mirror of
https://github.com/oxen-io/session-android.git
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Support for Signal calls.
Merge in RedPhone // FREEBIE
This commit is contained in:
Moxie Marlinspike
189
jni/openssl/crypto/evp/evp_key.c
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189
jni/openssl/crypto/evp/evp_key.c
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@@ -0,0 +1,189 @@
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/* crypto/evp/evp_key.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/x509.h>
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#include <openssl/objects.h>
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#include <openssl/evp.h>
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#include <openssl/ui.h>
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/* should be init to zeros. */
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static char prompt_string[80];
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void EVP_set_pw_prompt(const char *prompt)
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{
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if (prompt == NULL)
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prompt_string[0]='\0';
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else
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{
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strncpy(prompt_string,prompt,79);
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prompt_string[79]='\0';
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}
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}
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char *EVP_get_pw_prompt(void)
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{
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if (prompt_string[0] == '\0')
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return(NULL);
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else
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return(prompt_string);
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}
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/* For historical reasons, the standard function for reading passwords is
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* in the DES library -- if someone ever wants to disable DES,
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* this function will fail */
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int EVP_read_pw_string(char *buf, int len, const char *prompt, int verify)
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{
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return EVP_read_pw_string_min(buf, 0, len, prompt, verify);
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}
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int EVP_read_pw_string_min(char *buf, int min, int len, const char *prompt, int verify)
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{
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int ret;
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char buff[BUFSIZ];
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UI *ui;
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if ((prompt == NULL) && (prompt_string[0] != '\0'))
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prompt=prompt_string;
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ui = UI_new();
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UI_add_input_string(ui,prompt,0,buf,min,(len>=BUFSIZ)?BUFSIZ-1:len);
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if (verify)
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UI_add_verify_string(ui,prompt,0,
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buff,min,(len>=BUFSIZ)?BUFSIZ-1:len,buf);
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ret = UI_process(ui);
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UI_free(ui);
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OPENSSL_cleanse(buff,BUFSIZ);
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return ret;
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}
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int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
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const unsigned char *salt, const unsigned char *data, int datal,
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int count, unsigned char *key, unsigned char *iv)
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{
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EVP_MD_CTX c;
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unsigned char md_buf[EVP_MAX_MD_SIZE];
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int niv,nkey,addmd=0;
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unsigned int mds=0,i;
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int rv = 0;
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nkey=type->key_len;
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niv=type->iv_len;
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OPENSSL_assert(nkey <= EVP_MAX_KEY_LENGTH);
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OPENSSL_assert(niv <= EVP_MAX_IV_LENGTH);
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if (data == NULL) return(nkey);
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EVP_MD_CTX_init(&c);
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for (;;)
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{
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if (!EVP_DigestInit_ex(&c,md, NULL))
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return 0;
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if (addmd++)
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if (!EVP_DigestUpdate(&c,&(md_buf[0]),mds))
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goto err;
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if (!EVP_DigestUpdate(&c,data,datal))
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goto err;
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if (salt != NULL)
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if (!EVP_DigestUpdate(&c,salt,PKCS5_SALT_LEN))
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goto err;
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if (!EVP_DigestFinal_ex(&c,&(md_buf[0]),&mds))
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goto err;
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for (i=1; i<(unsigned int)count; i++)
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{
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if (!EVP_DigestInit_ex(&c,md, NULL))
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goto err;
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if (!EVP_DigestUpdate(&c,&(md_buf[0]),mds))
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goto err;
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if (!EVP_DigestFinal_ex(&c,&(md_buf[0]),&mds))
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goto err;
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}
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i=0;
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if (nkey)
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{
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for (;;)
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{
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if (nkey == 0) break;
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if (i == mds) break;
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if (key != NULL)
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*(key++)=md_buf[i];
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nkey--;
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i++;
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}
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}
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if (niv && (i != mds))
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{
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for (;;)
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{
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if (niv == 0) break;
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if (i == mds) break;
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if (iv != NULL)
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*(iv++)=md_buf[i];
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niv--;
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i++;
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}
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}
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if ((nkey == 0) && (niv == 0)) break;
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}
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rv = type->key_len;
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err:
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EVP_MD_CTX_cleanup(&c);
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OPENSSL_cleanse(&(md_buf[0]),EVP_MAX_MD_SIZE);
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return rv;
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}
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