-/* crypto/evp/evp_key.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the OpenSSL license (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 <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/x509.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
static char prompt_string[80];
void EVP_set_pw_prompt(const char *prompt)
- {
- if (prompt == NULL)
- prompt_string[0]='\0';
- else
- {
- strncpy(prompt_string,prompt,79);
- prompt_string[79]='\0';
- }
- }
+{
+ if (prompt == NULL)
+ prompt_string[0] = '\0';
+ else {
+ strncpy(prompt_string, prompt, 79);
+ prompt_string[79] = '\0';
+ }
+}
char *EVP_get_pw_prompt(void)
- {
- if (prompt_string[0] == '\0')
- return(NULL);
- else
- return(prompt_string);
- }
+{
+ if (prompt_string[0] == '\0')
+ return (NULL);
+ else
+ return (prompt_string);
+}
-/* For historical reasons, the standard function for reading passwords is
- * in the DES library -- if someone ever wants to disable DES,
- * this function will fail */
+/*
+ * For historical reasons, the standard function for reading passwords is in
+ * the DES library -- if someone ever wants to disable DES, this function
+ * will fail
+ */
int EVP_read_pw_string(char *buf, int len, const char *prompt, int verify)
- {
- int ret;
- char buff[BUFSIZ];
- UI *ui;
-
- if ((prompt == NULL) && (prompt_string[0] != '\0'))
- prompt=prompt_string;
- ui = UI_new();
- UI_add_input_string(ui,prompt,0,buf,0,(len>=BUFSIZ)?BUFSIZ-1:len);
- if (verify)
- UI_add_verify_string(ui,prompt,0,
- buff,0,(len>=BUFSIZ)?BUFSIZ-1:len,buf);
- ret = UI_process(ui);
- UI_free(ui);
- OPENSSL_cleanse(buff,BUFSIZ);
- return ret;
- }
+{
+ return EVP_read_pw_string_min(buf, 0, len, prompt, verify);
+}
-int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
- const unsigned char *salt, const unsigned char *data, size_t datal,
- int count, unsigned char *key, unsigned char *iv)
- {
- EVP_MD_CTX c;
- unsigned char md_buf[EVP_MAX_MD_SIZE];
- int niv,nkey,addmd=0;
- unsigned int mds=0,i;
+int EVP_read_pw_string_min(char *buf, int min, int len, const char *prompt,
+ int verify)
+{
+ int ret = -1;
+ char buff[BUFSIZ];
+ UI *ui;
- nkey=type->key_len;
- niv=type->iv_len;
- OPENSSL_assert(nkey <= EVP_MAX_KEY_LENGTH);
- OPENSSL_assert(niv <= EVP_MAX_IV_LENGTH);
+ if ((prompt == NULL) && (prompt_string[0] != '\0'))
+ prompt = prompt_string;
+ ui = UI_new();
+ if (ui == NULL)
+ return ret;
+ if (UI_add_input_string(ui, prompt, 0, buf, min,
+ (len >= BUFSIZ) ? BUFSIZ - 1 : len) < 0
+ || (verify
+ && UI_add_verify_string(ui, prompt, 0, buff, min,
+ (len >= BUFSIZ) ? BUFSIZ - 1 : len,
+ buf) < 0))
+ goto end;
+ ret = UI_process(ui);
+ OPENSSL_cleanse(buff, BUFSIZ);
+ end:
+ UI_free(ui);
+ return ret;
+}
- if (data == NULL) return(nkey);
+int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
+ const unsigned char *salt, const unsigned char *data,
+ int datal, int count, unsigned char *key,
+ unsigned char *iv)
+{
+ EVP_MD_CTX *c;
+ unsigned char md_buf[EVP_MAX_MD_SIZE];
+ int niv, nkey, addmd = 0;
+ unsigned int mds = 0, i;
+ int rv = 0;
+ nkey = EVP_CIPHER_key_length(type);
+ niv = EVP_CIPHER_iv_length(type);
+ OPENSSL_assert(nkey <= EVP_MAX_KEY_LENGTH);
+ OPENSSL_assert(niv <= EVP_MAX_IV_LENGTH);
- EVP_MD_CTX_init(&c);
- for (;;)
- {
- if (!EVP_DigestInit_ex(&c,md, NULL))
- return 0;
- if (addmd++)
- EVP_DigestUpdate(&c,&(md_buf[0]),mds);
- EVP_DigestUpdate(&c,data,datal);
- if (salt != NULL)
- EVP_DigestUpdate(&c,salt,PKCS5_SALT_LEN);
- EVP_DigestFinal_ex(&c,&(md_buf[0]),&mds);
+ if (data == NULL)
+ return (nkey);
- for (i=1; i<(unsigned int)count; i++)
- {
- EVP_DigestInit_ex(&c,md, NULL);
- EVP_DigestUpdate(&c,&(md_buf[0]),mds);
- EVP_DigestFinal_ex(&c,&(md_buf[0]),&mds);
- }
- i=0;
- if (nkey)
- {
- for (;;)
- {
- if (nkey == 0) break;
- if (i == mds) break;
- if (key != NULL)
- *(key++)=md_buf[i];
- nkey--;
- i++;
- }
- }
- if (niv && (i != mds))
- {
- for (;;)
- {
- if (niv == 0) break;
- if (i == mds) break;
- if (iv != NULL)
- *(iv++)=md_buf[i];
- niv--;
- i++;
- }
- }
- if ((nkey == 0) && (niv == 0)) break;
- }
- EVP_MD_CTX_cleanup(&c);
- OPENSSL_cleanse(&(md_buf[0]),EVP_MAX_MD_SIZE);
- return(type->key_len);
- }
+ c = EVP_MD_CTX_new();
+ if (c == NULL)
+ goto err;
+ for (;;) {
+ if (!EVP_DigestInit_ex(c, md, NULL))
+ goto err;
+ if (addmd++)
+ if (!EVP_DigestUpdate(c, &(md_buf[0]), mds))
+ goto err;
+ if (!EVP_DigestUpdate(c, data, datal))
+ goto err;
+ if (salt != NULL)
+ if (!EVP_DigestUpdate(c, salt, PKCS5_SALT_LEN))
+ goto err;
+ if (!EVP_DigestFinal_ex(c, &(md_buf[0]), &mds))
+ goto err;
+ for (i = 1; i < (unsigned int)count; i++) {
+ if (!EVP_DigestInit_ex(c, md, NULL))
+ goto err;
+ if (!EVP_DigestUpdate(c, &(md_buf[0]), mds))
+ goto err;
+ if (!EVP_DigestFinal_ex(c, &(md_buf[0]), &mds))
+ goto err;
+ }
+ i = 0;
+ if (nkey) {
+ for (;;) {
+ if (nkey == 0)
+ break;
+ if (i == mds)
+ break;
+ if (key != NULL)
+ *(key++) = md_buf[i];
+ nkey--;
+ i++;
+ }
+ }
+ if (niv && (i != mds)) {
+ for (;;) {
+ if (niv == 0)
+ break;
+ if (i == mds)
+ break;
+ if (iv != NULL)
+ *(iv++) = md_buf[i];
+ niv--;
+ i++;
+ }
+ }
+ if ((nkey == 0) && (niv == 0))
+ break;
+ }
+ rv = EVP_CIPHER_key_length(type);
+ err:
+ EVP_MD_CTX_free(c);
+ OPENSSL_cleanse(md_buf, sizeof(md_buf));
+ return rv;
+}
projects / openssl.git / blobdiff