[git] GCRYPT - branch, master, updated. libgcrypt-1.5.0-282-g1d85452

[by Werner Koch]

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- Log -----------------------------------------------------------------
commit 1d85452412b65e7976bc94969fc513ff6b880ed8
Author: Werner Koch <wk at gnupg.org>
Date:   Mon Sep 30 21:14:11 2013 +0200

    ecc: Use faster b parameter for Ed25519.
    
    * cipher/ecc-curves.c (domain_parms): Replace b.
    * tests/t-mpi-point.c (test_curve): Ditto.
    --
    
    This change has been suggested by NIIBE Yutaka:
    
      Here,
    
        0x98412DFC9311D490018C7338BF8688861767FF8FF5B2BEBE27548A14B235EC8FEDA4
    
      is: (121666^-1 mod q)*121665.
    
      (121666^-1) * 121665 mod q is:
    
        0x2DFC9311D490018C7338BF8688861767FF8FF5B2BEBE27548A14B235ECA6874A
    
      While it works for both, I think that shorter is better.
    
    Signed-off-by: Werner Koch <wk at gnupg.org>

diff --git a/cipher/ecc-curves.c b/cipher/ecc-curves.c
index 7447340..15888a8 100644
--- a/cipher/ecc-curves.c
+++ b/cipher/ecc-curves.c
@@ -103,7 +103,7 @@ static const ecc_domain_parms_t domain_parms[] =
       MPI_EC_TWISTEDEDWARDS, ECC_DIALECT_ED25519,
       "0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFED",
       "-0x01",
-      "-0x98412DFC9311D490018C7338BF8688861767FF8FF5B2BEBE27548A14B235EC8FEDA4",
+      "-0x2DFC9311D490018C7338BF8688861767FF8FF5B2BEBE27548A14B235ECA6874A",
       "0x1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED",
       "0x216936D3CD6E53FEC0A4E231FDD6DC5C692CC7609525A7B2C9562D608F25D51A",
       "0x6666666666666666666666666666666666666666666666666666666666666658"
diff --git a/tests/t-mpi-point.c b/tests/t-mpi-point.c
index 5a0b311..a345cbc 100644
--- a/tests/t-mpi-point.c
+++ b/tests/t-mpi-point.c
@@ -125,7 +125,7 @@ static struct
       "Ed25519",
       "0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFED",
       "-0x01",
-      "-0x98412DFC9311D490018C7338BF8688861767FF8FF5B2BEBE27548A14B235EC8FEDA4",
+      "-0x2DFC9311D490018C7338BF8688861767FF8FF5B2BEBE27548A14B235ECA6874A",
       "0x1000000000000000000000000000000014DEF9DEA2F79CD65812631A5CF5D3ED",
       "0x216936D3CD6E53FEC0A4E231FDD6DC5C692CC7609525A7B2C9562D608F25D51A",
       "0x6666666666666666666666666666666666666666666666666666666666666658"

-----------------------------------------------------------------------

Summary of changes:
 cipher/ecc-curves.c |    2 +-
 tests/t-mpi-point.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)


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