diff options
Diffstat (limited to 'openssl/crypto/bn/bn_print.c')
-rw-r--r-- | openssl/crypto/bn/bn_print.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/openssl/crypto/bn/bn_print.c b/openssl/crypto/bn/bn_print.c deleted file mode 100644 index bebb466d..00000000 --- a/openssl/crypto/bn/bn_print.c +++ /dev/null @@ -1,359 +0,0 @@ -/* crypto/bn/bn_print.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 <ctype.h> -#include "cryptlib.h" -#include <openssl/buffer.h> -#include "bn_lcl.h" - -static const char Hex[]="0123456789ABCDEF"; - -/* Must 'OPENSSL_free' the returned data */ -char *BN_bn2hex(const BIGNUM *a) - { - int i,j,v,z=0; - char *buf; - char *p; - - buf=(char *)OPENSSL_malloc(a->top*BN_BYTES*2+2); - if (buf == NULL) - { - BNerr(BN_F_BN_BN2HEX,ERR_R_MALLOC_FAILURE); - goto err; - } - p=buf; - if (a->neg) *(p++)='-'; - if (BN_is_zero(a)) *(p++)='0'; - for (i=a->top-1; i >=0; i--) - { - for (j=BN_BITS2-8; j >= 0; j-=8) - { - /* strip leading zeros */ - v=((int)(a->d[i]>>(long)j))&0xff; - if (z || (v != 0)) - { - *(p++)=Hex[v>>4]; - *(p++)=Hex[v&0x0f]; - z=1; - } - } - } - *p='\0'; -err: - return(buf); - } - -/* Must 'OPENSSL_free' the returned data */ -char *BN_bn2dec(const BIGNUM *a) - { - int i=0,num, ok = 0; - char *buf=NULL; - char *p; - BIGNUM *t=NULL; - BN_ULONG *bn_data=NULL,*lp; - - /* get an upper bound for the length of the decimal integer - * num <= (BN_num_bits(a) + 1) * log(2) - * <= 3 * BN_num_bits(a) * 0.1001 + log(2) + 1 (rounding error) - * <= BN_num_bits(a)/10 + BN_num_bits/1000 + 1 + 1 - */ - i=BN_num_bits(a)*3; - num=(i/10+i/1000+1)+1; - bn_data=(BN_ULONG *)OPENSSL_malloc((num/BN_DEC_NUM+1)*sizeof(BN_ULONG)); - buf=(char *)OPENSSL_malloc(num+3); - if ((buf == NULL) || (bn_data == NULL)) - { - BNerr(BN_F_BN_BN2DEC,ERR_R_MALLOC_FAILURE); - goto err; - } - if ((t=BN_dup(a)) == NULL) goto err; - -#define BUF_REMAIN (num+3 - (size_t)(p - buf)) - p=buf; - lp=bn_data; - if (BN_is_zero(t)) - { - *(p++)='0'; - *(p++)='\0'; - } - else - { - if (BN_is_negative(t)) - *p++ = '-'; - - i=0; - while (!BN_is_zero(t)) - { - *lp=BN_div_word(t,BN_DEC_CONV); - lp++; - } - lp--; - /* We now have a series of blocks, BN_DEC_NUM chars - * in length, where the last one needs truncation. - * The blocks need to be reversed in order. */ - BIO_snprintf(p,BUF_REMAIN,BN_DEC_FMT1,*lp); - while (*p) p++; - while (lp != bn_data) - { - lp--; - BIO_snprintf(p,BUF_REMAIN,BN_DEC_FMT2,*lp); - while (*p) p++; - } - } - ok = 1; -err: - if (bn_data != NULL) OPENSSL_free(bn_data); - if (t != NULL) BN_free(t); - if (!ok && buf) - { - OPENSSL_free(buf); - buf = NULL; - } - - return(buf); - } - -int BN_hex2bn(BIGNUM **bn, const char *a) - { - BIGNUM *ret=NULL; - BN_ULONG l=0; - int neg=0,h,m,i,j,k,c; - int num; - - if ((a == NULL) || (*a == '\0')) return(0); - - if (*a == '-') { neg=1; a++; } - - for (i=0; isxdigit((unsigned char) a[i]); i++) - ; - - num=i+neg; - if (bn == NULL) return(num); - - /* a is the start of the hex digits, and it is 'i' long */ - if (*bn == NULL) - { - if ((ret=BN_new()) == NULL) return(0); - } - else - { - ret= *bn; - BN_zero(ret); - } - - /* i is the number of hex digests; */ - if (bn_expand(ret,i*4) == NULL) goto err; - - j=i; /* least significant 'hex' */ - m=0; - h=0; - while (j > 0) - { - m=((BN_BYTES*2) <= j)?