diff options
Diffstat (limited to 'freebsd/crypto/openssl/crypto/ec/ecp_nistp224.c')
| -rw-r--r-- | freebsd/crypto/openssl/crypto/ec/ecp_nistp224.c | 65 |
1 files changed, 28 insertions, 37 deletions
diff --git a/freebsd/crypto/openssl/crypto/ec/ecp_nistp224.c b/freebsd/crypto/openssl/crypto/ec/ecp_nistp224.c index 8df7241e..0dcba532 100644 --- a/freebsd/crypto/openssl/crypto/ec/ecp_nistp224.c +++ b/freebsd/crypto/openssl/crypto/ec/ecp_nistp224.c @@ -1,7 +1,7 @@ #include <machine/rtems-bsd-user-space.h> /* - * Copyright 2010-2018 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 2010-2019 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy @@ -281,6 +281,7 @@ const EC_METHOD *EC_GFp_nistp224_method(void) ec_GFp_nist_field_mul, ec_GFp_nist_field_sqr, 0 /* field_div */ , + ec_GFp_simple_field_inv, 0 /* field_encode */ , 0 /* field_decode */ , 0, /* field_set_to_one */ @@ -325,34 +326,21 @@ static void felem_to_bin28(u8 out[28], const felem in) } } -/* To preserve endianness when using BN_bn2bin and BN_bin2bn */ -static void flip_endian(u8 *out, const u8 *in, unsigned len) -{ - unsigned i; - for (i = 0; i < len; ++i) - out[i] = in[len - 1 - i]; -} - /* From OpenSSL BIGNUM to internal representation */ static int BN_to_felem(felem out, const BIGNUM *bn) { - felem_bytearray b_in; felem_bytearray b_out; - unsigned num_bytes; + int num_bytes; - /* BN_bn2bin eats leading zeroes */ - memset(b_out, 0, sizeof(b_out)); - num_bytes = BN_num_bytes(bn); - if (num_bytes > sizeof(b_out)) { + if (BN_is_negative(bn)) { ECerr(EC_F_BN_TO_FELEM, EC_R_BIGNUM_OUT_OF_RANGE); return 0; } - if (BN_is_negative(bn)) { + num_bytes = BN_bn2lebinpad(bn, b_out, sizeof(b_out)); + if (num_bytes < 0) { ECerr(EC_F_BN_TO_FELEM, EC_R_BIGNUM_OUT_OF_RANGE); return 0; } - num_bytes = BN_bn2bin(bn, b_in); - flip_endian(b_out, b_in, num_bytes); bin28_to_felem(out, b_out); return 1; } @@ -360,10 +348,9 @@ static int BN_to_felem(felem out, const BIGNUM *bn) /* From internal representation to OpenSSL BIGNUM */ static BIGNUM *felem_to_BN(BIGNUM *out, const felem in) { - felem_bytearray b_in, b_out; - felem_to_bin28(b_in, in); - flip_endian(b_out, b_in, sizeof(b_out)); - return BN_bin2bn(b_out, sizeof(b_out), out); + felem_bytearray b_out; + felem_to_bin28(b_out, in); + return BN_lebin2bn(b_out, sizeof(b_out), out); } /******************************************************************************/ @@ -1403,8 +1390,7 @@ int ec_GFp_nistp224_points_mul(const EC_GROUP *group, EC_POINT *r, felem_bytearray *secrets = NULL; felem (*pre_comp)[17][3] = NULL; felem *tmp_felems = NULL; - felem_bytearray tmp; - unsigned num_bytes; + int num_bytes; int have_pre_comp = 0; size_t num_points = num; felem x_in, y_in, z_in, x_out, y_out, z_out; @@ -1479,14 +1465,12 @@ int ec_GFp_nistp224_points_mul(const EC_GROUP *group, EC_POINT *r, * i.e., they contribute nothing to the linear combination */ for (i = 0; i < num_points; ++i) { - if (i == num) + if (i == num) { /* the generator */ - { p = EC_GROUP_get0_generator(group); p_scalar = scalar; - } else + } else { /* the i^th point */ - { p = points[i]; p_scalar = scalars[i]; } @@ -1502,10 +1486,16 @@ int ec_GFp_nistp224_points_mul(const EC_GROUP *group, EC_POINT *r, ECerr(EC_F_EC_GFP_NISTP224_POINTS_MUL, ERR_R_BN_LIB); goto err; } - num_bytes = BN_bn2bin(tmp_scalar, tmp); - } else - num_bytes = BN_bn2bin(p_scalar, tmp); - flip_endian(secrets[i], tmp, num_bytes); + num_bytes = BN_bn2lebinpad(tmp_scalar, + secrets[i], sizeof(secrets[i])); + } else { + num_bytes = BN_bn2lebinpad(p_scalar, + secrets[i], sizeof(secrets[i])); + } + if (num_bytes < 0) { + ECerr(EC_F_EC_GFP_NISTP224_POINTS_MUL, ERR_R_BN_LIB); + goto err; + } /* precompute multiples */ if ((!BN_to_felem(x_out, p->X)) || (!BN_to_felem(y_out, p->Y)) || @@ -1548,20 +1538,21 @@ int ec_GFp_nistp224_points_mul(const EC_GROUP *group, EC_POINT *r, ECerr(EC_F_EC_GFP_NISTP224_POINTS_MUL, ERR_R_BN_LIB); goto err; } - num_bytes = BN_bn2bin(tmp_scalar, tmp); - } else - num_bytes = BN_bn2bin(scalar, tmp); - flip_endian(g_secret, tmp, num_bytes); + num_bytes = BN_bn2lebinpad(tmp_scalar, g_secret, sizeof(g_secret)); + } else { + num_bytes = BN_bn2lebinpad(scalar, g_secret, sizeof(g_secret)); + } /* do the multiplication with generator precomputation */ batch_mul(x_out, y_out, z_out, (const felem_bytearray(*))secrets, num_points, g_secret, mixed, (const felem(*)[17][3])pre_comp, g_pre_comp); - } else + } else { /* do the multiplication without generator precomputation */ batch_mul(x_out, y_out, z_out, (const felem_bytearray(*))secrets, num_points, NULL, mixed, (const felem(*)[17][3])pre_comp, NULL); + } /* reduce the output to its unique minimal representation */ felem_contract(x_in, x_out); felem_contract(y_in, y_out); |