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[cassiopeia.git] / lib / openssl / crypto / srp / srptest.c
diff --git a/lib/openssl/crypto/srp/srptest.c b/lib/openssl/crypto/srp/srptest.c
new file mode 100644 (file)
index 0000000..04b66b4
--- /dev/null
@@ -0,0 +1,162 @@
+#include <openssl/opensslconf.h>
+#ifdef OPENSSL_NO_SRP
+
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+       {
+       printf("No SRP support\n");
+       return(0);
+       }
+
+#else
+
+#include <openssl/srp.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+
+static void showbn(const char *name, const BIGNUM *bn)
+       {
+       fputs(name, stdout);
+       fputs(" = ", stdout);
+       BN_print_fp(stdout, bn);
+       putc('\n', stdout);
+       }
+
+#define RANDOM_SIZE 32 /* use 256 bits on each side */
+
+static int run_srp(const char *username, const char *client_pass, const char *server_pass)
+       {
+       int ret=-1;
+       BIGNUM *s = NULL;
+       BIGNUM *v = NULL;
+       BIGNUM *a = NULL;
+       BIGNUM *b = NULL;
+       BIGNUM *u = NULL;
+       BIGNUM *x = NULL;
+       BIGNUM *Apub = NULL;
+       BIGNUM *Bpub = NULL;
+       BIGNUM *Kclient = NULL;
+       BIGNUM *Kserver = NULL;
+       unsigned char rand_tmp[RANDOM_SIZE];
+       /* use builtin 1024-bit params */
+       SRP_gN *GN = SRP_get_default_gN("1024");
+
+       if(GN == NULL)
+               {
+               fprintf(stderr, "Failed to get SRP parameters\n");
+               return -1;
+               }
+       /* Set up server's password entry */
+       if(!SRP_create_verifier_BN(username, server_pass, &s, &v, GN->N, GN->g))
+               {
+               fprintf(stderr, "Failed to create SRP verifier\n");
+               return -1;
+               }
+
+       showbn("N", GN->N);
+       showbn("g", GN->g);
+       showbn("Salt", s);
+       showbn("Verifier", v);
+
+       /* Server random */
+       RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp));
+       b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
+       /* TODO - check b != 0 */
+       showbn("b", b);
+
+       /* Server's first message */
+       Bpub = SRP_Calc_B(b, GN->N, GN->g, v);
+       showbn("B", Bpub);
+
+       if(!SRP_Verify_B_mod_N(Bpub, GN->N))
+               {
+               fprintf(stderr, "Invalid B\n");
+               return -1;
+               }
+
+       /* Client random */
+       RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp));
+       a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL);
+       /* TODO - check a != 0 */
+       showbn("a", a);
+
+       /* Client's response */
+       Apub = SRP_Calc_A(a, GN->N, GN->g);
+       showbn("A", Apub);
+
+       if(!SRP_Verify_A_mod_N(Apub, GN->N))
+               {
+               fprintf(stderr, "Invalid A\n");
+               return -1;
+               }
+
+       /* Both sides calculate u */
+       u = SRP_Calc_u(Apub, Bpub, GN->N);
+
+       /* Client's key */
+       x = SRP_Calc_x(s, username, client_pass);
+       Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u);
+       showbn("Client's key", Kclient);
+
+       /* Server's key */
+       Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N);
+       showbn("Server's key", Kserver);
+
+       if(BN_cmp(Kclient, Kserver) == 0)
+               {
+               ret = 0;
+               }
+       else
+               {
+               fprintf(stderr, "Keys mismatch\n");
+               ret = 1;
+               }
+
+       BN_clear_free(Kclient);
+       BN_clear_free(Kserver);
+       BN_clear_free(x);
+       BN_free(u);
+       BN_free(Apub);
+       BN_clear_free(a);
+       BN_free(Bpub);
+       BN_clear_free(b);
+       BN_free(s);
+       BN_clear_free(v);
+
+       return ret;
+       }
+
+int main(int argc, char **argv)
+       {
+       BIO *bio_err;
+       bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
+
+       CRYPTO_malloc_debug_init();
+       CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL);
+       CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+       ERR_load_crypto_strings();
+
+       /* "Negative" test, expect a mismatch */
+       if(run_srp("alice", "password1", "password2") == 0)
+               {
+               fprintf(stderr, "Mismatched SRP run failed\n");
+               return 1;
+               }
+
+       /* "Positive" test, should pass */
+       if(run_srp("alice", "password", "password") != 0)
+               {
+               fprintf(stderr, "Plain SRP run failed\n");
+               return 1;
+               }
+
+       CRYPTO_cleanup_all_ex_data();
+       ERR_remove_thread_state(NULL);
+       ERR_free_strings();
+       CRYPTO_mem_leaks(bio_err);
+
+       return 0;
+       }
+#endif