(BN_BYTES*2):j; - l=0; - for (;;) - { - c=a[j-m]; - if ((c >= '0') && (c <= '9')) k=c-'0'; - else if ((c >= 'a') && (c <= 'f')) k=c-'a'+10; - else if ((c >= 'A') && (c <= 'F')) k=c-'A'+10; - else k=0; /* paranoia */ - l=(l<<4)|k; - - if (--m <= 0) - { - ret->d[h++]=l; - break; - } - } - j-=(BN_BYTES*2); - } - ret->top=h; - bn_correct_top(ret); - ret->neg=neg; - - *bn=ret; - bn_check_top(ret); - return(num); -err: - if (*bn == NULL) BN_free(ret); - return(0); - } - -int BN_dec2bn(BIGNUM **bn, const char *a) - { - BIGNUM *ret=NULL; - BN_ULONG l=0; - int neg=0,i,j; - int num; - - if ((a == NULL) || (*a == '\0')) return(0); - if (*a == '-') { neg=1; a++; } - - for (i=0; isdigit((unsigned char) a[i]); i++) - ; - - num=i+neg; - if (bn == NULL) return(num); - - /* a is the start of the digits, and it is 'i' long. - * We chop it into BN_DEC_NUM digits at a time */ - if (*bn == NULL) - { - if ((ret=BN_new()) == NULL) return(0); - } - else - { - ret= *bn; - BN_zero(ret); - } - - /* i is the number of digests, a bit of an over expand; */ - if (bn_expand(ret,i*4) == NULL) goto err; - - j=BN_DEC_NUM-(i%BN_DEC_NUM); - if (j == BN_DEC_NUM) j=0; - l=0; - while (*a) - { - l*=10; - l+= *a-'0'; - a++; - if (++j == BN_DEC_NUM) - { - BN_mul_word(ret,BN_DEC_CONV); - BN_add_word(ret,l); - l=0; - j=0; - } - } - ret->neg=neg; - - bn_correct_top(ret); - *bn=ret; - bn_check_top(ret); - return(num); -err: - if (*bn == NULL) BN_free(ret); - return(0); - } - -int BN_asc2bn(BIGNUM **bn, const char *a) - { - const char *p = a; - if (*p == '-') - p++; - - if (p[0] == '0' && (p[1] == 'X' || p[1] == 'x')) - { - if (!BN_hex2bn(bn, p + 2)) - return 0; - } - else - { - if (!BN_dec2bn(bn, p)) - return 0; - } - if (*a == '-') - (*bn)->neg = 1; - return 1; - } - -#ifndef OPENSSL_NO_BIO -#ifndef OPENSSL_NO_FP_API -int BN_print_fp(FILE *fp, const BIGNUM *a) - { - BIO *b; - int ret; - - if ((b=BIO_new(BIO_s_file())) == NULL) - return(0); - BIO_set_fp(b,fp,BIO_NOCLOSE); - ret=BN_print(b,a); - BIO_free(b); - return(ret); - } -#endif - -int BN_print(BIO *bp, const BIGNUM *a) - { - int i,j,v,z=0; - int ret=0; - - if ((a->neg) && (BIO_write(bp,"-",1) != 1)) goto end; - if (BN_is_zero(a) && (BIO_write(bp,"0",1) != 1)) goto end; - for (i=a->top-1; i >=0; i--) - { - for (j=BN_BITS2-4; j >= 0; j-=4) - { - /* strip leading zeros */ - v=((int)(a->d[i]>>(long)j))&0x0f; - if (z || (v != 0)) - { - if (BIO_write(bp,&(Hex[v]),1) != 1) - goto end; - z=1; - } - } - } - ret=1; -end: - return(ret); - } -#endif |