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Server with ECDHE key and certificate do not work

I am using the following server.c source, I generated

sinful-host-cert.pem
sinful-host.key

as described here: CA elliptic curve guide

When starting the program, get the following errors:

140722397161136: error: 10071065: elliptic curve procedures: func (113): reason (101): ec_lib.c: 995: 140722397161136: error: 0B080075: x509 routine procedures: func (128): reason (117): x509_cmp.c: 346:

I compiled using:

gcc server.c -ldl -lcrypto -lssl -o Server

The error on this line, I think, is

if (SSL_CTX_use_PrivateKey_file(ctx, KeyFile, SSL_FILETYPE_PEM) <= 0)

server.c

#include <errno.h>
#include <unistd.h>
#include <malloc.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <resolv.h>
#include "openssl/ssl.h"
#include "openssl/err.h"

#define FAIL    -1

int OpenListener(int port)
{   int sd;
    struct sockaddr_in addr;


    sd = socket(PF_INET, SOCK_STREAM, 0);
    bzero(&addr, sizeof(addr));

    inet_aton("10.8.0.26", &addr.sin_addr);

    addr.sin_family = AF_INET;
    addr.sin_port = htons(port);
    //addr.sin_addr.s_addr = INADDR_ANY;

    if ( bind(sd, (struct sockaddr*)&addr, sizeof(addr)) != 0 )
    {
        perror("can't bind port");
        abort();
    }
    if ( listen(sd, 10) != 0 )
    {
        perror("Can't configure listening port");
        abort();
    }
    return sd;
}

SSL_CTX* InitServerCTX(void)
{   const SSL_METHOD *method;
    SSL_CTX *ctx;

    OpenSSL_add_all_algorithms();  /* load & register all cryptos, etc. */
    SSL_load_error_strings();   /* load all error messages */

    //method = SSLv23_server_method();
    method = TLSv1_2_server_method();  /* create new server-method instance */
    ctx = SSL_CTX_new(method);   /* create new context from method */
    if ( ctx == NULL )
    {
        ERR_print_errors_fp(stderr);
        abort();
    }
    return ctx;
}

void LoadCertificates(SSL_CTX* ctx, char* CertFile, char* KeyFile)
{
    //New lines 
    if (SSL_CTX_set_cipher_list(ctx, "ECDHE-ECDSA-AES128-GCM-SHA256") != 1)
         ERR_print_errors_fp(stderr);

    if (SSL_CTX_load_verify_locations(ctx, CertFile, KeyFile) != 1)
        ERR_print_errors_fp(stderr);

    if (SSL_CTX_set_default_verify_paths(ctx) != 1)
        ERR_print_errors_fp(stderr);
    //End new lines

    /* set the local certificate from CertFile */
    if (SSL_CTX_use_certificate_file(ctx, CertFile, SSL_FILETYPE_PEM) <= 0)
    {
        ERR_print_errors_fp(stderr);
        abort();
    }

    printf("FFFF\n");
    /* set the private key from KeyFile (may be the same as CertFile) */
    if (SSL_CTX_use_PrivateKey_file(ctx, KeyFile, SSL_FILETYPE_PEM) <= 0)
    {
        ERR_print_errors_fp(stderr);
        abort();
    }
    printf("GGGG\n");
    /* verify private key */
    if (!SSL_CTX_check_private_key(ctx))
    {
        fprintf(stderr, "Private key does not match the public certificate\n");
        abort();
    }

