diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..2861792
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+/.gitattributes export-ignore
+/.gitignore     export-ignore
+
+/**             export-subst
diff --git a/bn_error.c b/bn_error.c
index 3abf1a7..0d77411 100644
--- a/bn_error.c
+++ b/bn_error.c
@@ -42,6 +42,6 @@ const char *mp_error_to_string(int code)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_fast_mp_invmod.c b/bn_fast_mp_invmod.c
index aa41098..12f42de 100644
--- a/bn_fast_mp_invmod.c
+++ b/bn_fast_mp_invmod.c
@@ -143,6 +143,6 @@ LBL_ERR:mp_clear_multi (&x, &y, &u, &v, &B, &D, NULL);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_fast_mp_montgomery_reduce.c b/bn_fast_mp_montgomery_reduce.c
index a63839d..16d5ff7 100644
--- a/bn_fast_mp_montgomery_reduce.c
+++ b/bn_fast_mp_montgomery_reduce.c
@@ -167,6 +167,6 @@ int fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_fast_s_mp_mul_digs.c b/bn_fast_s_mp_mul_digs.c
index acd13b4..a1015af 100644
--- a/bn_fast_s_mp_mul_digs.c
+++ b/bn_fast_s_mp_mul_digs.c
@@ -102,6 +102,6 @@ int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_fast_s_mp_mul_high_digs.c b/bn_fast_s_mp_mul_high_digs.c
index b96cf60..08f0355 100644
--- a/bn_fast_s_mp_mul_high_digs.c
+++ b/bn_fast_s_mp_mul_high_digs.c
@@ -93,6 +93,6 @@ int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_fast_s_mp_sqr.c b/bn_fast_s_mp_sqr.c
index 775c76f..f435af9 100644
--- a/bn_fast_s_mp_sqr.c
+++ b/bn_fast_s_mp_sqr.c
@@ -109,6 +109,6 @@ int fast_s_mp_sqr (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_2expt.c b/bn_mp_2expt.c
index 2845814..989bb9f 100644
--- a/bn_mp_2expt.c
+++ b/bn_mp_2expt.c
@@ -43,6 +43,6 @@ mp_2expt (mp_int * a, int b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_abs.c b/bn_mp_abs.c
index cc9c3db..e7c5e25 100644
--- a/bn_mp_abs.c
+++ b/bn_mp_abs.c
@@ -38,6 +38,6 @@ mp_abs (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_add.c b/bn_mp_add.c
index 236fc75..bdb166f 100644
--- a/bn_mp_add.c
+++ b/bn_mp_add.c
@@ -48,6 +48,6 @@ int mp_add (mp_int * a, mp_int * b, mp_int * c)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_add_d.c b/bn_mp_add_d.c
index 21b0e1d..fd1a186 100644
--- a/bn_mp_add_d.c
+++ b/bn_mp_add_d.c
@@ -107,6 +107,6 @@ mp_add_d (mp_int * a, mp_digit b, mp_int * c)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_addmod.c b/bn_mp_addmod.c
index 825c928..dc06788 100644
--- a/bn_mp_addmod.c
+++ b/bn_mp_addmod.c
@@ -36,6 +36,6 @@ mp_addmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_and.c b/bn_mp_and.c
index 3b6b03e..53008a5 100644
--- a/bn_mp_and.c
+++ b/bn_mp_and.c
@@ -52,6 +52,6 @@ mp_and (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_clamp.c b/bn_mp_clamp.c
index d4fb70d..2c0a1a6 100644
--- a/bn_mp_clamp.c
+++ b/bn_mp_clamp.c
@@ -39,6 +39,6 @@ mp_clamp (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_clear.c b/bn_mp_clear.c
index 17ef9d5..97f3db0 100644
--- a/bn_mp_clear.c
+++ b/bn_mp_clear.c
@@ -39,6 +39,6 @@ mp_clear (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_clear_multi.c b/bn_mp_clear_multi.c
index 441a200..bd4b232 100644
--- a/bn_mp_clear_multi.c
+++ b/bn_mp_clear_multi.c
@@ -29,6 +29,6 @@ void mp_clear_multi(mp_int *mp, ...)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_cmp.c b/bn_mp_cmp.c
index 74a98fe..e757ddf 100644
--- a/bn_mp_cmp.c
+++ b/bn_mp_cmp.c
@@ -38,6 +38,6 @@ mp_cmp (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_cmp_d.c b/bn_mp_cmp_d.c
index 28a53ce..3f5ebae 100644
--- a/bn_mp_cmp_d.c
+++ b/bn_mp_cmp_d.c
@@ -39,6 +39,6 @@ int mp_cmp_d(mp_int * a, mp_digit b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_cmp_mag.c b/bn_mp_cmp_mag.c
index f72830f..7ceda97 100644
--- a/bn_mp_cmp_mag.c
+++ b/bn_mp_cmp_mag.c
