Put the first stage of my bignum debugging adventures into CVS. This code
[openssl.git] / crypto / bn / bntest.c
index 43a620e3a5fb3a7f4894c088640fdc0755bdf583..0d37dcff4d89b79ae9e00fa11f008faac7d442e0 100644 (file)
  * copied and put under another distribution licence
  * [including the GNU Public Licence.]
  */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * Portions of the attached software ("Contribution") are developed by 
+ * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
+ *
+ * The Contribution is licensed pursuant to the Eric Young open source
+ * license provided above.
+ *
+ * The binary polynomial arithmetic software is originally written by 
+ * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
+ *
+ */
+
+/* Until the key-gen callbacks are modified to use newer prototypes, we allow
+ * deprecated functions for openssl-internal code */
+#ifdef OPENSSL_NO_DEPRECATED
+#undef OPENSSL_NO_DEPRECATED
+#endif
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <openssl/x509.h>
 #include <openssl/err.h>
 
-#ifdef OPENSSL_SYS_WINDOWS
-#include "../bio/bss_file.c"
-#endif
-
 const int num0 = 100; /* number of tests */
 const int num1 = 50;  /* additional tests for some functions */
 const int num2 = 5;   /* number of tests for slow functions */
@@ -91,16 +106,20 @@ int test_mod(BIO *bp,BN_CTX *ctx);
 int test_mod_mul(BIO *bp,BN_CTX *ctx);
 int test_mod_exp(BIO *bp,BN_CTX *ctx);
 int test_exp(BIO *bp,BN_CTX *ctx);
+int test_gf2m_add(BIO *bp);
+int test_gf2m_mod(BIO *bp);
+int test_gf2m_mod_mul(BIO *bp,BN_CTX *ctx);
+int test_gf2m_mod_sqr(BIO *bp,BN_CTX *ctx);
+int test_gf2m_mod_inv(BIO *bp,BN_CTX *ctx);
+int test_gf2m_mod_div(BIO *bp,BN_CTX *ctx);
+int test_gf2m_mod_exp(BIO *bp,BN_CTX *ctx);
+int test_gf2m_mod_sqrt(BIO *bp,BN_CTX *ctx);
+int test_gf2m_mod_solve_quad(BIO *bp,BN_CTX *ctx);
 int test_kron(BIO *bp,BN_CTX *ctx);
 int test_sqrt(BIO *bp,BN_CTX *ctx);
 int rand_neg(void);
 static int results=0;
 
-#ifdef OPENSSL_NO_STDIO
-#define APPS_WIN16
-#include "bss_file.c"
-#endif
-
 static unsigned char lst[]="\xC6\x4F\x43\x04\x2A\xEA\xCA\x6E\x58\x36\x80\x5B\xE8\xC9"
 "\x9B\x04\x5D\x48\x36\xC2\xFD\x16\xC9\x64\xF0";
 
@@ -141,10 +160,10 @@ int main(int argc, char *argv[])
 
 
        ctx=BN_CTX_new();
-       if (ctx == NULL) exit(1);
+       if (ctx == NULL) EXIT(1);
 
        out=BIO_new(BIO_s_file());
-       if (out == NULL) exit(1);
+       if (out == NULL) EXIT(1);
        if (outfile == NULL)
                {
                BIO_set_fp(out,stdout,BIO_NOCLOSE);
@@ -154,7 +173,7 @@ int main(int argc, char *argv[])
                if (!BIO_write_filename(out,outfile))
                        {
                        perror(outfile);
-                       exit(1);
+                       EXIT(1);
                        }
                }
 
@@ -234,18 +253,54 @@ int main(int argc, char *argv[])
        if (!test_sqrt(out,ctx)) goto err;
        BIO_flush(out);
 
