {
        source = data->cached_passphrase;
        source_len = data->cached_passphrase_len;
    }

    if (source != NULL) {
        if (source_len > pass_size)
            source_len = pass_size;
        memcpy(pass, source, source_len);
        *pass_len = source_len;
        return 1;
    }

    /* Handle the is_ossl_passphrase case...  that's pretty direct */

    if (data->type == is_ossl_passphrase) {
        OSSL_PASSPHRASE_CALLBACK *cb = data->_.ossl_passphrase.passphrase_cb;
        void *cbarg = data->_.ossl_passphrase.passphrase_cbarg;

        ret = cb(pass, pass_size, pass_len, params, cbarg);
        goto do_cache;
    }

    /* Handle the is_pem_password and is_ui_method cases */

    if ((p = OSSL_PARAM_locate_const(params,
                                     OSSL_PASSPHRASE_PARAM_INFO)) != NULL) {
        if (p->data_type != OSSL_PARAM_UTF8_STRING) {
            ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_PASSED_INVALID_ARGUMENT,
                           "Prompt info data type incorrect");
            return 0;
        }
        prompt_info = p->data;
    }

    if (data->type == is_pem_password) {
        /* We use a UI wrapper for PEM */
        pem_password_cb *cb = data->_.pem_password.password_cb;

        ui_method = allocated_ui_method =
            UI_UTIL_wrap_read_pem_callback(cb, verify);
        ui_data = data->_.pem_password.password_cbarg;

        if (ui_method == NULL) {
            ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
            return 0;
        }
    } else if (data->type == is_ui_method) {
        ui_method = data->_.ui_method.ui_method;
        ui_data = data->_.ui_method.ui_method_data;
    }

    if (ui_method == NULL) {
        ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_PASSED_INVALID_ARGUMENT,
                       "No password method specified");
        return 0;
    }

    ret = do_ui_passphrase(pass, pass_size, pass_len, prompt_info, verify,
                           ui_method, ui_data);

    UI_destroy_method(allocated_ui_method);

 do_cache:
    if (ret && data->flag_cache_passphrase) {
        if (data->cached_passphrase == NULL
            || *pass_len > data->cached_passphrase_len) {
            void *new_cache =
                OPENSSL_clear_realloc(data->cached_passphrase,
                                      data->cached_passphrase_len,
                                      *pass_len + 1);

            if (new_cache == NULL) {
                OPENSSL_cleanse(pass, *pass_len);
                return 0;
            }
            data->cached_passphrase = new_cache;
        }
        memcpy(data->cached_passphrase, pass, *pass_len);
        data->cached_passphrase[*pass_len] = '\0';
        data->cached_passphrase_len = *pass_len;
    }

    return ret;
}

static int ossl_pw_get_password(char *buf, int size, int rwflag,
                                void *userdata, const char *info)
{
    size_t password_len = 0;
    OSSL_PARAM params[] = {
        OSSL_PARAM_utf8_string(OSSL_PASSPHRASE_PARAM_INFO, NULL, 0),
        OSSL_PARAM_END
    };

    params[0].data = (void *)info;
    if (ossl_pw_get_passphrase(buf, (size_t)size, &password_len, params,
                               rwflag, userdata))
        return (int)password_len;
    return -1;
}

int ossl_pw_pem_password(char *buf, int size, int rwflag, void *userdata)
{
    return ossl_pw_get_password(buf, size, rwflag, userdata, "PEM");
}

int ossl_pw_pvk_password(char *buf, int size, int rwflag, void *userdata)
{
    return ossl_pw_get_password(buf, size, rwflag, userdata, "PVK");
}

int ossl_pw_passphrase_callback_enc(char *pass, size_t pass_size,
                                    size_t *pass_len,
                                    const OSSL_PARAM params[], void *arg)
{
    return ossl_pw_get_passphrase(pass, pass_size, pass_len, params, 1, arg);
}