@@ -50,6 +50,6 @@ int mp_cmp_mag (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_cnt_lsb.c b/bn_mp_cnt_lsb.c
index 9d7eef8..bf201b5 100644
--- a/bn_mp_cnt_lsb.c
+++ b/bn_mp_cnt_lsb.c
@@ -48,6 +48,6 @@ int mp_cnt_lsb(mp_int *a)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_copy.c b/bn_mp_copy.c
index 69e9464..84e839e 100644
--- a/bn_mp_copy.c
+++ b/bn_mp_copy.c
@@ -63,6 +63,6 @@ mp_copy (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_count_bits.c b/bn_mp_count_bits.c
index 74b59b6..ff558eb 100644
--- a/bn_mp_count_bits.c
+++ b/bn_mp_count_bits.c
@@ -40,6 +40,6 @@ mp_count_bits (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_div.c b/bn_mp_div.c
index 3ca5d7f..0890e65 100644
--- a/bn_mp_div.c
+++ b/bn_mp_div.c
@@ -290,6 +290,6 @@ LBL_Q:mp_clear (&q);
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_div_2.c b/bn_mp_div_2.c
index d2a213f..2b5bb49 100644
--- a/bn_mp_div_2.c
+++ b/bn_mp_div_2.c
@@ -63,6 +63,6 @@ int mp_div_2(mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_div_2d.c b/bn_mp_div_2d.c
index 6e53c37..635d374 100644
--- a/bn_mp_div_2d.c
+++ b/bn_mp_div_2d.c
@@ -81,6 +81,6 @@ int mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_div_3.c b/bn_mp_div_3.c
index c2b76fb..e8504ea 100644
--- a/bn_mp_div_3.c
+++ b/bn_mp_div_3.c
@@ -74,6 +74,6 @@ mp_div_3 (mp_int * a, mp_int *c, mp_digit * d)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_div_d.c b/bn_mp_div_d.c
index 4df1d36..a5dbc59 100644
--- a/bn_mp_div_d.c
+++ b/bn_mp_div_d.c
@@ -110,6 +110,6 @@ int mp_div_d (mp_int * a, mp_digit b, mp_int * c, mp_digit * d)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_dr_is_modulus.c b/bn_mp_dr_is_modulus.c
index 599d929..ced330c 100644
--- a/bn_mp_dr_is_modulus.c
+++ b/bn_mp_dr_is_modulus.c
@@ -38,6 +38,6 @@ int mp_dr_is_modulus(mp_int *a)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_dr_reduce.c b/bn_mp_dr_reduce.c
index 2273c79..c85ee77 100644
--- a/bn_mp_dr_reduce.c
+++ b/bn_mp_dr_reduce.c
@@ -91,6 +91,6 @@ top:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_dr_setup.c b/bn_mp_dr_setup.c
index 1bccb2b..b0d4a14 100644
--- a/bn_mp_dr_setup.c
+++ b/bn_mp_dr_setup.c
@@ -27,6 +27,6 @@ void mp_dr_setup(mp_int *a, mp_digit *d)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_exch.c b/bn_mp_exch.c
index 634193b..fc26bae 100644
--- a/bn_mp_exch.c
+++ b/bn_mp_exch.c
@@ -29,6 +29,6 @@ mp_exch (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_export.c b/bn_mp_export.c
index 2455fc5..e8dc244 100644
--- a/bn_mp_export.c
+++ b/bn_mp_export.c
@@ -83,6 +83,6 @@ int mp_export(void* rop, size_t* countp, int order, size_t size,
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_expt_d.c b/bn_mp_expt_d.c
index 61c5a1d..a311926 100644
--- a/bn_mp_expt_d.c
+++ b/bn_mp_expt_d.c
@@ -23,6 +23,6 @@ int mp_expt_d (mp_int * a, mp_digit b, mp_int * c)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_expt_d_ex.c b/bn_mp_expt_d_ex.c
index 649d224..c361b27 100644
--- a/bn_mp_expt_d_ex.c
+++ b/bn_mp_expt_d_ex.c
@@ -78,6 +78,6 @@ int mp_expt_d_ex (mp_int * a, mp_digit b, mp_int * c, int fast)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_exptmod.c b/bn_mp_exptmod.c
index 0973e44..25c389d 100644
--- a/bn_mp_exptmod.c
+++ b/bn_mp_exptmod.c
@@ -107,6 +107,6 @@ int mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_exptmod_fast.c b/bn_mp_exptmod_fast.c
index 33e7643..5e5c7f2 100644
--- a/bn_mp_exptmod_fast.c
+++ b/bn_mp_exptmod_fast.c
@@ -316,6 +316,6 @@ LBL_M:
 #endif
 
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_exteuclid.c b/bn_mp_exteuclid.c
index 167a0a3..3c9612e 100644
--- a/bn_mp_exteuclid.c
+++ b/bn_mp_exteuclid.c
@@ -78,6 +78,6 @@ LBL_ERR:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_fread.c b/bn_mp_fread.c