    //New lines - Force the client-side have a certificate
    //SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
    //SSL_CTX_set_verify_depth(ctx, 4);
    //End new lines
}

void ShowCerts(SSL* ssl)
{   X509 *cert;
    char *line;

    cert = SSL_get_peer_certificate(ssl); /* Get certificates (if available) */
    if ( cert != NULL )
    {
        printf("Server certificates:\n");
        line = X509_NAME_oneline(X509_get_subject_name(cert), 0, 0);
        printf("Subject: %s\n", line);
        free(line);
        line = X509_NAME_oneline(X509_get_issuer_name(cert), 0, 0);
        printf("Issuer: %s\n", line);
        free(line);
        X509_free(cert);
    }
    else
        printf("No certificates.\n");
}

void Servlet(SSL* ssl) /* Serve the connection -- threadable */
{   char buf[1024];
    char reply[1024];
    int sd, bytes, err;
    const char* HTMLecho="<html><body><pre>%s</pre></body></html>\n\n";

    printf("huhupre\n");

    err = SSL_accept(ssl);

    if ( err <= 0 ) {    /* do SSL-protocol accept */
        printf("%d\n",err);
        ERR_print_errors_fp(stderr);
    }
    else
    {
        printf("XXXXXX\n");
        //SSL_write(ssl, "huhu\n\r", 8);
        ShowCerts(ssl);        /* get any certificates */
        bytes = SSL_read(ssl, buf, sizeof(buf)); /* get request */
        if ( bytes > 0 )
        {
            buf[bytes] = 0;
            printf("Client msg: \"%s\"\n", buf);
            sprintf(reply, HTMLecho, buf);   /* construct reply */
            SSL_write(ssl, reply, strlen(reply)); /* send reply */
        }
        else
            ERR_print_errors_fp(stderr);
    }
    sd = SSL_get_fd(ssl);       /* get socket connection */
    SSL_free(ssl);         /* release SSL state */
    close(sd);          /* close connection */
}

int main()
{   SSL_CTX *ctx;
    int server;
    char portnum[]="5000";

        char CertFile[] = "sinful-host-cert.pem";
        char KeyFile[] = "sinful-host.key";

    SSL_library_init();

    ctx = InitServerCTX();        /* initialize SSL */
    LoadCertificates(ctx, CertFile, KeyFile); /* load certs */
    server = OpenListener(atoi(portnum));    /* create server socket */

    printf("%d while\n", server);
    while (1)
    {   struct sockaddr_in addr;
        socklen_t len = sizeof(addr);
        SSL *ssl;

        int client = accept(server, (struct sockaddr*)&addr, &len);  /* accept connection as usual */
        printf("Connection: %s:%d\n",inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
        ssl = SSL_new(ctx);              /* get new SSL state with context */
        if (ssl == NULL) {

            ERR_print_errors_fp(stderr);
            return 0;

        }
        SSL_set_fd(ssl, client);      /* set connection socket to SSL state */
        Servlet(ssl);         /* service connection */
    }
    close(server);          /* close server socket */
    SSL_CTX_free(ctx);         /* release context */
}
+4
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1 answer

as described here: CA Elliptic Curve Guide ...

. - . , - ...

:

openssl ecparam -list-curves

-list_curves, -list-curves.

:

openssl ecparam -out sinful.key -name sect283k1 -genkey

:

openssl ecparam -param_enc named_curve -out sinful.key -name sect283k1 -genkey

, , , . - OID secp256k1, , p, a, b, G ..

" " OpenSSL , . , :

  • : 139925962778272:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1256:SSL alert number 40
  • : 139925962778272:error:1409E0E5:SSL routines:SSL3_WRITE_BYTES:ssl handshake failure:s3_pkt.c:596
  • : 140339533272744:error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher:s3_srvr.c:1353

, secp256k1. secp521r1.

, / -*form openssl ecparam openssl req .

SSL_CTX* InitServerCTX(void) { ... }

. ECDH. SSL_CTX_set_tmp_ecdh (OpenSSL 1.0.1 ) SSL_CTX_set_ecdh_auto (OpenSSL 1.0.2 )?

, , , . . " " EDH-RSA-DES-CBC3-SHA.

, ,

if (SSL_CTX_use_PrivateKey_file(ctx, KeyFile, SSL_FILETYPE_PEM) <= 0)

, , . :

openssl req -x509 -new -key sinful.key -out sinful-ca.pem -outform PEM -days 3650

, ( -keyform)

openssl req -x509 -new -key sinful.key -keyform PEM -out sinful-ca.pem -outform PEM -days 3650


if (SSL_CTX_use_PrivateKey_file(ctx, KeyFile, SSL_FILETYPE_ASN1) <= 0)

, *form , -keyform, -certform, -inform, -outform .. OpenSSL ( PEM ).

