diff options
Diffstat (limited to 'comm/third_party/botan/src/lib/ffi/ffi_mp.cpp')
| -rw-r--r-- | comm/third_party/botan/src/lib/ffi/ffi_mp.cpp | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/ffi/ffi_mp.cpp b/comm/third_party/botan/src/lib/ffi/ffi_mp.cpp new file mode 100644 index 0000000000..68869e6ecf --- /dev/null +++ b/comm/third_party/botan/src/lib/ffi/ffi_mp.cpp @@ -0,0 +1,312 @@ +/* +* (C) 2015,2017 Jack Lloyd +* (C) 2017 Ribose Inc +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/ffi.h> +#include <botan/internal/ffi_util.h> +#include <botan/internal/ffi_rng.h> +#include <botan/internal/ffi_mp.h> +#include <botan/reducer.h> +#include <botan/numthry.h> +#include <botan/divide.h> + +extern "C" { + +using namespace Botan_FFI; + +int botan_mp_init(botan_mp_t* mp_out) + { + return ffi_guard_thunk(__func__, [=]() -> int { + if(mp_out == nullptr) + return BOTAN_FFI_ERROR_NULL_POINTER; + + *mp_out = new botan_mp_struct(new Botan::BigInt); + return BOTAN_FFI_SUCCESS; + }); + } + +int botan_mp_clear(botan_mp_t mp) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { bn.clear(); }); + } + +int botan_mp_set_from_int(botan_mp_t mp, int initial_value) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { + if(initial_value >= 0) + { + bn = Botan::BigInt(static_cast<uint64_t>(initial_value)); + } + else + { + bn = Botan::BigInt(static_cast<uint64_t>(-initial_value)); + bn.flip_sign(); + } + }); + } + +int botan_mp_set_from_str(botan_mp_t mp, const char* str) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { bn = Botan::BigInt(str); }); + } + +int botan_mp_set_from_radix_str(botan_mp_t mp, const char* str, size_t radix) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { + Botan::BigInt::Base base; + if(radix == 10) + base = Botan::BigInt::Decimal; + else if(radix == 16) + base = Botan::BigInt::Hexadecimal; + else + return BOTAN_FFI_ERROR_NOT_IMPLEMENTED; + + const uint8_t* bytes = Botan::cast_char_ptr_to_uint8(str); + const size_t len = strlen(str); + + bn = Botan::BigInt(bytes, len, base); + }); + } + +int botan_mp_set_from_mp(botan_mp_t dest, const botan_mp_t source) + { + return BOTAN_FFI_DO(Botan::BigInt, dest, bn, { bn = safe_get(source); }); + } + +int botan_mp_is_negative(const botan_mp_t mp) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { return bn.is_negative() ? 1 : 0; }); + } + +int botan_mp_is_positive(const botan_mp_t mp) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { return bn.is_positive() ? 1 : 0; }); + } + +int botan_mp_flip_sign(botan_mp_t mp) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { bn.flip_sign(); }); + } + +int botan_mp_from_bin(botan_mp_t mp, const uint8_t bin[], size_t bin_len) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { bn.binary_decode(bin, bin_len); }); + } + +int botan_mp_to_hex(const botan_mp_t mp, char* out) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { + const std::string hex = bn.to_hex_string(); + std::memcpy(out, hex.c_str(), 1 + hex.size()); + }); + } + +int botan_mp_to_str(const botan_mp_t mp, uint8_t digit_base, char* out, size_t* out_len) + { + return BOTAN_FFI_RETURNING(Botan::BigInt, mp, bn, { + + if(digit_base == 0 || digit_base == 10) + return write_str_output(out, out_len, bn.to_dec_string()); + else if(digit_base == 16) + return write_str_output(out, out_len, bn.to_hex_string()); + else + return BOTAN_FFI_ERROR_BAD_PARAMETER; + }); + } + +int botan_mp_to_bin(const botan_mp_t mp, uint8_t vec[]) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { bn.binary_encode(vec); }); + } + +int botan_mp_to_uint32(const botan_mp_t mp, uint32_t* val) + { + if(val == nullptr) + { + return BOTAN_FFI_ERROR_NULL_POINTER; + } + return BOTAN_FFI_DO(Botan::BigInt, mp, bn, { *val = bn.to_u32bit(); }); + } + +int botan_mp_destroy(botan_mp_t mp) + { + return BOTAN_FFI_CHECKED_DELETE(mp); + } + +int botan_mp_add(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res += safe_get(y); + else + res = safe_get(x) + safe_get(y); + }); + } + +int botan_mp_sub(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res -= safe_get(y); + else + res = safe_get(x) - safe_get(y); + }); + } + +int botan_mp_add_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res += static_cast<Botan::word>(y); + else + res = safe_get(x) + static_cast<Botan::word>(y); + }); + } + +int