index b06d988..140721b 100644
--- a/bn_mp_fread.c
+++ b/bn_mp_fread.c
@@ -64,6 +64,6 @@ int mp_fread(mp_int *a, int radix, FILE *stream)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_fwrite.c b/bn_mp_fwrite.c
index d7b2ff2..23b5f64 100644
--- a/bn_mp_fwrite.c
+++ b/bn_mp_fwrite.c
@@ -49,6 +49,6 @@ int mp_fwrite(mp_int *a, int radix, FILE *stream)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_gcd.c b/bn_mp_gcd.c
index 16acfd9..b0be8fb 100644
--- a/bn_mp_gcd.c
+++ b/bn_mp_gcd.c
@@ -100,6 +100,6 @@ LBL_U:mp_clear (&v);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_get_int.c b/bn_mp_get_int.c
index 99fb850..5c820f8 100644
--- a/bn_mp_get_int.c
+++ b/bn_mp_get_int.c
@@ -40,6 +40,6 @@ unsigned long mp_get_int(mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_grow.c b/bn_mp_grow.c
index cbdcfed..74e07b1 100644
--- a/bn_mp_grow.c
+++ b/bn_mp_grow.c
@@ -52,6 +52,6 @@ int mp_grow (mp_int * a, int size)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_import.c b/bn_mp_import.c
index ca2a5e9..2e26261 100644
--- a/bn_mp_import.c
+++ b/bn_mp_import.c
@@ -68,6 +68,6 @@ int mp_import(mp_int* rop, size_t count, int order, size_t size,
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_init.c b/bn_mp_init.c
index 7a57730..ee374ae 100644
--- a/bn_mp_init.c
+++ b/bn_mp_init.c
@@ -41,6 +41,6 @@ int mp_init (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_init_copy.c b/bn_mp_init_copy.c
index 76c5e42..37a57ec 100644
--- a/bn_mp_init_copy.c
+++ b/bn_mp_init_copy.c
@@ -32,6 +32,6 @@ int mp_init_copy (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_init_multi.c b/bn_mp_init_multi.c
index 5f93390..73d6a0f 100644
--- a/bn_mp_init_multi.c
+++ b/bn_mp_init_multi.c
@@ -51,6 +51,6 @@ int mp_init_multi(mp_int *mp, ...)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_init_set.c b/bn_mp_init_set.c
index c337e50..ed4955c 100644
--- a/bn_mp_init_set.c
+++ b/bn_mp_init_set.c
@@ -27,6 +27,6 @@ int mp_init_set (mp_int * a, mp_digit b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_init_set_int.c b/bn_mp_init_set_int.c
index c88f14e..1bc1942 100644
--- a/bn_mp_init_set_int.c
+++ b/bn_mp_init_set_int.c
@@ -26,6 +26,6 @@ int mp_init_set_int (mp_int * a, unsigned long b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_init_size.c b/bn_mp_init_size.c
index e1d1b51..4446773 100644
--- a/bn_mp_init_size.c
+++ b/bn_mp_init_size.c
@@ -43,6 +43,6 @@ int mp_init_size (mp_int * a, int size)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_invmod.c b/bn_mp_invmod.c
index 820635d..36011d0 100644
--- a/bn_mp_invmod.c
+++ b/bn_mp_invmod.c
@@ -38,6 +38,6 @@ int mp_invmod (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_invmod_slow.c b/bn_mp_invmod_slow.c
index a21f947..ff0d5ae 100644
--- a/bn_mp_invmod_slow.c
+++ b/bn_mp_invmod_slow.c
@@ -170,6 +170,6 @@ LBL_ERR:mp_clear_multi (&x, &y, &u, &v, &A, &B, &C, &D, NULL);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_is_square.c b/bn_mp_is_square.c
index 9f065ef..dd08d58 100644
--- a/bn_mp_is_square.c
+++ b/bn_mp_is_square.c
@@ -104,6 +104,6 @@ ERR:mp_clear(&t);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_jacobi.c b/bn_mp_jacobi.c
index 3c114e3..5fc8593 100644
--- a/bn_mp_jacobi.c
+++ b/bn_mp_jacobi.c
@@ -112,6 +112,6 @@ LBL_A1:mp_clear (&a1);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_karatsuba_mul.c b/bn_mp_karatsuba_mul.c
index d65e37e..4d982c7 100644
--- a/bn_mp_karatsuba_mul.c
+++ b/bn_mp_karatsuba_mul.c
@@ -162,6 +162,6 @@ ERR:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_karatsuba_sqr.c b/bn_mp_karatsuba_sqr.c
index 739840d..764e85a 100644
--- a/bn_mp_karatsuba_sqr.c
+++ b/bn_mp_karatsuba_sqr.c
@@ -116,6 +116,6 @@ ERR:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_lcm.c b/bn_mp_lcm.c
