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author | William Joye <wjoye@cfa.harvard.edu> | 2017-05-02 16:40:01 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2017-05-02 16:40:01 (GMT) |
commit | 0a2b8b8e0bc2e91a9f10659b30e2e4f5b79ce692 (patch) | |
tree | 3d0871d05cfd11f60b86829d2d93704034dad24e /openssl/ssl/tls_srp.c | |
parent | e9abe0dba896d2b0fc22301588336e89ff246ba7 (diff) | |
download | blt-0a2b8b8e0bc2e91a9f10659b30e2e4f5b79ce692.zip blt-0a2b8b8e0bc2e91a9f10659b30e2e4f5b79ce692.tar.gz blt-0a2b8b8e0bc2e91a9f10659b30e2e4f5b79ce692.tar.bz2 |
reinstall
Diffstat (limited to 'openssl/ssl/tls_srp.c')
-rw-r--r-- | openssl/ssl/tls_srp.c | 542 |
1 files changed, 0 insertions, 542 deletions
diff --git a/openssl/ssl/tls_srp.c b/openssl/ssl/tls_srp.c deleted file mode 100644 index bb719ba..0000000 --- a/openssl/ssl/tls_srp.c +++ /dev/null @@ -1,542 +0,0 @@ -/* ssl/tls_srp.c */ -/* - * Written by Christophe Renou (christophe.renou@edelweb.fr) with the - * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the - * EdelKey project and contributed to the OpenSSL project 2004. - */ -/* ==================================================================== - * Copyright (c) 2004-2011 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * 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 - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ -#include "ssl_locl.h" -#ifndef OPENSSL_NO_SRP - -# include <openssl/rand.h> -# include <openssl/srp.h> -# include <openssl/err.h> - -int SSL_CTX_SRP_CTX_free(struct ssl_ctx_st *ctx) -{ - if (ctx == NULL) - return 0; - OPENSSL_free(ctx->srp_ctx.login); - BN_free(ctx->srp_ctx.N); - BN_free(ctx->srp_ctx.g); - BN_free(ctx->srp_ctx.s); - BN_free(ctx->srp_ctx.B); - BN_free(ctx->srp_ctx.A); - BN_free(ctx->srp_ctx.a); - BN_free(ctx->srp_ctx.b); - BN_free(ctx->srp_ctx.v); - ctx->srp_ctx.TLS_ext_srp_username_callback = NULL; - ctx->srp_ctx.SRP_cb_arg = NULL; - ctx->srp_ctx.SRP_verify_param_callback = NULL; - ctx->srp_ctx.SRP_give_srp_client_pwd_callback = NULL; - ctx->srp_ctx.N = NULL; - ctx->srp_ctx.g = NULL; - ctx->srp_ctx.s = NULL; - ctx->srp_ctx.B = NULL; - ctx->srp_ctx.A = NULL; - ctx->srp_ctx.a = NULL; - ctx->srp_ctx.b = NULL; - ctx->srp_ctx.v = NULL; - ctx->srp_ctx.login = NULL; - ctx->srp_ctx.info = NULL; - ctx->srp_ctx.strength = SRP_MINIMAL_N; - ctx->srp_ctx.srp_Mask = 0; - return (1); -} - -int SSL_SRP_CTX_free(struct ssl_st *s) -{ - if (s == NULL) - return 0; - OPENSSL_free(s->srp_ctx.login); - BN_free(s->srp_ctx.N); - BN_free(s->srp_ctx.g); - BN_free(s->srp_ctx.s); - BN_free(s->srp_ctx.B); - BN_free(s->srp_ctx.A); - BN_free(s->srp_ctx.a); - BN_free(s->srp_ctx.b); - BN_free(s->srp_ctx.v); - s->srp_ctx.TLS_ext_srp_username_callback = NULL; - s->srp_ctx.SRP_cb_arg = NULL; - s->srp_ctx.SRP_verify_param_callback = NULL; - s->srp_ctx.SRP_give_srp_client_pwd_callback = NULL; - s->srp_ctx.N = NULL; - s->srp_ctx.g = NULL; - s->srp_ctx.s = NULL; - s->srp_ctx.B = NULL; - s->srp_ctx.A = NULL; - s->srp_ctx.a = NULL; - s->srp_ctx.b = NULL; - s->srp_ctx.v = NULL; - s->srp_ctx.login = NULL; - s->srp_ctx.info = NULL; - s->srp_ctx.strength = SRP_MINIMAL_N; - s->srp_ctx.srp_Mask = 0; - return (1); -} - -int SSL_SRP_CTX_init(struct ssl_st *s) -{ - SSL_CTX *ctx; - - if ((s == NULL) || ((ctx = s->ctx) == NULL)) - return 0; - s->srp_ctx.SRP_cb_arg = ctx->srp_ctx.SRP_cb_arg; - /* set client Hello login callback */ - s->srp_ctx.TLS_ext_srp_username_callback = - ctx->srp_ctx.TLS_ext_srp_username_callback; - /* set SRP N/g param callback for verification */ - s->srp_ctx.SRP_verify_param_callback = - ctx->srp_ctx.SRP_verify_param_callback; - /* set SRP client passwd callback */ - s->srp_ctx.SRP_give_srp_client_pwd_callback = - ctx->srp_ctx.SRP_give_srp_client_pwd_callback; - - s->srp_ctx.N = NULL; - s->srp_ctx.g = NULL; - s->srp_ctx.s = NULL; - s->srp_ctx.B = NULL; - s->srp_ctx.A = NULL; - s->srp_ctx.a = NULL; - s->srp_ctx.b = NULL; - s->srp_ctx.v = NULL; - s->srp_ctx.login = NULL; - s->srp_ctx.info = ctx->srp_ctx.info; - s->srp_ctx.strength = ctx->srp_ctx.strength; - - if (((ctx->srp_ctx.N != NULL) && - ((s->srp_ctx.N = BN_dup(ctx->srp_ctx.N)) == NULL)) || - ((ctx->srp_ctx.g != NULL) && - ((s->srp_ctx.g = BN_dup(ctx->srp_ctx.g)) == NULL)) || - ((ctx->srp_ctx.s != NULL) && - ((s->srp_ctx.s = BN_dup(ctx->srp_ctx.s)) == NULL)) || - ((ctx->srp_ctx.B != NULL) && - ((s->srp_ctx.B = BN_dup(ctx->srp_ctx.B)) == NULL)) || - ((ctx->srp_ctx.A != NULL) && - ((s->srp_ctx.A = BN_dup(ctx->srp_ctx.A)) == NULL)) || - ((ctx->srp_ctx.a != NULL) && - ((s->srp_ctx.a = BN_dup(ctx->srp_ctx.a)) == NULL)) || - ((ctx->srp_ctx.v != NULL) && - ((s->srp_ctx.v = BN_dup(ctx->srp_ctx.v)) == NULL)) || - ((ctx->srp_ctx.b != NULL) && - ((s->srp_ctx.b = BN_dup(ctx->srp_ctx.b)) == NULL))) { - SSLerr(SSL_F_SSL_SRP_CTX_INIT, ERR_R_BN_LIB); - goto err; - } - if ((ctx->srp_ctx.login != NULL) && - ((s->srp_ctx.login = BUF_strdup(ctx->srp_ctx.login)) == NULL)) { - SSLerr(SSL_F_SSL_SRP_CTX_INIT, ERR_R_INTERNAL_ERROR); - goto err; - } - s->srp_ctx.srp_Mask = ctx->srp_ctx.srp_Mask; - - return (1); - err: - OPENSSL_free(s->srp_ctx.login); - BN_free(s->srp_ctx.N); - BN_free(s->srp_ctx.g); - BN_free(s->srp_ctx.s); - BN_free(s->srp_ctx.B); - BN_free(s->srp_ctx.A); - BN_free(s->srp_ctx.a); - BN_free(s->srp_ctx.b); - BN_free(s->srp_ctx.v); - return (0); -} - -int