+       message(out,"BN_GF2m_add");
+       if (!test_gf2m_add(out)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod");
+       if (!test_gf2m_mod(out)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod_mul");
+       if (!test_gf2m_mod_mul(out,ctx)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod_sqr");
+       if (!test_gf2m_mod_sqr(out,ctx)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod_inv");
+       if (!test_gf2m_mod_inv(out,ctx)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod_div");
+       if (!test_gf2m_mod_div(out,ctx)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod_exp");
+       if (!test_gf2m_mod_exp(out,ctx)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod_sqrt");
+       if (!test_gf2m_mod_sqrt(out,ctx)) goto err;
+       BIO_flush(out);
+
+       message(out,"BN_GF2m_mod_solve_quad");
+       if (!test_gf2m_mod_solve_quad(out,ctx)) goto err;
+       BIO_flush(out);
+
        BN_CTX_free(ctx);
        BIO_free(out);
 
 /**/
-       exit(0);
+       EXIT(0);
 err:
        BIO_puts(out,"1\n"); /* make sure the Perl script fed by bc notices
                              * the failure, see test_bn in test/Makefile.ssl*/
        BIO_flush(out);
        ERR_load_crypto_strings();
        ERR_print_errors_fp(stderr);
-       exit(1);
+       EXIT(1);
        return(1);
        }
 
@@ -485,9 +540,11 @@ int test_mul(BIO *bp)
        {
        BIGNUM a,b,c,d,e;
        int i;
-       BN_CTX ctx;
+       BN_CTX *ctx;
 
-       BN_CTX_init(&ctx);
+       ctx = BN_CTX_new();
+       if (ctx == NULL) EXIT(1);
+       
        BN_init(&a);
        BN_init(&b);
        BN_init(&c);
@@ -505,7 +562,7 @@ int test_mul(BIO *bp)
                        BN_bntest_rand(&b,i-num1,0,0);
                a.neg=rand_neg();
                b.neg=rand_neg();
-               BN_mul(&c,&a,&b,&ctx);
+               BN_mul(&c,&a,&b,ctx);
                if (bp != NULL)
                        {
                        if (!results)
@@ -518,7 +575,7 @@ int test_mul(BIO *bp)
                        BN_print(bp,&c);
                        BIO_puts(bp,"\n");
                        }
-               BN_div(&d,&e,&c,&a,&ctx);
+               BN_div(&d,&e,&c,&a,ctx);
                BN_sub(&d,&d,&b);
                if(!BN_is_zero(&d) || !BN_is_zero(&e))
                    {
@@ -531,7 +588,7 @@ int test_mul(BIO *bp)
        BN_free(&c);
        BN_free(&d);
        BN_free(&e);
-       BN_CTX_free(&ctx);
+       BN_CTX_free(ctx);
        return(1);
        }
 
@@ -724,7 +781,7 @@ int test_mod_mul(BIO *bp, BN_CTX *ctx)
                        while ((l=ERR_get_error()))
                                fprintf(stderr,"ERROR:%s\n",
                                        ERR_error_string(l,NULL));
-                       exit(1);
+                       EXIT(1);
                        }
                if (bp != NULL)
                        {
@@ -870,7 +927,582 @@ int test_exp(BIO *bp, BN_CTX *ctx)
        return(1);
        }
 