index 3bff571..512e8ec 100644
--- a/bn_mp_lcm.c
+++ b/bn_mp_lcm.c
@@ -55,6 +55,6 @@ LBL_T:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_lshd.c b/bn_mp_lshd.c
index f6f800f..0143e94 100644
--- a/bn_mp_lshd.c
+++ b/bn_mp_lshd.c
@@ -62,6 +62,6 @@ int mp_lshd (mp_int * a, int b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mod.c b/bn_mp_mod.c
index 67b6796..06240a0 100644
--- a/bn_mp_mod.c
+++ b/bn_mp_mod.c
@@ -43,6 +43,6 @@ mp_mod (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mod_2d.c b/bn_mp_mod_2d.c
index 926f810..2bb86da 100644
--- a/bn_mp_mod_2d.c
+++ b/bn_mp_mod_2d.c
@@ -50,6 +50,6 @@ mp_mod_2d (mp_int * a, int b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mod_d.c b/bn_mp_mod_d.c
index d8722f0..bf2ccaa 100644
--- a/bn_mp_mod_d.c
+++ b/bn_mp_mod_d.c
@@ -22,6 +22,6 @@ mp_mod_d (mp_int * a, mp_digit b, mp_digit * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_montgomery_calc_normalization.c b/bn_mp_montgomery_calc_normalization.c
index ea87cbd..679a871 100644
--- a/bn_mp_montgomery_calc_normalization.c
+++ b/bn_mp_montgomery_calc_normalization.c
@@ -54,6 +54,6 @@ int mp_montgomery_calc_normalization (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_montgomery_reduce.c b/bn_mp_montgomery_reduce.c
index af2cc58..05e8bfa 100644
--- a/bn_mp_montgomery_reduce.c
+++ b/bn_mp_montgomery_reduce.c
@@ -113,6 +113,6 @@ mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_montgomery_setup.c b/bn_mp_montgomery_setup.c
index 264a2bd..1c17445 100644
--- a/bn_mp_montgomery_setup.c
+++ b/bn_mp_montgomery_setup.c
@@ -54,6 +54,6 @@ mp_montgomery_setup (mp_int * n, mp_digit * rho)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mul.c b/bn_mp_mul.c
index ea53d5e..cc3b9c8 100644
--- a/bn_mp_mul.c
+++ b/bn_mp_mul.c
@@ -62,6 +62,6 @@ int mp_mul (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mul_2.c b/bn_mp_mul_2.c
index 9c72c7f..d22fd89 100644
--- a/bn_mp_mul_2.c
+++ b/bn_mp_mul_2.c
@@ -77,6 +77,6 @@ int mp_mul_2(mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mul_2d.c b/bn_mp_mul_2d.c
index 9967e46..c00fd7e 100644
--- a/bn_mp_mul_2d.c
+++ b/bn_mp_mul_2d.c
@@ -80,6 +80,6 @@ int mp_mul_2d (mp_int * a, int b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mul_d.c b/bn_mp_mul_d.c
index e77da5d..6954ed3 100644
--- a/bn_mp_mul_d.c
+++ b/bn_mp_mul_d.c
@@ -74,6 +74,6 @@ mp_mul_d (mp_int * a, mp_digit b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_mulmod.c b/bn_mp_mulmod.c
index edd8fcb..d7a4d3c 100644
--- a/bn_mp_mulmod.c
+++ b/bn_mp_mulmod.c
@@ -35,6 +35,6 @@ int mp_mulmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_n_root.c b/bn_mp_n_root.c
index a14ee67..f717f17 100644
--- a/bn_mp_n_root.c
+++ b/bn_mp_n_root.c
@@ -25,6 +25,6 @@ int mp_n_root (mp_int * a, mp_digit b, mp_int * c)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_n_root_ex.c b/bn_mp_n_root_ex.c
index 79d1dfb..079b4f3 100644
--- a/bn_mp_n_root_ex.c
+++ b/bn_mp_n_root_ex.c
@@ -127,6 +127,6 @@ LBL_T1:mp_clear (&t1);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_neg.c b/bn_mp_neg.c
index ea32e46..d03e92e 100644
--- a/bn_mp_neg.c
+++ b/bn_mp_neg.c
@@ -35,6 +35,6 @@ int mp_neg (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_or.c b/bn_mp_or.c
index b7f2e4f..b9775ce 100644
--- a/bn_mp_or.c
+++ b/bn_mp_or.c
@@ -45,6 +45,6 @@ int mp_or (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_prime_fermat.c b/bn_mp_prime_fermat.c
index 9dc9e85..d99feeb 100644
--- a/bn_mp_prime_fermat.c
+++ b/bn_mp_prime_fermat.c
@@ -57,6 +57,6 @@ LBL_T:mp_clear (&t);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_prime_is_divisible.c b/bn_mp_prime_is_divisible.c
index 5854f08..eea4a27 100644
--- a/bn_mp_prime_is_divisible.c
+++ b/bn_mp_prime_is_divisible.c