SSL_CTX_SRP_CTX_init(struct ssl_ctx_st *ctx) -{ - if (ctx == NULL) - return 0; - - ctx->srp_ctx.SRP_cb_arg = NULL; - /* set client Hello login callback */ - ctx->srp_ctx.TLS_ext_srp_username_callback = NULL; - /* set SRP N/g param callback for verification */ - ctx->srp_ctx.SRP_verify_param_callback = NULL; - /* set SRP client passwd callback */ - ctx->srp_ctx.SRP_give_srp_client_pwd_callback = NULL; - - ctx->srp_ctx.N = NULL; - ctx->srp_ctx.g = NULL; - ctx->srp_ctx.s = NULL; - ctx->srp_ctx.B = NULL; - ctx->srp_ctx.A = NULL; - ctx->srp_ctx.a = NULL; - ctx->srp_ctx.b = NULL; - ctx->srp_ctx.v = NULL; - ctx->srp_ctx.login = NULL; - ctx->srp_ctx.srp_Mask = 0; - ctx->srp_ctx.info = NULL; - ctx->srp_ctx.strength = SRP_MINIMAL_N; - - return (1); -} - -/* server side */ -int SSL_srp_server_param_with_username(SSL *s, int *ad) -{ - unsigned char b[SSL_MAX_MASTER_KEY_LENGTH]; - int al; - - *ad = SSL_AD_UNKNOWN_PSK_IDENTITY; - if ((s->srp_ctx.TLS_ext_srp_username_callback != NULL) && - ((al = - s->srp_ctx.TLS_ext_srp_username_callback(s, ad, - s->srp_ctx.SRP_cb_arg)) != - SSL_ERROR_NONE)) - return al; - - *ad = SSL_AD_INTERNAL_ERROR; - if ((s->srp_ctx.N == NULL) || - (s->srp_ctx.g == NULL) || - (s->srp_ctx.s == NULL) || (s->srp_ctx.v == NULL)) - return SSL3_AL_FATAL; - - if (RAND_bytes(b, sizeof(b)) <= 0) - return SSL3_AL_FATAL; - s->srp_ctx.b = BN_bin2bn(b, sizeof(b), NULL); - OPENSSL_cleanse(b, sizeof(b)); - - /* Calculate: B = (kv + g^b) % N */ - - return ((s->srp_ctx.B = - SRP_Calc_B(s->srp_ctx.b, s->srp_ctx.N, s->srp_ctx.g, - s->srp_ctx.v)) != - NULL) ? SSL_ERROR_NONE : SSL3_AL_FATAL; -} - -/* - * If the server just has the raw password, make up a verifier entry on the - * fly - */ -int SSL_set_srp_server_param_pw(SSL *s, const char *user, const char *pass, - const char *grp) -{ - SRP_gN *GN = SRP_get_default_gN(grp); - if (GN == NULL) - return -1; - s->srp_ctx.N = BN_dup(GN->N); - s->srp_ctx.g = BN_dup(GN->g); - if (s->srp_ctx.v != NULL) { - BN_clear_free(s->srp_ctx.v); - s->srp_ctx.v = NULL; - } - if (s->srp_ctx.s != NULL) { - BN_clear_free(s->srp_ctx.s); - s->srp_ctx.s = NULL; - } - if (!SRP_create_verifier_BN - (user, pass, &s->srp_ctx.s, &s->srp_ctx.v, GN->N, GN->g)) - return -1; - - return 1; -} - -int SSL_set_srp_server_param(SSL *s, const BIGNUM *N, const BIGNUM *g, - BIGNUM *sa, BIGNUM *v, char *info) -{ - if (N != NULL) { - if (s->srp_ctx.N != NULL) { - if (!BN_copy(s->srp_ctx.N, N)) { - BN_free(s->srp_ctx.N); - s->srp_ctx.N = NULL; - } - } else - s->srp_ctx.N = BN_dup(N); - } - if (g != NULL) { - if (s->srp_ctx.g != NULL) { - if (!BN_copy(s->srp_ctx.g, g)) { - BN_free(s->srp_ctx.g); - s->srp_ctx.g = NULL; - } - } else - s->srp_ctx.g = BN_dup(g); - } - if (sa != NULL) { - if (s->srp_ctx.s != NULL) { - if (!BN_copy(s->srp_ctx.s, sa)) { - BN_free(s->srp_ctx.s); - s->srp_ctx.s = NULL; - } - } else - s->srp_ctx.s = BN_dup(sa); - } - if (v != NULL) { - if (s->srp_ctx.v != NULL) { - if (!BN_copy(s->srp_ctx.v, v)) { - BN_free(s->srp_ctx.v); - s->srp_ctx.v = NULL; - } - } else - s->srp_ctx.v = BN_dup(v); - } - s->srp_ctx.info = info; - - if (!(s->srp_ctx.N) || - !(s->srp_ctx.g) || !(s->srp_ctx.s) || !(s->srp_ctx.v)) - return -1; - - return 1; -} - -int SRP_generate_server_master_secret(SSL *s, unsigned char *master_key) -{ - BIGNUM *K = NULL, *u = NULL; - int ret = -1, tmp_len; - unsigned char *tmp = NULL; - - if (!SRP_Verify_A_mod_N(s->srp_ctx.A, s->srp_ctx.N)) - goto err; - if (!(u = SRP_Calc_u(s->srp_ctx.A, s->srp_ctx.B, s->srp_ctx.N))) - goto err; - if (! - (K = - SRP_Calc_server_key(s->srp_ctx.A, s->srp_ctx.v, u, s->srp_ctx.b, - s->srp_ctx.N))) - goto err; - - tmp_len = BN_num_bytes(K); - if ((tmp = OPENSSL_malloc(tmp_len)) == NULL) - goto err; - BN_bn2bin(K, tmp); - ret = - s->method->ssl3_enc->generate_master_secret(s, master_key, tmp, - tmp_len); - err: - if (tmp) { - OPENSSL_cleanse(tmp, tmp_len); - OPENSSL_free(tmp); - } - BN_clear_free(K); - BN_clear_free(u); - return ret; -} - -/* client side */ -int SRP_generate_client_master_secret(SSL *s, unsigned char *master_key) -{ - BIGNUM *x = NULL, *u = NULL, *K = NULL; - int ret = -1, tmp_len; - char *passwd = NULL; - unsigned char *tmp = NULL; - - /* - * Checks if b % n == 0 - */ - if (SRP_Verify_B_mod_N(s->srp_ctx.B, s->srp_ctx.N) == 0) - goto err; - if (!(u = SRP_Calc_u(s->srp_ctx.A, s->srp_ctx.B, s->srp_ctx.N))) - goto err; - if (s->srp_ctx.SRP_give_srp_client_pwd_callback == NULL) - goto err; - if (! - (passwd = - s->srp_ctx.SRP_give_srp_client_pwd_callback(s, - s->srp_ctx.SRP_cb_arg))) - goto err; - if (!(x = SRP_Calc_x(s->srp_ctx.s, s->srp_ctx.login, passwd))) - goto err; - if (! - (K = - SRP_Calc_client_key(s->srp_ctx.N, s->srp_ctx.B, s->srp_ctx.g, x, - s->srp_ctx.a, u))) - goto err; - - tmp_len = BN_num_bytes(K); - if ((tmp = OPENSSL_malloc(tmp_len)) == NULL) - goto err; - BN_bn2bin(K, tmp); - ret = - s->method->ssl3_enc->generate_master_secret(s, master_key, tmp, - tmp_len); - err: - if (tmp) { - OPENSSL_cleanse(tmp, tmp_len); - OPENSSL_free(tmp); - } - BN_clear_free(K); - BN_clear_free(x); - if (passwd) { - OPENSSL_cleanse(passwd, strlen(passwd)); - OPENSSL_free(passwd); - } - BN_clear_free(u); - return ret; -} - -int srp_verify_server_param(SSL *s, int *al) -{ - SRP_CTX *srp = &s->srp_ctx; - /* - * Sanity check parameters: we can quickly check B % N == 0 by checking B - * != 0 since B < N - */ - if (BN_ucmp(srp->g, srp->N) >= 0 || BN_ucmp(srp->B, srp->N) >= 0 - || BN_is_zero(srp->B)) { - *al = SSL3_AD_ILLEGAL_PARAMETER; - return 0; - } - - if (BN_num_bits(srp->N) < srp->strength) { - *al = TLS1_AD_INSUFFICIENT_SECURITY; - return 0; - } - - if (srp->SRP_verify_param_callback) { - if (srp->SRP_verify_param_callback(s, srp->SRP_cb_arg) <= 0) { - *al = TLS1_AD_INSUFFICIENT_SECURITY; - return 0; - } - } else if (!SRP_check_known_gN_param(srp->g, srp->N)) { - *al = TLS1_AD_INSUFFICIENT_SECURITY; - return 0; - } - - return 1; -} - -int SRP_Calc_A_param(SSL *s) -{ - unsigned char rnd[SSL_MAX_MASTER_KEY_LENGTH]; - - if (RAND_bytes(rnd, sizeof(rnd)) <= 0) - return -1; - s->srp_ctx.a = BN_bin2bn(rnd, sizeof(rnd), s->srp_ctx.a); - OPENSSL_cleanse(rnd, sizeof(rnd)); - - if (! - (s->srp_ctx.A = SRP_Calc_A(s->srp_ctx.a, s->srp_ctx.N, s->srp_ctx.g))) - return -1; - - return 1; -} - -BIGNUM *SSL_get_srp_g(SSL *s) -{ - if (s->srp_ctx.g != NULL) - return s->srp_ctx.g; - return s->ctx->srp_ctx.g; -} - -BIGNUM *SSL_get_srp_N(SSL *s) -{ - if (s->srp_ctx.N != NULL) - return s->srp_ctx.N; - return s->ctx->srp_ctx.N; -} - -char *SSL_get_srp_username(SSL *s) -{ - if (s->srp_ctx.login != NULL) - return s->srp_ctx.login; - return s->ctx->srp_ctx.login; -} - -char *SSL_get_srp_userinfo(SSL *s) -{ - if (s->srp_ctx.info != NULL) - return s->srp_ctx.info; - return s->ctx->srp_ctx.info; -} - -# define tls1_ctx_ctrl ssl3_ctx_ctrl -# define tls1_ctx_callback_ctrl ssl3_ctx_callback_ctrl - -int SSL_CTX_set_srp_username(SSL_CTX *ctx, char *name) -{ - return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_USERNAME, 0, name); -} - -int SSL_CTX_set_srp_password(SSL_CTX *ctx, char *password) -{ - return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD, 0, password); -} - -int SSL_CTX_set_srp_strength(SSL_CTX *ctx, int strength) -{ - return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_STRENGTH, strength, - NULL); -} - -int SSL_CTX_set_srp_verify_param_callback(SSL_CTX *ctx, - int (*cb) (SSL *, void *)) -{ - return tls1_ctx_callback_ctrl(ctx, SSL_CTRL_SET_SRP_VERIFY_PARAM_CB, - (void (*)(void))cb); -} - -int SSL_CTX_set_srp_cb_arg(SSL_CTX *ctx, void *arg) -{ - return tls1_ctx_ctrl(ctx, SSL_CTRL_SET_SRP_ARG, 0, arg); -} - -int SSL_CTX_set_srp_username_callback(SSL_CTX *ctx, - int (*cb) (SSL *, int *, void *)) -{ - return tls1_ctx_callback_ctrl(ctx, SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB, - (void (*)(void))cb); -} - -int SSL_CTX_set_srp_client_pwd_callback(SSL_CTX *ctx, - char *(*cb) (SSL *, void *)) -{ - return tls1_ctx_callback_ctrl(ctx, SSL_CTRL_SET_SRP_GIVE_CLIENT_PWD_CB, - (void (*)(void))cb); -} - -#endif |