diff options
Diffstat (limited to 'crypto/rsa/rsa_lib.c')
-rw-r--r-- | crypto/rsa/rsa_lib.c | 345 |
1 files changed, 222 insertions, 123 deletions
diff --git a/crypto/rsa/rsa_lib.c b/crypto/rsa/rsa_lib.c index 5714841..c95ceaf 100644 --- a/crypto/rsa/rsa_lib.c +++ b/crypto/rsa/rsa_lib.c @@ -67,168 +67,267 @@ #include <openssl/engine.h> #endif -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(int flen, const unsigned char *from, unsigned char *to, - RSA *rsa, int padding) - { #ifdef OPENSSL_FIPS - if(FIPS_mode() && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) - { - RSAerr(RSA_F_RSA_PRIVATE_ENCRYPT, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE); - return 0; - } +#include <openssl/fips.h> #endif - return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding)); + +const char RSA_version[]="RSA" OPENSSL_VERSION_PTEXT; + +static const RSA_METHOD *default_RSA_meth=NULL; + +RSA *RSA_new(void) + { + RSA *r=RSA_new_method(NULL); + + return r; } -int RSA_private_decrypt(int flen, const unsigned char *from, unsigned char *to, - RSA *rsa, int padding) +void RSA_set_default_method(const RSA_METHOD *meth) { - return(rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding)); + default_RSA_meth = meth; } -int RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to, - RSA *rsa, int padding) +const RSA_METHOD *RSA_get_default_method(void) { -#ifdef OPENSSL_FIPS - if(FIPS_mode() && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) + if (default_RSA_meth == NULL) { - RSAerr(RSA_F_RSA_PUBLIC_DECRYPT, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE); - return 0; - } +#ifdef OPENSSL_FIPS + if (FIPS_mode()) + return FIPS_rsa_pkcs1_ssleay(); + else + return RSA_PKCS1_SSLeay(); +#else +#ifdef RSA_NULL + default_RSA_meth=RSA_null_method(); +#else + default_RSA_meth=RSA_PKCS1_SSLeay(); +#endif #endif - return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding)); + } + + return default_RSA_meth; } -int RSA_size(const RSA *r) +const RSA_METHOD *RSA_get_method(const RSA *rsa) { - return(BN_num_bytes(r->n)); + return rsa->meth; } -void RSA_blinding_off(RSA *rsa) +int RSA_set_method(RSA *rsa, const RSA_METHOD *meth) { - if (rsa->blinding != NULL) + /* 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) { - BN_BLINDING_free(rsa->blinding); - rsa->blinding=NULL; + ENGINE_finish(rsa->engine); + rsa->engine = NULL; } - rsa->flags &= ~RSA_FLAG_BLINDING; - rsa->flags |= RSA_FLAG_NO_BLINDING; +#endif + rsa->meth = meth; + if (meth->init) meth->init(rsa); + return 1; } -int RSA_blinding_on(RSA *rsa, BN_CTX *ctx) +RSA *RSA_new_method(ENGINE *engine) { - int ret=0; - - if (rsa->blinding != NULL) - RSA_blinding_off(rsa); + RSA *ret; - 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: - return(ret); - } - -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) + ret=(RSA *)OPENSSL_malloc(sizeof(RSA)); + if (ret == NULL) + { + RSAerr(RSA_F_RSA_NEW_METHOD,ERR_R_MALLOC_FAILURE); 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 local_n; - BIGNUM *e,*n; - BN_CTX *ctx; - BN_BLINDING *ret = NULL; - - if (in_ctx == NULL) + ret->meth = RSA_get_default_method(); +#ifndef OPENSSL_NO_ENGINE + if (engine) { - if ((ctx = BN_CTX_new()) == NULL) return 0; + if (!ENGINE_init(engine)) + { + RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB); + OPENSSL_free(ret); + return NULL; + } + ret->engine = engine; } else - ctx = in_ctx; + 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 - BN_CTX_start(ctx); - e = BN_CTX_get(ctx); - if (e == NULL) + ret->pad=0; + ret->version=0; + ret->n=NULL; + ret->e=NULL; + ret->d=NULL; + ret->p=NULL; + ret->q=NULL; + ret->dmp1=NULL; + 