@@ -45,6 +45,6 @@ int mp_prime_is_divisible (mp_int * a, int *result)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_prime_is_prime.c b/bn_mp_prime_is_prime.c
index be5ebe4..3eda4fd 100644
--- a/bn_mp_prime_is_prime.c
+++ b/bn_mp_prime_is_prime.c
@@ -78,6 +78,6 @@ LBL_B:mp_clear (&b);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_prime_miller_rabin.c b/bn_mp_prime_miller_rabin.c
index 7b5c8d2..7de0634 100644
--- a/bn_mp_prime_miller_rabin.c
+++ b/bn_mp_prime_miller_rabin.c
@@ -98,6 +98,6 @@ LBL_N1:mp_clear (&n1);
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_prime_next_prime.c b/bn_mp_prime_next_prime.c
index 9951dc3..7a32d9b 100644
--- a/bn_mp_prime_next_prime.c
+++ b/bn_mp_prime_next_prime.c
@@ -165,6 +165,6 @@ LBL_ERR:
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_prime_rabin_miller_trials.c b/bn_mp_prime_rabin_miller_trials.c
index bca4229..378ceb2 100644
--- a/bn_mp_prime_rabin_miller_trials.c
+++ b/bn_mp_prime_rabin_miller_trials.c
@@ -47,6 +47,6 @@ int mp_prime_rabin_miller_trials(int size)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_prime_random_ex.c b/bn_mp_prime_random_ex.c
index 1efc4fc..cf5272e 100644
--- a/bn_mp_prime_random_ex.c
+++ b/bn_mp_prime_random_ex.c
@@ -119,6 +119,6 @@ error:
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_radix_size.c b/bn_mp_radix_size.c
index e5d7772..cb0c134 100644
--- a/bn_mp_radix_size.c
+++ b/bn_mp_radix_size.c
@@ -73,6 +73,6 @@ int mp_radix_size (mp_int * a, int radix, int *size)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_radix_smap.c b/bn_mp_radix_smap.c
index d1c75ad..4c6e57c 100644
--- a/bn_mp_radix_smap.c
+++ b/bn_mp_radix_smap.c
@@ -19,6 +19,6 @@
 const char *mp_s_rmap = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/";
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_rand.c b/bn_mp_rand.c
index 608a663..93e255a 100644
--- a/bn_mp_rand.c
+++ b/bn_mp_rand.c
@@ -75,6 +75,6 @@ mp_rand (mp_int * a, int digits)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_read_radix.c b/bn_mp_read_radix.c
index 5c9eb5e..5decdeb 100644
--- a/bn_mp_read_radix.c
+++ b/bn_mp_read_radix.c
@@ -80,6 +80,6 @@ int mp_read_radix (mp_int * a, const char *str, int radix)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_read_signed_bin.c b/bn_mp_read_signed_bin.c
index a4d4760..363e11f 100644
--- a/bn_mp_read_signed_bin.c
+++ b/bn_mp_read_signed_bin.c
@@ -36,6 +36,6 @@ int mp_read_signed_bin (mp_int * a, const unsigned char *b, int c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_read_unsigned_bin.c b/bn_mp_read_unsigned_bin.c
index e8e5df8..1a50b58 100644
--- a/bn_mp_read_unsigned_bin.c
+++ b/bn_mp_read_unsigned_bin.c
@@ -50,6 +50,6 @@ int mp_read_unsigned_bin (mp_int * a, const unsigned char *b, int c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce.c b/bn_mp_reduce.c
index e2c3a58..367383f 100644
--- a/bn_mp_reduce.c
+++ b/bn_mp_reduce.c
@@ -95,6 +95,6 @@ CLEANUP:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce_2k.c b/bn_mp_reduce_2k.c
index 2876a75..6bc96d1 100644
--- a/bn_mp_reduce_2k.c
+++ b/bn_mp_reduce_2k.c
@@ -58,6 +58,6 @@ ERR:
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce_2k_l.c b/bn_mp_reduce_2k_l.c
index 3225214..8e6eeb0 100644
--- a/bn_mp_reduce_2k_l.c
+++ b/bn_mp_reduce_2k_l.c
@@ -59,6 +59,6 @@ ERR:
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce_2k_setup.c b/bn_mp_reduce_2k_setup.c
index 545051e..bf810c0 100644
--- a/bn_mp_reduce_2k_setup.c
+++ b/bn_mp_reduce_2k_setup.c
@@ -42,6 +42,6 @@ int mp_reduce_2k_setup(mp_int *a, mp_digit *d)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce_2k_setup_l.c b/bn_mp_reduce_2k_setup_l.c
index 59132dd..56d1ba8 100644
--- a/bn_mp_reduce_2k_setup_l.c
+++ b/bn_mp_reduce_2k_setup_l.c
