/src/openssl/crypto/passphrase.c

Source
/*
 * Copyright 2020-2025 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, (int)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, (int)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);
}

Coverage Report

Created: 2025-12-10 06:24

Line	Count	Source
1		/*
2		* Copyright 2020-2025 The OpenSSL Project Authors. All Rights Reserved.
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	0	{
18	0	if (data != NULL) {
19	0	if (data->type == is_expl_passphrase)
20	0	OPENSSL_clear_free(data->_.expl_passphrase.passphrase_copy,
21	0	data->_.expl_passphrase.passphrase_len);
22	0	ossl_pw_clear_passphrase_cache(data);
23	0	memset(data, 0, sizeof(*data));
24	0	}
25	0	}
26
27		void ossl_pw_clear_passphrase_cache(struct ossl_passphrase_data_st *data)
28	0	{
29	0	OPENSSL_clear_free(data->cached_passphrase, data->cached_passphrase_len);
30	0	data->cached_passphrase = NULL;
31	0	}
32
33		int ossl_pw_set_passphrase(struct ossl_passphrase_data_st *data,
34		const unsigned char *passphrase,
35		size_t passphrase_len)
36	0	{
37	0	if (!ossl_assert(data != NULL && passphrase != NULL)) {
38	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
39	0	return 0;
40	0	}
41	0	ossl_pw_clear_passphrase_data(data);
42	0	data->type = is_expl_passphrase;
43	0	data->_.expl_passphrase.passphrase_copy = passphrase_len != 0 ? OPENSSL_memdup(passphrase, passphrase_len)
44	0	: OPENSSL_malloc(1);
45	0	if (data->_.expl_passphrase.passphrase_copy == NULL)
46	0	return 0;
47	0	data->_.expl_passphrase.passphrase_len = passphrase_len;
48	0	return 1;
49	0	}
50
51		int ossl_pw_set_pem_password_cb(struct ossl_passphrase_data_st *data,
52		pem_password_cb cb, void cbarg)
53	0	{
54	0	if (!ossl_assert(data != NULL && cb != NULL)) {
55	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
56	0	return 0;
57	0	}
58	0	ossl_pw_clear_passphrase_data(data);
59	0	data->type = is_pem_password;
60	0	data->_.pem_password.password_cb = cb;
61	0	data->_.pem_password.password_cbarg = cbarg;
62	0	return 1;
63	0	}
64
65		int ossl_pw_set_ossl_passphrase_cb(struct ossl_passphrase_data_st *data,
66		OSSL_PASSPHRASE_CALLBACK cb, void cbarg)
67	0	{
68	0	if (!ossl_assert(data != NULL && cb != NULL)) {
69	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
70	0	return 0;
71	0	}
72	0	ossl_pw_clear_passphrase_data(data);
73	0	data->type = is_ossl_passphrase;
74	0	data->_.ossl_passphrase.passphrase_cb = cb;
75	0	data->_.ossl_passphrase.passphrase_cbarg = cbarg;
76	0	return 1;
77	0	}
78
79		int ossl_pw_set_ui_method(struct ossl_passphrase_data_st *data,
80		const UI_METHOD ui_method, void ui_data)
81	0	{
82	0	if (!ossl_assert(data != NULL && ui_method != NULL)) {
83	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
84	0	return 0;
85	0	}
86	0	ossl_pw_clear_passphrase_data(data);
87	0	data->type = is_ui_method;
88	0	data->_.ui_method.ui_method = ui_method;
89	0	data->_.ui_method.ui_method_data = ui_data;
90	0	return 1;
91	0	}
92
93		int ossl_pw_enable_passphrase_caching(struct ossl_passphrase_data_st *data)
94	0	{
95	0	data->flag_cache_passphrase = 1;
96	0	return 1;
97	0	}
98
99		int ossl_pw_disable_passphrase_caching(struct ossl_passphrase_data_st *data)
100	0	{
101	0	data->flag_cache_passphrase = 0;
102	0	return 1;
103	0	}
104
105		/*-
106		* UI_METHOD processor. It differs from UI_UTIL_read_pw() like this:
107		*
108		* 1. It constructs a prompt on its own, based on \|prompt_info\|.
109		* 2. It allocates a buffer for password and verification on its own
110		* to compensate for NUL terminator in UI password strings.
111		* 3. It raises errors.
112		* 4. It reports back the length of the prompted pass phrase.