, ,

if (SSL_CTX_use_PrivateKey_file(ctx, KeyFile, SSL_FILETYPE_PEM) <= 0)

, .

, , ; . - ACL .

, . . .

... , OpenSSL .

:

 140722397161136:error:10071065:elliptic curve routines:func(113):reason(101):ec_lib.c:995
 140722397161136:error:0B080075:x509 certificate routines:func(128):reason(117):x509_cmp.c:346

-, 0x10071065:

$ /usr/local/ssl/macosx-x64/bin/openssl errstr 0x10071065
error:10071065:elliptic curve routines:EC_POINT_cmp:incompatible objects

0x10071065 , . secp256k1, secp521r1.

-, 0x0B080075:

$ /usr/local/ssl/macosx-x64/bin/openssl errstr 0x0B080075
error:0B080075:x509 certificate routines:X509_check_private_key:unknown key type

, . . (1) , (2) sect283k1 (3) (. ). , , .

, OpenSSL ...

, OpenSSL 1.0.0 . 0,9,8 , 1.0.0. OpenSSL 1.0.2.

 OpenSSL_add_all_algorithms();  /* load & register all cryptos, etc. */
 SSL_load_error_strings();   /* load all error messages */

. OpenSSL.

 if (SSL_CTX_set_cipher_list(ctx, "ECDHE-ECDSA-AES128-GCM-SHA256")

OS X iOS - SecureTransport. Apple .

Apple hardwarez, non-ECDHE-ECDSA . SSL_OP_SAFARI_ECDHE_ECDSA_BUG.

, Apple , . ECDHE-ECDSA; , CVE-2015-1130 ( ).

ECDH OpenSSL 1.0.1 . OpenSSL 1.0.2 SSL_CTX_set_ecdh_auto. ++, C-. SL_CTX_set_tmp_ecdh_callback 1.0.1 OpenSSL.

. SSL_get_certificate ( SSL_get_peer_certificate), , , secp256k1 secp571k1. ( , secp256, EcdhCallback secp256 ).

SSL_get_certificate . <openssl src>/apps/s_cb.c. , "" OpenSSL .

using SSL_ptr = std::shared_ptr<SSL>;
using SSL_CTX_ptr = std::shared_ptr<SSL_CTX>;

using EC_KEY_ptr = std::unique_ptr<EC_KEY, decltype(&::EC_KEY_free)>;
using EC_GROUP_ptr = std::unique_ptr<EC_GROUP, decltype(&::EC_GROUP_free)>;
using EC_POINT_ptr = std::unique_ptr<EC_POINT, decltype(&::EC_POINT_free)>;
using EVP_PKEY_ptr = std::unique_ptr<EVP_PKEY, decltype(&::EVP_PKEY_free)>;
using BIO_MEM_ptr = std::unique_ptr<BIO, decltype(&::BIO_free)>;
using BIO_FILE_ptr = std::unique_ptr<BIO, decltype(&::BIO_free)>;
...

SSL_CTX* CreateServerContext(const string & domain)
{
    const SSL_METHOD* method = SSLv23_server_method();
    ASSERT(method != NULL);

    SSL_CTX_ptr t(SSL_CTX_new(method), ::SSL_CTX_free);
    ASSERT(t.get() != NULL);

    long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3;
            flags |= SSL_OP_NO_COMPRESSION;
            flags |= SSL_OP_SAFARI_ECDHE_ECDSA_BUG;
            flags |= SSL_OP_CIPHER_SERVER_PREFERENCE;

    SSL_CTX_set_options(t.get(), flags);

    string ciphers = "HIGH:!aNULL:!RC4:!MD5";
    rc = SSL_CTX_set_cipher_list(t.get(), ciphers.c_str());    
    ...

