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Merge pull request #3 from ludwigatlubis/ecc
Added formal folder with readme and pdf
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src/ecc/formal/properties/coverpoints/fv_add_sub_alter_coverpoints.sv
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// ------------------------------------------------- | ||
// Contact: [email protected] | ||
// Author: Tobias Ludwig, Michael Schwarz | ||
// ------------------------------------------------- | ||
// SPDX-License-Identifier: Apache-2.0 | ||
// | ||
// 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. | ||
// | ||
module fv_add_sub_alter_coverpoints_m( | ||
input logic clk, | ||
input logic reset_n, | ||
input logic zeroize | ||
); | ||
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default clocking default_clk @(posedge clk); endclocking | ||
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//Cover zeroize: | ||
cover_zeroize: cover property(disable iff(!reset_n) ecc_add_sub_mod_alter.zeroize ); | ||
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cover_prime_p: cover property(disable iff(!reset_n) (ecc_add_sub_mod_alter.prime_i==384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff)); | ||
cover_prime_q: cover property(disable iff(!reset_n)(ecc_add_sub_mod_alter.prime_i==384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973)); | ||
cover_add_en: cover property(disable iff(!reset_n) ecc_add_sub_mod_alter.add_en_i==1); | ||
cover_add_disable: cover property(disable iff(!reset_n) ecc_add_sub_mod_alter.add_en_i==0); | ||
cover_r0_0: cover property(disable iff(!reset_n || zeroize) ecc_add_sub_mod_alter.r0=='0); | ||
cover_r0_1: cover property(disable iff(!reset_n || zeroize) ecc_add_sub_mod_alter.r0=='1); | ||
cover_r0_greater_prime: cover property(disable iff(!reset_n || zeroize) ecc_add_sub_mod_alter.r0 > ecc_add_sub_mod_alter.prime_i); | ||
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endmodule | ||
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bind ecc_add_sub_mod_alter fv_add_sub_alter_coverpoints_m fv_add_sub_alter_coverpoints( | ||
.clk(clk), | ||
.reset_n(reset_n), | ||
.zeroize(zeroize) | ||
); |
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src/ecc/formal/properties/coverpoints/fv_arith_unit_coverpoints.sv
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// ------------------------------------------------- | ||
// Contact: [email protected] | ||
// Author: Tobias Ludwig, Michael Schwarz | ||
// ------------------------------------------------- | ||
// SPDX-License-Identifier: Apache-2.0 | ||
// | ||
// 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. | ||
// | ||
module fv_ecc_arith_unit_coverpoints_m( | ||
input logic clk, | ||
input logic reset_n, | ||
input logic zeroize | ||
); | ||
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default clocking default_clk @(posedge clk); endclocking | ||
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//Cover zeroize: | ||
cover_zeroize: cover property(disable iff(!reset_n) ecc_arith_unit.zeroize ); | ||
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//cover wea | ||
cover_wea: cover property(disable iff(!reset_n) ( | ||
ecc_arith_unit.ecc_instr_s.opcode.add_en | ||
##3 | ||
ecc_arith_unit.ram_tdp_file_i.wea)); | ||
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//cover web | ||
cover_wem: cover property(disable iff(!reset_n) | ||
ecc_arith_unit.ecc_instr_s.opcode.mult_en | ||
##41 | ||
ecc_arith_unit.web_mux_s); | ||
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//cover req_digit when keygen cmd | ||
cover_req_digit_keygen: cover property(disable iff(!reset_n) | ||
ecc_arith_unit.ecc_cmd_i== 3'b001 //KEYGEN_CMD | ||
##1 | ||
ecc_arith_unit.req_digit[->576]); | ||
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//cover req_digit when signing cmd | ||
cover_req_digit_signing: cover property(disable iff(!reset_n) | ||
ecc_arith_unit.ecc_cmd_i==3'b010 //SIGN_CMD | ||
##1 | ||
ecc_arith_unit.req_digit[->576]); | ||
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//cover wr_op_sel_i when ecc_cmd_i is received | ||
cover_wr_op_sel_i: cover property(disable iff(!reset_n) | ||
(ecc_arith_unit.ecc_cmd_i!=3'b0 && !ecc_arith_unit.wr_op_sel_i)); | ||
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//cover wr_en_i when ecc_cmd_i is received | ||
cover_wr_en_i: cover property(disable iff(!reset_n || zeroize) | ||
(ecc_arith_unit.ecc_cmd_i!=3'b0 && !ecc_arith_unit.wr_en_i)); | ||
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//cover sca_en_i | ||
cover_sca_en_always: cover property(disable iff(!reset_n || zeroize) | ||
ecc_arith_unit.sca_en_i ==1); | ||
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//cover digit_in be the MSB bit of secret key | ||
cover_digit_in_msb_secret_key: cover property(disable iff(!reset_n || zeroize) | ||
ecc_arith_unit.req_digit | ||
##1 | ||
ecc_arith_unit.digit_in == $past(ecc_arith_unit.secret_key[(ecc_arith_unit.REG_SIZE+ecc_arith_unit.RND_SIZE)-1])); | ||
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//cover secret key is shifted with req_digit | ||
cover_req_digit_secret_key: cover property(disable iff(!reset_n || zeroize) | ||
