1 files changed, 73 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/mpi/mp_gf2m-priv.h b/security/nss/lib/freebl/mpi/mp_gf2m-priv.h
new file mode 100644
index 000000000..5be4da4bf
--- /dev/null
+++ b/security/nss/lib/freebl/mpi/mp_gf2m-priv.h
@@ -0,0 +1,73 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _MP_GF2M_PRIV_H_
+#define _MP_GF2M_PRIV_H_
+
+#include "mpi-priv.h"
+
+extern const mp_digit mp_gf2m_sqr_tb[16];
+
+#if defined(MP_USE_UINT_DIGIT)
+#define MP_DIGIT_BITS 32
+/* enable fast divide and mod operations on MP_DIGIT_BITS */
+#define MP_DIGIT_BITS_LOG_2 5
+#define MP_DIGIT_BITS_MASK 0x1f
+#else
+#define MP_DIGIT_BITS 64
+/* enable fast divide and mod operations on MP_DIGIT_BITS */
+#define MP_DIGIT_BITS_LOG_2 6
+#define MP_DIGIT_BITS_MASK 0x3f
+#endif
+
+/* Platform-specific macros for fast binary polynomial squaring. */
+#if MP_DIGIT_BITS == 32
+#define gf2m_SQR1(w)                                                                \
+    mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 16 | \
+        mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF]
+#define gf2m_SQR0(w)                                                               \
+    mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 | \
+        mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w)&0xF]
+#else
+#define gf2m_SQR1(w)                                                                    \
+    mp_gf2m_sqr_tb[(w) >> 60 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 56 & 0xF] << 48 |     \
+        mp_gf2m_sqr_tb[(w) >> 52 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 48 & 0xF] << 32 | \
+        mp_gf2m_sqr_tb[(w) >> 44 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 40 & 0xF] << 16 | \
+        mp_gf2m_sqr_tb[(w) >> 36 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 32 & 0xF]
+#define gf2m_SQR0(w)                                                                    \
+    mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 48 |     \
+        mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF] << 32 | \
+        mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 |  \
+        mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w)&0xF]
+#endif
+
+/* Multiply two binary polynomials mp_digits a, b.
+ * Result is a polynomial with degree < 2 * MP_DIGIT_BITS - 1.
+ * Output in two mp_digits rh, rl.
+ */
+void s_bmul_1x1(mp_digit *rh, mp_digit *rl, const mp_digit a, const mp_digit b);
+
+/* Compute xor-multiply of two binary polynomials  (a1, a0) x (b1, b0)
+ * result is a binary polynomial in 4 mp_digits r[4].
+ * The caller MUST ensure that r has the right amount of space allocated.
+ */
+void s_bmul_2x2(mp_digit *r, const mp_digit a1, const mp_digit a0, const mp_digit b1,
+                const mp_digit b0);
+
+/* Compute xor-multiply of two binary polynomials  (a2, a1, a0) x (b2, b1, b0)
+ * result is a binary polynomial in 6 mp_digits r[6].
+ * The caller MUST ensure that r has the right amount of space allocated.
+ */
+void s_bmul_3x3(mp_digit *r, const mp_digit a2, const mp_digit a1, const mp_digit a0,
+                const mp_digit b2, const mp_digit b1, const mp_digit b0);
+
+/* Compute xor-multiply of two binary polynomials  (a3, a2, a1, a0) x (b3, b2, b1, b0)
+ * result is a binary polynomial in 8 mp_digits r[8].
+ * The caller MUST ensure that r has the right amount of space allocated.
+ */
+void s_bmul_4x4(mp_digit *r, const mp_digit a3, const mp_digit a2, const mp_digit a1,
+                const mp_digit a0, const mp_digit b3, const mp_digit b2, const mp_digit b1,
+                const mp_digit b0);
+
+#endif /* _MP_GF2M_PRIV_H_ */