    LogDebug("GetServerContext: setting ECDH callback");
    SSL_CTX_set_tmp_ecdh_callback(t.get(), EcdhCallback);
    ...

    return t.release();
}

EC_KEY* EcdhCallback(SSL *ssl, int is_export, int keylength)
{
    UNUSED(ssl);
    UNUSED(is_export);
    UNUSED(keylength);

    /* This callback is OK, but OpenSSL calls it in a broken fashion. */
    /* With 1.0.1e and 1.0.1f, the value is 1024-bits. That is more   */
    /* appropriate for RSA.... We'll try and rewrite it here.         */
    if (keylength >= 1024)
    {
        keylength = 256;
        LogRelevant("EcdhCallback: field size is wrong, using 256-bit group");
    }

#if defined(ALLOW_ECDH_192_PARAMS)
    if (keylength <= 192 + 4)
        return ECDH192();
#endif

    if (keylength <= 224 + 4)
        return ECDH224();
    else if (keylength <= 256 + 4)
        return ECDH256();
    else if (keylength <= 384 + 4)
        return ECDH384();
    else if (keylength <= 521 + 4)
        return ECDH521();

    return ECDH521();
}

#if defined(ALLOW_ECDH_192_PARAMS)
static EC_KEY* ECDH192()
{
    static EC_KEY_ptr key(NULL, NULL);
    static once_flag flag;

    call_once(flag, []()
    {
        key = EC_KEY_ptr(InitEcdhkey(192), ::EC_KEY_free);
        ASSERT(key.get());

        if(!key.get())
            LogError("ECDH192: InitEcdhkey failed");
    });

    return key.get();
}
#endif

static EC_KEY* ECDH224()
{
    static EC_KEY_ptr key(NULL, NULL);
    static once_flag flag;

    call_once(flag, []()
    {
        key = EC_KEY_ptr(InitEcdhkey(224), ::EC_KEY_free);
        ASSERT(key.get());

        if(!key.get())
            LogError("ECDH224: InitEcdhkey failed");
    });

    return key.get();
}

static EC_KEY* ECDH256()
{
    static EC_KEY_ptr key(NULL, NULL);
    static once_flag flag;

    call_once(flag, []()
    {
        key = EC_KEY_ptr(InitEcdhkey(256), ::EC_KEY_free);
        ASSERT(key.get());

        if(!key.get())
            LogError("ECDH256: InitEcdhkey failed");
    });

    return key.get();
}

static EC_KEY* ECDH384()
{
    static EC_KEY_ptr key(NULL, NULL);
    static once_flag flag;

    call_once(flag, []()
    {
        key = EC_KEY_ptr(InitEcdhkey(384), ::EC_KEY_free);
        ASSERT(key.get());

        if(!key.get())
            LogError("ECDH384: InitEcdhkey failed");
    });

    return key.get();
}

static EC_KEY* ECDH521()
{
    static EC_KEY_ptr key(NULL, NULL);
    static once_flag flag;

    call_once(flag, []()
    {
        key = EC_KEY_ptr(InitEcdhkey(521), ::EC_KEY_free);
        ASSERT(key.get());

        if(!key.get())
            LogError("ECDH521: InitEcdhkey failed");
    });

    return key.get();
}

static EC_KEY* InitEcdhkey(int bits)
{
    if (bits <= 160 + 4)
        bits = 160;
    else if (bits <= 192 + 4)
        bits = 192;
    else if (bits <= 224 + 4)
        bits = 224;
    else if (bits <= 256 + 4)
        bits = 256;
    else if (bits <= 384 + 4)
        bits = 384;
    else if (bits <= 521 + 4)
        bits = 521;
    else
        bits = 521;

    EC_KEY* key = EC_KEY_new_by_curve_name(CurveToNidByBits(bits));
    unsigned long err = ERR_get_error();

    ASSERT(key != NULL);
    if (key == NULL)
    {
        ostringstream oss;
        oss << "InitEcdhkey: EC_KEY_new_by_curve_name failed for ";
        oss << bits << "-bit key, error " << err << ", 0x" << err;
        LogError(oss);
    }

    return key;
}
+11

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