diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2015-08-20 00:45:08 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2015-08-20 00:45:08 +0200 |
| commit | a40c4006d21d6e553d805da7d1a297bdce42f571 (patch) | |
| tree | f58944ec948ee5163bad60cdcc5694edc12203ae /sys/src/libsec | |
| parent | d3f05df5d6839e179222cf691ab9a455044687ea (diff) | |
libsec: add pbkdf2_hmac_sha1() (from wpapsk factotum module)
Diffstat (limited to 'sys/src/libsec')
| -rw-r--r-- | sys/src/libsec/port/mkfile | 1 | ||||
| -rw-r--r-- | sys/src/libsec/port/pbkdf2.c | 29 |
2 files changed, 30 insertions, 0 deletions
diff --git a/sys/src/libsec/port/mkfile b/sys/src/libsec/port/mkfile index c99fcc85d..60aebe629 100644 --- a/sys/src/libsec/port/mkfile +++ b/sys/src/libsec/port/mkfile @@ -21,6 +21,7 @@ CFILES = des.c desmodes.c desECB.c desCBC.c des3ECB.c des3CBC.c\ ecc.c\ ripemd.c\ dh.c\ + pbkdf2.c\ ALLOFILES=${CFILES:%.c=%.$O} diff --git a/sys/src/libsec/port/pbkdf2.c b/sys/src/libsec/port/pbkdf2.c new file mode 100644 index 000000000..95c26422f --- /dev/null +++ b/sys/src/libsec/port/pbkdf2.c @@ -0,0 +1,29 @@ +#include "os.h" +#include <mp.h> +#include <libsec.h> + +void +pbkdf2_hmac_sha1(uchar *p, ulong plen, uchar *s, ulong slen, ulong rounds, uchar *d, ulong dlen) +{ + uchar block[SHA1dlen], tmp[SHA1dlen], tmp2[SHA1dlen]; + ulong i, j, k, n; + DigestState *ds; + + for(i = 1; dlen > 0; i++, d += n, dlen -= n){ + tmp[3] = i; + tmp[2] = i >> 8; + tmp[1] = i >> 16; + tmp[0] = i >> 24; + ds = hmac_sha1(s, slen, p, plen, nil, nil); + hmac_sha1(tmp, 4, p, plen, block, ds); + memmove(tmp, block, sizeof(tmp)); + for(j = 1; j < rounds; j++){ + hmac_sha1(tmp, sizeof(tmp), p, plen, tmp2, nil); + memmove(tmp, tmp2, sizeof(tmp)); + for(k=0; k<sizeof(tmp); k++) + block[k] ^= tmp[k]; + } + n = dlen > sizeof(block) ? sizeof(block) : dlen; + memmove(d, block, n); + } +} |