diff options
author | Parménides GV <parmegv@sdf.org> | 2014-04-09 16:03:55 +0200 |
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committer | Parménides GV <parmegv@sdf.org> | 2014-04-09 16:07:34 +0200 |
commit | 1684c8f398922065a97e7da4dac4ac6a33cc5218 (patch) | |
tree | 76a4b11ae0d7b217c088f3c2b8fc7e69a7b8ae0d /app/openssl/crypto/rsa/rsa_lib.c | |
parent | b9a2b085a8f508cd09e2639c70be845c992c4a3e (diff) |
Back to the standard "app" module.
This return to "app" instead of "bitmask_android" is due to this reading: https://developer.android.com/sdk/installing/studio-build.html#projectStructure
I'll have to tweak the final apk name in build.gradle.
Diffstat (limited to 'app/openssl/crypto/rsa/rsa_lib.c')
-rw-r--r-- | app/openssl/crypto/rsa/rsa_lib.c | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/app/openssl/crypto/rsa/rsa_lib.c b/app/openssl/crypto/rsa/rsa_lib.c new file mode 100644 index 00000000..de45088d --- /dev/null +++ b/app/openssl/crypto/rsa/rsa_lib.c @@ -0,0 +1,483 @@ +/* crypto/rsa/rsa_lib.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * 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 the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <stdio.h> +#include <openssl/crypto.h> +#include "cryptlib.h" +#include <openssl/lhash.h> +#include <openssl/bn.h> +#include <openssl/rsa.h> +#include <openssl/rand.h> +#ifndef OPENSSL_NO_ENGINE +#include <openssl/engine.h> +#endif + +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; + } + +void RSA_set_default_method(const RSA_METHOD *meth) + { + default_RSA_meth = meth; + } + +const RSA_METHOD *RSA_get_default_method(void) + { + if (default_RSA_meth == NULL) + { +#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 + } + + 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; + } + + 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->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; + 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; + if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) + { +#ifndef OPENSSL_NO_ENGINE + if (ret->engine) + ENGINE_finish(ret->engine); +#endif + OPENSSL_free(ret); + return(NULL); + } + + if ((ret->meth->init != NULL) && !ret->meth->init(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; + } + return(ret); + } + +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) + { + 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 + + 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) + { + fprintf(stderr, "RSA_up_ref, bad reference count\n"); + abort(); + } +#endif + return ((i > 1) ? 1 : 0); + } + +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_size(const RSA *r) + { + return(BN_num_bytes(r->n)); + } + +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) + { + return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, 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(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(const RSA *r) + { + return((r == NULL)?0:r->meth->flags); + } + +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_NO_BLINDING; + } + +int RSA_blinding_on(RSA *rsa, BN_CTX *ctx) + { + int ret=0; + + if (rsa->blinding != NULL) + RSA_blinding_off(rsa); + + 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) + 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) + { + 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); + } + + if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME)) + { + /* Set BN_FLG_CONSTTIME flag */ + n = &local_n; + BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME); + } + else + n = rsa->n; + + ret = BN_BLINDING_create_param(NULL, e, n, ctx, + rsa->meth->bn_mod_exp, rsa->_method_mod_n); + if (ret == NULL) + { + RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_BN_LIB); + goto err; + } + CRYPTO_THREADID_current(BN_BLINDING_thread_id(ret)); +err: + BN_CTX_end(ctx); + if (in_ctx == NULL) + BN_CTX_free(ctx); + if(rsa->e == NULL) + BN_free(e); + + return ret; +} + +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_MEMORY_LOCK,ERR_R_MALLOC_FAILURE); + return(0); + } + 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); + } |