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| author | Jouni Malinen <j@w1.fi> | 2009-01-01 22:56:52 +0200 |
|---|---|---|
| committer | Jouni Malinen <j@w1.fi> | 2009-01-01 22:56:52 +0200 |
| commit | 79da74a20c0f61ded4c0fd203f054cf3783f54da (patch) | |
| tree | 7026e9d131c454f430e4cb10058b0bb8cb65299e /src/utils | |
| parent | 84f5b41fc1e7a74c343b42075e1708a19d44a63e (diff) | |
| download | external_wpa_supplicant_8_ti-79da74a20c0f61ded4c0fd203f054cf3783f54da.zip external_wpa_supplicant_8_ti-79da74a20c0f61ded4c0fd203f054cf3783f54da.tar.gz external_wpa_supplicant_8_ti-79da74a20c0f61ded4c0fd203f054cf3783f54da.tar.bz2 | |
WPS: Generate UUID based on MAC address, if not set
Generate a SHA1 hash -based UUID from the local MAC address if the UUID
was not configured. This makes it easier to prepare for WPS since there
is no need to generate an UUID.
Diffstat (limited to 'src/utils')
| -rw-r--r-- | src/utils/uuid.c | 30 | ||||
| -rw-r--r-- | src/utils/uuid.h | 1 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/utils/uuid.c b/src/utils/uuid.c index d8cc267..620d3d6 100644 --- a/src/utils/uuid.c +++ b/src/utils/uuid.c @@ -15,6 +15,8 @@ #include "includes.h" #include "common.h" +#include "crypto.h" +#include "sha1.h" #include "uuid.h" int uuid_str2bin(const char *str, u8 *bin) @@ -75,3 +77,31 @@ int is_nil_uuid(const u8 *uuid) return 0; return 1; } + + +void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid) +{ + const u8 *addr[2]; + size_t len[2]; + u8 hash[SHA1_MAC_LEN]; + u8 nsid[16] = { + 0x52, 0x64, 0x80, 0xf8, + 0xc9, 0x9b, + 0x4b, 0xe5, + 0xa6, 0x55, + 0x58, 0xed, 0x5f, 0x5d, 0x60, 0x84 + }; + + addr[0] = nsid; + len[0] = sizeof(nsid); + addr[1] = mac_addr; + len[1] = 6; + sha1_vector(2, addr, len, hash); + os_memcpy(uuid, hash, 16); + + /* Version: 5 = named-based version using SHA-1 */ + uuid[6] = (5 << 4) | (uuid[6] & 0x0f); + + /* Variant specified in RFC 4122 */ + uuid[8] = 0x80 | (uuid[8] & 0x3f); +} diff --git a/src/utils/uuid.h b/src/utils/uuid.h index 0759165..9fc2ba0 100644 --- a/src/utils/uuid.h +++ b/src/utils/uuid.h @@ -20,5 +20,6 @@ int uuid_str2bin(const char *str, u8 *bin); int uuid_bin2str(const u8 *bin, char *str, size_t max_len); int is_nil_uuid(const u8 *uuid); +void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid); #endif /* UUID_H */ |