diff options
Diffstat (limited to 'thirdparty/openssl/crypto/evp/evp_key.c')
| -rw-r--r-- | thirdparty/openssl/crypto/evp/evp_key.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/evp/evp_key.c b/thirdparty/openssl/crypto/evp/evp_key.c new file mode 100644 index 0000000000..5be9e336f9 --- /dev/null +++ b/thirdparty/openssl/crypto/evp/evp_key.c @@ -0,0 +1,195 @@ +/* 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 <stdio.h> +#include "cryptlib.h" +#include <openssl/x509.h> +#include <openssl/objects.h> +#include <openssl/evp.h> +#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 { + 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; +} + +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; +} |