-static void genprime_cb(int p, int n, void *arg)
+int test_gf2m_add(BIO *bp)
+       {
+       BIGNUM a,b,c;
+       int i, ret = 0;
+
+       BN_init(&a);
+       BN_init(&b);
+       BN_init(&c);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_rand(&a,512,0,0);
+               BN_copy(&b, BN_value_one());
+               a.neg=rand_neg();
+               b.neg=rand_neg();
+               BN_GF2m_add(&c,&a,&b);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+               if (bp != NULL)
+                       {
+                       if (!results)
+                               {
+                               BN_print(bp,&a);
+                               BIO_puts(bp," ^ ");
+                               BN_print(bp,&b);
+                               BIO_puts(bp," = ");
+                               }
+                       BN_print(bp,&c);
+                       BIO_puts(bp,"\n");
+                       }
+#endif
+               /* Test that two added values have the correct parity. */
+               if((BN_is_odd(&a) && BN_is_odd(&c)) || (!BN_is_odd(&a) && !BN_is_odd(&c)))
+                       {
+                   fprintf(stderr,"GF(2^m) addition test (a) failed!\n");
+                       goto err;
+                       }
+               BN_GF2m_add(&c,&c,&c);
+               /* Test that c + c = 0. */
+               if(!BN_is_zero(&c))
+                   {
+                   fprintf(stderr,"GF(2^m) addition test (b) failed!\n");
+                       goto err;
+                   }
+               }
+       ret = 1;
+  err:
+       BN_free(&a);
+       BN_free(&b);
+       BN_free(&c);
+       return ret;
+       }
+
+int test_gf2m_mod(BIO *bp)
+       {
+       BIGNUM *a,*b[2],*c,*d,*e;
+       int i, j, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+       e=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 1024, 0, 0);
+               for (j=0; j < 2; j++)
+                       {
+                       BN_GF2m_mod(c, a, b[j]);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                       if (bp != NULL)
+                               {
+                               if (!results)
+                                       {
+                                       BN_print(bp,a);
+                                       BIO_puts(bp," % ");
+                                       BN_print(bp,b[j]);
+                                       BIO_puts(bp," - ");
+                                       BN_print(bp,c);
+                                       BIO_puts(bp,"\n");
+                                       }
+                               }
+#endif
+                       BN_GF2m_add(d, a, c);
+                       BN_GF2m_mod(e, d, b[j]);
+                       /* Test that a + (a mod p) mod p == 0. */
+                       if(!BN_is_zero(e))
+                               {
+                               fprintf(stderr,"GF(2^m) modulo test failed!\n");
+                               goto err;
+                               }
+                       }
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       BN_free(e);
+       return ret;
+       }
+
+int test_gf2m_mod_mul(BIO *bp,BN_CTX *ctx)
+       {
+       BIGNUM *a,*b[2],*c,*d,*e,*f,*g,*h;
+       int i, j, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+       e=BN_new();
+       f=BN_new();
+       g=BN_new();
+       h=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 1024, 0, 0);
+               BN_bntest_rand(c, 1024, 0, 0);
+               BN_bntest_rand(d, 1024, 0, 0);
+               for (j=0; j < 2; j++)
+                       {
+                       BN_GF2m_mod_mul(e, a, c, b[j], ctx);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                       if (bp != NULL)
+                               {
+                               if (!results)
+                                       {
+                                       BN_print(bp,a);
+                                       BIO_puts(bp," * ");
+                                       BN_print(bp,c);
+                                       BIO_puts(bp," % ");
+                                       BN_print(bp,b[j]);
+                                       BIO_puts(bp," - ");
+                                       BN_print(bp,e);
+                                       BIO_puts(bp,"\n");
+                                       }
+                               }
+#endif
+                       BN_GF2m_add(f, a, d);
+                       BN_GF2m_mod_mul(g, f, c, b[j], ctx);
+                       BN_GF2m_mod_mul(h, d, c, b[j], ctx);
+                       BN_GF2m_add(f, e, g);
+                       BN_GF2m_add(f, f, h);
+                       /* Test that (a+d)*c = a*c + d*c. */
+                       if(!BN_is_zero(f))
+                               {
+                               fprintf(stderr,"GF(2^m) modular multiplication test failed!\n");
+                               goto err;
+                               }
+                       }
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       BN_free(e);
+       BN_free(f);
+       BN_free(g);
+       BN_free(h);
+       return ret;
+       }
+
+int test_gf2m_mod_sqr(BIO *bp,BN_CTX *ctx)
+       {
+       BIGNUM *a,*b[2],*c,*d;
+       int i, j, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 1024, 0, 0);
+               for (j=0; j < 2; j++)
+                       {
+                       BN_GF2m_mod_sqr(c, a, b[j], ctx);
+                       BN_copy(d, a);
+                       BN_GF2m_mod_mul(d, a, d, b[j], ctx);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                       if (bp != NULL)
+                               {
+                               if (!results)