@@ -39,6 +39,6 @@ ERR:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce_is_2k.c b/bn_mp_reduce_is_2k.c
index 784947b..0499e83 100644
--- a/bn_mp_reduce_is_2k.c
+++ b/bn_mp_reduce_is_2k.c
@@ -47,6 +47,6 @@ int mp_reduce_is_2k(mp_int *a)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce_is_2k_l.c b/bn_mp_reduce_is_2k_l.c
index c193f39..48b3498 100644
--- a/bn_mp_reduce_is_2k_l.c
+++ b/bn_mp_reduce_is_2k_l.c
@@ -39,6 +39,6 @@ int mp_reduce_is_2k_l(mp_int *a)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_reduce_setup.c b/bn_mp_reduce_setup.c
index f97eed5..8875698 100644
--- a/bn_mp_reduce_setup.c
+++ b/bn_mp_reduce_setup.c
@@ -29,6 +29,6 @@ int mp_reduce_setup (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_rshd.c b/bn_mp_rshd.c
index 77b0f6c..4b598de 100644
--- a/bn_mp_rshd.c
+++ b/bn_mp_rshd.c
@@ -67,6 +67,6 @@ void mp_rshd (mp_int * a, int b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_set.c b/bn_mp_set.c
index cac48ea..dd4de3c 100644
--- a/bn_mp_set.c
+++ b/bn_mp_set.c
@@ -24,6 +24,6 @@ void mp_set (mp_int * a, mp_digit b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_set_int.c b/bn_mp_set_int.c
index 5aa59d5..3aafec9 100644
--- a/bn_mp_set_int.c
+++ b/bn_mp_set_int.c
@@ -43,6 +43,6 @@ int mp_set_int (mp_int * a, unsigned long b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_set_long.c b/bn_mp_set_long.c
index 281fce7..8cbb811 100644
--- a/bn_mp_set_long.c
+++ b/bn_mp_set_long.c
@@ -19,6 +19,6 @@
 MP_SET_XLONG(mp_set_long, unsigned long)
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_set_long_long.c b/bn_mp_set_long_long.c
index 3c4b01a..3566b45 100644
--- a/bn_mp_set_long_long.c
+++ b/bn_mp_set_long_long.c
@@ -19,6 +19,6 @@
 MP_SET_XLONG(mp_set_long_long, unsigned long long)
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_shrink.c b/bn_mp_shrink.c
index 1ad2ede..0712c2b 100644
--- a/bn_mp_shrink.c
+++ b/bn_mp_shrink.c
@@ -36,6 +36,6 @@ int mp_shrink (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_signed_bin_size.c b/bn_mp_signed_bin_size.c
index 0e760a6..0910333 100644
--- a/bn_mp_signed_bin_size.c
+++ b/bn_mp_signed_bin_size.c
@@ -22,6 +22,6 @@ int mp_signed_bin_size (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_sqr.c b/bn_mp_sqr.c
index ad2099b..ffe94e2 100644
--- a/bn_mp_sqr.c
+++ b/bn_mp_sqr.c
@@ -55,6 +55,6 @@ mp_sqr (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_sqrmod.c b/bn_mp_sqrmod.c
index 2f9463d..3b29fbc 100644
--- a/bn_mp_sqrmod.c
+++ b/bn_mp_sqrmod.c
@@ -36,6 +36,6 @@ mp_sqrmod (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_sqrt.c b/bn_mp_sqrt.c
index 4a52f5e..d3b5d62 100644
--- a/bn_mp_sqrt.c
+++ b/bn_mp_sqrt.c
@@ -76,6 +76,6 @@ E2: mp_clear(&t1);
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_sub.c b/bn_mp_sub.c
index 0d616c2..2f73faa 100644
--- a/bn_mp_sub.c
+++ b/bn_mp_sub.c
@@ -54,6 +54,6 @@ mp_sub (mp_int * a, mp_int * b, mp_int * c)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_sub_d.c b/bn_mp_sub_d.c
index f5a932f..5e96030 100644
--- a/bn_mp_sub_d.c
+++ b/bn_mp_sub_d.c
@@ -88,6 +88,6 @@ mp_sub_d (mp_int * a, mp_digit b, mp_int * c)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_submod.c b/bn_mp_submod.c
index 87e0889..138863c 100644
--- a/bn_mp_submod.c
+++ b/bn_mp_submod.c
@@ -37,6 +37,6 @@ mp_submod (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_to_signed_bin.c b/bn_mp_to_signed_bin.c
index e9289ea..c49c87d 100644
--- a/bn_mp_to_signed_bin.c
+++ b/bn_mp_to_signed_bin.c
@@ -28,6 +28,6 @@ int mp_to_signed_bin (mp_int * a, unsigned char *b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_to_signed_bin_n.c b/bn_mp_to_signed_bin_n.c
index d4fe6e6..dc5ec26 100644
--- a/bn_mp_to_signed_bin_n.c
+++ b/bn_mp_to_signed_bin_n.c
