diff options
Diffstat (limited to 'security/nss/lib/freebl/verified/Hacl_Poly1305_64.c')
| -rw-r--r-- | security/nss/lib/freebl/verified/Hacl_Poly1305_64.c | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/verified/Hacl_Poly1305_64.c b/security/nss/lib/freebl/verified/Hacl_Poly1305_64.c new file mode 100644 index 0000000000..984031ae21 --- /dev/null +++ b/security/nss/lib/freebl/verified/Hacl_Poly1305_64.c @@ -0,0 +1,485 @@ +/* Copyright 2016-2017 INRIA and Microsoft Corporation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "Hacl_Poly1305_64.h" + +inline static void +Hacl_Bignum_Modulo_reduce(uint64_t *b) +{ + uint64_t b0 = b[0U]; + b[0U] = (b0 << (uint32_t)4U) + (b0 << (uint32_t)2U); +} + +inline static void +Hacl_Bignum_Modulo_carry_top(uint64_t *b) +{ + uint64_t b2 = b[2U]; + uint64_t b0 = b[0U]; + uint64_t b2_42 = b2 >> (uint32_t)42U; + b[2U] = b2 & (uint64_t)0x3ffffffffffU; + b[0U] = (b2_42 << (uint32_t)2U) + b2_42 + b0; +} + +inline static void +Hacl_Bignum_Modulo_carry_top_wide(FStar_UInt128_t *b) +{ + FStar_UInt128_t b2 = b[2U]; + FStar_UInt128_t b0 = b[0U]; + FStar_UInt128_t + b2_ = FStar_UInt128_logand(b2, FStar_UInt128_uint64_to_uint128((uint64_t)0x3ffffffffffU)); + uint64_t b2_42 = FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(b2, (uint32_t)42U)); + FStar_UInt128_t + b0_ = FStar_UInt128_add(b0, FStar_UInt128_uint64_to_uint128((b2_42 << (uint32_t)2U) + b2_42)); + b[2U] = b2_; + b[0U] = b0_; +} + +inline static void +Hacl_Bignum_Fproduct_copy_from_wide_(uint64_t *output, FStar_UInt128_t *input) +{ + for (uint32_t i = (uint32_t)0U; i < (uint32_t)3U; i = i + (uint32_t)1U) { + FStar_UInt128_t xi = input[i]; + output[i] = FStar_UInt128_uint128_to_uint64(xi); + } +} + +inline static void +Hacl_Bignum_Fproduct_sum_scalar_multiplication_( + FStar_UInt128_t *output, + uint64_t *input, + uint64_t s) +{ + for (uint32_t i = (uint32_t)0U; i < (uint32_t)3U; i = i + (uint32_t)1U) { + FStar_UInt128_t xi = output[i]; + uint64_t yi = input[i]; + output[i] = FStar_UInt128_add_mod(xi, FStar_UInt128_mul_wide(yi, s)); + } +} + +inline static void +Hacl_Bignum_Fproduct_carry_wide_(FStar_UInt128_t *tmp) +{ + for (uint32_t i = (uint32_t)0U; i < (uint32_t)2U; i = i + (uint32_t)1U) { + uint32_t ctr = i; + FStar_UInt128_t tctr = tmp[ctr]; + FStar_UInt128_t tctrp1 = tmp[ctr + (uint32_t)1U]; + uint64_t r0 = FStar_UInt128_uint128_to_uint64(tctr) & (uint64_t)0xfffffffffffU; + FStar_UInt128_t c = FStar_UInt128_shift_right(tctr, (uint32_t)44U); + tmp[ctr] = FStar_UInt128_uint64_to_uint128(r0); + tmp[ctr + (uint32_t)1U] = FStar_UInt128_add(tctrp1, c); + } +} + +inline static void +Hacl_Bignum_Fproduct_carry_limb_(uint64_t *tmp) +{ + for (uint32_t i = (uint32_t)0U; i < (uint32_t)2U; i = i + (uint32_t)1U) { + uint32_t ctr = i; + uint64_t tctr = tmp[ctr]; + uint64_t tctrp1 = tmp[ctr + (uint32_t)1U]; + uint64_t r0 = tctr & (uint64_t)0xfffffffffffU; + uint64_t c = tctr >> (uint32_t)44U; + tmp[ctr] = r0; + tmp[ctr + (uint32_t)1U] = tctrp1 + c; + } +} + +inline static void +Hacl_Bignum_Fmul_shift_reduce(uint64_t *output) +{ + uint64_t tmp = output[2U]; + for (uint32_t i = (uint32_t)0U; i < (uint32_t)2U; i = i + (uint32_t)1U) { + uint32_t ctr = (uint32_t)3U - i - (uint32_t)1U; + uint64_t z = output[ctr - (uint32_t)1U]; + output[ctr] = z; + } + output[0U] = tmp; + Hacl_Bignum_Modulo_reduce(output); +} + +static void +Hacl_Bignum_Fmul_mul_shift_reduce_(FStar_UInt128_t *output, uint64_t *input, uint64_t *input2) +{ + for (uint32_t i = (uint32_t)0U; i < (uint32_t)2U; i = i + (uint32_t)1U) { + uint64_t input2i = input2[i]; + Hacl_Bignum_Fproduct_sum_scalar_multiplication_(output, input, input2i); + Hacl_Bignum_Fmul_shift_reduce(input); + } + uint32_t i = (uint32_t)2U; + uint64_t input2i = input2[i]; + Hacl_Bignum_Fproduct_sum_scalar_multiplication_(output, input, input2i); +} + +inline static void +Hacl_Bignum_Fmul_fmul(uint64_t *output, uint64_t *input, uint64_t *input2) +{ + uint64_t tmp[3U] = { 0U }; + memcpy(tmp, input, (uint32_t)3U * sizeof input[0U]); + KRML_CHECK_SIZE(FStar_UInt128_uint64_to_uint128((uint64_t)0U), (uint32_t)3U); + FStar_UInt128_t t[3U]; + for (uint32_t _i = 0U; _i < (uint32_t)3U; ++_i) + t[_i] = FStar_UInt128_uint64_to_uint128((uint64_t)0U); + Hacl_Bignum_Fmul_mul_shift_reduce_(t, tmp, input2); + Hacl_Bignum_Fproduct_carry_wide_(t); + Hacl_Bignum_Modulo_carry_top_wide(t); + Hacl_Bignum_Fproduct_copy_from_wide_(output, t); + uint64_t i0 = output[0U]; + uint64_t i1 = output[1U]; + uint64_t i0_ = i0 & (uint64_t)0xfffffffffffU; + uint64_t i1_ = i1 + (i0 >> (uint32_t)44U); + output[0U] = i0_; + output[1U] = i1_; +} + +inline static void +Hacl_Bignum_AddAndMultiply_add_and_multiply(uint64_t *acc, uint64_t *block, uint64_t *r) +{ + for (uint32_t i = (uint32_t)0U; i < (uint32_t)3U; i = i + (uint32_t)1U) { + uint64_t xi = acc[i]; + uint64_t yi = block[i]; + acc[i] = xi + yi; + } + Hacl_Bignum_Fmul_fmul(acc, acc, r); +} + +inline static void +Hacl_Impl_Poly1305_64_poly1305_update( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *m) +{ + Hacl_Impl_Poly1305_64_State_poly1305_state scrut0 = st; + uint64_t *h = scrut0.h; + uint64_t *acc = h; + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *r = scrut.r; + uint64_t *r3 = r; + uint64_t tmp[3U] = { 0U }; + FStar_UInt128_t m0 = load128_le(m); + uint64_t r0 = FStar_UInt128_uint128_to_uint64(m0) & (uint64_t)0xfffffffffffU; + uint64_t + r1 = + FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(m0, (uint32_t)44U)) & (uint64_t)0xfffffffffffU; + uint64_t r2 = FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(m0, (uint32_t)88U)); + tmp[0U] = r0; + tmp[1U] = r1; + tmp[2U] = r2; + uint64_t b2 = tmp[2U]; + uint64_t b2_ = (uint64_t)0x10000000000U | b2; + tmp[2U] = b2_; + Hacl_Bignum_AddAndMultiply_add_and_multiply(acc, tmp, r3); +} + +inline static void +Hacl_Impl_Poly1305_64_poly1305_process_last_block_( + uint8_t *block, + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *m, + uint64_t