1 files changed, 89 insertions, 75 deletions

diff --git a/src/lib/libcrypto/rsa/rsa_eay.c b/src/lib/libcrypto/rsa/rsa_eay.c
index 42a77f11cd..776324860c 100644
--- a/src/lib/libcrypto/rsa/rsa_eay.c
+++ b/src/lib/libcrypto/rsa/rsa_eay.c
@@ -68,11 +68,10 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "bn.h"
-#include "rsa.h"
-#include "rand.h"
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+#include <openssl/rand.h>
 
-#ifndef NOPROTO
 static int RSA_eay_public_encrypt(int flen, unsigned char *from,
                 unsigned char *to, RSA *rsa,int padding);
 static int RSA_eay_private_encrypt(int flen, unsigned char *from,
@@ -84,16 +83,6 @@ static int RSA_eay_private_decrypt(int flen, unsigned char *from,
 static int RSA_eay_mod_exp(BIGNUM *r0, BIGNUM *i, RSA *rsa);
 static int RSA_eay_init(RSA *rsa);
 static int RSA_eay_finish(RSA *rsa);
-#else
-static int RSA_eay_public_encrypt();
-static int RSA_eay_private_encrypt();
-static int RSA_eay_public_decrypt();
-static int RSA_eay_private_decrypt();
-static int RSA_eay_mod_exp();
-static int RSA_eay_init();
-static int RSA_eay_finish();
-#endif
-
 static RSA_METHOD rsa_pkcs1_eay_meth={
         "Eric Young's PKCS#1 RSA",
         RSA_eay_public_encrypt,
@@ -108,31 +97,75 @@ static RSA_METHOD rsa_pkcs1_eay_meth={
         NULL,
         };
 
-RSA_METHOD *RSA_PKCS1_SSLeay()
+RSA_METHOD *RSA_PKCS1_SSLeay(void)
         {
         return(&rsa_pkcs1_eay_meth);
         }
 
-static int RSA_eay_public_encrypt(flen, from, to, rsa, padding)
-int flen;
-unsigned char *from;
-unsigned char *to;
-RSA *rsa;
-int padding;
+static int RSA_eay_public_encrypt(int flen, unsigned char *from,
+             unsigned char *to, RSA *rsa, int padding)
         {
-        BIGNUM *f=NULL,*ret=NULL;
+        BIGNUM f,ret;
         int i,j,k,num=0,r= -1;
         unsigned char *buf=NULL;
         BN_CTX *ctx=NULL;
 
-        /* Body of this routine removed for OpenBSD - will return
-         * when the RSA patent expires
-         */
+        BN_init(&f);
+        BN_init(&ret);
+        if ((ctx=BN_CTX_new()) == NULL) goto err;
+        num=BN_num_bytes(rsa->n);
+        if ((buf=(unsigned char *)Malloc(num)) == NULL)
+                {
+                RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,ERR_R_MALLOC_FAILURE);
+                goto err;
+                }
+
+        switch (padding)
+                {
+        case RSA_PKCS1_PADDING:
+                i=RSA_padding_add_PKCS1_type_2(buf,num,from,flen);
+                break;
+#ifndef NO_SHA
+        case RSA_PKCS1_OAEP_PADDING:
+                i=RSA_padding_add_PKCS1_OAEP(buf,num,from,flen,NULL,0);
+                break;
+#endif
+        case RSA_SSLV23_PADDING:
+                i=RSA_padding_add_SSLv23(buf,num,from,flen);
+                break;
+        case RSA_NO_PADDING:
+                i=RSA_padding_add_none(buf,num,from,flen);
+                break;
+        default:
+                RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,RSA_R_UNKNOWN_PADDING_TYPE);
+                goto err;
+                }
+        if (i <= 0) goto err;
+
+        if (BN_bin2bn(buf,num,&f) == NULL) goto err;
+        
+        if ((rsa->_method_mod_n == NULL) && (rsa->flags & RSA_FLAG_CACHE_PUBLIC))
+                {
+                if ((rsa->_method_mod_n=BN_MONT_CTX_new()) != NULL)
+                        if (!BN_MONT_CTX_set(rsa->_method_mod_n,rsa->n,ctx))
+                            goto err;
+                }
+
+        if (!rsa->meth->bn_mod_exp(&ret,&f,rsa->e,rsa->n,ctx,
+                rsa->_method_mod_n)) goto err;
 
+        /* put in leading 0 bytes if the number is less than the
+         * length of the modulus */
+        j=BN_num_bytes(&ret);
+        i=BN_bn2bin(&ret,&(to[num-j]));
+        for (k=0; k<(num-i); k++)
+                to[k]=0;
+
+        r=num;
 err:
         if (ctx != NULL) BN_CTX_free(ctx);
-        if (f != NULL) BN_free(f);
-        if (ret != NULL) BN_free(ret);
+        BN_clear_free(&f);
+        BN_clear_free(&ret);
         if (buf != NULL) 
                 {
                 memset(buf,0,num);
@@ -141,14 +174,10 @@ err:
         return(r);
         }
 