@@ -26,6 +26,6 @@ int mp_to_signed_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_to_unsigned_bin.c b/bn_mp_to_unsigned_bin.c
index d3ef46f..d249359 100644
--- a/bn_mp_to_unsigned_bin.c
+++ b/bn_mp_to_unsigned_bin.c
@@ -43,6 +43,6 @@ int mp_to_unsigned_bin (mp_int * a, unsigned char *b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_to_unsigned_bin_n.c b/bn_mp_to_unsigned_bin_n.c
index 2da13cc..f671621 100644
--- a/bn_mp_to_unsigned_bin_n.c
+++ b/bn_mp_to_unsigned_bin_n.c
@@ -26,6 +26,6 @@ int mp_to_unsigned_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_toom_mul.c b/bn_mp_toom_mul.c
index 4731f8f..4a574fc 100644
--- a/bn_mp_toom_mul.c
+++ b/bn_mp_toom_mul.c
@@ -281,6 +281,6 @@ ERR:
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_toom_sqr.c b/bn_mp_toom_sqr.c
index 69b69d4..0a38192 100644
--- a/bn_mp_toom_sqr.c
+++ b/bn_mp_toom_sqr.c
@@ -223,6 +223,6 @@ ERR:
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_toradix.c b/bn_mp_toradix.c
index f04352d..3337765 100644
--- a/bn_mp_toradix.c
+++ b/bn_mp_toradix.c
@@ -70,6 +70,6 @@ int mp_toradix (mp_int * a, char *str, int radix)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_toradix_n.c b/bn_mp_toradix_n.c
index 19b61d7..ae24ada 100644
--- a/bn_mp_toradix_n.c
+++ b/bn_mp_toradix_n.c
@@ -83,6 +83,6 @@ int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_unsigned_bin_size.c b/bn_mp_unsigned_bin_size.c
index 0312625..f46d0ba 100644
--- a/bn_mp_unsigned_bin_size.c
+++ b/bn_mp_unsigned_bin_size.c
@@ -23,6 +23,6 @@ int mp_unsigned_bin_size (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_xor.c b/bn_mp_xor.c
index 3c2ba9e..f51fc8e 100644
--- a/bn_mp_xor.c
+++ b/bn_mp_xor.c
@@ -46,6 +46,6 @@ mp_xor (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_mp_zero.c b/bn_mp_zero.c
index 21365ed..a7d59e4 100644
--- a/bn_mp_zero.c
+++ b/bn_mp_zero.c
@@ -31,6 +31,6 @@ void mp_zero (mp_int * a)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_prime_tab.c b/bn_prime_tab.c
index ae727a4..5252130 100644
--- a/bn_prime_tab.c
+++ b/bn_prime_tab.c
@@ -56,6 +56,6 @@ const mp_digit ltm_prime_tab[] = {
 };
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_reverse.c b/bn_reverse.c
index fc6eb2d..dc87a4e 100644
--- a/bn_reverse.c
+++ b/bn_reverse.c
@@ -34,6 +34,6 @@ bn_reverse (unsigned char *s, int len)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_s_mp_add.c b/bn_s_mp_add.c
index c2ad649..7a100e8 100644
--- a/bn_s_mp_add.c
+++ b/bn_s_mp_add.c
@@ -104,6 +104,6 @@ s_mp_add (mp_int * a, mp_int * b, mp_int * c)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_s_mp_exptmod.c b/bn_s_mp_exptmod.c
index 63e1b1e..ab820d4 100644
--- a/bn_s_mp_exptmod.c
+++ b/bn_s_mp_exptmod.c
@@ -247,6 +247,6 @@ LBL_M:
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_s_mp_mul_digs.c b/bn_s_mp_mul_digs.c
index bd8553d..8f1bf97 100644
--- a/bn_s_mp_mul_digs.c
+++ b/bn_s_mp_mul_digs.c
@@ -85,6 +85,6 @@ int s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_s_mp_mul_high_digs.c b/bn_s_mp_mul_high_digs.c
index 153cea4..031f17b 100644
--- a/bn_s_mp_mul_high_digs.c
+++ b/bn_s_mp_mul_high_digs.c
@@ -76,6 +76,6 @@ s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_s_mp_sqr.c b/bn_s_mp_sqr.c
index 68c95bc..ac0e157 100644
--- a/bn_s_mp_sqr.c
+++ b/bn_s_mp_sqr.c
@@ -79,6 +79,6 @@ int s_mp_sqr (mp_int * a, mp_int * b)
 }
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bn_s_mp_sub.c b/bn_s_mp_sub.c
index c0ea556..8091f4a 100644
--- a/bn_s_mp_sub.c
+++ b/bn_s_mp_sub.c
@@ -84,6 +84,6 @@ s_mp_sub (mp_int * a, mp_int * b, mp_int * c)
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/bncore.c b/bncore.c
index 9552714..e80ec99 100644
--- a/bncore.c
+++ b/bncore.c
@@ -31,6 +31,6 @@ int     KARATSUBA_MUL_CUTOFF = 80,      /* Min. number of digits before Karatsub
