X-Git-Url: https://git.librecmc.org/?p=oweals%2Fopenssl.git;a=blobdiff_plain;f=ssl%2Ft1_lib.c;h=7f8fc5e6154d69cab4ad8d379f22995d9f016f64;hp=b80ac35d3ad2080e3ad1858332994c8265147d92;hb=9d2d857f135abd281591ee0c2b58e01a710c3cea;hpb=82ec09ec6d4e35ef359a7cb22c0cb46662f18155 diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c index b80ac35d3a..7f8fc5e615 100644 --- a/ssl/t1_lib.c +++ b/ssl/t1_lib.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "internal/nelem.h" #include "internal/evp.h" #include "ssl_local.h" @@ -140,60 +141,54 @@ int tls1_clear(SSL *s) return 1; } -/* - * Table of group information. - */ #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_EC) -static const TLS_GROUP_INFO nid_list[] = { -# ifndef OPENSSL_NO_EC - {NID_sect163k1, "EC", 80, TLS_GROUP_CURVE_CHAR2, 0x0001}, /* sect163k1 (1) */ - {NID_sect163r1, "EC", 80, TLS_GROUP_CURVE_CHAR2, 0x0002}, /* sect163r1 (2) */ - {NID_sect163r2, "EC", 80, TLS_GROUP_CURVE_CHAR2, 0x0003}, /* sect163r2 (3) */ - {NID_sect193r1, "EC", 80, TLS_GROUP_CURVE_CHAR2, 0x0004}, /* sect193r1 (4) */ - {NID_sect193r2, "EC", 80, TLS_GROUP_CURVE_CHAR2, 0x0005}, /* sect193r2 (5) */ - {NID_sect233k1, "EC", 112, TLS_GROUP_CURVE_CHAR2, 0x0006}, /* sect233k1 (6) */ - {NID_sect233r1, "EC", 112, TLS_GROUP_CURVE_CHAR2, 0x0007}, /* sect233r1 (7) */ - {NID_sect239k1, "EC", 112, TLS_GROUP_CURVE_CHAR2, 0x0008}, /* sect239k1 (8) */ - {NID_sect283k1, "EC", 128, TLS_GROUP_CURVE_CHAR2, 0x0009}, /* sect283k1 (9) */ - {NID_sect283r1, "EC", 128, TLS_GROUP_CURVE_CHAR2, 0x000A}, /* sect283r1 (10) */ - {NID_sect409k1, "EC", 192, TLS_GROUP_CURVE_CHAR2, 0x000B}, /* sect409k1 (11) */ - {NID_sect409r1, "EC", 192, TLS_GROUP_CURVE_CHAR2, 0x000C}, /* sect409r1 (12) */ - {NID_sect571k1, "EC", 256, TLS_GROUP_CURVE_CHAR2, 0x000D}, /* sect571k1 (13) */ - {NID_sect571r1, "EC", 256, TLS_GROUP_CURVE_CHAR2, 0x000E}, /* sect571r1 (14) */ - {NID_secp160k1, "EC", 80, TLS_GROUP_CURVE_PRIME, 0x000F}, /* secp160k1 (15) */ - {NID_secp160r1, "EC", 80, TLS_GROUP_CURVE_PRIME, 0x0010}, /* secp160r1 (16) */ - {NID_secp160r2, "EC", 80, TLS_GROUP_CURVE_PRIME, 0x0011}, /* secp160r2 (17) */ - {NID_secp192k1, "EC", 80, TLS_GROUP_CURVE_PRIME, 0x0012}, /* secp192k1 (18) */ - {NID_X9_62_prime192v1, "EC", 80, TLS_GROUP_CURVE_PRIME, 0x0013}, /* secp192r1 (19) */ - {NID_secp224k1, "EC", 112, TLS_GROUP_CURVE_PRIME, 0x0014}, /* secp224k1 (20) */ - {NID_secp224r1, "EC", 112, TLS_GROUP_CURVE_PRIME, 0x0015}, /* secp224r1 (21) */ - {NID_secp256k1, "EC", 128, TLS_GROUP_CURVE_PRIME, 0x0016}, /* secp256k1 (22) */ - {NID_X9_62_prime256v1, "EC", 128, TLS_GROUP_CURVE_PRIME, 0x0017}, /* secp256r1 (23) */ - {NID_secp384r1, "EC", 192, TLS_GROUP_CURVE_PRIME, 0x0018}, /* secp384r1 (24) */ - {NID_secp521r1, "EC", 256, TLS_GROUP_CURVE_PRIME, 0x0019}, /* secp521r1 (25) */ - {NID_brainpoolP256r1, "EC", 128, TLS_GROUP_CURVE_PRIME, 0x001A}, /* brainpoolP256r1 (26) */ - {NID_brainpoolP384r1, "EC", 192, TLS_GROUP_CURVE_PRIME, 