113		*/
114		static int do_ui_passphrase(char pass, size_t pass_size, size_t pass_len,
115		const char *prompt_info, int verify,
116		const UI_METHOD ui_method, void ui_data)
117	0	{
118	0	char prompt = NULL, ipass = NULL, *vpass = NULL;
119	0	int prompt_idx = -1, verify_idx = -1, res;
120	0	UI *ui = NULL;
121	0	int ret = 0;
122
123	0	if (!ossl_assert(pass != NULL && pass_size != 0 && pass_len != NULL)) {
124	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_PASSED_NULL_PARAMETER);
125	0	return 0;
126	0	}
127
128	0	if ((ui = UI_new()) == NULL) {
129	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
130	0	return 0;
131	0	}
132
133	0	if (ui_method != NULL) {
134	0	UI_set_method(ui, ui_method);
135	0	if (ui_data != NULL)
136	0	UI_add_user_data(ui, ui_data);
137	0	}
138
139		/* Get an application constructed prompt */
140	0	prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
141	0	if (prompt == NULL) {
142	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
143	0	goto end;
144	0	}
145
146		/* Get a buffer for verification prompt */
147	0	ipass = OPENSSL_zalloc(pass_size + 1);
148	0	if (ipass == NULL)
149	0	goto end;
150
151	0	prompt_idx = UI_add_input_string(ui, prompt,
152	0	UI_INPUT_FLAG_DEFAULT_PWD,
153	0	ipass, 0, (int)pass_size)
154	0	- 1;
155	0	if (prompt_idx < 0) {
156	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
157	0	goto end;
158	0	}
159
160	0	if (verify) {
161		/* Get a buffer for verification prompt */
162	0	vpass = OPENSSL_zalloc(pass_size + 1);
163	0	if (vpass == NULL)
164	0	goto end;
165	0	verify_idx = UI_add_verify_string(ui, prompt,
166	0	UI_INPUT_FLAG_DEFAULT_PWD,
167	0	vpass, 0, (int)pass_size,
168	0	ipass)
169	0	- 1;
170	0	if (verify_idx < 0) {
171	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
172	0	goto end;
173	0	}
174	0	}
175
176	0	switch (UI_process(ui)) {
177	0	case -2:
178	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_INTERRUPTED_OR_CANCELLED);
179	0	break;
180	0	case -1:
181	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
182	0	break;
183	0	default:
184	0	res = UI_get_result_length(ui, prompt_idx);
185	0	if (res < 0) {
186	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
187	0	break;
188	0	}
189	0	*pass_len = (size_t)res;
190	0	memcpy(pass, ipass, *pass_len);
191	0	ret = 1;
192	0	break;
193	0	}
194
195	0	end:
196	0	OPENSSL_clear_free(vpass, pass_size + 1);
197	0	OPENSSL_clear_free(ipass, pass_size + 1);
198	0	OPENSSL_free(prompt);
199	0	UI_free(ui);
200	0	return ret;
201	0	}
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	0	{
208	0	const char *source = NULL;
209	0	size_t source_len = 0;
210	0	const char *prompt_info = NULL;
211	0	const UI_METHOD *ui_method = NULL;
212	0	UI_METHOD *allocated_ui_method = NULL;
213	0	void *ui_data = NULL;
214	0	const OSSL_PARAM *p = NULL;
215	0	int ret;
216
217		/* Handle explicit and cached passphrases */
218
219	0	if (data->type == is_expl_passphrase) {
220	0	source = data->_.expl_passphrase.passphrase_copy;
221	0	source_len = data->_.expl_passphrase.passphrase_len;
222	0	} else if (data->flag_cache_passphrase && data->cached_passphrase != NULL) {
223	0	source = data->cached_passphrase;
224	0	source_len = data->cached_passphrase_len;
225	0	}
226
227	0	if (source != NULL) {
228	0	if (source_len > pass_size)
229	0	source_len = pass_size;
230	0	memcpy(pass, source, source_len);
231	0	*pass_len = source_len;
232	0	return 1;
233	0	}
234
235		/* Handle the is_ossl_passphrase case... that's pretty direct */
