| /* crypto/evp/evp_key.c */ |
| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * 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.] |
| */ |
| |
| #include <openssl/opensslconf.h> |
| #if !defined(OPENSSL_SYS_STARBOARD) |
| #include <stdio.h> |
| #endif // !defined(OPENSSL_SYS_STARBOARD) |
| #include "cryptlib.h" |
| #include <openssl/x509.h> |
| #include <openssl/objects.h> |
| #include <openssl/evp.h> |
| |
| #if !defined(OPENSSL_NO_UI) |
| #include <openssl/ui.h> |
| |
| /* should be init to zeros. */ |
| static char prompt_string[80]; |
| |
| void EVP_set_pw_prompt(const char *prompt) |
| { |
| if (prompt == NULL) |
| prompt_string[0] = '\0'; |
| else { |
| OPENSSL_port_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); |
| } |
| |
| /* |
| * 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) |
| { |
| return EVP_read_pw_string_min(buf, 0, len, prompt, verify); |
| } |
| |
| int EVP_read_pw_string_min(char *buf, int min, 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(); |
| if (ui == NULL) |
| return -1; |
| UI_add_input_string(ui, prompt, 0, buf, min, |
| (len >= BUFSIZ) ? BUFSIZ - 1 : len); |
| if (verify) |
| UI_add_verify_string(ui, prompt, 0, |
| buff, min, (len >= BUFSIZ) ? BUFSIZ - 1 : len, |
| buf); |
| ret = UI_process(ui); |
| UI_free(ui); |
| OPENSSL_cleanse(buff, BUFSIZ); |
| return ret; |
| } |
| #endif // !defined(OPENSSL_NO_UI) |
| |
| 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 = type->key_len; |
| niv = type->iv_len; |
| OPENSSL_assert(nkey <= EVP_MAX_KEY_LENGTH); |
| OPENSSL_assert(niv <= EVP_MAX_IV_LENGTH); |
| |
| if (data == NULL) |
| return (nkey); |
| |
| EVP_MD_CTX_init(&c); |
| 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 = type->key_len; |
| err: |
| EVP_MD_CTX_cleanup(&c); |
| OPENSSL_cleanse(md_buf, sizeof(md_buf)); |
| return rv; |
| } |
