X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fp_lib.c;h=653693e1dce0de1f356d349d25233f6a9fc9f8c3;hp=0b7884f9e569d11c37059cd48e28f2464e1aa4b5;hb=4cae07fef3b24bee1646f6085c52175ef3755d5b;hpb=6286757141a8c6e14d647ec733634ae0c83d9887

diff --git a/crypto/evp/p_lib.c b/crypto/evp/p_lib.c
index 0b7884f9e5..653693e1dc 100644
--- a/crypto/evp/p_lib.c
+++ b/crypto/evp/p_lib.c
@@ -1,7 +1,7 @@
 /*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
@@ -9,6 +9,7 @@
 
 #include <stdio.h>
 #include "internal/cryptlib.h"
+#include "internal/refcount.h"
 #include <openssl/bn.h>
 #include <openssl/err.h>
 #include <openssl/objects.h>
@@ -17,6 +18,7 @@
 #include <openssl/rsa.h>
 #include <openssl/dsa.h>
 #include <openssl/dh.h>
+#include <openssl/cmac.h>
 #include <openssl/engine.h>
 
 #include "internal/asn1_int.h"
@@ -24,7 +26,7 @@
 
 static void EVP_PKEY_free_it(EVP_PKEY *x);
 
-int EVP_PKEY_bits(EVP_PKEY *pkey)
+int EVP_PKEY_bits(const EVP_PKEY *pkey)
 {
     if (pkey && pkey->ameth && pkey->ameth->pkey_bits)
         return pkey->ameth->pkey_bits(pkey);
@@ -40,7 +42,7 @@ int EVP_PKEY_security_bits(const EVP_PKEY *pkey)
     return pkey->ameth->pkey_security_bits(pkey);
 }
 
-int EVP_PKEY_size(EVP_PKEY *pkey)
+int EVP_PKEY_size(const EVP_PKEY *pkey)
 {
     if (pkey && pkey->ameth && pkey->ameth->pkey_size)
         return pkey->ameth->pkey_size(pkey);
@@ -55,7 +57,7 @@ int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
 
         if (mode >= 0)
             pkey->save_parameters = mode;
-        return (ret);
+        return ret;
     }
 #endif
 #ifndef OPENSSL_NO_EC
@@ -64,10 +66,10 @@ int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
 
         if (mode >= 0)
             pkey->save_parameters = mode;
-        return (ret);
+        return ret;
     }
 #endif
-    return (0);
+    return 0;
 }
 
 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
@@ -84,6 +86,14 @@ int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
         EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_MISSING_PARAMETERS);
         goto err;
     }
+
+    if (!EVP_PKEY_missing_parameters(to)) {
+        if (EVP_PKEY_cmp_parameters(to, from) == 1)
+            return 1;
+        EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS, EVP_R_DIFFERENT_PARAMETERS);
+        return 0;
+    }
+
     if (from->ameth && from->ameth->param_copy)
         return from->ameth->param_copy(to, from);
  err:
@@ -152,7 +162,7 @@ int EVP_PKEY_up_ref(EVP_PKEY *pkey)
 {
     int i;
 
-    if (CRYPTO_atomic_add(&pkey->references, 1, &i, pkey->lock) <= 0)
+    if (CRYPTO_UP_REF(&pkey->references, &i, pkey->lock) <= 0)
         return 0;
 
     REF_PRINT_COUNT("EVP_PKEY", pkey);
@@ -165,10 +175,12 @@ int EVP_PKEY_up_ref(EVP_PKEY *pkey)
  * is NULL just return 1 or 0 if the algorithm exists.
  */
 
