diff options
Diffstat (limited to 'openssl/crypto/asn1/x_bignum.c')
| -rw-r--r-- | openssl/crypto/asn1/x_bignum.c | 111 |
1 files changed, 62 insertions, 49 deletions
diff --git a/openssl/crypto/asn1/x_bignum.c b/openssl/crypto/asn1/x_bignum.c index 9cf3204a1..a5a403c26 100644 --- a/openssl/crypto/asn1/x_bignum.c +++ b/openssl/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; } - - |