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| 1 /* crypto/evp/evp_key.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include "cryptlib.h" | |
| 61 #include <openssl/x509.h> | |
| 62 #include <openssl/objects.h> | |
| 63 #include <openssl/evp.h> | |
| 64 #include <openssl/ui.h> | |
| 65 | |
| 66 /* should be init to zeros. */ | |
| 67 static char prompt_string[80]; | |
| 68 | |
| 69 void EVP_set_pw_prompt(const char *prompt) | |
| 70 { | |
| 71 if (prompt == NULL) | |
| 72 prompt_string[0]='\0'; | |
| 73 else | |
| 74 { | |
| 75 strncpy(prompt_string,prompt,79); | |
| 76 prompt_string[79]='\0'; | |
| 77 } | |
| 78 } | |
| 79 | |
| 80 char *EVP_get_pw_prompt(void) | |
| 81 { | |
| 82 if (prompt_string[0] == '\0') | |
| 83 return(NULL); | |
| 84 else | |
| 85 return(prompt_string); | |
| 86 } | |
| 87 | |
| 88 /* For historical reasons, the standard function for reading passwords is | |
| 89 * in the DES library -- if someone ever wants to disable DES, | |
| 90 * this function will fail */ | |
| 91 int EVP_read_pw_string(char *buf, int len, const char *prompt, int verify) | |
| 92 { | |
| 93 return EVP_read_pw_string_min(buf, 0, len, prompt, verify); | |
| 94 } | |
| 95 | |
| 96 int EVP_read_pw_string_min(char *buf, int min, int len, const char *prompt, int
verify) | |
| 97 { | |
| 98 int ret; | |
| 99 char buff[BUFSIZ]; | |
| 100 UI *ui; | |
| 101 | |
| 102 if ((prompt == NULL) && (prompt_string[0] != '\0')) | |
| 103 prompt=prompt_string; | |
| 104 ui = UI_new(); | |
| 105 UI_add_input_string(ui,prompt,0,buf,min,(len>=BUFSIZ)?BUFSIZ-1:len); | |
| 106 if (verify) | |
| 107 UI_add_verify_string(ui,prompt,0, | |
| 108 buff,min,(len>=BUFSIZ)?BUFSIZ-1:len,buf); | |
| 109 ret = UI_process(ui); | |
| 110 UI_free(ui); | |
| 111 OPENSSL_cleanse(buff,BUFSIZ); | |
| 112 return ret; | |
| 113 } | |
| 114 | |
| 115 int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md, | |
| 116 const unsigned char *salt, const unsigned char *data, int datal, | |
| 117 int count, unsigned char *key, unsigned char *iv) | |
| 118 { | |
| 119 EVP_MD_CTX c; | |
| 120 unsigned char md_buf[EVP_MAX_MD_SIZE]; | |
| 121 int niv,nkey,addmd=0; | |
| 122 unsigned int mds=0,i; | |
| 123 int rv = 0; | |
| 124 nkey=type->key_len; | |
| 125 niv=type->iv_len; | |
| 126 OPENSSL_assert(nkey <= EVP_MAX_KEY_LENGTH); | |
| 127 OPENSSL_assert(niv <= EVP_MAX_IV_LENGTH); | |
| 128 | |
| 129 if (data == NULL) return(nkey); | |
| 130 | |
| 131 EVP_MD_CTX_init(&c); | |
| 132 for (;;) | |
| 133 { | |
| 134 if (!EVP_DigestInit_ex(&c,md, NULL)) | |
| 135 return 0; | |
| 136 if (addmd++) | |
| 137 if (!EVP_DigestUpdate(&c,&(md_buf[0]),mds)) | |
| 138 goto err; | |
| 139 if (!EVP_DigestUpdate(&c,data,datal)) | |
| 140 goto err; | |
| 141 if (salt != NULL) | |
| 142 if (!EVP_DigestUpdate(&c,salt,PKCS5_SALT_LEN)) | |
| 143 goto err; | |
| 144 if (!EVP_DigestFinal_ex(&c,&(md_buf[0]),&mds)) | |
| 145 goto err; | |
| 146 | |
| 147 for (i=1; i<(unsigned int)count; i++) | |
| 148 { | |
| 149 if (!EVP_DigestInit_ex(&c,md, NULL)) | |
| 150 goto err; | |
| 151 if (!EVP_DigestUpdate(&c,&(md_buf[0]),mds)) | |
| 152 goto err; | |
| 153 if (!EVP_DigestFinal_ex(&c,&(md_buf[0]),&mds)) | |
| 154 goto err; | |
| 155 } | |
| 156 i=0; | |
| 157 if (nkey) | |
| 158 { | |
| 159 for (;;) | |
| 160 { | |
| 161 if (nkey == 0) break; | |
| 162 if (i == mds) break; | |
| 163 if (key != NULL) | |
| 164 *(key++)=md_buf[i]; | |
| 165 nkey--; | |
| 166 i++; | |
| 167 } | |
| 168 } | |
| 169 if (niv && (i != mds)) | |
| 170 { | |
| 171 for (;;) | |
| 172 { | |
| 173 if (niv == 0) break; | |
| 174 if (i == mds) break; | |
| 175 if (iv != NULL) | |
| 176 *(iv++)=md_buf[i]; | |
| 177 niv--; | |
| 178 i++; | |
| 179 } | |
| 180 } | |
| 181 if ((nkey == 0) && (niv == 0)) break; | |
| 182 } | |
| 183 rv = type->key_len; | |
| 184 err: | |
| 185 EVP_MD_CTX_cleanup(&c); | |
| 186 OPENSSL_cleanse(&(md_buf[0]),EVP_MAX_MD_SIZE); | |
| 187 return rv; | |
| 188 } | |
| 189 | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master