botan_mp_sub_u32(botan_mp_t result, const botan_mp_t x, uint32_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res -= static_cast<Botan::word>(y); + else + res = safe_get(x) - static_cast<Botan::word>(y); + }); + } + +int botan_mp_mul(botan_mp_t result, const botan_mp_t x, const botan_mp_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, result, res, { + if(result == x) + res *= safe_get(y); + else + res = safe_get(x) * safe_get(y); + }); + } + +int botan_mp_div(botan_mp_t quotient, + botan_mp_t remainder, + const botan_mp_t x, const botan_mp_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, quotient, q, { + Botan::BigInt r; + Botan::vartime_divide(safe_get(x), safe_get(y), q, r); + safe_get(remainder) = r; + }); + } + +int botan_mp_equal(const botan_mp_t x_w, const botan_mp_t y_w) + { + return BOTAN_FFI_RETURNING(Botan::BigInt, x_w, x, { return x == safe_get(y_w); }); + } + +int botan_mp_is_zero(const botan_mp_t mp) + { + return BOTAN_FFI_RETURNING(Botan::BigInt, mp, bn, { return bn.is_zero(); }); + } + +int botan_mp_is_odd(const botan_mp_t mp) + { + return BOTAN_FFI_RETURNING(Botan::BigInt, mp, bn, { return bn.is_odd(); }); + } + +int botan_mp_is_even(const botan_mp_t mp) + { + return BOTAN_FFI_RETURNING(Botan::BigInt, mp, bn, { return bn.is_even(); }); + } + +int botan_mp_cmp(int* result, const botan_mp_t x_w, const botan_mp_t y_w) + { + return BOTAN_FFI_DO(Botan::BigInt, x_w, x, { *result = x.cmp(safe_get(y_w)); }); + } + +int botan_mp_swap(botan_mp_t x_w, botan_mp_t y_w) + { + return BOTAN_FFI_DO(Botan::BigInt, x_w, x, { x.swap(safe_get(y_w)); }); + } + +// Return (base^exponent) % modulus +int botan_mp_powmod(botan_mp_t out, const botan_mp_t base, const botan_mp_t exponent, const botan_mp_t modulus) + { + return BOTAN_FFI_DO(Botan::BigInt, out, o, + { o = Botan::power_mod(safe_get(base), safe_get(exponent), safe_get(modulus)); }); + } + +int botan_mp_lshift(botan_mp_t out, const botan_mp_t in, size_t shift) + { + return BOTAN_FFI_DO(Botan::BigInt, out, o, { o = safe_get(in) << shift; }); + } + +int botan_mp_rshift(botan_mp_t out, const botan_mp_t in, size_t shift) + { + return BOTAN_FFI_DO(Botan::BigInt, out, o, { o = safe_get(in) >> shift; }); + } + +int botan_mp_mod_inverse(botan_mp_t out, const botan_mp_t in, const botan_mp_t modulus) + { + return BOTAN_FFI_DO(Botan::BigInt, out, o, { o = Botan::inverse_mod(safe_get(in), safe_get(modulus)); }); + } + +int botan_mp_mod_mul(botan_mp_t out, const botan_mp_t x, const botan_mp_t y, const botan_mp_t modulus) + { + return BOTAN_FFI_DO(Botan::BigInt, out, o, { + Botan::Modular_Reducer reducer(safe_get(modulus)); + o = reducer.multiply(safe_get(x), safe_get(y)); + }); + } + +int botan_mp_rand_bits(botan_mp_t rand_out, botan_rng_t rng, size_t bits) + { + return BOTAN_FFI_DO(Botan::RandomNumberGenerator, rng, r, { + safe_get(rand_out).randomize(r, bits); }); + } + +int botan_mp_rand_range(botan_mp_t rand_out, + botan_rng_t rng, + const botan_mp_t lower, + const botan_mp_t upper) + { + return BOTAN_FFI_DO(Botan::RandomNumberGenerator, rng, r, { + safe_get(rand_out) = Botan::BigInt::random_integer(r, safe_get(lower), safe_get(upper)); }); + } + +int botan_mp_gcd(botan_mp_t out, const botan_mp_t x, const botan_mp_t y) + { + return BOTAN_FFI_DO(Botan::BigInt, out, o, { + o = Botan::gcd(safe_get(x), safe_get(y)); }); + } + +int botan_mp_is_prime(const botan_mp_t mp, botan_rng_t rng, size_t test_prob) + { + return BOTAN_FFI_RETURNING(Botan::BigInt, mp, n, + { return (Botan::is_prime(n, safe_get(rng), test_prob)) ? 1 : 0; }); + } + +int botan_mp_get_bit(const botan_mp_t mp, size_t bit) + { + return BOTAN_FFI_RETURNING(Botan::BigInt, mp, n, { return (n.get_bit(bit)); }); + } + +int botan_mp_set_bit(botan_mp_t mp, size_t bit) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, n, { n.set_bit(bit); }); + } + +int botan_mp_clear_bit(botan_mp_t mp, size_t bit) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, n, { n.clear_bit(bit); }); + } + +int botan_mp_num_bits(const botan_mp_t mp, size_t* bits) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, n, { *bits = n.bits(); }); + } + +int botan_mp_num_bytes(const botan_mp_t mp, size_t* bytes) + { + return BOTAN_FFI_DO(Botan::BigInt, mp, n, { *bytes = n.bytes(); }); + } + +} |