diff options
Diffstat (limited to 'ssl/t1_lib.c')
| -rw-r--r-- | ssl/t1_lib.c | 136 |
1 files changed, 85 insertions, 51 deletions
diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c index 8fad1f20df..52e6d5426a 100644 --- a/ssl/t1_lib.c +++ b/ssl/t1_lib.c @@ -132,40 +132,44 @@ int tls1_clear(SSL *s) /* * Table of curve information. - * Do not delete entries or reorder this array! It is used as a lookup - * table: the index of each entry is one less than the TLS curve id. */ static const TLS_GROUP_INFO nid_list[] = { - {NID_sect163k1, 80, TLS_CURVE_CHAR2}, /* sect163k1 (1) */ - {NID_sect163r1, 80, TLS_CURVE_CHAR2}, /* sect163r1 (2) */ - {NID_sect163r2, 80, TLS_CURVE_CHAR2}, /* sect163r2 (3) */ - {NID_sect193r1, 80, TLS_CURVE_CHAR2}, /* sect193r1 (4) */ - {NID_sect193r2, 80, TLS_CURVE_CHAR2}, /* sect193r2 (5) */ - {NID_sect233k1, 112, TLS_CURVE_CHAR2}, /* sect233k1 (6) */ - {NID_sect233r1, 112, TLS_CURVE_CHAR2}, /* sect233r1 (7) */ - {NID_sect239k1, 112, TLS_CURVE_CHAR2}, /* sect239k1 (8) */ - {NID_sect283k1, 128, TLS_CURVE_CHAR2}, /* sect283k1 (9) */ - {NID_sect283r1, 128, TLS_CURVE_CHAR2}, /* sect283r1 (10) */ - {NID_sect409k1, 192, TLS_CURVE_CHAR2}, /* sect409k1 (11) */ - {NID_sect409r1, 192, TLS_CURVE_CHAR2}, /* sect409r1 (12) */ - {NID_sect571k1, 256, TLS_CURVE_CHAR2}, /* sect571k1 (13) */ - {NID_sect571r1, 256, TLS_CURVE_CHAR2}, /* sect571r1 (14) */ - {NID_secp160k1, 80, TLS_CURVE_PRIME}, /* secp160k1 (15) */ - {NID_secp160r1, 80, TLS_CURVE_PRIME}, /* secp160r1 (16) */ - {NID_secp160r2, 80, TLS_CURVE_PRIME}, /* secp160r2 (17) */ - {NID_secp192k1, 80, TLS_CURVE_PRIME}, /* secp192k1 (18) */ - {NID_X9_62_prime192v1, 80, TLS_CURVE_PRIME}, /* secp192r1 (19) */ - {NID_secp224k1, 112, TLS_CURVE_PRIME}, /* secp224k1 (20) */ - {NID_secp224r1, 112, TLS_CURVE_PRIME}, /* secp224r1 (21) */ - {NID_secp256k1, 128, TLS_CURVE_PRIME}, /* secp256k1 (22) */ - {NID_X9_62_prime256v1, 128, TLS_CURVE_PRIME}, /* secp256r1 (23) */ - {NID_secp384r1, 192, TLS_CURVE_PRIME}, /* secp384r1 (24) */ - {NID_secp521r1, 256, TLS_CURVE_PRIME}, /* secp521r1 (25) */ - {NID_brainpoolP256r1, 128, TLS_CURVE_PRIME}, /* brainpoolP256r1 (26) */ - {NID_brainpoolP384r1, 192, TLS_CURVE_PRIME}, /* brainpoolP384r1 (27) */ - {NID_brainpoolP512r1, 256, TLS_CURVE_PRIME}, /* brainpool512r1 (28) */ - {EVP_PKEY_X25519, 128, TLS_CURVE_CUSTOM}, /* X25519 (29) */ - {EVP_PKEY_X448, 224, TLS_CURVE_CUSTOM}, /* X448 (30) */ + {NID_sect163k1, 80, TLS_GROUP_CURVE_CHAR2, 0x0001}, /* sect163k1 (1) */ + {NID_sect163r1, 80, TLS_GROUP_CURVE_CHAR2, 0x0002}, /* sect163r1 (2) */ + {NID_sect163r2, 80, TLS_GROUP_CURVE_CHAR2, 0x0003}, /* sect163r2 (3) */ + {NID_sect193r1, 80, TLS_GROUP_CURVE_CHAR2, 0x0004}, /* sect193r1 (4) */ + {NID_sect193r2, 80, TLS_GROUP_CURVE_CHAR2, 0x0005}, /* sect193r2 (5) */ + {NID_sect233k1, 112, TLS_GROUP_CURVE_CHAR2, 0x0006}, /* sect233k1 (6) */ + {NID_sect233r1, 112, TLS_GROUP_CURVE_CHAR2, 0x0007}, /* sect233r1 (7) */ + {NID_sect239k1, 112, TLS_GROUP_CURVE_CHAR2, 0x0008}, /* sect239k1 (8) */ + {NID_sect283k1, 128, TLS_GROUP_CURVE_CHAR2, 0x0009}, /* sect283k1 (9) */ + {NID_sect283r1, 128, TLS_GROUP_CURVE_CHAR2, 0x000A}, /* sect283r1 (10) */ + {NID_sect409k1, 192, TLS_GROUP_CURVE_CHAR2, 0x000B}, /* sect409k1 (11) */ + {NID_sect409r1, 192, TLS_GROUP_CURVE_CHAR2, 0x000C}, /* sect409r1 (12) */ + {NID_sect571k1, 256, TLS_GROUP_CURVE_CHAR2, 0x000D}, /* sect571k1 (13) */ + {NID_sect571r1, 256, TLS_GROUP_CURVE_CHAR2, 0x000E}, /* sect571r1 (14) */ + {NID_secp160k1, 80, TLS_GROUP_CURVE_PRIME, 0x000F}, /* secp160k1 (15) */ + {NID_secp160r1, 80, TLS_GROUP_CURVE_PRIME, 0x0010}, /* secp160r1 (16) */ + {NID_secp160r2, 80, TLS_GROUP_CURVE_PRIME, 0x0011}, /* secp160r2 (17) */ + {NID_secp192k1, 80, TLS_GROUP_CURVE_PRIME, 0x0012}, /* secp192k1 (18) */ + {NID_X9_62_prime192v1, 80, TLS_GROUP_CURVE_PRIME, 0x0013}, /* secp192r1 (19) */ + {NID_secp224k1, 112, TLS_GROUP_CURVE_PRIME, 0x0014}, /* secp224k1 (20) */ + {NID_secp224r1, 112, TLS_GROUP_CURVE_PRIME, 0x0015}, /* secp224r1 (21) */ + {NID_secp256k1, 128, TLS_GROUP_CURVE_PRIME, 0x0016}, /* secp256k1 (22) */ + {NID_X9_62_prime256v1, 128, TLS_GROUP_CURVE_PRIME, 0x0017}, /* secp256r1 (23) */ + {NID_secp384r1, 192, TLS_GROUP_CURVE_PRIME, 0x0018}, /* secp384r1 (24) */ + {NID_secp521r1, 256, TLS_GROUP_CURVE_PRIME, 0x0019}, /* secp521r1 (25) */ + {NID_brainpoolP256r1, 128, TLS_GROUP_CURVE_PRIME, 0x001A}, /* brainpoolP256r1 (26) */ + {NID_brainpoolP384r1, 192, TLS_GROUP_CURVE_PRIME, 0x001B}, /* brainpoolP384r1 (27) */ + {NID_brainpoolP512r1, 256, TLS_GROUP_CURVE_PRIME, 0x001C}, /* brainpool512r1 (28) */ + {EVP_PKEY_X25519, 128, TLS_GROUP_CURVE_CUSTOM, 0x001D}, /* X25519 (29) */ + {EVP_PKEY_X448, 224, TLS_GROUP_CURVE_CUSTOM, 0x001E}, /* X448 (30) */ + /* Security bit values for FFDHE groups are updated as per RFC 7919 */ + {NID_ffdhe2048, 103, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0100}, /* ffdhe2048 (0x0100) */ + {NID_ffdhe3072, 125, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0101}, /* ffdhe3072 (0x0101) */ + {NID_ffdhe4096, 150, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0102}, /* ffdhe4096 (0x0102) */ + {NID_ffdhe6144, 175, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0103}, /* ffdhe6144 (0x0103) */ + {NID_ffdhe8192, 192, TLS_GROUP_FFDHE_FOR_TLS1_3, 0x0104}, /* ffdhe8192 (0x0104) */ }; static const unsigned char ecformats_default[] = { @@ -175,12 +179,17 @@ static const unsigned char ecformats_default[] = { }; /* The default curves */ -static const uint16_t eccurves_default[] = { +static const uint16_t supported_groups_default[] = { 29, /* X25519 (29) */ 23, /* secp256r1 (23) */ 30, /* X448 (30) */ 25, /* secp521r1 (25) */ 24, /* secp384r1 (24) */ + 0x100, /* ffdhe2048 (0x100) */ + 0x101, /* ffdhe3072 (0x101) */ + 0x102, /* ffdhe4096 (0x102) */ + 0x103, /* ffdhe6144 (0x103) */ + 0x104, /* ffdhe8192 (0x104) */ }; static const uint16_t