+                                       {
+                                       BN_print(bp,a);
+                                       BIO_puts(bp," ^ 2 % ");
+                                       BN_print(bp,b[j]);
+                                       BIO_puts(bp, " = ");
+                                       BN_print(bp,c);
+                                       BIO_puts(bp,"; a * a = ");
+                                       BN_print(bp,d);
+                                       BIO_puts(bp,"\n");
+                                       }
+                               }
+#endif
+                       BN_GF2m_add(d, c, d);
+                       /* Test that a*a = a^2. */
+                       if(!BN_is_zero(d))
+                               {
+                               fprintf(stderr,"GF(2^m) modular squaring test failed!\n");
+                               goto err;
+                               }
+                       }
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       return ret;
+       }
+
+int test_gf2m_mod_inv(BIO *bp,BN_CTX *ctx)
+       {
+       BIGNUM *a,*b[2],*c,*d;
+       int i, j, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 512, 0, 0); 
+               for (j=0; j < 2; j++)
+                       {
+                       BN_GF2m_mod_inv(c, a, b[j], ctx);
+                       BN_GF2m_mod_mul(d, a, c, b[j], ctx);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                       if (bp != NULL)
+                               {
+                               if (!results)
+                                       {
+                                       BN_print(bp,a);
+                                       BIO_puts(bp, " * ");
+                                       BN_print(bp,c);
+                                       BIO_puts(bp," - 1 % ");
+                                       BN_print(bp,b[j]);
+                                       BIO_puts(bp,"\n");
+                                       }
+                               }
+#endif
+                       /* Test that ((1/a)*a) = 1. */
+                       if(!BN_is_one(d))
+                               {
+                               fprintf(stderr,"GF(2^m) modular inversion test failed!\n");
+                               goto err;
+                               }
+                       }
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       return ret;
+       }
+
+int test_gf2m_mod_div(BIO *bp,BN_CTX *ctx)
+       {
+       BIGNUM *a,*b[2],*c,*d,*e,*f;
+       int i, j, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+       e=BN_new();
+       f=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 512, 0, 0); 
+               BN_bntest_rand(c, 512, 0, 0);
+               for (j=0; j < 2; j++)
+                       {
+                       BN_GF2m_mod_div(d, a, c, b[j], ctx);
+                       BN_GF2m_mod_mul(e, d, c, b[j], ctx);
+                       BN_GF2m_mod_div(f, a, e, b[j], ctx);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                       if (bp != NULL)
+                               {
+                               if (!results)
+                                       {
+                                       BN_print(bp,a);
+                                       BIO_puts(bp, " = ");
+                                       BN_print(bp,c);
+                                       BIO_puts(bp," * ");
+                                       BN_print(bp,d);
+                                       BIO_puts(bp, " % ");
+                                       BN_print(bp,b[j]);
+                                       BIO_puts(bp,"\n");
+                                       }
+                               }
+#endif
+                       /* Test that ((a/c)*c)/a = 1. */
+                       if(!BN_is_one(f))
+                               {
+                               fprintf(stderr,"GF(2^m) modular division test failed!\n");
+                               goto err;
+                               }
+                       }
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       BN_free(e);
+       BN_free(f);
+       return ret;
+       }
+
+int test_gf2m_mod_exp(BIO *bp,BN_CTX *ctx)
+       {
+       BIGNUM *a,*b[2],*c,*d,*e,*f;
+       int i, j, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+       e=BN_new();
+       f=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 512, 0, 0);
+               BN_bntest_rand(c, 512, 0, 0);
+               BN_bntest_rand(d, 512, 0, 0);
+               for (j=0; j < 2; j++)
+                       {
+                       BN_GF2m_mod_exp(e, a, c, b[j], ctx);
+                       BN_GF2m_mod_exp(f, a, d, b[j], ctx);
+                       BN_GF2m_mod_mul(e, e, f, b[j], ctx);
+                       BN_add(f, c, d);
+                       BN_GF2m_mod_exp(f, a, f, b[j], ctx);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                       if (bp != NULL)
+                               {
+                               if (!results)
+                                       {
+                                       BN_print(bp,a);
+                                       BIO_puts(bp, " ^ (");
+                                       BN_print(bp,c);
+                                       BIO_puts(bp," + ");
+                                       BN_print(bp,d);
+                                       BIO_puts(bp, ") = ");
+                                       BN_print(bp,e);
+                                       BIO_puts(bp, "; - ");
+                                       BN_print(bp,f);
+                                       BIO_puts(bp, " % ");
+                                       BN_print(bp,b[j]);
