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-rw-r--r--crypto/rsa/rsa_crpt.c316
1 files changed, 153 insertions, 163 deletions
diff --git a/crypto/rsa/rsa_crpt.c b/crypto/rsa/rsa_crpt.c
index d3e44785dcfb..5c416b53fab0 100644
--- a/crypto/rsa/rsa_crpt.c
+++ b/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;
}