From 0e7e4005460964cf8dac080e3d99e1df2a1bdc4d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Parm=C3=A9nides=20GV?= Date: Fri, 12 Dec 2014 11:49:24 +0100 Subject: Updated ics-openvpn to rev924. --- ics-openvpn-stripped/main/openssl/ssl/tls_srp.c | 48 +++++++++++++++++++------ 1 file changed, 37 insertions(+), 11 deletions(-) (limited to 'ics-openvpn-stripped/main/openssl/ssl/tls_srp.c') diff --git a/ics-openvpn-stripped/main/openssl/ssl/tls_srp.c b/ics-openvpn-stripped/main/openssl/ssl/tls_srp.c index 2315a7c0..e7368a8f 100644 --- a/ics-openvpn-stripped/main/openssl/ssl/tls_srp.c +++ b/ics-openvpn-stripped/main/openssl/ssl/tls_srp.c @@ -408,16 +408,46 @@ err: return ret; } -int SRP_Calc_A_param(SSL *s) +int srp_verify_server_param(SSL *s, int *al) { - unsigned char rnd[SSL_MAX_MASTER_KEY_LENGTH]; + 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(s->srp_ctx.N) < s->srp_ctx.strength) - return -1; + if (BN_num_bits(srp->N) < srp->strength) + { + *al = TLS1_AD_INSUFFICIENT_SECURITY; + return 0; + } - if (s->srp_ctx.SRP_verify_param_callback ==NULL && - !SRP_check_known_gN_param(s->srp_ctx.g,s->srp_ctx.N)) - return -1 ; + 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]; RAND_bytes(rnd, sizeof(rnd)); s->srp_ctx.a = BN_bin2bn(rnd, sizeof(rnd), s->srp_ctx.a); @@ -426,10 +456,6 @@ int SRP_Calc_A_param(SSL *s) if (!(s->srp_ctx.A = SRP_Calc_A(s->srp_ctx.a,s->srp_ctx.N,s->srp_ctx.g))) return -1; - /* We can have a callback to verify SRP param!! */ - if (s->srp_ctx.SRP_verify_param_callback !=NULL) - return s->srp_ctx.SRP_verify_param_callback(s,s->srp_ctx.SRP_cb_arg); - return 1; } -- cgit v1.2.3