int ossl_pw_passphrase_callback_dec(char *pass, size_t pass_size,
                                    size_t *pass_len,
                                    const OSSL_PARAM params[], void *arg)
{
    return ossl_pw_get_passphrase(pass, pass_size, pass_len, params, 0, arg);
}
Commit	Line	Data
a517edec	1	/*
fecb3aae	2	* Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
a517edec RL	3	*
	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
	8	*/
	9
	10	#include <openssl/err.h>
	11	#include <openssl/ui.h>
	12	#include <openssl/core_names.h>
	13	#include "internal/cryptlib.h"
	14	#include "internal/passphrase.h"
	15
	16	void ossl_pw_clear_passphrase_data(struct ossl_passphrase_data_st *data)
	17	{
	18	if (data != NULL) {
	19	if (data->type == is_expl_passphrase)
	20	OPENSSL_clear_free(data->_.expl_passphrase.passphrase_copy,
	21	data->_.expl_passphrase.passphrase_len);
	22	ossl_pw_clear_passphrase_cache(data);
	23	memset(data, 0, sizeof(*data));
	24	}
	25	}
	26
	27	void ossl_pw_clear_passphrase_cache(struct ossl_passphrase_data_st *data)
	28	{
	29	OPENSSL_clear_free(data->cached_passphrase, data->cached_passphrase_len);
	30	data->cached_passphrase = NULL;
	31	}
	32
	33	int ossl_pw_set_passphrase(struct ossl_passphrase_data_st *data,
	34	const unsigned char *passphrase,
	35	size_t passphrase_len)
	36	{
	37	if (!ossl_assert(data != NULL && passphrase != NULL)) {
	38	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
	39	return 0;
	40	}
	41	ossl_pw_clear_passphrase_data(data);
	42	data->type = is_expl_passphrase;
	43	data->_.expl_passphrase.passphrase_copy =
59ccb72c DS	44	passphrase_len != 0 ? OPENSSL_memdup(passphrase, passphrase_len)
59ccb72c DS	45	: OPENSSL_malloc(1);
e077455e	46	if (data->_.expl_passphrase.passphrase_copy == NULL)
a517edec	47	return 0;
a517edec RL	48	data->_.expl_passphrase.passphrase_len = passphrase_len;
	49	return 1;
	50	}
	51
	52	int ossl_pw_set_pem_password_cb(struct ossl_passphrase_data_st *data,
	53	pem_password_cb cb, void cbarg)
	54	{
	55	if (!ossl_assert(data != NULL && cb != NULL)) {
	56	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
	57	return 0;
	58	}
	59	ossl_pw_clear_passphrase_data(data);
	60	data->type = is_pem_password;
	61	data->_.pem_password.password_cb = cb;
	62	data->_.pem_password.password_cbarg = cbarg;
	63	return 1;
	64	}
	65
	66	int ossl_pw_set_ossl_passphrase_cb(struct ossl_passphrase_data_st *data,
	67	OSSL_PASSPHRASE_CALLBACK cb, void cbarg)
	68	{
	69	if (!ossl_assert(data != NULL && cb != NULL)) {
	70	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
	71	return 0;
	72	}
	73	ossl_pw_clear_passphrase_data(data);
	74	data->type = is_ossl_passphrase;
	75	data->_.ossl_passphrase.passphrase_cb = cb;
	76	data->_.ossl_passphrase.passphrase_cbarg = cbarg;
	77	return 1;
	78	}
	79
	80	int ossl_pw_set_ui_method(struct ossl_passphrase_data_st *data,
	81	const UI_METHOD ui_method, void ui_data)
	82	{
	83	if (!ossl_assert(data != NULL && ui_method != NULL)) {
	84	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
	85	return 0;
	86	}
	87	ossl_pw_clear_passphrase_data(data);
	88	data->type = is_ui_method;
	89	data->_.ui_method.ui_method = ui_method;
	90	data->_.ui_method.ui_method_data = ui_data;
	91	return 1;
	92	}
	93
	94	int ossl_pw_enable_passphrase_caching(struct ossl_passphrase_data_st *data)
	95	{
	96	data->flag_cache_passphrase = 1;
	97	return 1;
	98	}
	99
	100	int ossl_pw_disable_passphrase_caching(struct ossl_passphrase_data_st *data)
	101	{
	102	data->flag_cache_passphrase = 0;
	103	return 1;
	104	}
	105
	106
	107	/*-
	108	* UI_METHOD processor. It differs from UI_UTIL_read_pw() like this:
	109	*
	110	* 1. It constructs a prompt on its own, based on \|prompt_info\|.
ef65bbb9 TM	111	* 2. It allocates a buffer for password and verification on its own