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->blinding=NULL; + ret->mt_blinding=NULL; + ret->bignum_data=NULL; + ret->flags=ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW; + if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) { - RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE); - goto err; +#ifndef OPENSSL_NO_ENGINE + if (ret->engine) + ENGINE_finish(ret->engine); +#endif + OPENSSL_free(ret); + return(NULL); } - if (rsa->e == NULL) + if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { - 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; - } +#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 - e = rsa->e; + return(ret); + } - - if ((RAND_status() == 0) && rsa->d != NULL && rsa->d->d != NULL) +void RSA_free(RSA *r) + { + int i; + + if (r == NULL) return; + + i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_RSA); +#ifdef REF_PRINT + REF_PRINT("RSA",r); +#endif + if (i > 0) return; +#ifdef REF_CHECK + if (i < 0) { - /* 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); + fprintf(stderr,"RSA_free, bad reference count\n"); + abort(); } +#endif + + if (r->meth->finish) + r->meth->finish(r); +#ifndef OPENSSL_NO_ENGINE + if (r->engine) + ENGINE_finish(r->engine); +#endif - if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME)) + 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); + if (r->d != NULL) BN_clear_free(r->d); + if (r->p != NULL) BN_clear_free(r->p); + if (r->q != NULL) BN_clear_free(r->q); + if (r->dmp1 != NULL) BN_clear_free(r->dmp1); + 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->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) { - /* Set BN_FLG_CONSTTIME flag */ - n = &local_n; - BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME); + fprintf(stderr, "RSA_up_ref, bad reference count\n"); + abort(); } - else - n = rsa->n; +#endif + return ((i > 1) ? 1 : 0); + } - ret = BN_BLINDING_create_param(NULL, e, n, ctx, - rsa->meth->bn_mod_exp, rsa->_method_mod_n); - if (ret == NULL) +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) + { + return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp, + new_func, dup_func, free_func); + } + +int RSA_set_ex_data(RSA *r, int idx, void *arg) + { + return(CRYPTO_set_ex_data(&r->ex_data,idx,arg)); + } + +void *RSA_get_ex_data(const RSA *r, int idx) + { + return(CRYPTO_get_ex_data(&r->ex_data,idx)); + } + +int RSA_memory_lock(RSA *r) + { + int i,j,k,off; + char *p; + BIGNUM *bn,**t[6],*b; + BN_ULONG *ul; + + if (r->d == NULL) return(1); + t[0]= &r->d; + t[1]= &r->p; + t[2]= &r->q; + t[3]= &r->dmp1; + t[4]= &r->dmq1; + t[5]= &r->iqmp; + k=sizeof(BIGNUM)*6; + off=k/sizeof(BN_ULONG)+1; + j=1; + for (i=0; i<6; i++) + j+= (*t[i])->top; + if ((p=OPENSSL_malloc_locked((off+j)*sizeof(BN_ULONG))) == NULL) { - RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_BN_LIB); - goto err; + RSAerr(RSA_F_RSA_MEMORY_LOCK,ERR_R_MALLOC_FAILURE); + return(0); } - BN_BLINDING_set_thread_id(ret, CRYPTO_thread_id()); -err: - BN_CTX_end(ctx); - if (in_ctx == NULL) - BN_CTX_free(ctx); - if(rsa->e == NULL) - BN_free(e); - - return ret; -} + bn=(BIGNUM *)p; + ul=(BN_ULONG *)&(p[off]); + for (i=0; i<6; i++) + { + b= *(t[i]); + *(t[i])= &(bn[i]); + memcpy((char *)&(bn[i]),(char *)b,sizeof(BIGNUM)); + bn[i].flags=BN_FLG_STATIC_DATA; + bn[i].d=ul; + memcpy((char *)ul,b->d,sizeof(BN_ULONG)*b->top); + ul+=b->top; + BN_clear_free(b); + } + + /* I should fix this so it can still be done */ + r->flags&= ~(RSA_FLAG_CACHE_PRIVATE|RSA_FLAG_CACHE_PUBLIC); + + r->bignum_data=p; + return(1); + } |