ecc_arith_unit.req_digit | ||
##1 | ||
ecc_arith_unit.secret_key == $past({ecc_arith_unit.secret_key[(ecc_arith_unit.REG_SIZE+ecc_arith_unit.RND_SIZE)-2 : 0], ecc_arith_unit.secret_key[(ecc_arith_unit.REG_SIZE+ecc_arith_unit.RND_SIZE)-1]})); | ||
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endmodule | ||
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bind ecc_arith_unit fv_ecc_arith_unit_coverpoints_m fv_ecc_arith_unit_coverpoints( | ||
.clk(clk), | ||
.reset_n(reset_n), | ||
.zeroize(zeroize) | ||
); |
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src/ecc/formal/properties/coverpoints/fv_ecc_dsa_ctrl_coverpoints.sv
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// ------------------------------------------------- | ||
// Contact: [email protected] | ||
// Author: Tobias Ludwig, Michael Schwarz | ||
// ------------------------------------------------- | ||
// SPDX-License-Identifier: Apache-2.0 | ||
// | ||
// 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. | ||
// | ||
module fv_ecc_dsa_ctrl_coverpoints( | ||
input logic clk, | ||
input logic reset_n, | ||
input logic zeroize | ||
); | ||
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default clocking default_clk @(posedge clk); endclocking | ||
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//cover zeroize | ||
cover_zeroize: cover property(disable iff(!reset_n) ecc_dsa_ctrl.zeroize_reg ); | ||
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//cover seed_reg | ||
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cover_seed_reg_max: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.seed_reg == 384'hFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); | ||
cover_seed_reg_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.seed_reg =='0); | ||
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//cover nonce_reg | ||
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cover_nonce_reg_max: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.nonce_reg== 384'hFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); | ||
cover_nonce_reg_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.nonce_reg =='0); | ||
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//cover msg_reg | ||
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cover_msg_reg_max: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.msg_reg == 384'hFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); | ||
cover_msg_reg_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.msg_reg =='0); | ||
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//cover privkey_reg | ||
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cover_privkey_reg_less_grp_order: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.privkey_reg < 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973); | ||
cover_privkey_reg_grt_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.privkey_reg >'0); | ||
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//cover scalar_G_reg | ||
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cover_scalar_G_reg_less_grp_order: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_G_reg < 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973); | ||
cover_scalar_G_reg_grt_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_G_reg >'0); | ||
cover_scalar_G_reg_grp_order_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_G_reg == 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52972); | ||
cover_scalar_G_reg_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_G_reg == 1); | ||
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//cover scalar_PK_reg | ||
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cover_scalar_PK_reg_less_grp_order: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_PK_reg < 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973); | ||
cover_scalar_PK_reg_grt_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_PK_reg >'0); | ||
cover_scalar_PK_reg_grp_order_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_PK_reg == 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52972); | ||
cover_scalar_PK_reg_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_PK_reg == 1); | ||
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//cover r_reg | ||
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cover_r_reg_less_grp_order: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.r_reg < 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973); | ||
cover_r_reg_grt_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.r_reg >'0); | ||
cover_r_reg_grp_order_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.r_reg == 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52972); | ||
cover_r_reg_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.r_reg == 1); | ||
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//cover s_reg | ||
cover_s_reg_less_grp_order: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.s_reg < 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973); | ||
cover_s_reg_grt_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.s_reg >'0); | ||
cover_s_reg_grp_order_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.s_reg == 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52972); | ||