-static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
+static int pkey_set_type(EVP_PKEY *pkey, ENGINE *e, int type, const char *str,
+                         int len)
 {
     const EVP_PKEY_ASN1_METHOD *ameth;
-    ENGINE *e = NULL;
+    ENGINE **eptr = (e == NULL) ? &e :  NULL;
+
     if (pkey) {
         if (pkey->pkey.ptr)
             EVP_PKEY_free_it(pkey);
@@ -179,17 +191,19 @@ static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
         if ((type == pkey->save_type) && pkey->ameth)
             return 1;
 #ifndef OPENSSL_NO_ENGINE
-        /* If we have an ENGINE release it */
+        /* If we have ENGINEs release them */
         ENGINE_finish(pkey->engine);
         pkey->engine = NULL;
+        ENGINE_finish(pkey->pmeth_engine);
+        pkey->pmeth_engine = NULL;
 #endif
     }
     if (str)
-        ameth = EVP_PKEY_asn1_find_str(&e, str, len);
+        ameth = EVP_PKEY_asn1_find_str(eptr, str, len);
     else
-        ameth = EVP_PKEY_asn1_find(&e, type);
+        ameth = EVP_PKEY_asn1_find(eptr, type);
 #ifndef OPENSSL_NO_ENGINE
-    if (pkey == NULL)
+    if (pkey == NULL && eptr != NULL)
         ENGINE_finish(e);
 #endif
     if (ameth == NULL) {
@@ -206,16 +220,188 @@ static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
     return 1;
 }
 
+EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *e,
+                                       const unsigned char *priv,
+                                       size_t len)
+{
+    EVP_PKEY *ret = EVP_PKEY_new();
+
+    if (ret == NULL
+            || !pkey_set_type(ret, e, type, NULL, -1)) {
+        /* EVPerr already called */
+        goto err;
+    }
+
+    if (ret->ameth->set_priv_key == NULL) {
+        EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        goto err;
+    }
+
+    if (!ret->ameth->set_priv_key(ret, priv, len)) {
+        EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PRIVATE_KEY, EVP_R_KEY_SETUP_FAILED);
+        goto err;
+    }
+
+    return ret;
+
+ err:
+    EVP_PKEY_free(ret);
+    return NULL;
+}
+
+EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *e,
+                                      const unsigned char *pub,
+                                      size_t len)
+{
+    EVP_PKEY *ret = EVP_PKEY_new();
+
+    if (ret == NULL
+            || !pkey_set_type(ret, e, type, NULL, -1)) {
+        /* EVPerr already called */
+        goto err;
+    }
+
+    if (ret->ameth->set_pub_key == NULL) {
+        EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        goto err;
+    }
+
+    if (!ret->ameth->set_pub_key(ret, pub, len)) {
+        EVPerr(EVP_F_EVP_PKEY_NEW_RAW_PUBLIC_KEY, EVP_R_KEY_SETUP_FAILED);
+        goto err;
+    }
+
+    return ret;
+
+ err:
+    EVP_PKEY_free(ret);
+    return NULL;
+}
+
+int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, unsigned char *priv,
+                                 size_t *len)
+{
+     if (pkey->ameth->get_priv_key == NULL) {
+        EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return 0;
+    }
+
+    if (!pkey->ameth->get_priv_key(pkey, priv, len)) {
+        EVPerr(EVP_F_EVP_PKEY_GET_RAW_PRIVATE_KEY, EVP_R_GET_RAW_KEY_FAILED);
+        return 0;
+    }
+
+    return 1;
+}
+
+int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, unsigned char *pub,
+                                size_t *len)
+{
+     if (pkey->ameth->get_pub_key == NULL) {
+        EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return 0;
+    }
+
+    if (!pkey->ameth->get_pub_key(pkey, pub, len)) {
+        EVPerr(EVP_F_EVP_PKEY_GET_RAW_PUBLIC_KEY, EVP_R_GET_RAW_KEY_FAILED);
+        return 0;
+    }
+
+    return 1;
+}
+
+EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
+                                size_t len, const EVP_CIPHER *cipher)
+{
+#ifndef OPENSSL_NO_CMAC
+    EVP_PKEY *ret = EVP_PKEY_new();
+    EVP_MAC_CTX *cmctx = EVP_MAC_CTX_new_id(EVP_MAC_CMAC);
+
+    if (ret == NULL
+            || cmctx == NULL
+            || !pkey_set_type(ret, e, EVP_PKEY_CMAC, NULL, -1)) {
+        /* EVPerr already called */
+        goto err;
+    }
+
+    if (EVP_MAC_ctrl(cmctx, EVP_MAC_CTRL_SET_ENGINE, e) <= 0
+        || EVP_MAC_ctrl(cmctx, EVP_MAC_CTRL_SET_CIPHER, cipher) <= 0
+        || EVP_MAC_ctrl(cmctx, EVP_MAC_CTRL_SET_KEY, priv, len) <= 0) {
+        EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY, EVP_R_KEY_SETUP_FAILED);
+        goto err;
+    }
+
+    ret->pkey.ptr = cmctx;
+    return ret;
+
+ err:
+    EVP_PKEY_free(ret);
+    EVP_MAC_CTX_free(cmctx);
+    return NULL;
+#else
+    EVPerr(EVP_F_EVP_PKEY_NEW_CMAC_KEY,
+           EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+    return NULL;
+#endif
+}
+
 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
 {
-    return pkey_set_type(pkey, type, NULL, -1);
+    return pkey_set_type(pkey, NULL, type, NULL, -1);
 }
 
