initial/final commitHEADmaster

1 files changed, 343 insertions, 0 deletions

diff --git a/openssl-1.1.0h/crypto/bn/bn_print.c b/openssl-1.1.0h/crypto/bn/bn_print.c
new file mode 100644
index 0000000..5ffe2fc
--- /dev/null
+++ b/openssl-1.1.0h/crypto/bn/bn_print.c
@@ -0,0 +1,343 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include <limits.h>
+#include "internal/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;
+
+    if (BN_is_zero(a))
+        return OPENSSL_strdup("0");
+    buf = 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++) = '-';
+    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;
+    int bn_data_num;
+
+    /*-
+     * get an upper bound for the length of the decimal integer
+     * num <= (BN_num_bits(a) + 1) * log(2)
+     *     <= 3 * BN_num_bits(a) * 0.101 + log(2) + 1     (rounding error)
+     *     <= 3 * BN_num_bits(a) / 10 + 3 * BN_num_bits / 1000 + 1 + 1
+     */
+    i = BN_num_bits(a) * 3;
+    num = (i / 10 + i / 1000 + 1) + 1;
+    bn_data_num = num / BN_DEC_NUM + 1;
+    bn_data = OPENSSL_malloc(bn_data_num * sizeof(BN_ULONG));
+    buf = 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++ = '-';
+
+        while (!BN_is_zero(t)) {
+            if (lp - bn_data >= bn_data_num)
+                goto err;
+            *lp = BN_div_word(t, BN_DEC_CONV);
+            if (*lp == (BN_ULONG)-1)
+                goto err;
+            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:
+    OPENSSL_free(bn_data);
+    BN_free(t);
+    if (ok)
+        return buf;
+    OPENSSL_free(buf);
+    return NULL;
+}
+
+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; i <= (INT_MAX/4) && isxdigit((unsigned char)a[i]); i++)
+        continue;
+
+    if (i == 0 || i > INT_MAX/4)
+        goto err;
+
+    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 digits */
+    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];
+            k = OPENSSL_hexchar2int(c);
+            if (k < 0)
+                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);
+
+    *bn = ret;
+    bn_check_top(ret);
+    /* Don't set the negative flag if it's zero. */
+    if (ret->top != 0)
+        ret->neg = neg;
+    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; i <= (INT_MAX/4) && isdigit((unsigned char)a[i]); i++)
+        continue;
+
+    if (i == 0 || i > INT_MAX/4)
+        goto err;
+
+    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 digits, 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 (--i >= 0) {
+        l *= 10;
+        l += *a - '0';
+        a++;
+        if (++j == BN_DEC_NUM) {
+            if (!BN_mul_word(ret, BN_DEC_CONV)
+                || !BN_add_word(ret, l))
+                goto err;
+            l = 0;
+            j = 0;
+        }
+    }
+
+    bn_correct_top(ret);
+    *bn = ret;
+    bn_check_top(ret);
+    /* Don't set the negative flag if it's zero. */
+    if (ret->top != 0)
+        ret->neg = neg;
+    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;
+    }
+    /* Don't set the negative flag if it's zero. */
+    if (*a == '-' && (*bn)->top != 0)
+        (*bn)->neg = 1;
+    return 1;
+}
+
+# ifndef OPENSSL_NO_STDIO
+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);
+}
+
+char *BN_options(void)
+{
+    static int init = 0;
+    static char data[16];
+
+    if (!init) {
+        init++;
+#ifdef BN_LLONG
+        BIO_snprintf(data, sizeof(data), "bn(%d,%d)",
+                     (int)sizeof(BN_ULLONG) * 8, (int)sizeof(BN_ULONG) * 8);
+#else
+        BIO_snprintf(data, sizeof(data), "bn(%d,%d)",
+                     (int)sizeof(BN_ULONG) * 8, (int)sizeof(BN_ULONG) * 8);
+#endif
+    }
+    return (data);
+}