0x001B}, /* brainpoolP384r1 (27) */ - {NID_brainpoolP512r1, "EC", 256, TLS_GROUP_CURVE_PRIME, 0x001C}, /* brainpool512r1 (28) */ - {EVP_PKEY_X25519, "X25519", 128, TLS_GROUP_CURVE_CUSTOM, 0x001D}, /* X25519 (29) */ - {EVP_PKEY_X448, "X448", 224, TLS_GROUP_CURVE_CUSTOM, 0x001E}, /* X448 (30) */ -# endif /* OPENSSL_NO_EC */ -# ifndef OPENSSL_NO_GOST - {NID_id_tc26_gost_3410_2012_256_paramSetA, "GOST_2012_256", 128, TLS_GROUP_CURVE_PRIME, 0x0022}, /* GC256A (34) */ - {NID_id_tc26_gost_3410_2012_256_paramSetB, "GOST_2012_256", 128, TLS_GROUP_CURVE_PRIME, 0x0023}, /* GC256B (35) */ - {NID_id_tc26_gost_3410_2012_256_paramSetC, "GOST_2012_256", 128, TLS_GROUP_CURVE_PRIME, 0x0024}, /* GC256C (36) */ - {NID_id_tc26_gost_3410_2012_256_paramSetD, "GOST_2012_256", 128, TLS_GROUP_CURVE_PRIME, 0x0025}, /* GC256D (37) */ - {NID_id_tc26_gost_3410_2012_512_paramSetA, "GOST_2012_512", 256, TLS_GROUP_CURVE_PRIME, 0x0026}, /* GC512A (38) */ - {NID_id_tc26_gost_3410_2012_512_paramSetB, "GOST_2012_512", 256, TLS_GROUP_CURVE_PRIME, 0x0027}, /* GC512B (39) */ - {NID_id_tc26_gost_3410_2012_512_paramSetC, "GOST_2012_512", 256, TLS_GROUP_CURVE_PRIME, 0x0028}, /* GC512C (40) */ -# endif /* OPENSSL_NO_GOST */ -# ifndef OPENSSL_NO_DH - /* Security bit values for FFDHE groups are updated as per RFC 7919 */ - {NID_ffdhe2048, "DH", 103, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0100}, /* ffdhe2048 (0x0100) */ - {NID_ffdhe3072, "DH", 125, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0101}, /* ffdhe3072 (0x0101) */ - {NID_ffdhe4096, "DH", 150, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0102}, /* ffdhe4096 (0x0102) */ - {NID_ffdhe6144, "DH", 175, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0103}, /* ffdhe6144 (0x0103) */ - {NID_ffdhe8192, "DH", 192, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0104}, /* ffdhe8192 (0x0104) */ -# endif /* OPENSSL_NO_DH */ +/* Legacy NID to group_id mapping. Only works for groups we know about */ +static struct { + int nid; + uint16_t group_id; +} nid_to_group[] = { + {NID_sect163k1, 0x0001}, + {NID_sect163r1, 0x0002}, + {NID_sect163r2, 0x0003}, + {NID_sect193r1, 0x0004}, + {NID_sect193r2, 0x0005}, + {NID_sect233k1, 0x0006}, + {NID_sect233r1, 0x0007}, + {NID_sect239k1, 0x0008}, + {NID_sect283k1, 0x0009}, + {NID_sect283r1, 0x000A}, + {NID_sect409k1, 0x000B}, + {NID_sect409r1, 0x000C}, + {NID_sect571k1, 0x000D}, + {NID_sect571r1, 0x000E}, + {NID_secp160k1, 0x000F}, + {NID_secp160r1, 0x0010}, + {NID_secp160r2, 0x0011}, + {NID_secp192k1, 0x0012}, + {NID_X9_62_prime192v1, 0x0013}, + {NID_secp224k1, 0x0014}, + {NID_secp224r1, 0x0015}, + {NID_secp256k1, 0x0016}, + {NID_X9_62_prime256v1, 0x0017}, + {NID_secp384r1, 0x0018}, + {NID_secp521r1, 0x0019}, + {NID_brainpoolP256r1, 0x001A}, + {NID_brainpoolP384r1, 0x001B}, + {NID_brainpoolP512r1, 0x001C}, + {EVP_PKEY_X25519, 0x001D}, + {EVP_PKEY_X448, 0x001E}, + {NID_id_tc26_gost_3410_2012_256_paramSetA, 0x0022}, + {NID_id_tc26_gost_3410_2012_256_paramSetB, 