X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Frsa%2Frsa_lib.c;h=7f1f94ee500cb15a9e5e839784278d5c902ffbdb;hp=0269b372c5ac50a0dfef79c2aa6ee009bf3b5dc2;hb=8afca8d9c60c3d7db6f9bc94a97c77f016fc139d;hpb=5f32680329648886701f5b5832239eecf0b38390 diff --git a/crypto/rsa/rsa_lib.c b/crypto/rsa/rsa_lib.c index 0269b372c5..7f1f94ee50 100644 --- a/crypto/rsa/rsa_lib.c +++ b/crypto/rsa/rsa_lib.c @@ -57,53 +57,112 @@ */ #include -#include "crypto.h" +#include #include "cryptlib.h" -#include "lhash.h" -#include "bn.h" -#include "rsa.h" +#include +#include +#include +#include +#ifndef OPENSSL_NO_ENGINE +#include +#endif -char *RSA_version="RSA part of SSLeay/OpenSSL 0.9.1c 23-Dec-1998"; +const char *RSA_version="RSA" OPENSSL_VERSION_PTEXT; -static RSA_METHOD *default_RSA_meth=NULL; -static int rsa_meth_num=0; -static STACK *rsa_meth=NULL; +static const RSA_METHOD *default_RSA_meth=NULL; -RSA *RSA_new() +RSA *RSA_new(void) { - return(RSA_new_method(NULL)); + RSA *r=RSA_new_method(NULL); + + return r; } -void RSA_set_default_method(meth) -RSA_METHOD *meth; +void RSA_set_default_method(const RSA_METHOD *meth) { - default_RSA_meth=meth; + default_RSA_meth = meth; } -RSA *RSA_new_method(meth) -RSA_METHOD *meth; +const RSA_METHOD *RSA_get_default_method(void) { - RSA *ret; - if (default_RSA_meth == NULL) { -#ifdef RSAref +#ifdef RSA_NULL + default_RSA_meth=RSA_null_method(); +#else +#if 0 /* was: #ifdef RSAref */ default_RSA_meth=RSA_PKCS1_RSAref(); #else default_RSA_meth=RSA_PKCS1_SSLeay(); +#endif #endif } - ret=(RSA *)Malloc(sizeof(RSA)); + + return default_RSA_meth; + } + +const RSA_METHOD *RSA_get_method(const RSA *rsa) + { + return rsa->meth; + } + +int RSA_set_method(RSA *rsa, const RSA_METHOD *meth) + { + /* NB: The caller is specifically setting a method, so it's not up to us + * to deal with which ENGINE it comes from. */ + const RSA_METHOD *mtmp; + mtmp = rsa->meth; + if (mtmp->finish) mtmp->finish(rsa); +#ifndef OPENSSL_NO_ENGINE + if (rsa->engine) + { + ENGINE_finish(rsa->engine); + rsa->engine = NULL; + } +#endif + rsa->meth = meth; + if (meth->init) meth->init(rsa); + return 1; + } + +RSA *RSA_new_method(ENGINE *engine) + { + RSA *ret; + + ret=(RSA *)OPENSSL_malloc(sizeof(RSA)); if (ret == NULL) { RSAerr(RSA_F_RSA_NEW_METHOD,ERR_R_MALLOC_FAILURE); - return(NULL); + return NULL; } - if (meth == NULL) - ret->meth=default_RSA_meth; + ret->meth = RSA_get_default_method(); +#ifndef OPENSSL_NO_ENGINE + if (engine) + { + if (!ENGINE_init(engine)) + { + RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB); + OPENSSL_free(ret); + return NULL; + } + ret->engine = engine; + } else - ret->meth=meth; + ret->engine = ENGINE_get_default_RSA(); + if(ret->engine) + { + ret->meth = ENGINE_get_RSA(ret->engine); + if(!ret->meth) + { + RSAerr(RSA_F_RSA_NEW_METHOD, + ERR_R_ENGINE_LIB); + ENGINE_finish(ret->engine); + OPENSSL_free(ret); + return NULL; + } + } +#endif ret->pad=0; ret->version=0; @@ -116,24 +175,28 @@ RSA_METHOD *meth; ret->dmq1=NULL; ret->iqmp=NULL; ret->references=1; - ret->method_mod_n=NULL; - ret->method_mod_p=NULL; - ret->method_mod_q=NULL; + ret->_method_mod_n=NULL; + ret->_method_mod_p=NULL; + ret->_method_mod_q=NULL; ret->blinding=NULL; + ret->mt_blinding=NULL; ret->bignum_data=NULL; ret->flags=ret->meth->flags; + CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data); if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { - Free(ret); +#ifndef