+                                       BIO_puts(bp,"\n");
+                                       }
+                               }
+#endif
+                       BN_GF2m_add(f, e, f);
+                       /* Test that a^(c+d)=a^c*a^d. */
+                       if(!BN_is_zero(f))
+                               {
+                               fprintf(stderr,"GF(2^m) modular exponentiation test failed!\n");
+                               goto err;
+                               }
+                       }
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       BN_free(e);
+       BN_free(f);
+       return ret;
+       }
+
+int test_gf2m_mod_sqrt(BIO *bp,BN_CTX *ctx)
+       {
+       BIGNUM *a,*b[2],*c,*d,*e,*f;
+       int i, j, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+       e=BN_new();
+       f=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 512, 0, 0);
+               for (j=0; j < 2; j++)
+                       {
+                       BN_GF2m_mod(c, a, b[j]);
+                       BN_GF2m_mod_sqrt(d, a, b[j], ctx);
+                       BN_GF2m_mod_sqr(e, d, b[j], ctx);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                       if (bp != NULL)
+                               {
+                               if (!results)
+                                       {
+                                       BN_print(bp,d);
+                                       BIO_puts(bp, " ^ 2 - ");
+                                       BN_print(bp,a);
+                                       BIO_puts(bp,"\n");
+                                       }
+                               }
+#endif
+                       BN_GF2m_add(f, c, e);
+                       /* Test that d^2 = a, where d = sqrt(a). */
+                       if(!BN_is_zero(f))
+                               {
+                               fprintf(stderr,"GF(2^m) modular square root test failed!\n");
+                               goto err;
+                               }
+                       }
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       BN_free(e);
+       BN_free(f);
+       return ret;
+       }
+
+int test_gf2m_mod_solve_quad(BIO *bp,BN_CTX *ctx)
+       {
+       BIGNUM *a,*b[2],*c,*d,*e;
+       int i, j, s = 0, t, ret = 0;
+       unsigned int p0[] = {163,7,6,3,0};
+       unsigned int p1[] = {193,15,0};
+
+       a=BN_new();
+       b[0]=BN_new();
+       b[1]=BN_new();
+       c=BN_new();
+       d=BN_new();
+       e=BN_new();
+
+       BN_GF2m_arr2poly(p0, b[0]);
+       BN_GF2m_arr2poly(p1, b[1]);
+
+       for (i=0; i<num0; i++)
+               {
+               BN_bntest_rand(a, 512, 0, 0);
+               for (j=0; j < 2; j++)
+                       {
+                       t = BN_GF2m_mod_solve_quad(c, a, b[j], ctx);
+                       if (t)
+                               {
+                               s++;
+                               BN_GF2m_mod_sqr(d, c, b[j], ctx);
+                               BN_GF2m_add(d, c, d);
+                               BN_GF2m_mod(e, a, b[j]);
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                               if (bp != NULL)
+                                       {
+                                       if (!results)
+                                               {
+                                               BN_print(bp,c);
+                                               BIO_puts(bp, " is root of z^2 + z = ");
+                                               BN_print(bp,a);
+                                               BIO_puts(bp, " % ");
+                                               BN_print(bp,b[j]);
+                                               BIO_puts(bp, "\n");
+                                               }
+                                       }
+#endif
+                               BN_GF2m_add(e, e, d);
+                               /* Test that solution of quadratic c satisfies c^2 + c = a. */
+                               if(!BN_is_zero(e))
+                                       {
+                                       fprintf(stderr,"GF(2^m) modular solve quadratic test failed!\n");
+                                       goto err;
+                                       }
+
+                               }
+                       else 
+                               {
+#if 0 /* make test uses ouput in bc but bc can't handle GF(2^m) arithmetic */
+                               if (bp != NULL)
+                                       {
+                                       if (!results)
+                                               {
+                                               BIO_puts(bp, "There are no roots of z^2 + z = ");
+                                               BN_print(bp,a);
+                                               BIO_puts(bp, " % ");
+                                               BN_print(bp,b[j]);
+                                               BIO_puts(bp, "\n");
+                                               }
+                                       }
+#endif
+                               }
+                       }
+               }
+       if (s == 0)
+               {       
+               fprintf(stderr,"All %i tests of GF(2^m) modular solve quadratic resulted in no roots;\n", num0);
+               fprintf(stderr,"this is very unlikely and probably indicates an error.\n");
+               goto err;
+               }
+       ret = 1;
+  err:
+       BN_free(a);
+       BN_free(b[0]);
+       BN_free(b[1]);
+       BN_free(c);
+       BN_free(d);
+       BN_free(e);
+       return ret;
+       }
+
+static int genprime_cb(int p, int n, BN_GENCB *arg)
        {
        char c='*';
 
