diff options
Diffstat (limited to 'crypto/openssl/crypto/bn/bn_recp.c')
-rw-r--r-- | crypto/openssl/crypto/bn/bn_recp.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/crypto/openssl/crypto/bn/bn_recp.c b/crypto/openssl/crypto/bn/bn_recp.c index ef5fdd4..2e8efb8 100644 --- a/crypto/openssl/crypto/bn/bn_recp.c +++ b/crypto/openssl/crypto/bn/bn_recp.c @@ -94,7 +94,7 @@ void BN_RECP_CTX_free(BN_RECP_CTX *recp) int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *d, BN_CTX *ctx) { if (!BN_copy(&(recp->N),d)) return 0; - if (!BN_zero(&(recp->Nr))) return 0; + BN_zero(&(recp->Nr)); recp->num_bits=BN_num_bits(d); recp->shift=0; return(1); @@ -123,6 +123,7 @@ int BN_mod_mul_reciprocal(BIGNUM *r, const BIGNUM *x, const BIGNUM *y, ret = BN_div_recp(NULL,r,ca,recp,ctx); err: BN_CTX_end(ctx); + bn_check_top(r); return(ret); } @@ -147,7 +148,7 @@ int BN_div_recp(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, if (BN_ucmp(m,&(recp->N)) < 0) { - if (!BN_zero(d)) return 0; + BN_zero(d); if (!BN_copy(r,m)) return 0; BN_CTX_end(ctx); return(1); @@ -190,7 +191,7 @@ int BN_div_recp(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, { if (j++ > 2) { - BNerr(BN_F_BN_MOD_MUL_RECIPROCAL,BN_R_BAD_RECIPROCAL); + BNerr(BN_F_BN_DIV_RECP,BN_R_BAD_RECIPROCAL); goto err; } if (!BN_usub(r,r,&(recp->N))) goto err; @@ -203,6 +204,8 @@ int BN_div_recp(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, ret=1; err: BN_CTX_end(ctx); + bn_check_top(dv); + bn_check_top(rem); return(ret); } @@ -214,17 +217,18 @@ err: int BN_reciprocal(BIGNUM *r, const BIGNUM *m, int len, BN_CTX *ctx) { int ret= -1; - BIGNUM t; + BIGNUM *t; - BN_init(&t); + BN_CTX_start(ctx); + if((t = BN_CTX_get(ctx)) == NULL) goto err; - if (!BN_zero(&t)) goto err; - if (!BN_set_bit(&t,len)) goto err; + if (!BN_set_bit(t,len)) goto err; - if (!BN_div(r,NULL,&t,m,ctx)) goto err; + if (!BN_div(r,NULL,t,m,ctx)) goto err; ret=len; err: - BN_free(&t); + bn_check_top(r); + BN_CTX_end(ctx); return(ret); } |