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| author | dimitri staessens <dimitri.staessens@ugent.be> | 2017-04-16 12:04:59 +0200 |
|---|---|---|
| committer | dimitri staessens <dimitri.staessens@ugent.be> | 2017-04-16 13:40:12 +0200 |
| commit | 97ef24340da7d3f55a39ba16b400d13f9bbe9e60 (patch) | |
| tree | e13656c267343db47a4f79d2098222909222736d /src/lib | |
| parent | c884fb9d6b3d3ea59f5fc7c5d709bfff4fcf1849 (diff) | |
| download | ouroboros-97ef24340da7d3f55a39ba16b400d13f9bbe9e60.tar.gz ouroboros-97ef24340da7d3f55a39ba16b400d13f9bbe9e60.zip | |
ipcpd: Allow specifying the hash algorithm to use
Currently CRC32, MD5, and SHA3 (224, 256, 384 and 512 bit) are supported.
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/hash.c | 69 | ||||
| -rw-r--r-- | src/lib/ipcp_config.proto | 2 | ||||
| -rw-r--r-- | src/lib/irm.c | 3 |
3 files changed, 64 insertions, 10 deletions
diff --git a/src/lib/hash.c b/src/lib/hash.c index f4fd75ea..e7806d94 100644 --- a/src/lib/hash.c +++ b/src/lib/hash.c @@ -28,16 +28,69 @@ #include <ouroboros/hash.h> #include <string.h> +#include <assert.h> +#include <stdbool.h> -void get_hash(uint8_t buf[], - const char * name) +uint16_t hash_len(enum hash_algo algo) { - /* currently we only support 256 bit SHA-3 */ - struct sha3_ctx ctx; - - rhash_sha3_256_init(&ctx); + switch (algo) { + case HASH_CRC32: + return CRC32_HASH_LEN; + case HASH_MD5: + return MD5_HASH_LEN; + case HASH_SHA3_224: + return SHA3_224_HASH_LEN; + case HASH_SHA3_256: + return SHA3_256_HASH_LEN; + case HASH_SHA3_384: + return SHA3_384_HASH_LEN; + case HASH_SHA3_512: + return SHA3_512_HASH_LEN; + default: + assert(false); + break; + } +} - rhash_sha3_update(&ctx, name, strlen(name)); +void str_hash(enum hash_algo algo, + void * buf, + const char * str) +{ + struct sha3_ctx sha3_ctx; + struct md5_ctx md5_ctx; - rhash_sha3_final(&ctx, buf); + switch (algo) { + case HASH_CRC32: + memset(buf, 0, CRC32_HASH_LEN); + crc32((uint32_t *) buf, str, strlen(str)); + break; + case HASH_MD5: + rhash_md5_init(&md5_ctx); + rhash_md5_update(&md5_ctx, str, strlen(str)); + rhash_md5_final(&md5_ctx, (uint8_t *) buf); + break; + case HASH_SHA3_224: + rhash_sha3_224_init(&sha3_ctx); + rhash_sha3_update(&sha3_ctx, str, strlen(str)); + rhash_sha3_final(&sha3_ctx, (uint8_t *) buf); + break; + case HASH_SHA3_256: + rhash_sha3_256_init(&sha3_ctx); + rhash_sha3_update(&sha3_ctx, str, strlen(str)); + rhash_sha3_final(&sha3_ctx, (uint8_t *) buf); + break; + case HASH_SHA3_384: + rhash_sha3_384_init(&sha3_ctx); + rhash_sha3_update(&sha3_ctx, str, strlen(str)); + rhash_sha3_final(&sha3_ctx, (uint8_t *) buf); + break; + case HASH_SHA3_512: + rhash_sha3_512_init(&sha3_ctx); + rhash_sha3_update(&sha3_ctx, str, strlen(str)); + rhash_sha3_final(&sha3_ctx, (uint8_t *) buf); + break; + default: + assert(false); + break; + } } diff --git a/src/lib/ipcp_config.proto b/src/lib/ipcp_config.proto index a0c14c41..d5ff75d6 100644 --- a/src/lib/ipcp_config.proto +++ b/src/lib/ipcp_config.proto @@ -25,7 +25,7 @@ syntax = "proto2"; message ipcp_config_msg { required string dif_name = 1; - required uint32 dir_hash_len = 2; + required uint32 dir_hash_algo = 2; required int32 ipcp_type = 3; // Config for normal IPCP optional uint32 addr_size = 4; diff --git a/src/lib/irm.c b/src/lib/irm.c index a2fd5d0b..12d8e8f7 100644 --- a/src/lib/irm.c +++ b/src/lib/irm.c @@ -23,6 +23,7 @@ #include <ouroboros/config.h> #include <ouroboros/errno.h> +#include <ouroboros/hash.h> #include <ouroboros/irm.h> #include <ouroboros/utils.h> #include <ouroboros/sockets.h> @@ -105,7 +106,7 @@ int irm_bootstrap_ipcp(pid_t api, msg.conf = &config; config.dif_name = conf->dif_name; config.ipcp_type = conf->type; - config.dir_hash_len = (uint16_t) conf->dir_hash_len; + config.dir_hash_algo = (enum hash_algo) conf->dir_hash_algo; switch (conf->type) { case IPCP_NORMAL: |