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authorSimon L. B. Nielsen <simon@FreeBSD.org>2008-08-23 10:51:00 +0000
committerSimon L. B. Nielsen <simon@FreeBSD.org>2008-08-23 10:51:00 +0000
commitc4a78426bef17a0a7c81195c2b2399e7441f14ad (patch)
tree596c39f00d5968b1519e8cd7f0546412b14c20f0 /crypto/bn/bn_print.c
parenta0ddfe4e7233d81e88a86217b7653708db2720fa (diff)
downloadsrc-c4a78426bef17a0a7c81195c2b2399e7441f14ad.tar.gz
src-c4a78426bef17a0a7c81195c2b2399e7441f14ad.zip
Flatten OpenSSL vendor tree.
Notes
Notes: svn path=/vendor-crypto/openssl/dist/; revision=182044
Diffstat (limited to 'crypto/bn/bn_print.c')
-rw-r--r--crypto/bn/bn_print.c338
1 files changed, 338 insertions, 0 deletions
diff --git a/crypto/bn/bn_print.c b/crypto/bn/bn_print.c
new file mode 100644
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--- /dev/null
+++ b/crypto/bn/bn_print.c
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+/* 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);
+ }
+
+#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