0x0023}, + {NID_id_tc26_gost_3410_2012_256_paramSetC, 0x0024}, + {NID_id_tc26_gost_3410_2012_256_paramSetD, 0x0025}, + {NID_id_tc26_gost_3410_2012_512_paramSetA, 0x0026}, + {NID_id_tc26_gost_3410_2012_512_paramSetB, 0x0027}, + {NID_id_tc26_gost_3410_2012_512_paramSetC, 0x0028}, + {NID_ffdhe2048, 0x0100}, + {NID_ffdhe3072, 0x0101}, + {NID_ffdhe4096, 0x0102}, + {NID_ffdhe6144, 0x0103}, + {NID_ffdhe8192, 0x0104} }; #endif @@ -241,36 +236,213 @@ static const uint16_t suiteb_curves[] = { }; #endif -const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t group_id) +struct provider_group_data_st { + SSL_CTX *ctx; + OSSL_PROVIDER *provider; +}; + +#define TLS_GROUP_LIST_MALLOC_BLOCK_SIZE 10 +static OSSL_CALLBACK add_provider_groups; +static int add_provider_groups(const OSSL_PARAM params[], void *data) +{ + struct provider_group_data_st *pgd = data; + SSL_CTX *ctx = pgd->ctx; + OSSL_PROVIDER *provider = pgd->provider; + const OSSL_PARAM *p; + TLS_GROUP_INFO *ginf = NULL; + EVP_KEYMGMT *keymgmt; + unsigned int gid; + int ret = 0; + + if (ctx->group_list_max_len == ctx->group_list_len) { + TLS_GROUP_INFO *tmp = NULL; + + if (ctx->group_list_max_len == 0) + tmp = OPENSSL_malloc(sizeof(TLS_GROUP_INFO) + * TLS_GROUP_LIST_MALLOC_BLOCK_SIZE); + else + tmp = OPENSSL_realloc(ctx->group_list, + (ctx->group_list_max_len + + TLS_GROUP_LIST_MALLOC_BLOCK_SIZE) + * sizeof(TLS_GROUP_INFO)); + if (tmp == NULL) { + SSLerr(0, ERR_R_MALLOC_FAILURE); + return 0; + } + ctx->group_list = tmp; + memset(tmp + ctx->group_list_max_len, + 0, + sizeof(TLS_GROUP_INFO) * TLS_GROUP_LIST_MALLOC_BLOCK_SIZE); + ctx->group_list_max_len += TLS_GROUP_LIST_MALLOC_BLOCK_SIZE; + } + + ginf = &ctx->group_list[ctx->group_list_len]; + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_NAME); + if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + ginf->tlsname = OPENSSL_strdup(p->data); + if (ginf->tlsname == NULL) { + SSLerr(0, ERR_R_MALLOC_FAILURE); + goto err; + } + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_NAME_INTERNAL); + if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + ginf->realname = OPENSSL_strdup(p->data); + if (ginf->realname == NULL) { + SSLerr(0, ERR_R_MALLOC_FAILURE); + goto err; + } + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_ID); + if (p == NULL || !OSSL_PARAM_get_uint(p, &gid) || gid > UINT16_MAX) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + ginf->group_id = (uint16_t)gid; + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_ALG); + if (p == NULL || p->data_type != OSSL_PARAM_UTF8_STRING) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + ginf->algorithm = OPENSSL_strdup(p->data); + if (ginf->algorithm == NULL) { + SSLerr(0, ERR_R_MALLOC_FAILURE); + goto err; + } + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_SECURITY_BITS); + if (p == NULL || !OSSL_PARAM_get_uint(p, &ginf->secbits)) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MIN_TLS); + if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->mintls)) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MAX_TLS); + if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->maxtls)) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + return 0; + } + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MIN_DTLS); + if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->mindtls)) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + + p = OSSL_PARAM_locate_const(params, OSSL_CAPABILITY_TLS_GROUP_MAX_DTLS); + if (p == NULL || !OSSL_PARAM_get_int(p, &ginf->maxdtls)) { + SSLerr(0, ERR_R_PASSED_INVALID_ARGUMENT); + goto err; + } + /* + * Now check that the algorithm is actually usable for our property query + * string. Regardless of the result we still return success because we have + * successfully processed this group, even though we may decide not to use + * it. + */ + ret = 1; + keymgmt = EVP_KEYMGMT_fetch(ctx->libctx, ginf->algorithm, ctx->propq); + if (keymgmt != NULL) { + /* + * We have successfully fetched the algorithm - however if the provider + * doesn't match this one then we ignore it. + * + * Note: We're cheating a little here. Technically if the same algorithm + * is available from more than one provider then it is undefined which + * implementation you will get back. Theoretically this could be + * different every time...we assume here that you'll always get the + * same one back if you repeat the exact same fetch. Is this a reasonable + * assumption to make (in which case perhaps we should document this + * behaviour)? + */ + if (EVP_KEYMGMT_provider(keymgmt) == provider) { + /* We have a match - so we will use this group */ + ctx->group_list_len++; + ginf = NULL; + } + EVP_KEYMGMT_free(keymgmt); + } + err: + if (ginf != NULL) { + OPENSSL_free(ginf->tlsname); + OPENSSL_free(ginf->realname); + OPENSSL_free(ginf->algorithm); + ginf->tlsname = ginf->realname = NULL; + } + return ret; +} + +static int discover_provider_groups(OSSL_PROVIDER *provider, void *vctx) +{ + struct provider_group_data_st pgd; + + pgd.ctx = vctx; + pgd.provider = provider; + return OSSL_PROVIDER_get_capabilities(provider, "TLS-GROUP", + add_provider_groups, &pgd); +} + +int ssl_load_groups(SSL_CTX *ctx) +{ + return OSSL_PROVIDER_do_all(ctx->libctx, discover_provider_groups, ctx); +} + +const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t group_id) { -#if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_EC) size_t i; - /* ECC curves from RFC 4492 and RFC 7027 FFDHE group from RFC 8446 */ - for (i = 0; i < OSSL_NELEM(nid_list); i++) { - if (nid_list[i].group_id == group_id) - return &nid_list[i]; + for (i = 0; i < ctx->group_list_len; i++) { + if (ctx->group_list[i].group_id == group_id) + return &ctx->group_list[i]; } -#endif /* !