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Diffstat (limited to 'ed25519/ed25519_fpga_curve.h')
| -rw-r--r-- | ed25519/ed25519_fpga_curve.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/ed25519/ed25519_fpga_curve.h b/ed25519/ed25519_fpga_curve.h new file mode 100644 index 0000000..3a16bb6 --- /dev/null +++ b/ed25519/ed25519_fpga_curve.h @@ -0,0 +1,118 @@ +//------------------------------------------------------------------------------ +// +// ed25519_fpga_curve.h +// ------------------------------------------------ +// Elliptic curve arithmetic procedures for Ed25519 +// +// Authors: Pavel Shatov +// +// Copyright (c) 2018 NORDUnet A/S +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// - Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// +// - Redistributions in binary form must reproduce the above copyright notice, +// this list of conditions and the following disclaimer in the documentation +// and/or other materials provided with the distribution. +// +// - Neither the name of the NORDUnet nor the names of its contributors may be +// used to endorse or promote products derived from this software without +// specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE +// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +//------------------------------------------------------------------------------ + + +//------------------------------------------------------------------------------ +// Ed25519 Parameters +//------------------------------------------------------------------------------ + +/* x-coordinate of the base point */ +#define ED25519_G_X_INIT {0x216936d3, 0xcd6e53fe, 0xc0a4e231, 0xfdd6dc5c, \ + 0x692cc760, 0x9525a7b2, 0xc9562d60, 0x8f25d51a} + +/* y-coordinate of the base point */ +#define ED25519_G_Y_INIT {0x66666666, 0x66666666, 0x66666666, 0x66666666, \ + 0x66666666, 0x66666666, 0x66666666, 0x66666658} + +/* z-coordinate of the base point */ +#define ED25519_G_Z_INIT {0x00000000, 0x00000000, 0x00000000, 0x00000000, \ + 0x00000000, 0x00000000, 0x00000000, 0x00000001} + +/* t-coordinate of the base point */ +#define ED25519_G_T_INIT {0x67875f0f, 0xd78b7665, 0x66ea4e8e, 0x64abe37d, \ + 0x20f09f80, 0x775152f5, 0x6dde8ab3, 0xa5b7dda3} + + +//------------------------------------------------------------------------------ +// Globals +//------------------------------------------------------------------------------ +extern FPGA_BUFFER ED25519_G_X; // the base point +extern FPGA_BUFFER ED25519_G_Y; // +extern FPGA_BUFFER ED25519_G_Z; // +extern FPGA_BUFFER ED25519_G_T; // + + + +//------------------------------------------------------------------------------ +// Implementation switch +//------------------------------------------------------------------------------ +#ifdef USE_MICROCODE +#define fpga_curve_ed25519_base_scalar_multiply fpga_curve_ed25519_base_scalar_multiply_microcode +#else +#define fpga_curve_ed25519_base_scalar_multiply fpga_curve_ed25519_base_scalar_multiply_abstract +#endif + + +//------------------------------------------------------------------------------ +// Prototypes +//------------------------------------------------------------------------------ +void fpga_curve_ed25519_init (); + +void fpga_curve_ed25519_base_scalar_multiply_abstract (const FPGA_BUFFER *K, FPGA_BUFFER *Q_Y); +void fpga_curve_ed25519_base_scalar_multiply_microcode (const FPGA_BUFFER *K, FPGA_BUFFER *Q_Y); + +void fpga_curve_ed25519_double (const FPGA_BUFFER *P_X, + const FPGA_BUFFER *P_Y, + const FPGA_BUFFER *P_Z, + const FPGA_BUFFER *P_T, + FPGA_BUFFER *Q_X, + FPGA_BUFFER *Q_Y, + FPGA_BUFFER *Q_Z, + FPGA_BUFFER *Q_T); + +void fpga_curve_ed25519_add (const FPGA_BUFFER *P_X, + const FPGA_BUFFER *P_Y, + const FPGA_BUFFER *P_Z, + const FPGA_BUFFER *P_T, + const FPGA_BUFFER *Q_X, + const FPGA_BUFFER *Q_Y, + const FPGA_BUFFER *Q_Z, + const FPGA_BUFFER *Q_T, + FPGA_BUFFER *R_X, + FPGA_BUFFER *R_Y, + FPGA_BUFFER *R_Z, + FPGA_BUFFER *R_T); + +void fpga_curve_ed25519_to_affine (const FPGA_BUFFER *P_X, const FPGA_BUFFER *P_Y, + const FPGA_BUFFER *P_Z, + FPGA_BUFFER *Q_X, FPGA_BUFFER *Q_Y); + + +//------------------------------------------------------------------------------ +// End-of-File +//------------------------------------------------------------------------------ |