OPENSSL_NO_ENGINE + if (ret->engine) + ENGINE_finish(ret->engine); +#endif + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data); + OPENSSL_free(ret); ret=NULL; } - else - CRYPTO_new_ex_data(rsa_meth,(char *)ret,&ret->ex_data); return(ret); } -void RSA_free(r) -RSA *r; +void RSA_free(RSA *r) { int i; @@ -152,10 +215,14 @@ RSA *r; } #endif - CRYPTO_free_ex_data(rsa_meth,(char *)r,&r->ex_data); - - if (r->meth->finish != NULL) + if (r->meth->finish) r->meth->finish(r); +#ifndef OPENSSL_NO_ENGINE + if (r->engine) + ENGINE_finish(r->engine); +#endif + + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data); if (r->n != NULL) BN_clear_free(r->n); if (r->e != NULL) BN_clear_free(r->e); @@ -166,137 +233,185 @@ RSA *r; if (r->dmq1 != NULL) BN_clear_free(r->dmq1); if (r->iqmp != NULL) BN_clear_free(r->iqmp); if (r->blinding != NULL) BN_BLINDING_free(r->blinding); - if (r->bignum_data != NULL) Free_locked(r->bignum_data); - Free(r); + if (r->mt_blinding != NULL) BN_BLINDING_free(r->mt_blinding); + if (r->bignum_data != NULL) OPENSSL_free_locked(r->bignum_data); + OPENSSL_free(r); + } + +int RSA_up_ref(RSA *r) + { + int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA); +#ifdef REF_PRINT + REF_PRINT("RSA",r); +#endif +#ifdef REF_CHECK + if (i < 2) + { + fprintf(stderr, "RSA_up_ref, bad reference count\n"); + abort(); + } +#endif + return ((i > 1) ? 1 : 0); } -int RSA_get_ex_new_index(argl,argp,new_func,dup_func,free_func) -long argl; -char *argp; -int (*new_func)(); -int (*dup_func)(); -void (*free_func)(); +int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, + CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) { - rsa_meth_num++; - return(CRYPTO_get_ex_new_index(rsa_meth_num-1, - &rsa_meth,argl,argp,new_func,dup_func,free_func)); + return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp, + new_func, dup_func, free_func); } -int RSA_set_ex_data(r,idx,arg) -RSA *r; -int idx; -char *arg; +int RSA_set_ex_data(RSA *r, int idx, void *arg) { return(CRYPTO_set_ex_data(&r->ex_data,idx,arg)); } -char *RSA_get_ex_data(r,idx) -RSA *r; -int idx; +void *RSA_get_ex_data(const RSA *r, int idx) { return(CRYPTO_get_ex_data(&r->ex_data,idx)); } -int RSA_size(r) -RSA *r; +int RSA_size(const RSA *r) { return(BN_num_bytes(r->n)); } -int RSA_public_encrypt(flen, from, to, rsa, padding) -int flen; -unsigned char *from; -unsigned char *to; -RSA *rsa; -int padding; +int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to, + RSA *rsa, int padding) { return(rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding)); } -int RSA_private_encrypt(flen, from, to, rsa, padding) -int flen; -unsigned char *from; -unsigned char *to; -RSA *rsa; -int padding; +int RSA_private_encrypt(int flen, const unsigned char *from, unsigned char *to, + RSA *rsa, int padding) { return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding)); } -int RSA_private_decrypt(flen, from, to, rsa, padding) -int flen; -unsigned char *from; -unsigned char *to; -RSA *rsa; -int padding; +int RSA_private_decrypt(int flen, const unsigned char *from, unsigned char *to, + RSA *rsa, int padding) { return(rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding)); } -int RSA_public_decrypt(flen, from, to, rsa, padding) -int flen; -unsigned char *from; -unsigned char *to; -RSA *rsa; -int padding; +int RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to, + RSA *rsa, int