X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fevp%2Fpmeth_fn.c;h=d86110b4e77a12c3da5380c84ebeb6b304fd5f4e;hb=84cf97af0691290d53c0a51807fa15f0843219ef;hp=0ad8098718ff617a2ae1ba280b9d710a311ff398;hpb=d87e615209f63035bee85ad17b8ec01fc425db6e;p=oweals%2Fopenssl.git

diff --git a/crypto/evp/pmeth_fn.c b/crypto/evp/pmeth_fn.c
index 0ad8098718..d86110b4e7 100644
--- a/crypto/evp/pmeth_fn.c
+++ b/crypto/evp/pmeth_fn.c
@@ -1,6 +1,7 @@
 /* pmeth_fn.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2006.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
  */
 /* ====================================================================
  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
@@ -10,7 +11,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -58,223 +59,287 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include "internal/cryptlib.h"
 #include <openssl/objects.h>
-#include "cryptlib.h"
 #include <openssl/evp.h>
-#include "evp_locl.h"
+#include "internal/evp_int.h"
+
+#define M_check_autoarg(ctx, arg, arglen, err) \
+        if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) \
+                { \
+                size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
+                if (!arg) \
+                        { \
+                        *arglen = pksize; \
+                        return 1; \
+                        } \
+                else if (*arglen < pksize) \
+                        { \
+                        EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\
+                        return 0; \
+                        } \
+                }
 
 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
-	{
-	int ret;
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->sign)
-		{
-		EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	ctx->operation = EVP_PKEY_OP_SIGN;
-	if (!ctx->pmeth->sign_init)
-		return 1;
-	ret = ctx->pmeth->sign_init(ctx);
-	if (ret <= 0)
-		ctx->operation = EVP_PKEY_OP_UNDEFINED;
-	return ret;
-	}
+{
+    int ret;
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
+        EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    ctx->operation = EVP_PKEY_OP_SIGN;
+    if (!ctx->pmeth->sign_init)
+        return 1;
+    ret = ctx->pmeth->sign_init(ctx);
+    if (ret <= 0)
+        ctx->operation = EVP_PKEY_OP_UNDEFINED;
+    return ret;
+}
 
 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
-			unsigned char *sig, int *siglen,
-			const unsigned char *tbs, int tbslen)
-	{
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->sign)
-		{
-		EVPerr(EVP_F_EVP_PKEY_SIGN,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	if (ctx->operation != EVP_PKEY_OP_SIGN)
-		{
-		EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
-		return -1;
-		}
-	return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
-	}
+                  unsigned char *sig, size_t *siglen,
+                  const unsigned char *tbs, size_t tbslen)
+{
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
+        EVPerr(EVP_F_EVP_PKEY_SIGN,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    if (ctx->operation != EVP_PKEY_OP_SIGN) {
+        EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
+        return -1;
+    }
+    M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
+        return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
+}
 
 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
-	{
-	int ret;
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->verify)
-		{
-		EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	ctx->operation = EVP_PKEY_OP_VERIFY;
-	if (!ctx->pmeth->verify_init)
-		return 1;
-	ret = ctx->pmeth->verify_init(ctx);
-	if (ret <= 0)
-		ctx->operation = EVP_PKEY_OP_UNDEFINED;
-	return ret;
-	}
+{
+    int ret;
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
+        EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    ctx->operation = EVP_PKEY_OP_VERIFY;
+    if (!ctx->pmeth->verify_init)
+        return 1;
+    ret = ctx->pmeth->verify_init(ctx);
+    if (ret <= 0)
+        ctx->operation = EVP_PKEY_OP_UNDEFINED;
+    return ret;
+}
 
 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
-			const unsigned char *sig, int siglen,
-			const unsigned char *tbs, int tbslen)
-	{
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->verify)
-		{
-		EVPerr(EVP_F_EVP_PKEY_VERIFY,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	if (ctx->operation != EVP_PKEY_OP_VERIFY)
-		{
-		EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
-		return -1;
-		}
-	return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
-	}
+                    const unsigned char *sig, size_t siglen,
+                    const unsigned char *tbs, size_t tbslen)
+{
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
+        EVPerr(EVP_F_EVP_PKEY_VERIFY,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    if (ctx->operation != EVP_PKEY_OP_VERIFY) {
+        EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
+        return -1;
+    }
+    return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
+}
 
 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
-	{
-	int ret;
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover)
-		{
-		EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
-	if (!ctx->pmeth->verify_recover_init)
-		return 1;
-	ret = ctx->pmeth->verify_recover_init(ctx);
-	if (ret <= 0)
-		ctx->operation = EVP_PKEY_OP_UNDEFINED;
-	return ret;
-	}
+{
+    int ret;
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+        EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
+    if (!ctx->pmeth->verify_recover_init)
+        return 1;
+    ret = ctx->pmeth->verify_recover_init(ctx);
+    if (ret <= 0)
+        ctx->operation = EVP_PKEY_OP_UNDEFINED;
+    return ret;
+}
 
 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
-			unsigned char *rout, int *routlen,
-			const unsigned char *sig, int siglen)
-	{
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover)
-		{
-		EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER)
-		{
-		EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
-		return -1;
-		}
-	return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
-	}
+                            unsigned char *rout, size_t *routlen,
+                            const unsigned char *sig, size_t siglen)
+{
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+        EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
+        EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
+        return -1;
+    }
+    M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
+        return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
+}
 
