diff options
author | marha <marha@users.sourceforge.net> | 2015-02-22 21:39:56 +0100 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2015-02-22 21:39:56 +0100 |
commit | 462f18c7b25fe3e467f837647d07ab0a78aa8d2b (patch) | |
tree | fc8013c0a1bac05a1945846c1697e973f4c35013 /openssl/crypto/rsa/rsa_crpt.c | |
parent | 36f711ee12b6dd5184198abed3aa551efb585587 (diff) | |
download | vcxsrv-462f18c7b25fe3e467f837647d07ab0a78aa8d2b.tar.gz vcxsrv-462f18c7b25fe3e467f837647d07ab0a78aa8d2b.tar.bz2 vcxsrv-462f18c7b25fe3e467f837647d07ab0a78aa8d2b.zip |
Merged origin/release (checked in because wanted to merge new stuff)
Diffstat (limited to 'openssl/crypto/rsa/rsa_crpt.c')
-rw-r--r-- | openssl/crypto/rsa/rsa_crpt.c | 316 |
1 files changed, 153 insertions, 163 deletions
diff --git a/openssl/crypto/rsa/rsa_crpt.c b/openssl/crypto/rsa/rsa_crpt.c index d3e44785d..5c416b53f 100644 --- a/openssl/crypto/rsa/rsa_crpt.c +++ b/openssl/crypto/rsa/rsa_crpt.c @@ -5,21 +5,21 @@ * 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: @@ -34,10 +34,10 @@ * 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 + * 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 @@ -49,7 +49,7 @@ * 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 @@ -64,194 +64,184 @@ #include <openssl/rsa.h> #include <openssl/rand.h> #ifndef OPENSSL_NO_ENGINE -#include <openssl/engine.h> +# include <openssl/engine.h> #endif int RSA_size(const RSA *r) - { - return(BN_num_bytes(r->n)); - } +{ + return (BN_num_bytes(r->n)); +} int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to, - RSA *rsa, int padding) - { + RSA *rsa, int padding) +{ #ifdef OPENSSL_FIPS - if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) - && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) - { - RSAerr(RSA_F_RSA_PUBLIC_ENCRYPT, RSA_R_NON_FIPS_RSA_METHOD); - return -1; - } + if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) + && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) { + RSAerr(RSA_F_RSA_PUBLIC_ENCRYPT, RSA_R_NON_FIPS_RSA_METHOD); + return -1; + } #endif - return(rsa->meth->rsa_pub_enc(flen, from, to, rsa, 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) - { +int RSA_private_encrypt(int flen, const unsigned char *from, + unsigned char *to, RSA *rsa, int padding) +{ #ifdef OPENSSL_FIPS - if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) - && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) - { - RSAerr(RSA_F_RSA_PRIVATE_ENCRYPT, RSA_R_NON_FIPS_RSA_METHOD); - return -1; - } + if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) + && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) { + RSAerr(RSA_F_RSA_PRIVATE_ENCRYPT, RSA_R_NON_FIPS_RSA_METHOD); + return -1; + } #endif - return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, 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) - { +int RSA_private_decrypt(int flen, const unsigned char *from, + unsigned char *to, RSA *rsa, int padding) +{ #ifdef OPENSSL_FIPS - if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) - && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) - { - RSAerr(RSA_F_RSA_PRIVATE_DECRYPT, RSA_R_NON_FIPS_RSA_METHOD); - return -1; - } + if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) + && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) { + RSAerr(RSA_F_RSA_PRIVATE_DECRYPT, RSA_R_NON_FIPS_RSA_METHOD); + return -1; + } #endif - return(rsa->meth->rsa_priv_dec(flen, from, to, rsa, 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) - { + RSA *rsa, int padding) +{ #ifdef OPENSSL_FIPS - if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) - && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) - { - RSAerr(RSA_F_RSA_PUBLIC_DECRYPT, RSA_R_NON_FIPS_RSA_METHOD); - return -1; - } + if (FIPS_mode() && !(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) + && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW)) { + RSAerr(RSA_F_RSA_PUBLIC_DECRYPT, RSA_R_NON_FIPS_RSA_METHOD); + return -1; + } #endif - return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, 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); - } +{ + 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; - } +{ + 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; +{ + int ret = 0; - if (rsa->blinding != NULL) - RSA_blinding_off(rsa); + if (rsa->blinding != NULL) + RSA_blinding_off(rsa); - rsa->blinding = RSA_setup_blinding(rsa, ctx); - if (rsa->blinding == NULL) - goto err; + 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); - } + 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) + 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; + 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; + 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; } |