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| author | Werner Koch <wk@gnupg.org> | 2013-05-24 15:52:37 +0200 |
|---|---|---|
| committer | Werner Koch <wk@gnupg.org> | 2013-05-24 15:52:37 +0200 |
| commit | 9711384f75564a71979e3fb971b5f4cadcf1afef (patch) | |
| tree | ed2caca86567d96e608e510ff715017e7430d789 /cipher/pubkey-internal.h | |
| parent | 0bdf26eea8cdbffefe7e37578f8f896c4f5f5275 (diff) | |
| download | libgcrypt-9711384f75564a71979e3fb971b5f4cadcf1afef.tar.gz | |
ecc: Fix a minor flaw in the generation of K.
* cipher/dsa.c (gen_k): Factor code out to ..
* cipher/dsa-common.c (_gcry_dsa_gen_k): new file and function. Add
arg security_level and re-indent a bit.
* cipher/ecc.c (gen_k): Remove and change callers to _gcry_dsa_gen_k.
* cipher/dsa.c: Include pubkey-internal.
* cipher/Makefile.am (libcipher_la_SOURCES): Add dsa-common.c
--
The ECDSA code used the simple $k = k \bmod p$ method which introduces
a small bias. We now use the bias free method we have always used
with DSA.
Signed-off-by: Werner Koch <wk@gnupg.org>
Diffstat (limited to 'cipher/pubkey-internal.h')
| -rw-r--r-- | cipher/pubkey-internal.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/cipher/pubkey-internal.h b/cipher/pubkey-internal.h index 0ca17a50..ae7e77b0 100644 --- a/cipher/pubkey-internal.h +++ b/cipher/pubkey-internal.h @@ -20,6 +20,9 @@ #ifndef GCRY_PUBKEY_INTERNAL_H #define GCRY_PUBKEY_INTERNAL_H +/*-- dsa-common.h --*/ +gcry_mpi_t _gcry_dsa_gen_k (gcry_mpi_t q, int security_level); + /*-- ecc.c --*/ gpg_err_code_t _gcry_pk_ecc_get_sexp (gcry_sexp_t *r_sexp, int mode, |