236
237	0	if (data->type == is_ossl_passphrase) {
238	0	OSSL_PASSPHRASE_CALLBACK *cb = data->_.ossl_passphrase.passphrase_cb;
239	0	void *cbarg = data->_.ossl_passphrase.passphrase_cbarg;
240
241	0	ret = cb(pass, pass_size, pass_len, params, cbarg);
242	0	goto do_cache;
243	0	}
244
245		/* Handle the is_pem_password and is_ui_method cases */
246
247	0	if ((p = OSSL_PARAM_locate_const(params,
248	0	OSSL_PASSPHRASE_PARAM_INFO))
249	0	!= NULL) {
250	0	if (p->data_type != OSSL_PARAM_UTF8_STRING) {
251	0	ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_PASSED_INVALID_ARGUMENT,
252	0	"Prompt info data type incorrect");
253	0	return 0;
254	0	}
255	0	prompt_info = p->data;
256	0	}
257
258	0	if (data->type == is_pem_password) {
259		/* We use a UI wrapper for PEM */
260	0	pem_password_cb *cb = data->_.pem_password.password_cb;
261
262	0	ui_method = allocated_ui_method = UI_UTIL_wrap_read_pem_callback(cb, verify);
263	0	ui_data = data->_.pem_password.password_cbarg;
264
265	0	if (ui_method == NULL) {
266	0	ERR_raise(ERR_LIB_CRYPTO, ERR_R_UI_LIB);
267	0	return 0;
268	0	}
269	0	} else if (data->type == is_ui_method) {
270	0	ui_method = data->_.ui_method.ui_method;
271	0	ui_data = data->_.ui_method.ui_method_data;
272	0	}
273
274	0	if (ui_method == NULL) {
275	0	ERR_raise_data(ERR_LIB_CRYPTO, ERR_R_PASSED_INVALID_ARGUMENT,
276	0	"No password method specified");
277	0	return 0;
278	0	}
279
280	0	ret = do_ui_passphrase(pass, pass_size, pass_len, prompt_info, verify,
281	0	ui_method, ui_data);
282
283	0	UI_destroy_method(allocated_ui_method);
284
285	0	do_cache:
286	0	if (ret && data->flag_cache_passphrase) {
287	0	if (data->cached_passphrase == NULL
288	0	\|\| *pass_len > data->cached_passphrase_len) {
289	0	void *new_cache = OPENSSL_clear_realloc(data->cached_passphrase,
290	0	data->cached_passphrase_len,
291	0	*pass_len + 1);
292
293	0	if (new_cache == NULL) {
294	0	OPENSSL_cleanse(pass, *pass_len);
295	0	return 0;
296	0	}
297	0	data->cached_passphrase = new_cache;
298	0	}
299	0	memcpy(data->cached_passphrase, pass, *pass_len);
300	0	data->cached_passphrase[*pass_len] = '\0';
301	0	data->cached_passphrase_len = *pass_len;
302	0	}
303
304	0	return ret;
305	0	}
306
307		static int ossl_pw_get_password(char *buf, int size, int rwflag,
308		void userdata, const char info)
309	0	{
310	0	size_t password_len = 0;
311	0	OSSL_PARAM params[] = {
312	0	OSSL_PARAM_utf8_string(OSSL_PASSPHRASE_PARAM_INFO, NULL, 0),
313	0	OSSL_PARAM_END
314	0	};
315
316	0	params[0].data = (void *)info;
317	0	if (ossl_pw_get_passphrase(buf, (size_t)size, &password_len, params,
318	0	rwflag, userdata))
319	0	return (int)password_len;
320	0	return -1;
321	0	}
322
323		int ossl_pw_pem_password(char buf, int size, int rwflag, void userdata)
324	0	{
325	0	return ossl_pw_get_password(buf, size, rwflag, userdata, "PEM");
326	0	}
327
328		int ossl_pw_pvk_password(char buf, int size, int rwflag, void userdata)
329	0	{
330	0	return ossl_pw_get_password(buf, size, rwflag, userdata, "PVK");
331	0	}
332
333		int ossl_pw_passphrase_callback_enc(char *pass, size_t pass_size,
334		size_t *pass_len,
335		const OSSL_PARAM params[], void *arg)
336	0	{
337	0	return ossl_pw_get_passphrase(pass, pass_size, pass_len, params, 1, arg);
338	0	}
339
340		int ossl_pw_passphrase_callback_dec(char *pass, size_t pass_size,
341		size_t *pass_len,
342		const OSSL_PARAM params[], void *arg)
343	0	{
344	0	return ossl_pw_get_passphrase(pass, pass_size, pass_len, params, 0, arg);
345	0	}