ef65bbb9 TM	112	* to compensate for NUL terminator in UI password strings.
a517edec RL	113	* 3. It raises errors.
	114	* 4. It reports back the length of the prompted pass phrase.
	115	*/
	116	static int do_ui_passphrase(char pass, size_t pass_size, size_t pass_len,
	117	const char *prompt_info, int verify,
	118	const UI_METHOD ui_method, void ui_data)
	119	{
ef65bbb9 TM	120	char prompt = NULL, ipass = NULL, *vpass = NULL;
ef65bbb9 TM	121	int prompt_idx = -1, verify_idx = -1, res;
a517edec RL	122	UI *ui = NULL;
	123	int ret = 0;
	124
	125	if (!ossl_assert(pass != NULL && pass_size != 0 && pass_len != NULL)) {
	126	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
	127	return 0;
	128	}
	129
	130	if ((ui = UI_new()) == NULL) {
e077455e	131	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
a517edec RL	132	return 0;
	133	}
	134
	135	if (ui_method != NULL) {
	136	UI_set_method(ui, ui_method);
	137	if (ui_data != NULL)
	138	UI_add_user_data(ui, ui_data);
	139	}
	140
	141	/* Get an application constructed prompt */
	142	prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
	143	if (prompt == NULL) {
e077455e	144	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
a517edec RL	145	goto end;
	146	}
	147
ef65bbb9 TM	148	/* Get a buffer for verification prompt */
ef65bbb9 TM	149	ipass = OPENSSL_zalloc(pass_size + 1);
e077455e	150	if (ipass == NULL)
ef65bbb9	151	goto end;
ef65bbb9	152
a517edec RL	153	prompt_idx = UI_add_input_string(ui, prompt,
a517edec RL	154	UI_INPUT_FLAG_DEFAULT_PWD,
ef65bbb9	155	ipass, 0, pass_size) - 1;
a517edec RL	156	if (prompt_idx < 0) {
	157	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
	158	goto end;
	159	}
	160
	161	if (verify) {
	162	/* Get a buffer for verification prompt */
ef65bbb9	163	vpass = OPENSSL_zalloc(pass_size + 1);
e077455e	164	if (vpass == NULL)
a517edec	165	goto end;
a517edec RL	166	verify_idx = UI_add_verify_string(ui, prompt,
a517edec RL	167	UI_INPUT_FLAG_DEFAULT_PWD,
ef65bbb9 TM	168	vpass, 0, pass_size,
ef65bbb9 TM	169	ipass) - 1;
a517edec RL	170	if (verify_idx < 0) {
	171	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
	172	goto end;
	173	}
	174	}
	175
	176	switch (UI_process(ui)) {
	177	case -2:
	178	ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERRUPTED_OR_CANCELLED);
	179	break;
	180	case -1:
	181	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
	182	break;
	183	default:
ef65bbb9 TM	184	res = UI_get_result_length(ui, prompt_idx);
	185	if (res < 0) {
	186	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
	187	break;
	188	}
	189	*pass_len = (size_t)res;
	190	memcpy(pass, ipass, *pass_len);
a517edec RL	191	ret = 1;
	192	break;
	193	}
	194
	195	end:
ef65bbb9 TM	196	OPENSSL_clear_free(vpass, pass_size + 1);
ef65bbb9 TM	197	OPENSSL_clear_free(ipass, pass_size + 1);
a517edec RL	198	OPENSSL_free(prompt);
	199	UI_free(ui);
	200	return ret;
	201	}
	202
	203	/* Central pw prompting dispatcher */
	204	int ossl_pw_get_passphrase(char pass, size_t pass_size, size_t pass_len,
	205	const OSSL_PARAM params[], int verify,
	206	struct ossl_passphrase_data_st *data)
	207	{
	208	const char *source = NULL;
	209	size_t source_len = 0;
	210	const char *prompt_info = NULL;
	211	const UI_METHOD *ui_method = NULL;
	212	UI_METHOD *allocated_ui_method = NULL;
	213	void *ui_data = NULL;
	214	const OSSL_PARAM *p = NULL;
	215	int ret;
	216
	217	/* Handle explicit and cached passphrases */
	218
	219	if (data->type == is_expl_passphrase) {
	220	source = data->_.expl_passphrase.passphrase_copy;
	221	source_len = data->_.expl_passphrase.passphrase_len;
	222	} else if (data->flag_cache_passphrase && data->cached_passphrase != NULL) {
	223	source = data->cached_passphrase;
	224	source_len = data->cached_passphrase_len;
	225	}
	226
	227	if (source != NULL) {
	228	if (source_len > pass_size)
