BN_CTX *ctx = BN_CTX_new();inti, pri_size, pub_size, num_factors;constunsignedchar*pri_ptr;unsignedchar*pub_ptr;if(!pri || !pub || !ctx) {gotoerr; }if(!(dsa = (DSA *)X509_ALGOR_get1_DSA(master->pkey_algor))) {gotoerr; } pri_size = BN_num_bytes(dsa->q); pub_size...
int BN_mul(BIGNUM *r, BIGNUM *a, BIGNUM *b, BN_CTX *ctx);r=a*b int BN_sqr(BIGNUM *r, BIGNUM *a, BN_CTX *ctx);r=a*a,效率高于bn_mul(r,a,a) int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *a, const BIGNUM *d, BN_CTX *ctx);d=a/b,r=a%b int BN_mod(BIGNUM ...
BN_CTX *ctx = BN_CTX_new(); BN_CTX_start(ctx); BIGNUM *three = BN_CTX_get(ctx); BIGNUM *high = BN_CTX_get(ctx); BIGNUM *mid = BN_CTX_get(ctx); BIGNUM *low = BN_CTX_get(ctx); BIGNUM *tmp = BN_CTX_get(ctx); BN_set_word(three,3);// Create the constant 3BN_set_...
int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *m, BN_CTX *ctx); int BN_mod_mul_reciprocal(BIGNUM *r, BIGNUM *a, BIGNUM *b, BN_RECP_CTX *recp, BN_CTX *ctx); BN_MONT_CTX *BN_MONT_CTX_new(void); void BN_MONT_CTX_init(BN_MONT_CTX *ctx); void BN_MONT_CTX_free(...
void BN_CTX_start(BN_CTX *ctx); BIGNUM *BN_CTX_get(BN_CTX *ctx); void BN_CTX_end(BN_CTX *ctx); DESCRIPTION These functions are used to obtain temporaryBIGNUMvariables from aBN_CTX(which can been created by usingBN_CTX_new(3)) in order to save the overhead of repeatedly creating ...
对于所有函数，ctx是先前分配的BN_CTX，用于临时变量;参见BN_CTX_新增。所以你必须
BN_CTX *BN_CTX_new(void); 在一些大数操作中,需要上下文结构参与,这里创建上下文对象。 void BN_CTX_free(BN_CTX *c); 释放大数上下文对象。 直接数字操作: int BN_set_word(BIGNUM *a, BN_ULONG w); 将整数设置给大数对象,成功返回1,失败返回0。BN_ULONG在64位机器上定义为unsigned long long,长度为...
and then, when I call BN_CTX_free(ctx), It will occure "segmentation fault". but this same code will work on 1.0.2 version very well. what's wrong with me? Author lijk8090 commented Mar 28, 2020 Just like: and then, I call the BN_new instead of BN_CTX_get function It work...
BN_MONT_CTX*BN_MONT_CTX_new(void); voidBN_MONT_CTX_init(BN_MONT_CTX*ctx); voidBN_MONT_CTX_free(BN_MONT_CTX*mont); intBN_MONT_CTX_set(BN_MONT_CTX*mont,constBIGNUM*m,BN_CTX*ctx); BN_MONT_CTX*BN_MONT_CTX_copy(BN_MONT_CTX*to,BN_MONT_CTX*from); ...
BN_RECP_CTX_free(&recp); return(1); } int test_mul(BIO *bp) { BIGNUM a,b,c,d,e; int i; BN_CTX *ctx; ctx = BN_CTX_new(); if (ctx == NULL) EXIT(1); BN_init(&a); BN_init(&b); BN_init(&c); BN_init(&d); BN_init(&e); for (i=0; ...