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Enable RSA blinding by default.

Browse Source 
http://www.openssl.org/news/secadv_20030317.txt
This commit is contained in:
Chris D. Faulhaber 2003-03-20 20:44:11 +00:00
parent 8786792504
commit 5b877a2d56
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor-crypto/openssl/dist/; revision=112442
2 changed files with 30 additions and 5 deletions
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27
crypto/openssl/crypto/rsa/rsa_eay.c
View File

@ -195,6 +195,25 @@ static int RSA_eay_public_encrypt(int flen, const unsigned char *from,
return(r);
}
static int rsa_eay_blinding(RSA *rsa, BN_CTX *ctx)
{
int ret = 1;
CRYPTO_w_lock(CRYPTO_LOCK_RSA);
/* Check again inside the lock - the macro's check is racey */
if(rsa->blinding == NULL)
ret = RSA_blinding_on(rsa, ctx);
CRYPTO_w_unlock(CRYPTO_LOCK_RSA);
return ret;
}
#define BLINDING_HELPER(rsa, ctx, err_instr) \
do { \
if(((rsa)->flags & RSA_FLAG_BLINDING) && \
((rsa)->blinding == NULL) && \
!rsa_eay_blinding(rsa, ctx)) \
err_instr \
} while(0)
/* signing */
static int RSA_eay_private_encrypt(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding)
@ -239,8 +258,8 @@ static int RSA_eay_private_encrypt(int flen, const unsigned char *from,
goto err;
}
if ((rsa->flags & RSA_FLAG_BLINDING) && (rsa->blinding == NULL))
RSA_blinding_on(rsa,ctx);
BLINDING_HELPER(rsa, ctx, goto err;);
if (rsa->flags & RSA_FLAG_BLINDING)
if (!BN_BLINDING_convert(&f,rsa->blinding,ctx)) goto err;
@ -318,8 +337,8 @@ static int RSA_eay_private_decrypt(int flen, const unsigned char *from,
goto err;
}
if ((rsa->flags & RSA_FLAG_BLINDING) && (rsa->blinding == NULL))
RSA_blinding_on(rsa,ctx);
BLINDING_HELPER(rsa, ctx, goto err;);
if (rsa->flags & RSA_FLAG_BLINDING)
if (!BN_BLINDING_convert(&f,rsa->blinding,ctx)) goto err;

8
crypto/openssl/crypto/rsa/rsa_lib.c
View File

@ -72,7 +72,13 @@ static const RSA_METHOD *default_RSA_meth=NULL;
RSA *RSA_new(void)
{
return(RSA_new_method(NULL));
RSA *r=RSA_new_method(NULL);
#ifndef OPENSSL_NO_FORCE_RSA_BLINDING
r->flags|=RSA_FLAG_BLINDING;
#endif
return r;
}
void RSA_set_default_method(const RSA_METHOD *meth)