	229	source_len = pass_size;
	230	memcpy(pass, source, source_len);
	231	*pass_len = source_len;
	232	return 1;
	233	}
	234
	235	/* Handle the is_ossl_passphrase case... that's pretty direct */
	236
	237	if (data->type == is_ossl_passphrase) {
	238	OSSL_PASSPHRASE_CALLBACK *cb = data->_.ossl_passphrase.passphrase_cb;
	239	void *cbarg = data->_.ossl_passphrase.passphrase_cbarg;
	240
	241	ret = cb(pass, pass_size, pass_len, params, cbarg);
	242	goto do_cache;
	243	}
	244
	245	/* Handle the is_pem_password and is_ui_method cases */
	246
	247	if ((p = OSSL_PARAM_locate_const(params,
	248	OSSL_PASSPHRASE_PARAM_INFO)) != NULL) {
	249	if (p->data_type != OSSL_PARAM_UTF8_STRING) {
	250	ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_PASSED_INVALID_ARGUMENT,
	251	"Prompt info data type incorrect");
	252	return 0;
	253	}
	254	prompt_info = p->data;
	255	}
	256
	257	if (data->type == is_pem_password) {
	258	/* We use a UI wrapper for PEM */
	259	pem_password_cb *cb = data->_.pem_password.password_cb;
	260
	261	ui_method = allocated_ui_method =
262	UI_UTIL_wrap_read_pem_callback(cb, verify);
263	ui_data = data->_.pem_password.password_cbarg;
264
265	if (ui_method == NULL) {
e077455e	266	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
a517edec RL	267	return 0;
	268	}
	269	} else if (data->type == is_ui_method) {
	270	ui_method = data->_.ui_method.ui_method;
	271	ui_data = data->_.ui_method.ui_method_data;
	272	}
	273
	274	if (ui_method == NULL) {
e30b254b TM	275	ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_PASSED_INVALID_ARGUMENT,
e30b254b TM	276	"No password method specified");
a517edec RL	277	return 0;
	278	}
	279
	280	ret = do_ui_passphrase(pass, pass_size, pass_len, prompt_info, verify,
	281	ui_method, ui_data);
	282
	283	UI_destroy_method(allocated_ui_method);
	284
	285	do_cache:
	286	if (ret && data->flag_cache_passphrase) {
67b64013 RL	287	if (data->cached_passphrase == NULL
67b64013 RL	288	\|\| *pass_len > data->cached_passphrase_len) {
a517edec RL	289	void *new_cache =
	290	OPENSSL_clear_realloc(data->cached_passphrase,
	291	data->cached_passphrase_len,
	292	*pass_len + 1);
	293
	294	if (new_cache == NULL) {
	295	OPENSSL_cleanse(pass, *pass_len);
a517edec RL	296	return 0;
	297	}
	298	data->cached_passphrase = new_cache;
	299	}
	300	memcpy(data->cached_passphrase, pass, *pass_len);
	301	data->cached_passphrase[*pass_len] = '\0';
	302	data->cached_passphrase_len = *pass_len;
	303	}
	304
	305	return ret;
	306	}
	307
baa88d9d TM	308	static int ossl_pw_get_password(char *buf, int size, int rwflag,
baa88d9d TM	309	void userdata, const char info)
a517edec RL	310	{
	311	size_t password_len = 0;
	312	OSSL_PARAM params[] = {
	313	OSSL_PARAM_utf8_string(OSSL_PASSPHRASE_PARAM_INFO, NULL, 0),
	314	OSSL_PARAM_END
	315	};
	316
baa88d9d	317	params[0].data = (void *)info;
a517edec RL	318	if (ossl_pw_get_passphrase(buf, (size_t)size, &password_len, params,
	319	rwflag, userdata))
	320	return (int)password_len;
	321	return -1;
	322	}
	323
baa88d9d TM	324	int ossl_pw_pem_password(char buf, int size, int rwflag, void userdata)
	325	{
	326	return ossl_pw_get_password(buf, size, rwflag, userdata, "PEM");
	327	}
	328
	329	int ossl_pw_pvk_password(char buf, int size, int rwflag, void userdata)
	330	{
	331	return ossl_pw_get_password(buf, size, rwflag, userdata, "PVK");
	332	}
	333
a517edec RL	334	int ossl_pw_passphrase_callback_enc(char *pass, size_t pass_size,
	335	size_t *pass_len,
	336	const OSSL_PARAM params[], void *arg)
	337	{
	338	return ossl_pw_get_passphrase(pass, pass_size, pass_len, params, 1, arg);
	339	}
	340
	341	int ossl_pw_passphrase_callback_dec(char *pass, size_t pass_size,
	342	size_t *pass_len,
	343	const OSSL_PARAM params[], void *arg)
	344	{
	345	return ossl_pw_get_passphrase(pass, pass_size, pass_len, params, 0, arg);
	346	}