diff options
author | Jason Gross <jgross@mit.edu> | 2017-10-06 00:50:17 -0400 |
---|---|---|
committer | Jason Gross <jasongross9@gmail.com> | 2017-10-18 23:01:29 -0400 |
commit | a3a6eb12e7652e40b573372217f0771368ad50cb (patch) | |
tree | 9e53155edb1132aea0606d5504168e8b7015f9ca /src/Specific/X25519/C64/parameters.json | |
parent | ffa0731cc244091460586b46bf4817e5a918ba49 (diff) |
Generate C64 from python script and json
Diffstat (limited to 'src/Specific/X25519/C64/parameters.json')
-rw-r--r-- | src/Specific/X25519/C64/parameters.json | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/Specific/X25519/C64/parameters.json b/src/Specific/X25519/C64/parameters.json new file mode 100644 index 000000000..b03a8cee5 --- /dev/null +++ b/src/Specific/X25519/C64/parameters.json @@ -0,0 +1,75 @@ +{ + "modulus" : "2^255-19", + "base" : "51", + "operations" : ["femul", "fesquare", "ladderstep", "freeze"], + "sz" : "5", + "bitwidth" : "64", + "s" : "2^255", + "c" : [["1", "19"]], + "carry_chain1" : "default", + "carry_chain2" : ["0", "1"], + "a24" : "121665", + "coef_div_modulus" : "2", + "mul_header" : "(* Micro-optimized form from curve25519-donna-c64 by Adam Langley (Google) and Daniel Bernstein. See <https://github.com/agl/curve25519-donna/blob/master/LICENSE.md>. *)", + "mul_code" + : + " + uint128_t t[5]; + limb r0,r1,r2,r3,r4,s0,s1,s2,s3,s4,c; + + r0 = in[0]; + r1 = in[1]; + r2 = in[2]; + r3 = in[3]; + r4 = in[4]; + + s0 = in2[0]; + s1 = in2[1]; + s2 = in2[2]; + s3 = in2[3]; + s4 = in2[4]; + + t[0] = ((uint128_t) r0) * s0; + t[1] = ((uint128_t) r0) * s1 + ((uint128_t) r1) * s0; + t[2] = ((uint128_t) r0) * s2 + ((uint128_t) r2) * s0 + ((uint128_t) r1) * s1; + t[3] = ((uint128_t) r0) * s3 + ((uint128_t) r3) * s0 + ((uint128_t) r1) * s2 + ((uint128_t) r2) * s1; + t[4] = ((uint128_t) r0) * s4 + ((uint128_t) r4) * s0 + ((uint128_t) r3) * s1 + ((uint128_t) r1) * s3 + ((uint128_t) r2) * s2; + + r4 *= 19; + r1 *= 19; + r2 *= 19; + r3 *= 19; + + t[0] += ((uint128_t) r4) * s1 + ((uint128_t) r1) * s4 + ((uint128_t) r2) * s3 + ((uint128_t) r3) * s2; + t[1] += ((uint128_t) r4) * s2 + ((uint128_t) r2) * s4 + ((uint128_t) r3) * s3; + t[2] += ((uint128_t) r4) * s3 + ((uint128_t) r3) * s4; + t[3] += ((uint128_t) r4) * s4; +", + "square_header" : "(* Micro-optimized form from curve25519-donna-c64 by Adam Langley (Google) and Daniel Bernstein. See <https://github.com/agl/curve25519-donna/blob/master/LICENSE.md>. *)", + "square_code" + : + " + uint128_t t[5]; + limb r0,r1,r2,r3,r4,c; + limb d0,d1,d2,d4,d419; + + r0 = in[0]; + r1 = in[1]; + r2 = in[2]; + r3 = in[3]; + r4 = in[4]; + + do { + d0 = r0 * 2; + d1 = r1 * 2; + d2 = r2 * 2 * 19; + d419 = r4 * 19; + d4 = d419 * 2; + + t[0] = ((uint128_t) r0) * r0 + ((uint128_t) d4) * r1 + (((uint128_t) d2) * (r3 )); + t[1] = ((uint128_t) d0) * r1 + ((uint128_t) d4) * r2 + (((uint128_t) r3) * (r3 * 19)); + t[2] = ((uint128_t) d0) * r2 + ((uint128_t) r1) * r1 + (((uint128_t) d4) * (r3 )); + t[3] = ((uint128_t) d0) * r3 + ((uint128_t) d1) * r2 + (((uint128_t) r4) * (d419 )); + t[4] = ((uint128_t) d0) * r4 + ((uint128_t) d1) * r3 + (((uint128_t) r2) * (r2 )); +" +} |