@@ -880,12 +1512,12 @@ static void genprime_cb(int p, int n, void *arg)
        if (p == 3) c='\n';
        putc(c, stderr);
        fflush(stderr);
-       (void)n;
-       (void)arg;
+       return 1;
        }
 
 int test_kron(BIO *bp, BN_CTX *ctx)
        {
+       BN_GENCB cb;
        BIGNUM *a,*b,*r,*t;
        int i;
        int legendre, kronecker;
@@ -896,6 +1528,8 @@ int test_kron(BIO *bp, BN_CTX *ctx)
        r = BN_new();
        t = BN_new();
        if (a == NULL || b == NULL || r == NULL || t == NULL) goto err;
+
+       BN_GENCB_set(&cb, genprime_cb, NULL);
        
        /* We test BN_kronecker(a, b, ctx) just for  b  odd (Jacobi symbol).
         * In this case we know that if  b  is prime, then BN_kronecker(a, b, ctx)
@@ -906,7 +1540,7 @@ int test_kron(BIO *bp, BN_CTX *ctx)
         * don't want to test whether  b  is prime but whether BN_kronecker
         * works.) */
 
-       if (!BN_generate_prime(b, 512, 0, NULL, NULL, genprime_cb, NULL)) goto err;
+       if (!BN_generate_prime_ex(b, 512, 0, NULL, NULL, &cb)) goto err;
        b->neg = rand_neg();
        putc('\n', stderr);
 
@@ -923,7 +1557,7 @@ int test_kron(BIO *bp, BN_CTX *ctx)
                /* r := a^t mod b */
                b->neg=0;
                
-               if (!BN_mod_exp_recp(r, a, t, b, ctx)) goto err; /* XXX should be BN_mod_exp_recp, but ..._recp triggers a bug that must be fixed */
+               if (!BN_mod_exp_recp(r, a, t, b, ctx)) goto err;
                b->neg=1;
 
                if (BN_is_word(r, 1))
@@ -974,6 +1608,7 @@ int test_kron(BIO *bp, BN_CTX *ctx)
 
 int test_sqrt(BIO *bp, BN_CTX *ctx)
        {
+       BN_GENCB cb;
        BIGNUM *a,*p,*r;
        int i, j;
        int ret = 0;
@@ -982,7 +1617,9 @@ int test_sqrt(BIO *bp, BN_CTX *ctx)
        p = BN_new();
        r = BN_new();
        if (a == NULL || p == NULL || r == NULL) goto err;
-       
+
+       BN_GENCB_set(&cb, genprime_cb, NULL);
+
        for (i = 0; i < 16; i++)
                {
                if (i < 8)
@@ -996,7 +1633,7 @@ int test_sqrt(BIO *bp, BN_CTX *ctx)
                        if (!BN_set_word(a, 32)) goto err;
                        if (!BN_set_word(r, 2*i + 1)) goto err;
                
-                       if (!BN_generate_prime(p, 256, 0, a, r, genprime_cb, NULL)) goto err;
+                       if (!BN_generate_prime_ex(p, 256, 0, a, r, &cb)) goto err;
                        putc('\n', stderr);
                        }
                p->neg = rand_neg();