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_EC) */ + return NULL; } #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_EC) int tls1_group_id2nid(uint16_t group_id) { - const TLS_GROUP_INFO *ginf = tls1_group_id_lookup(group_id); + size_t i; - return ginf == NULL ? NID_undef : ginf->nid; + /* + * Return well known Group NIDs - for backwards compatibility. This won't + * work for groups we don't know about. + */ + for (i = 0; i < OSSL_NELEM(nid_to_group); i++) + { + if (nid_to_group[i].group_id == group_id) + return nid_to_group[i].nid; + } + return NID_undef; } static uint16_t tls1_nid2group_id(int nid) { size_t i; - for (i = 0; i < OSSL_NELEM(nid_list); i++) { - if (nid_list[i].nid == nid) - return nid_list[i].group_id; + /* + * Return well known Group ids - for backwards compatibility. This won't + * work for groups we don't know about. + */ + for (i = 0; i < OSSL_NELEM(nid_to_group); i++) + { + if (nid_to_group[i].nid == nid) + return nid_to_group[i].group_id; } + return 0; } #endif /* !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) */ @@ -318,36 +490,50 @@ void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups, #endif /* !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) */ } -int tls_valid_group(SSL *s, uint16_t group_id, int version) +int tls_valid_group(SSL *s, uint16_t group_id, int minversion, int maxversion) { - const TLS_GROUP_INFO *ginfo = tls1_group_id_lookup(group_id); + const TLS_GROUP_INFO *ginfo = tls1_group_id_lookup(s->ctx, group_id); + int ret; + + if (ginfo == NULL) + return 0; - if (version < TLS1_3_VERSION) { - if ((ginfo->flags & TLS_GROUP_ONLY_FOR_TLS1_3) != 0) + if (SSL_IS_DTLS(s)) { + if (ginfo->mindtls < 0 || ginfo->maxdtls < 0) return 0; + if (ginfo->maxdtls == 0) + ret = 1; + else + ret = DTLS_VERSION_LE(minversion, ginfo->maxdtls); + if (ginfo->mindtls > 0) + ret &= DTLS_VERSION_GE(maxversion, ginfo->mindtls); + } else { + if (ginfo->mintls < 0 || ginfo->maxtls < 0) + return 0; + if (ginfo->maxtls == 0) + ret = 1; + else + ret = (minversion <= ginfo->maxtls); + if (ginfo->mintls > 0) + ret &= (maxversion >= ginfo->mintls); } - return 1; + + return ret; } /* See if group is allowed by security callback */ int tls_group_allowed(SSL *s, uint16_t group, int op) { - const TLS_GROUP_INFO *ginfo = tls1_group_id_lookup(group); + const TLS_GROUP_INFO *ginfo = tls1_group_id_lookup(s->ctx, group); unsigned char gtmp[2]; if (ginfo == NULL) return 0; -#ifdef OPENSSL_NO_EC2M - if (ginfo->flags & TLS_GROUP_CURVE_CHAR2) - return 0; -#endif -#ifdef OPENSSL_NO_DH - if (ginfo->flags & TLS_GROUP_FFDHE) - return 0; -#endif + gtmp[0] = group >> 8; gtmp[1] = group & 0xff; - return ssl_security(s, op, ginfo->secbits, ginfo->nid, (void *)gtmp); + return ssl_security(s, op, ginfo->secbits, + tls1_group_id2nid(ginfo->group_id), (void *)gtmp); } /* Return 1 if "id" is in "list" */ @@ -470,7 +656,8 @@ err: } #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) -# define MAX_GROUPLIST OSSL_NELEM(nid_list) +/* TODO(3.0): An arbitrary amount for now. Take another look at this */ +# define MAX_GROUPLIST 40 typedef struct { size_t nidcnt;