         TOOM_SQR_CUTOFF      = 400; 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/demo/demo.c b/demo/demo.c
index 4b871cd..7136a4c 100644
--- a/demo/demo.c
+++ b/demo/demo.c
@@ -1007,6 +1007,6 @@ printf("compare no compare!\n"); return EXIT_FAILURE; }
    return 0;
 }
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/demo/timing.c b/demo/timing.c
index 87224da..2488eb4 100644
--- a/demo/timing.c
+++ b/demo/timing.c
@@ -335,6 +335,6 @@ int main(void)
    return 0;
 }
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/etc/2kprime.c b/etc/2kprime.c
index 9450283..14da57e 100644
--- a/etc/2kprime.c
+++ b/etc/2kprime.c
@@ -79,6 +79,6 @@ int main(void)
             
           
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/etc/drprime.c b/etc/drprime.c
index c7d253f..29d89db 100644
--- a/etc/drprime.c
+++ b/etc/drprime.c
@@ -59,6 +59,6 @@ int main(void)
 }
 
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/etc/mersenne.c b/etc/mersenne.c
index ae6725a..432cec1 100644
--- a/etc/mersenne.c
+++ b/etc/mersenne.c
@@ -139,6 +139,6 @@ main (void)
   return 0;
 }
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/etc/mont.c b/etc/mont.c
index 45cf3fd..ac14e06 100644
--- a/etc/mont.c
+++ b/etc/mont.c
@@ -45,6 +45,6 @@ int main(void)
 
 
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/etc/pprime.c b/etc/pprime.c
index 9f94423..0313948 100644
--- a/etc/pprime.c
+++ b/etc/pprime.c
@@ -395,6 +395,6 @@ main (void)
   return 0;
 }
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/etc/tune.c b/etc/tune.c
index 0208b60..a3f1c47 100644
--- a/etc/tune.c
+++ b/etc/tune.c
@@ -141,6 +141,6 @@ main (void)
   return 0;
 }
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/filter.pl b/filter.pl
index 49f050e..ad980e5 100755
--- a/filter.pl
+++ b/filter.pl
@@ -29,6 +29,6 @@ while (<$src>) {
 close $tmp;
 close $src;
 
-# $Source$
-# $Revision$
-# $Date$
+# ref:         $Format:%D$
+# git commit:  $Format:%H$
+# commit time: $Format:%ai$
diff --git a/genlist.sh b/genlist.sh
index 1f53b66..22048cc 100755
--- a/genlist.sh
+++ b/genlist.sh
@@ -3,6 +3,6 @@
 export a=`find . -maxdepth 1 -type f -name '*.c' | sort | sed -e 'sE\./EE' | sed -e 's/\.c/\.o/' | xargs`
 perl ./parsenames.pl OBJECTS "$a"
 
-# $Source$
-# $Revision$
-# $Date$
+# ref:         $Format:%D$
+# git commit:  $Format:%H$
+# commit time: $Format:%ai$
diff --git a/parsenames.pl b/parsenames.pl
index fd21b10..6703971 100755
--- a/parsenames.pl
+++ b/parsenames.pl
@@ -23,6 +23,6 @@ foreach my $obj (@a) {
 
 print "\n\n";
 
-# $Source$
-# $Revision$
-# $Date$
+# ref:         $Format:%D$
+# git commit:  $Format:%H$
+# commit time: $Format:%ai$
diff --git a/tommath.h b/tommath.h
index 84eccfb..7dda0a5 100644
--- a/tommath.h
+++ b/tommath.h
@@ -565,6 +565,6 @@ int mp_fwrite(mp_int *a, int radix, FILE *stream);
 #endif
 
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/tommath_private.h b/tommath_private.h
index 0e0059b..aeda684 100644
--- a/tommath_private.h
+++ b/tommath_private.h
@@ -118,6 +118,6 @@ int func_name (mp_int * a, type b)                       \
 #endif
 
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/tommath_superclass.h b/tommath_superclass.h
index 1b26841..a2f4d93 100644
--- a/tommath_superclass.h
+++ b/tommath_superclass.h
@@ -71,6 +71,6 @@
 
 #endif
 
-/* $Source$ */
-/* $Revision$ */
-/* $Date$ */
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */
diff --git a/updatemakes.sh b/updatemakes.sh
index 54c3b84..0f9520e 100755
--- a/updatemakes.sh
+++ b/updatemakes.sh
@@ -28,6 +28,6 @@ rm -f tmp.delme
 
 rm -f tmplist
 
-# $Source$
-# $Revision$
-# $Date$
+# ref:         $Format:%D$
+# git commit:  $Format:%H$
+# commit time: $Format:%ai$