-static int RSA_eay_private_encrypt(flen, from, to, rsa, padding)
-int flen;
-unsigned char *from;
-unsigned char *to;
-RSA *rsa;
-int padding;
+static int RSA_eay_private_encrypt(int flen, unsigned char *from,
+             unsigned char *to, RSA *rsa, int padding)
         {
-        BIGNUM *f=NULL,*ret=NULL;
+        BIGNUM f,ret;
         int i,j,k,num=0,r= -1;
         unsigned char *buf=NULL;
         BN_CTX *ctx=NULL;
@@ -159,8 +188,8 @@ int padding;
 
 err:
         if (ctx != NULL) BN_CTX_free(ctx);
-        if (ret != NULL) BN_free(ret);
-        if (f != NULL) BN_free(f);
+        BN_clear_free(&ret);
+        BN_clear_free(&f);
         if (buf != NULL)
                 {
                 memset(buf,0,num);
@@ -169,14 +198,10 @@ err:
         return(r);
         }
 
-static int RSA_eay_private_decrypt(flen, from, to, rsa,padding)
-int flen;
-unsigned char *from;
-unsigned char *to;
-RSA *rsa;
-int padding;
+static int RSA_eay_private_decrypt(int flen, unsigned char *from,
+             unsigned char *to, RSA *rsa, int padding)
         {
-        BIGNUM *f=NULL,*ret=NULL;
+        BIGNUM f,ret;
         int j,num=0,r= -1;
         unsigned char *p;
         unsigned char *buf=NULL;
@@ -188,8 +213,8 @@ int padding;
 
 err:
         if (ctx != NULL) BN_CTX_free(ctx);
-        if (f != NULL) BN_free(f);
-        if (ret != NULL) BN_free(ret);
+        BN_clear_free(&f);
+        BN_clear_free(&ret);
         if (buf != NULL)
                 {
                 memset(buf,0,num);
@@ -198,28 +223,23 @@ err:
         return(r);
         }
 
-static int RSA_eay_public_decrypt(flen, from, to, rsa, padding)
-int flen;
-unsigned char *from;
-unsigned char *to;
-RSA *rsa;
-int padding;
+static int RSA_eay_public_decrypt(int flen, unsigned char *from,
+             unsigned char *to, RSA *rsa, int padding)
         {
-        BIGNUM *f=NULL,*ret=NULL;
+        BIGNUM f,ret;
         int i,num=0,r= -1;
         unsigned char *p;
         unsigned char *buf=NULL;
         BN_CTX *ctx=NULL;
 
-
         /* Body of this routine removed for OpenBSD - will return
          * when the RSA patent expires
          */
 
 err:
         if (ctx != NULL) BN_CTX_free(ctx);
-        if (f != NULL) BN_free(f);
-        if (ret != NULL) BN_free(ret);
+        BN_clear_free(&f);
+        BN_clear_free(&ret);
         if (buf != NULL)
                 {
                 memset(buf,0,num);
@@ -228,46 +248,40 @@ err:
         return(r);
         }
 
-static int RSA_eay_mod_exp(r0, I, rsa)
-BIGNUM *r0;
-BIGNUM *I;
-RSA *rsa;
+static int RSA_eay_mod_exp(BIGNUM *r0, BIGNUM *I, RSA *rsa)
         {
-        BIGNUM *r1=NULL,*m1=NULL;
+        BIGNUM r1,m1;
         int ret=0;
         BN_CTX *ctx;
 
         if ((ctx=BN_CTX_new()) == NULL) goto err;
-        m1=BN_new();
-        r1=BN_new();
-        if ((m1 == NULL) || (r1 == NULL)) goto err;
+        BN_init(&m1);
+        BN_init(&r1);
 
         /* Body of this routine removed for OpenBSD - will return
          * when the RSA patent expires
          */
 err:
-        if (m1 != NULL) BN_free(m1);
-        if (r1 != NULL) BN_free(r1);
+        BN_clear_free(&m1);
+        BN_clear_free(&r1);
         BN_CTX_free(ctx);
         return(ret);
         }
 
-static int RSA_eay_init(rsa)
-RSA *rsa;
+static int RSA_eay_init(RSA *rsa)
         {
         rsa->flags|=RSA_FLAG_CACHE_PUBLIC|RSA_FLAG_CACHE_PRIVATE;
         return(1);
         }
 
-static int RSA_eay_finish(rsa)
-RSA *rsa;
+static int RSA_eay_finish(RSA *rsa)
         {
-        if (rsa->method_mod_n != NULL)
-                BN_MONT_CTX_free((BN_MONT_CTX *)rsa->method_mod_n);
-        if (rsa->method_mod_p != NULL)
-                BN_MONT_CTX_free((BN_MONT_CTX *)rsa->method_mod_p);
-        if (rsa->method_mod_q != NULL)
-                BN_MONT_CTX_free((BN_MONT_CTX *)rsa->method_mod_q);
+        if (rsa->_method_mod_n != NULL)
+                BN_MONT_CTX_free(rsa->_method_mod_n);
+        if (rsa->_method_mod_p != NULL)
+                BN_MONT_CTX_free(rsa->_method_mod_p);
+        if (rsa->_method_mod_q != NULL)
+                BN_MONT_CTX_free(rsa->_method_mod_q);
         return(1);
         }