rem_) +{ + uint64_t tmp[3U] = { 0U }; + FStar_UInt128_t m0 = load128_le(block); + uint64_t r0 = FStar_UInt128_uint128_to_uint64(m0) & (uint64_t)0xfffffffffffU; + uint64_t + r1 = + FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(m0, (uint32_t)44U)) & (uint64_t)0xfffffffffffU; + uint64_t r2 = FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(m0, (uint32_t)88U)); + tmp[0U] = r0; + tmp[1U] = r1; + tmp[2U] = r2; + Hacl_Impl_Poly1305_64_State_poly1305_state scrut0 = st; + uint64_t *h = scrut0.h; + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *r = scrut.r; + Hacl_Bignum_AddAndMultiply_add_and_multiply(h, tmp, r); +} + +inline static void +Hacl_Impl_Poly1305_64_poly1305_process_last_block( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *m, + uint64_t rem_) +{ + uint8_t zero1 = (uint8_t)0U; + KRML_CHECK_SIZE(zero1, (uint32_t)16U); + uint8_t block[16U]; + for (uint32_t _i = 0U; _i < (uint32_t)16U; ++_i) + block[_i] = zero1; + uint32_t i0 = (uint32_t)rem_; + uint32_t i = (uint32_t)rem_; + memcpy(block, m, i * sizeof m[0U]); + block[i0] = (uint8_t)1U; + Hacl_Impl_Poly1305_64_poly1305_process_last_block_(block, st, m, rem_); +} + +static void +Hacl_Impl_Poly1305_64_poly1305_last_pass(uint64_t *acc) +{ + Hacl_Bignum_Fproduct_carry_limb_(acc); + Hacl_Bignum_Modulo_carry_top(acc); + uint64_t a0 = acc[0U]; + uint64_t a10 = acc[1U]; + uint64_t a20 = acc[2U]; + uint64_t a0_ = a0 & (uint64_t)0xfffffffffffU; + uint64_t r0 = a0 >> (uint32_t)44U; + uint64_t a1_ = (a10 + r0) & (uint64_t)0xfffffffffffU; + uint64_t r1 = (a10 + r0) >> (uint32_t)44U; + uint64_t a2_ = a20 + r1; + acc[0U] = a0_; + acc[1U] = a1_; + acc[2U] = a2_; + Hacl_Bignum_Modulo_carry_top(acc); + uint64_t i0 = acc[0U]; + uint64_t i1 = acc[1U]; + uint64_t i0_ = i0 & (uint64_t)0xfffffffffffU; + uint64_t i1_ = i1 + (i0 >> (uint32_t)44U); + acc[0U] = i0_; + acc[1U] = i1_; + uint64_t a00 = acc[0U]; + uint64_t a1 = acc[1U]; + uint64_t a2 = acc[2U]; + uint64_t mask0 = FStar_UInt64_gte_mask(a00, (uint64_t)0xffffffffffbU); + uint64_t mask1 = FStar_UInt64_eq_mask(a1, (uint64_t)0xfffffffffffU); + uint64_t mask2 = FStar_UInt64_eq_mask(a2, (uint64_t)0x3ffffffffffU); + uint64_t mask = (mask0 & mask1) & mask2; + uint64_t a0_0 = a00 - ((uint64_t)0xffffffffffbU & mask); + uint64_t a1_0 = a1 - ((uint64_t)0xfffffffffffU & mask); + uint64_t a2_0 = a2 - ((uint64_t)0x3ffffffffffU & mask); + acc[0U] = a0_0; + acc[1U] = a1_0; + acc[2U] = a2_0; +} + +static Hacl_Impl_Poly1305_64_State_poly1305_state +Hacl_Impl_Poly1305_64_mk_state(uint64_t *r, uint64_t *h) +{ + return ((Hacl_Impl_Poly1305_64_State_poly1305_state){.r = r, .h = h }); +} + +static void +Hacl_Standalone_Poly1305_64_poly1305_blocks( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *m, + uint64_t len1) +{ + if (!