Check for OPENSSL_NO_RSA, OPENSSL_NO_DSA and OPENSSL_NO_DH and disable

[openssl.git] / crypto / engine / hw_atalla.c

diff --git a/crypto/engine/hw_atalla.c b/crypto/engine/hw_atalla.c
index 8bf702aac0b1331ad492bccefcec1f2047c49088..5deb2c43828803eaf0c3c83f2e7828b47cf9c900 100644 (file)
--- a/crypto/engine/hw_atalla.c
+++ b/crypto/engine/hw_atalla.c
@@ -79,12 +79,15 @@ static int atalla_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
 static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
                const BIGNUM *m, BN_CTX *ctx);
 
+#ifndef OPENSSL_NO_RSA
 /* RSA stuff */
 static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
+#endif
 /* This function is aliased to mod_exp (with the mont stuff dropped). */
 static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
                const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
 
+#ifndef OPENSSL_NO_DSA
 /* DSA stuff */
 static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
                BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
@@ -92,12 +95,15 @@ static int atalla_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
 static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
                const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
                BN_MONT_CTX *m_ctx);
+#endif
 
+#ifndef OPENSSL_NO_DH
 /* DH stuff */
 /* This function is alised to mod_exp (with the DH and mont dropped). */
 static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,
                const BIGNUM *a, const BIGNUM *p,
                const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+#endif
 
 /* The definitions for control commands specific to this engine */
 #define ATALLA_CMD_SO_PATH             ENGINE_CMD_BASE
@@ -109,6 +115,7 @@ static const ENGINE_CMD_DEFN atalla_cmd_defns[] = {
        {0, NULL, NULL, 0}
        };
 
+#ifndef OPENSSL_NO_RSA
 /* Our internal RSA_METHOD that we provide pointers to */
 static RSA_METHOD atalla_rsa =
        {
@@ -126,7 +133,9 @@ static RSA_METHOD atalla_rsa =
        NULL,
        NULL
        };
+#endif
 
+#ifndef OPENSSL_NO_DSA
 /* Our internal DSA_METHOD that we provide pointers to */
 static DSA_METHOD atalla_dsa =
        {
@@ -141,7 +150,9 @@ static DSA_METHOD atalla_dsa =
        0, /* flags */
        NULL /* app_data */
        };
+#endif
 
+#ifndef OPENSSL_NO_DH
 /* Our internal DH_METHOD that we provide pointers to */
 static DH_METHOD atalla_dh =
        {
@@ -154,6 +165,7 @@ static DH_METHOD atalla_dh =
        0,
        NULL
        };
+#endif
 
 /* Constants used when creating the ENGINE */
 static const char *engine_atalla_id = "atalla";
@@ -163,17 +175,29 @@ static const char *engine_atalla_name = "Atalla hardware engine support";
  * (indeed - the lock will already be held by our caller!!!) */
 ENGINE *ENGINE_atalla()
        {
+#ifndef OPENSSL_NO_RSA
        const RSA_METHOD *meth1;
+#endif
+#ifndef OPENSSL_NO_DSA
        const DSA_METHOD *meth2;
+#endif
+#ifndef OPENSSL_NO_DH
        const DH_METHOD *meth3;
+#endif
        ENGINE *ret = ENGINE_new();
        if(!ret)
                return NULL;
        if(!ENGINE_set_id(ret, engine_atalla_id) ||
                        !ENGINE_set_name(ret, engine_atalla_name) ||
+#ifndef OPENSSL_NO_RSA
                        !ENGINE_set_RSA(ret, &atalla_rsa) ||
+#endif
+#ifndef OPENSSL_NO_DSA
                        !ENGINE_set_DSA(ret, &atalla_dsa) ||
+#endif
+#ifndef OPENSSL_NO_DH
                        !ENGINE_set_DH(ret, &atalla_dh) ||
+#endif
                        !ENGINE_set_BN_mod_exp(ret, atalla_mod_exp) ||
                        !ENGINE_set_init_function(ret, atalla_init) ||
                        !ENGINE_set_finish_function(ret, atalla_finish) ||
@@ -184,6 +208,7 @@ ENGINE *ENGINE_atalla()
                return NULL;
                }
 
+#ifndef OPENSSL_NO_RSA
        /* We know that the "PKCS1_SSLeay()" functions hook properly
         * to the atalla-specific mod_exp and mod_exp_crt so we use
         * those functions. NB: We don't use ENGINE_openssl() or
@@ -196,18 +221,23 @@ ENGINE *ENGINE_atalla()
        atalla_rsa.rsa_pub_dec = meth1->rsa_pub_dec;
        atalla_rsa.rsa_priv_enc = meth1->rsa_priv_enc;
        atalla_rsa.rsa_priv_dec = meth1->rsa_priv_dec;
+#endif
 
+#ifndef OPENSSL_NO_DSA
        /* Use the DSA_OpenSSL() method and just hook the mod_exp-ish
         * bits. */
        meth2 = DSA_OpenSSL();
        atalla_dsa.dsa_do_sign = meth2->dsa_do_sign;
        atalla_dsa.dsa_sign_setup = meth2->dsa_sign_setup;
        atalla_dsa.dsa_do_verify = meth2->dsa_do_verify;
+#endif
 
+#ifndef OPENSSL_NO_DH
        /* Much the same for Diffie-Hellman */
        meth3 = DH_OpenSSL();
        atalla_dh.generate_key = meth3->generate_key;
        atalla_dh.compute_key = meth3->compute_key;
+#endif
        return ret;
        }
 
@@ -405,6 +435,7 @@ static int atalla_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
                ENGINEerr(ENGINE_F_ATALLA_MOD_EXP,ENGINE_R_REQUEST_FAILED);
                goto err;
        }
+
        /* Convert the response */
        BN_bin2bn((unsigned char *)result->d, numbytes, r);
        to_return = 1;
@@ -413,6 +444,7 @@ err:
        return to_return;
        }
 
+#ifndef OPENSSL_NO_RSA
 static int atalla_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
        {
        BN_CTX *ctx = NULL;
@@ -436,7 +468,9 @@ err:
                BN_CTX_free(ctx);
        return to_return;
        }
+#endif
 
+#ifndef OPENSSL_NO_DSA
 /* This code was liberated and adapted from the commented-out code in
  * dsa_ossl.c. Because of the unoptimised form of the Atalla acceleration
  * (it doesn't have a CRT form for RSA), this function means that an
@@ -464,13 +498,13 @@ end:
        return to_return;
        }
 
-
 static int atalla_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
                const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
                BN_MONT_CTX *m_ctx)
        {
        return atalla_mod_exp(r, a, p, m, ctx);
        }
+#endif
 
 /* This function is aliased to mod_exp (with the mont stuff dropped). */
 static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
@@ -479,6 +513,7 @@ static int atalla_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
        return atalla_mod_exp(r, a, p, m, ctx);
        }
 
+#ifndef OPENSSL_NO_DH
 /* This function is aliased to mod_exp (with the dh and mont dropped). */
 static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,
                const BIGNUM *a, const BIGNUM *p,
@@ -486,6 +521,7 @@ static int atalla_mod_exp_dh(const DH *dh, BIGNUM *r,
        {
        return atalla_mod_exp(r, a, p, m, ctx);
        }
+#endif
 
 #endif /* !OPENSSL_NO_HW_ATALLA */
 #endif /* !OPENSSL_NO_HW */