padding) { return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding)); } -int RSA_flags(r) -RSA *r; +int RSA_flags(const RSA *r) { return((r == NULL)?0:r->meth->flags); } -void RSA_blinding_off(rsa) -RSA *rsa; +void RSA_blinding_off(RSA *rsa) { if (rsa->blinding != NULL) { BN_BLINDING_free(rsa->blinding); rsa->blinding=NULL; } - rsa->flags&= ~RSA_FLAG_BLINDING; + rsa->flags &= ~RSA_FLAG_BLINDING; + rsa->flags |= RSA_FLAG_NO_BLINDING; } -int RSA_blinding_on(rsa,p_ctx) -RSA *rsa; -BN_CTX *p_ctx; +int RSA_blinding_on(RSA *rsa, BN_CTX *ctx) { - BIGNUM *A,*Ai; - BN_CTX *ctx; int ret=0; - if (p_ctx == NULL) - { - if ((ctx=BN_CTX_new()) == NULL) goto err; - } - else - ctx=p_ctx; - if (rsa->blinding != NULL) - BN_BLINDING_free(rsa->blinding); + RSA_blinding_off(rsa); - A= &(ctx->bn[0]); - ctx->tos++; - if (!BN_rand(A,BN_num_bits(rsa->n)-1,1,0)) goto err; - if ((Ai=BN_mod_inverse(NULL,A,rsa->n,ctx)) == NULL) goto err; - - if (!rsa->meth->bn_mod_exp(A,A,rsa->e,rsa->n,ctx, - (char *)rsa->method_mod_n)) goto err; - rsa->blinding=BN_BLINDING_new(A,Ai,rsa->n); - ctx->tos--; - rsa->flags|=RSA_FLAG_BLINDING; - BN_free(Ai); + rsa->blinding = RSA_setup_blinding(rsa, ctx); + if (rsa->blinding == NULL) + goto err; + + rsa->flags |= RSA_FLAG_BLINDING; + rsa->flags &= ~RSA_FLAG_NO_BLINDING; ret=1; err: - if (ctx != p_ctx) BN_CTX_free(ctx); return(ret); } -int RSA_memory_lock(r) -RSA *r; +static BIGNUM *rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p, + const BIGNUM *q, BN_CTX *ctx) +{ + BIGNUM *ret = NULL, *r0, *r1, *r2; + + if (d == NULL || p == NULL || q == NULL) + return NULL; + + BN_CTX_start(ctx); + r0 = BN_CTX_get(ctx); + r1 = BN_CTX_get(ctx); + r2 = BN_CTX_get(ctx); + if (r2 == NULL) + goto err; + + if (!BN_sub(r1, p, BN_value_one())) goto err; + if (!BN_sub(r2, q, BN_value_one())) goto err; + if (!BN_mul(r0, r1, r2, ctx)) goto err; + + ret = BN_mod_inverse(NULL, d, r0, ctx); +err: + BN_CTX_end(ctx); + return ret; +} + +BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *in_ctx) +{ + BIGNUM *e; + BN_CTX *ctx; + BN_BLINDING *ret = NULL; + + if (in_ctx == NULL) + { + if ((ctx = BN_CTX_new()) == NULL) return 0; + } + else + ctx = in_ctx; + + BN_CTX_start(ctx); + e = BN_CTX_get(ctx); + if (e == NULL) + { + RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE); + goto err; + } + + if (rsa->e == NULL) + { + e = rsa_get_public_exp(rsa->d, rsa->p, rsa->q, ctx); + if (e == NULL) + { + RSAerr(RSA_F_RSA_SETUP_BLINDING, RSA_R_NO_PUBLIC_EXPONENT); + goto err; + } + } + else + e = rsa->e; + + + if ((RAND_status() == 0) && rsa->d != NULL && rsa->d->d != NULL) + { + /* if PRNG is not properly seeded, resort to secret + * exponent as unpredictable seed */ + RAND_add(rsa->d->d, rsa->d->dmax * sizeof rsa->d->d[0], 0.0); + } + + ret = BN_BLINDING_create_param(NULL, e, rsa->n, ctx, + rsa->meth->bn_mod_exp, rsa->_method_mod_n); + BN_BLINDING_set_thread_id(ret, CRYPTO_thread_id()); +err: + BN_CTX_end(ctx); + if (in_ctx == NULL) + BN_CTX_free(ctx); + + return ret; +} + +int RSA_memory_lock(RSA *r) { int i,j,k,off; char *p; @@ -315,9 +430,9 @@ RSA *r; j=1; for (i=0; i<6; i++) j+= (*t[i])->top; - if ((p=Malloc_locked((off+j)*sizeof(BN_ULONG))) == NULL) + if ((p=OPENSSL_malloc_locked((off+j)*sizeof(BN_ULONG))) == NULL) { - RSAerr(RSA_F_MEMORY_LOCK,ERR_R_MALLOC_FAILURE); + RSAerr(RSA_F_RSA_MEMORY_LOCK,ERR_R_MALLOC_FAILURE); return(0); } bn=(BIGNUM *)p; @@ -340,4 +455,3 @@ RSA *r; r->bignum_data=p; return(1); } -