(len1 == (uint64_t)0U)) { + uint8_t *block = m; + uint8_t *tail1 = m + (uint32_t)16U; + Hacl_Impl_Poly1305_64_poly1305_update(st, block); + uint64_t len2 = len1 - (uint64_t)1U; + Hacl_Standalone_Poly1305_64_poly1305_blocks(st, tail1, len2); + } +} + +static void +Hacl_Standalone_Poly1305_64_poly1305_partial( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *input, + uint64_t len1, + uint8_t *kr) +{ + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *r = scrut.r; + uint64_t *x0 = r; + FStar_UInt128_t k1 = load128_le(kr); + FStar_UInt128_t + k_clamped = + FStar_UInt128_logand(k1, + FStar_UInt128_logor(FStar_UInt128_shift_left(FStar_UInt128_uint64_to_uint128((uint64_t)0x0ffffffc0ffffffcU), + (uint32_t)64U), + FStar_UInt128_uint64_to_uint128((uint64_t)0x0ffffffc0fffffffU))); + uint64_t r0 = FStar_UInt128_uint128_to_uint64(k_clamped) & (uint64_t)0xfffffffffffU; + uint64_t + r1 = + FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(k_clamped, (uint32_t)44U)) & (uint64_t)0xfffffffffffU; + uint64_t + r2 = FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(k_clamped, (uint32_t)88U)); + x0[0U] = r0; + x0[1U] = r1; + x0[2U] = r2; + Hacl_Impl_Poly1305_64_State_poly1305_state scrut0 = st; + uint64_t *h = scrut0.h; + uint64_t *x00 = h; + x00[0U] = (uint64_t)0U; + x00[1U] = (uint64_t)0U; + x00[2U] = (uint64_t)0U; + Hacl_Standalone_Poly1305_64_poly1305_blocks(st, input, len1); +} + +static void +Hacl_Standalone_Poly1305_64_poly1305_complete( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *m, + uint64_t len1, + uint8_t *k1) +{ + uint8_t *kr = k1; + uint64_t len16 = len1 >> (uint32_t)4U; + uint64_t rem16 = len1 & (uint64_t)0xfU; + uint8_t *part_input = m; + uint8_t *last_block = m + (uint32_t)((uint64_t)16U * len16); + Hacl_Standalone_Poly1305_64_poly1305_partial(st, part_input, len16, kr); + if (!(rem16 == (uint64_t)0U)) + Hacl_Impl_Poly1305_64_poly1305_process_last_block(st, last_block, rem16); + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *h = scrut.h; + uint64_t *acc = h; + Hacl_Impl_Poly1305_64_poly1305_last_pass(acc); +} + +static void +Hacl_Standalone_Poly1305_64_crypto_onetimeauth_( + uint8_t *output, + uint8_t *input, + uint64_t len1, + uint8_t *k1) +{ + uint64_t buf[6U] = { 0U }; + uint64_t *r = buf; + uint64_t *h = buf + (uint32_t)3U; + Hacl_Impl_Poly1305_64_State_poly1305_state st = Hacl_Impl_Poly1305_64_mk_state(r, h); + uint8_t *key_s = k1 + (uint32_t)16U; + Hacl_Standalone_Poly1305_64_poly1305_complete(st, input, len1, k1); + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *h3 = scrut.h; + uint64_t *acc = h3; + FStar_UInt128_t k_ = load128_le(key_s); + uint64_t h0 = acc[0U]; + uint64_t h1 = acc[1U]; + uint64_t h2 = acc[2U]; + FStar_UInt128_t + acc_ = + FStar_UInt128_logor(FStar_UInt128_shift_left(FStar_UInt128_uint64_to_uint128(h2 + << (uint32_t)24U | + h1 >> (uint32_t)20U), + (uint32_t)64U), + FStar_UInt128_uint64_to_uint128(h1 << (uint32_t)44U | h0)); + FStar_UInt128_t mac_ = FStar_UInt128_add_mod(acc_, k_); + store128_le(output, mac_); +} + +static void +Hacl_Standalone_Poly1305_64_crypto_onetimeauth( + uint8_t *output, + uint8_t *input, + uint64_t len1, + uint8_t *k1) +{ + Hacl_Standalone_Poly1305_64_crypto_onetimeauth_(output, input, len1, k1); +} + +Hacl_Impl_Poly1305_64_State_poly1305_state +Hacl_Poly1305_64_mk_state(uint64_t *r, uint64_t *acc) +{ + return Hacl_Impl_Poly1305_64_mk_state(r, acc); +} + +void +Hacl_Poly1305_64_init(Hacl_Impl_Poly1305_64_State_poly1305_state st, uint8_t *k1) +{ + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *r = scrut.r; + uint64_t *x0 = r; + FStar_UInt128_t k10 = load128_le(k1); + FStar_UInt128_t + k_clamped = + FStar_UInt128_logand(k10, + FStar_UInt128_logor(FStar_UInt128_shift_left(FStar_UInt128_uint64_to_uint128((uint64_t)0x0ffffffc0ffffffcU), + (uint32_t)64U), + FStar_UInt128_uint64_to_uint128((uint64_t)0x0ffffffc0fffffffU))); + uint64_t r0 = FStar_UInt128_uint128_to_uint64(k_clamped) & (uint64_t)0xfffffffffffU; + uint64_t + r1 = + FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(k_clamped, (uint32_t)44U)) & (uint64_t)0xfffffffffffU; + uint64_t + r2 = FStar_UInt128_uint128_to_uint64(FStar_UInt128_shift_right(k_clamped, (uint32_t)88U)); + x0[0U] = r0; + x0[1U] = r1; + x0[2U] = r2; + Hacl_Impl_Poly1305_64_State_poly1305_state scrut0 = st; + uint64_t *h = scrut0.h; + uint64_t *x00 = h; + x00[0U] = (uint64_t)0U; + x00[1U] = (uint64_t)0U; + x00[2U] = (uint64_t)0U; +} + +void +Hacl_Poly1305_64_update_block(Hacl_Impl_Poly1305_64_State_poly1305_state st, uint8_t *m) +{ + Hacl_Impl_Poly1305_64_poly1305_update(st, m); +} + +void +Hacl_Poly1305_64_update( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *m, + uint32_t num_blocks) +{ + if (!(num_blocks == (uint32_t)0U)) { + uint8_t *block = m; + uint8_t *m_ = m + (uint32_t)16U; + uint32_t n1 = num_blocks - (uint32_t)1U; + Hacl_Poly1305_64_update_block(st, block); + Hacl_Poly1305_64_update(st, m_, n1); + } +} + +void +Hacl_Poly1305_64_update_last( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *m, + uint32_t len1) +{ + if (!((uint64_t)len1 == (uint64_t)0U)) + Hacl_Impl_Poly1305_64_poly1305_process_last_block(st, m, (uint64_t)len1); + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *h = scrut.h; + uint64_t *acc = h; + Hacl_Impl_Poly1305_64_poly1305_last_pass(acc); +} + +void +Hacl_Poly1305_64_finish( + Hacl_Impl_Poly1305_64_State_poly1305_state st, + uint8_t *mac, + uint8_t *k1) +{ + Hacl_Impl_Poly1305_64_State_poly1305_state scrut = st; + uint64_t *h = scrut.h; + uint64_t *acc = h; + FStar_UInt128_t k_ = load128_le(k1); + uint64_t h0 = acc[0U]; + uint64_t h1 = acc[1U]; + uint64_t h2 = acc[2U]; + FStar_UInt128_t + acc_ = + FStar_UInt128_logor(FStar_UInt128_shift_left(FStar_UInt128_uint64_to_uint128(h2 + << (uint32_t)24U | + h1 >> (uint32_t)20U), + (uint32_t)64U), + FStar_UInt128_uint64_to_uint128(h1 << (uint32_t)44U | h0)); + FStar_UInt128_t mac_ = FStar_UInt128_add_mod(acc_, k_); + store128_le(mac, mac_); +} + +void +Hacl_Poly1305_64_crypto_onetimeauth( + uint8_t *output, + uint8_t *input, + uint64_t len1, + uint8_t *k1) +{ + Hacl_Standalone_Poly1305_64_crypto_onetimeauth(output, input, len1, k1); +} |