suiteb_curves[] = { @@ -190,18 +199,23 @@ static const uint16_t suiteb_curves[] = { const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t group_id) { - /* ECC curves from RFC 4492 and RFC 7027 */ - if (group_id < 1 || group_id > OSSL_NELEM(nid_list)) - return NULL; - return &nid_list[group_id - 1]; + 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]; + } + return NULL; } 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 (uint16_t)(i + 1); + return nid_list[i].group_id; } return 0; } @@ -233,8 +247,8 @@ void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups, default: if (s->ext.supportedgroups == NULL) { - *pgroups = eccurves_default; - *pgroupslen = OSSL_NELEM(eccurves_default); + *pgroups = supported_groups_default; + *pgroupslen = OSSL_NELEM(supported_groups_default); } else { *pgroups = s->ext.supportedgroups; *pgroupslen = s->ext.supportedgroups_len; @@ -243,6 +257,17 @@ void tls1_get_supported_groups(SSL *s, const uint16_t **pgroups, } } +int tls_valid_group(SSL *s, uint16_t group_id, int version) +{ + const TLS_GROUP_INFO *ginfo = tls1_group_id_lookup(group_id); + + if (version < TLS1_3_VERSION) { + if ((ginfo->flags & TLS_GROUP_ONLY_FOR_TLS1_3) != 0) + return 0; + } + return 1; +} + /* See if curve is allowed by security callback */ int tls_curve_allowed(SSL *s, uint16_t curve, int op) { @@ -252,7 +277,11 @@ int tls_curve_allowed(SSL *s, uint16_t curve, int op) if (cinfo == NULL) return 0; # ifdef OPENSSL_NO_EC2M - if (cinfo->flags & TLS_CURVE_CHAR2) + if (cinfo->flags & TLS_GROUP_CURVE_CHAR2) + return 0; +# endif +# ifdef OPENSSL_NO_DH + if (cinfo->flags & TLS_GROUP_FFDHE) return 0; # endif ctmp[0] = curve >> 8; @@ -338,10 +367,12 @@ int tls1_set_groups(uint16_t **pext, size_t *pextlen, uint16_t *glist; size_t i; /* - * Bitmap of groups included to detect duplicates: only works while group - * ids < 32 + * Bitmap of groups included to detect duplicates: two variables are added + * to detect duplicates as some values are more than 32. */ - unsigned long dup_list = 0; + unsigned long *dup_list = NULL; + unsigned long dup_list_egrp = 0; + unsigned long dup_list_dhgrp = 0; if (ngroups == 0) { SSLerr(SSL_F_TLS1_SET_GROUPS, SSL_R_BAD_LENGTH); @@ -354,20 +385,23 @@ int tls1_set_groups(uint16_t **pext, size_t *pextlen, for (i = 0; i < ngroups; i++) { unsigned long idmask; uint16_t id; - /* TODO(TLS1.3): Convert for DH groups */ id = tls1_nid2group_id(groups[i]); - idmask = 1L << id; - if (!id || (dup_list & idmask)) { - OPENSSL_free(glist); - return 0; - } - dup_list |= idmask; + if ((id & 0x00FF) >= (sizeof(unsigned long) * 8)) + goto err; + idmask = 1L << (id & 0x00FF); + dup_list = (id < 0x100) ? &dup_list_egrp : &dup_list_dhgrp; + if (!id || ((*dup_list) & idmask)) + goto err; + *dup_list |= idmask; glist[i] = id; } OPENSSL_free(*pext); *pext = glist; *pextlen = ngroups; return 1; +err: + OPENSSL_free(glist); + return 0; } # define MAX_CURVELIST OSSL_NELEM(nid_list) |