mirror of
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636b087e3e
Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/9130)
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/*
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* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <openssl/bio.h>
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#include "bn_lcl.h"
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static const char Hex[] = "0123456789ABCDEF";
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#ifndef OPENSSL_NO_STDIO
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int BN_print_fp(FILE *fp, const BIGNUM *a)
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{
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BIO *b;
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int ret;
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if ((b = BIO_new(BIO_s_file())) == NULL)
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return 0;
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BIO_set_fp(b, fp, BIO_NOCLOSE);
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ret = BN_print(b, a);
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BIO_free(b);
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return ret;
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}
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#endif
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int BN_print(BIO *bp, const BIGNUM *a)
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{
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int i, j, v, z = 0;
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int ret = 0;
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if ((a->neg) && BIO_write(bp, "-", 1) != 1)
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goto end;
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if (BN_is_zero(a) && BIO_write(bp, "0", 1) != 1)
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goto end;
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for (i = a->top - 1; i >= 0; i--) {
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for (j = BN_BITS2 - 4; j >= 0; j -= 4) {
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/* strip leading zeros */
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v = (int)((a->d[i] >> j) & 0x0f);
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if (z || v != 0) {
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if (BIO_write(bp, &Hex[v], 1) != 1)
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goto end;
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z = 1;
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}
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}
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}
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ret = 1;
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end:
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return ret;
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}
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char *BN_options(void)
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{
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static int init = 0;
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static char data[16];
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if (!init) {
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init++;
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#ifdef BN_LLONG
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BIO_snprintf(data, sizeof(data), "bn(%zu,%zu)",
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sizeof(BN_ULLONG) * 8, sizeof(BN_ULONG) * 8);
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#else
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BIO_snprintf(data, sizeof(data), "bn(%zu,%zu)",
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sizeof(BN_ULONG) * 8, sizeof(BN_ULONG) * 8);
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#endif
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}
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return data;
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}
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