 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
-	{
-	int ret;
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt)
-		{
-		EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	ctx->operation = EVP_PKEY_OP_ENCRYPT;
-	if (!ctx->pmeth->encrypt_init)
-		return 1;
-	ret = ctx->pmeth->encrypt_init(ctx);
-	if (ret <= 0)
-		ctx->operation = EVP_PKEY_OP_UNDEFINED;
-	return ret;
-	}
+{
+    int ret;
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+        EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    ctx->operation = EVP_PKEY_OP_ENCRYPT;
+    if (!ctx->pmeth->encrypt_init)
+        return 1;
+    ret = ctx->pmeth->encrypt_init(ctx);
+    if (ret <= 0)
+        ctx->operation = EVP_PKEY_OP_UNDEFINED;
+    return ret;
+}
 
 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
-			unsigned char *out, int *outlen,
-			const unsigned char *in, int inlen)
-	{
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt)
-		{
-		EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	if (ctx->operation != EVP_PKEY_OP_ENCRYPT)
-		{
-		EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
-		return -1;
-		}
-	return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
-	}
+                     unsigned char *out, size_t *outlen,
+                     const unsigned char *in, size_t inlen)
+{
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+        EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
+        EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
+        return -1;
+    }
+    M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
+        return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
+}
 
 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
-	{
-	int ret;
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt)
-		{
-		EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	ctx->operation = EVP_PKEY_OP_DECRYPT;
-	if (!ctx->pmeth->decrypt_init)
-		return 1;
-	ret = ctx->pmeth->decrypt_init(ctx);
-	if (ret <= 0)
-		ctx->operation = EVP_PKEY_OP_UNDEFINED;
-	return ret;
-	}
+{
+    int ret;
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+        EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    ctx->operation = EVP_PKEY_OP_DECRYPT;
+    if (!ctx->pmeth->decrypt_init)
+        return 1;
+    ret = ctx->pmeth->decrypt_init(ctx);
+    if (ret <= 0)
+        ctx->operation = EVP_PKEY_OP_UNDEFINED;
+    return ret;
+}
 
 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
-			unsigned char *out, int *outlen,
-			const unsigned char *in, int inlen)
-	{
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt)
-		{
-		EVPerr(EVP_F_EVP_PKEY_DECRYPT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	if (ctx->operation != EVP_PKEY_OP_DECRYPT)
-		{
-		EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
-		return -1;
-		}
-	return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
-	}
-
+                     unsigned char *out, size_t *outlen,
+                     const unsigned char *in, size_t inlen)
+{
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+        EVPerr(EVP_F_EVP_PKEY_DECRYPT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
+        EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
+        return -1;
+    }
+    M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
+        return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
+}
 
 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
-	{
-	int ret;
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->derive)
-		{
-		EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	ctx->operation = EVP_PKEY_OP_DERIVE;
-	if (!ctx->pmeth->derive_init)
-		return 1;
-	ret = ctx->pmeth->derive_init(ctx);
-	if (ret <= 0)
-		ctx->operation = EVP_PKEY_OP_UNDEFINED;
-	return ret;
-	}
+{
+    int ret;
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    ctx->operation = EVP_PKEY_OP_DERIVE;
+    if (!ctx->pmeth->derive_init)
+        return 1;
+    ret = ctx->pmeth->derive_init(ctx);
+    if (ret <= 0)
+        ctx->operation = EVP_PKEY_OP_UNDEFINED;
+    return ret;
+}
+
+int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer)
+{
+    int ret;
+    if (!ctx || !ctx->pmeth
+        || !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt)
+        || !ctx->pmeth->ctrl) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    if (ctx->operation != EVP_PKEY_OP_DERIVE
+        && ctx->operation != EVP_PKEY_OP_ENCRYPT
+        && ctx->operation != EVP_PKEY_OP_DECRYPT) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
+               EVP_R_OPERATON_NOT_INITIALIZED);
+        return -1;
+    }
+
+    ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
+
+    if (ret <= 0)
+        return ret;
+
+    if (ret == 2)
+        return 1;
+
+    if (!ctx->pkey) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
+        return -1;
+    }
+
+    if (ctx->pkey->type != peer->type) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES);
+        return -1;
+    }
+
+    /*
+     * ran@cryptocom.ru: For clarity.  The error is if parameters in peer are
+     * present (!missing) but don't match.  EVP_PKEY_cmp_parameters may return
+     * 1 (match), 0 (don't match) and -2 (comparison is not defined).  -1
+     * (different key types) is impossible here because it is checked earlier.
+     * -2 is OK for us here, as well as 1, so we can check for 0 only.
+     */
+    if (!EVP_PKEY_missing_parameters(peer) &&
+        !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
+        return -1;
+    }
+
+    EVP_PKEY_free(ctx->peerkey);
+    ctx->peerkey = peer;
+
+    ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
+
+    if (ret <= 0) {
+        ctx->peerkey = NULL;
+        return ret;
+    }
 
-int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, int *pkeylen)
-	{
-	if (!ctx || !ctx->pmeth || !ctx->pmeth->derive)
-		{
-		EVPerr(EVP_F_EVP_PKEY_DERIVE,
-			EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
-		return -2;
-		}
-	if (ctx->operation != EVP_PKEY_OP_DERIVE)
-		{
-		EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
-		return -1;
-		}
-	return ctx->pmeth->derive(ctx, key, pkeylen);
-	}
+    CRYPTO_add(&peer->references, 1, CRYPTO_LOCK_EVP_PKEY);
+    return 1;
+}
 
+int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen)
+{
+    if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE,
+               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+        return -2;
+    }
+    if (ctx->operation != EVP_PKEY_OP_DERIVE) {
+        EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
+        return -1;
+    }
+    M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
+        return ctx->pmeth->derive(ctx, key, pkeylen);
+}