 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
 {
-    return pkey_set_type(pkey, EVP_PKEY_NONE, str, len);
+    return pkey_set_type(pkey, NULL, EVP_PKEY_NONE, str, len);
+}
+
+int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type)
+{
+    if (pkey->type == type) {
+        return 1; /* it already is that type */
+    }
+
+    /*
+     * The application is requesting to alias this to a different pkey type,
+     * but not one that resolves to the base type.
+     */
+    if (EVP_PKEY_type(type) != EVP_PKEY_base_id(pkey)) {
+        EVPerr(EVP_F_EVP_PKEY_SET_ALIAS_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
+        return 0;
+    }
+
+    pkey->type = type;
+    return 1;
 }
 
+#ifndef OPENSSL_NO_ENGINE
+int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *e)
+{
+    if (e != NULL) {
+        if (!ENGINE_init(e)) {
+            EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, ERR_R_ENGINE_LIB);
+            return 0;
+        }
+        if (ENGINE_get_pkey_meth(e, pkey->type) == NULL) {
+            ENGINE_finish(e);
+            EVPerr(EVP_F_EVP_PKEY_SET1_ENGINE, EVP_R_UNSUPPORTED_ALGORITHM);
+            return 0;
+        }
+    }
+    ENGINE_finish(pkey->pmeth_engine);
+    pkey->pmeth_engine = e;
+    return 1;
+}
+
+ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey)
+{
+    return pkey->engine;
+}
+#endif
 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
 {
     if (pkey == NULL || !EVP_PKEY_set_type(pkey, type))
@@ -229,6 +415,47 @@ void *EVP_PKEY_get0(const EVP_PKEY *pkey)
     return pkey->pkey.ptr;
 }
 
+const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len)
+{
+    ASN1_OCTET_STRING *os = NULL;
+    if (pkey->type != EVP_PKEY_HMAC) {
+        EVPerr(EVP_F_EVP_PKEY_GET0_HMAC, EVP_R_EXPECTING_AN_HMAC_KEY);
+        return NULL;
+    }
+    os = EVP_PKEY_get0(pkey);
+    *len = os->length;
+    return os->data;
+}
+
+#ifndef OPENSSL_NO_POLY1305
+const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len)
+{
+    ASN1_OCTET_STRING *os = NULL;
+    if (pkey->type != EVP_PKEY_POLY1305) {
+        EVPerr(EVP_F_EVP_PKEY_GET0_POLY1305, EVP_R_EXPECTING_A_POLY1305_KEY);
+        return NULL;
+    }
+    os = EVP_PKEY_get0(pkey);
+    *len = os->length;
+    return os->data;
+}
+#endif
+
+#ifndef OPENSSL_NO_SIPHASH
+const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len)
+{
+    ASN1_OCTET_STRING *os = NULL;
+
+    if (pkey->type != EVP_PKEY_SIPHASH) {
+        EVPerr(EVP_F_EVP_PKEY_GET0_SIPHASH, EVP_R_EXPECTING_A_SIPHASH_KEY);
+        return NULL;
+    }
+    os = EVP_PKEY_get0(pkey);
+    *len = os->length;
+    return os->data;
+}
+#endif
+
 #ifndef OPENSSL_NO_RSA
 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
 {
@@ -238,7 +465,7 @@ int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
     return ret;
 }
 
-RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey)
+RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey)
 {
     if (pkey->type != EVP_PKEY_RSA) {
         EVPerr(EVP_F_EVP_PKEY_GET0_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
@@ -265,7 +492,7 @@ int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
     return ret;
 }
 
-DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey)
+DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey)
 {
     if (pkey->type != EVP_PKEY_DSA) {
         EVPerr(EVP_F_EVP_PKEY_GET0_DSA, EVP_R_EXPECTING_A_DSA_KEY);
@@ -293,7 +520,7 @@ int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
     return ret;
 }
 
-EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey)
+EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey)
 {
     if (pkey->type != EVP_PKEY_EC) {
         EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
@@ -321,7 +548,7 @@ int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
     return ret;
 }
 
-DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey)
+DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey)
 {
     if (pkey->type != EVP_PKEY_DH && pkey->type != EVP_PKEY_DHX) {
         EVPerr(EVP_F_EVP_PKEY_GET0_DH, EVP_R_EXPECTING_A_DH_KEY);
@@ -372,12 +599,13 @@ void EVP_PKEY_free(EVP_PKEY *x)
     if (x == NULL)
         return;
 
-    CRYPTO_atomic_add(&x->references, -1, &i, x->lock);
+    CRYPTO_DOWN_REF(&x->references, &i, x->lock);
     REF_PRINT_COUNT("EVP_PKEY", x);
     if (i > 0)
         return;
     REF_ASSERT_ISNT(i < 0);
     EVP_PKEY_free_it(x);
+    CRYPTO_THREAD_lock_free(x->lock);
     sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
     OPENSSL_free(x);
 }
@@ -385,6 +613,9 @@ void EVP_PKEY_free(EVP_PKEY *x)
 static void EVP_PKEY_free_it(EVP_PKEY *x)
 {
     /* internal function; x is never NULL */
+
+    evp_keymgmt_clear_pkey_cache(x);
+
     if (x->ameth && x->ameth->pkey_free) {
         x->ameth->pkey_free(x);
         x->pkey.ptr = NULL;
@@ -392,8 +623,9 @@ static void EVP_PKEY_free_it(EVP_PKEY *x)
 #ifndef OPENSSL_NO_ENGINE
     ENGINE_finish(x->engine);
     x->engine = NULL;
+    ENGINE_finish(x->pmeth_engine);
+    x->pmeth_engine = NULL;
 #endif
-    CRYPTO_THREAD_lock_free(x->lock);
 }
 
 static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
@@ -431,10 +663,54 @@ int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
     return unsup_alg(out, pkey, indent, "Parameters");
 }
 
-int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
+static int evp_pkey_asn1_ctrl(EVP_PKEY *pkey, int op, int arg1, void *arg2)
 {
-    if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
+    if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL)
         return -2;
-    return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID,
-                                  0, pnid);
+    return pkey->ameth->pkey_ctrl(pkey, op, arg1, arg2);
+}
+
+int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
+{
+    return evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID, 0, pnid);
+}
+
+int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid)
+{
+    int rv, default_nid;
+
+    rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SUPPORTS_MD_NID, nid, NULL);
+    if (rv == -2) {
+        /*
+         * If there is a mandatory default digest and this isn't it, then
+         * the answer is 'no'.
+         */
+        rv = EVP_PKEY_get_default_digest_nid(pkey, &default_nid);
+        if (rv == 2)
+            return (nid == default_nid);
+        /* zero is an error from EVP_PKEY_get_default_digest_nid() */
+        if (rv == 0)
+            return -1;
+    }
+    return rv;
+}
+
+int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey,
+                               const unsigned char *pt, size_t ptlen)
+{
+    if (ptlen > INT_MAX)
+        return 0;
+    if (evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_SET1_TLS_ENCPT, ptlen,
+                           (void *)pt) <= 0)
+        return 0;
+    return 1;
+}
+
+size_t EVP_PKEY_get1_tls_encodedpoint(EVP_PKEY *pkey, unsigned char **ppt)
+{
+    int rv;
+    rv = evp_pkey_asn1_ctrl(pkey, ASN1_PKEY_CTRL_GET1_TLS_ENCPT, 0, ppt);
+    if (rv <= 0)
+        return 0;
+    return rv;
 }