diff options
Diffstat (limited to 'crypto/openssl/crypto/bn/bn_print.c')
| -rw-r--r-- | crypto/openssl/crypto/bn/bn_print.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/crypto/openssl/crypto/bn/bn_print.c b/crypto/openssl/crypto/bn/bn_print.c index 0d94260..055d048 100644 --- a/crypto/openssl/crypto/bn/bn_print.c +++ b/crypto/openssl/crypto/bn/bn_print.c @@ -79,7 +79,7 @@ char *BN_bn2hex(const BIGNUM *a) } p=buf; if (a->neg) *(p++)='-'; - if (a->top == 0) *(p++)='0'; + if (BN_is_zero(a)) *(p++)='0'; for (i=a->top-1; i >=0; i--) { for (j=BN_BITS2-8; j >= 0; j-=8) @@ -102,14 +102,19 @@ err: /* Must 'OPENSSL_free' the returned data */ char *BN_bn2dec(const BIGNUM *a) { - int i=0,num; + 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+3)+1; + 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)) @@ -122,14 +127,16 @@ char *BN_bn2dec(const BIGNUM *a) #define BUF_REMAIN (num+3 - (size_t)(p - buf)) p=buf; lp=bn_data; - if (t->neg) *(p++)='-'; - if (t->top == 0) + if (BN_is_zero(t)) { *(p++)='0'; *(p++)='\0'; } else { + if (BN_is_negative(t)) + *p++ = '-'; + i=0; while (!BN_is_zero(t)) { @@ -149,9 +156,16 @@ char *BN_bn2dec(const BIGNUM *a) 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); } @@ -211,10 +225,11 @@ int BN_hex2bn(BIGNUM **bn, const char *a) j-=(BN_BYTES*2); } ret->top=h; - bn_fix_top(ret); + bn_correct_top(ret); ret->neg=neg; *bn=ret; + bn_check_top(ret); return(num); err: if (*bn == NULL) BN_free(ret); @@ -270,8 +285,9 @@ int BN_dec2bn(BIGNUM **bn, const char *a) } ret->neg=neg; - bn_fix_top(ret); + bn_correct_top(ret); *bn=ret; + bn_check_top(ret); return(num); err: if (*bn == NULL) BN_free(ret); @@ -300,7 +316,7 @@ int BN_print(BIO *bp, const BIGNUM *a) int ret=0; if ((a->neg) && (BIO_write(bp,"-",1) != 1)) goto end; - if ((a->top == 0) && (BIO_write(bp,"0",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) @@ -320,14 +336,3 @@ end: return(ret); } #endif - -#ifdef BN_DEBUG -void bn_dump1(FILE *o, const char *a, const BN_ULONG *b,int n) - { - int i; - fprintf(o, "%s=", a); - for (i=n-1;i>=0;i--) - fprintf(o, "%08lX", b[i]); /* assumes 32-bit BN_ULONG */ - fprintf(o, "\n"); - } -#endif |
