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-rw-r--r--crypto/asn1/x_bignum.c111
1 files changed, 62 insertions, 49 deletions
diff --git a/crypto/asn1/x_bignum.c b/crypto/asn1/x_bignum.c
index 9cf3204a1b59..a5a403c26e10 100644
--- a/crypto/asn1/x_bignum.c
+++ b/crypto/asn1/x_bignum.c
@@ -1,6 +1,7 @@
/* x_bignum.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2000.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
@@ -10,7 +11,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
@@ -61,79 +62,91 @@
#include <openssl/asn1t.h>
#include <openssl/bn.h>
-/* Custom primitive type for BIGNUM handling. This reads in an ASN1_INTEGER as a
- * BIGNUM directly. Currently it ignores the sign which isn't a problem since all
- * BIGNUMs used are non negative and anything that looks negative is normally due
- * to an encoding error.
+/*
+ * Custom primitive type for BIGNUM handling. This reads in an ASN1_INTEGER
+ * as a BIGNUM directly. Currently it ignores the sign which isn't a problem
+ * since all BIGNUMs used are non negative and anything that looks negative
+ * is normally due to an encoding error.
*/
-#define BN_SENSITIVE 1
+#define BN_SENSITIVE 1
static int bn_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
static void bn_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
-static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
-static int bn_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
+ const ASN1_ITEM *it);
+static int bn_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+ int utype, char *free_cont, const ASN1_ITEM *it);
static ASN1_PRIMITIVE_FUNCS bignum_pf = {
- NULL, 0,
- bn_new,
- bn_free,
- 0,
- bn_c2i,
- bn_i2c
+ NULL, 0,
+ bn_new,
+ bn_free,
+ 0,
+ bn_c2i,
+ bn_i2c
};
ASN1_ITEM_start(BIGNUM)
- ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &bignum_pf, 0, "BIGNUM"
+ ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &bignum_pf, 0, "BIGNUM"
ASN1_ITEM_end(BIGNUM)
ASN1_ITEM_start(CBIGNUM)
- ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &bignum_pf, BN_SENSITIVE, "BIGNUM"
+ ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &bignum_pf, BN_SENSITIVE, "BIGNUM"
ASN1_ITEM_end(CBIGNUM)
static int bn_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- *pval = (ASN1_VALUE *)BN_new();
- if(*pval) return 1;
- else return 0;
+ *pval = (ASN1_VALUE *)BN_new();
+ if (*pval)
+ return 1;
+ else
+ return 0;
}
static void bn_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- if(!*pval) return;
- if(it->size & BN_SENSITIVE) BN_clear_free((BIGNUM *)*pval);
- else BN_free((BIGNUM *)*pval);
- *pval = NULL;
+ if (!*pval)
+ return;
+ if (it->size & BN_SENSITIVE)
+ BN_clear_free((BIGNUM *)*pval);
+ else
+ BN_free((BIGNUM *)*pval);
+ *pval = NULL;
}
-static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it)
+static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
+ const ASN1_ITEM *it)
{
- BIGNUM *bn;
- int pad;
- if(!*pval) return -1;
- bn = (BIGNUM *)*pval;
- /* If MSB set in an octet we need a padding byte */
- if(BN_num_bits(bn) & 0x7) pad = 0;
- else pad = 1;
- if(cont) {
- if(pad) *cont++ = 0;
- BN_bn2bin(bn, cont);
- }
- return pad + BN_num_bytes(bn);
+ BIGNUM *bn;
+ int pad;
+ if (!*pval)
+ return -1;
+ bn = (BIGNUM *)*pval;
+ /* If MSB set in an octet we need a padding byte */
+ if (BN_num_bits(bn) & 0x7)
+ pad = 0;
+ else
+ pad = 1;
+ if (cont) {
+ if (pad)
+ *cont++ = 0;
+ BN_bn2bin(bn, cont);
+ }
+ return pad + BN_num_bytes(bn);
}
static int bn_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
- int utype, char *free_cont, const ASN1_ITEM *it)
+ int utype, char *free_cont, const ASN1_ITEM *it)
{
- BIGNUM *bn;
- if(!*pval) bn_new(pval, it);
- bn = (BIGNUM *)*pval;
- if(!BN_bin2bn(cont, len, bn)) {
- bn_free(pval, it);
- return 0;
- }
- return 1;
+ BIGNUM *bn;
+ if (!*pval)
+ bn_new(pval, it);
+ bn = (BIGNUM *)*pval;
+ if (!BN_bin2bn(cont, len, bn)) {
+ bn_free(pval, it);
+ return 0;
+ }
+ return 1;
}
-
-