cover_s_reg_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.s_reg == 1); | ||
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//cover IV_reg | ||
cover_IV_reg_less_grp_order: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.IV_reg < 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973); | ||
cover_IV_reg_grt_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.IV_reg >'0); | ||
cover_IV_reg_grp_order_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.IV_reg == 384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52972); | ||
cover_IV_reg_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.IV_reg == 1); | ||
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//cover pubkeyx_reg | ||
cover_pubkeyx_reg_less_prime: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyx_reg < 384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff); | ||
cover_pubkeyx_reg_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyx_reg =='0); | ||
cover_pubkeyx_reg_prime_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyx_reg == 384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffe); | ||
cover_pubkeyx_reg_grt_prime: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyx_reg > 384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff); | ||
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//cover pubkeyy_reg | ||
cover_pubkeyy_reg_less_prime: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyy_reg < 384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff); | ||
cover_pubkeyy_reg_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyy_reg =='0); | ||
cover_pubkeyy_reg_prime_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyy_reg == 384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffe); | ||
cover_pubkeyy_reg_grt_prime: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.pubkeyy_reg > 384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff); | ||
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//cover scalar_out_reg | ||
cover_scalar_out_reg_eq_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_out_reg==1); | ||
cover_scalar_out_reg_grp_order_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_out_reg==384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52972); | ||
cover_scalar_out_reg_grp_mult: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_out_reg==(1+((2**192)-1)*384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973) ); | ||
cover_scalar_out_reg_grp_order_mult_1: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.scalar_out_reg==(384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52972 +((2**192)-1)*384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973) ); | ||
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//cover lambda_reg | ||
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cover_lambda_reg_max: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.lambda_reg == 384'hFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); | ||
cover_lambda_reg_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.lambda_reg =='0); | ||
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//cover masking_rnd_reg | ||
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cover_masking_rnd_reg_max: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.masking_rnd_reg == 384'hFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF); | ||
cover_masking_rnd_reg_zero: cover property(disable iff(!reset_n || zeroize) ecc_dsa_ctrl.masking_rnd_reg =='0); | ||
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endmodule | ||
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bind ecc_dsa_ctrl fv_ecc_dsa_ctrl_coverpoints fv_ecc_dsa_ctrl_coverpoints_inst ( | ||
.clk(clk), | ||
.reset_n(reset_n), | ||
.zeroize(ecc_dsa_ctrl.zeroize_reg) | ||
); |
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src/ecc/formal/properties/coverpoints/fv_ecc_montgomerymultiplier_coverpoints.sv
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// ------------------------------------------------- | ||
// Contact: [email protected] | ||
// Author: Tobias Ludwig, Michael Schwarz | ||
// ------------------------------------------------- | ||
// SPDX-License-Identifier: Apache-2.0 | ||
// | ||
// 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. | ||
// | ||
module fv_ecc_montgomerymultiplier_coverpoints_m( | ||
input logic clk, | ||
input logic reset_n, | ||
input logic zeroize | ||
); | ||
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default clocking default_clk @(posedge clk); endclocking | ||
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//Cover zeroize: | ||
cover_zeroize: cover property(disable iff(!reset_n) ecc_montgomerymultiplier.zeroize ); | ||
cover_prime_p: cover property(disable iff(!reset_n || zeroize) (ecc_montgomerymultiplier.n_i==384'hfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff)); | ||
cover_group_order: cover property(disable iff(!reset_n || zeroize)(ecc_montgomerymultiplier.n_i==384'hffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973)); | ||
cover_n_prime_i_prime_mu : cover property(disable iff(!reset_n|| zeroize) ecc_montgomerymultiplier.n_prime_i == 32'h00000001); | ||
cover_n_prime_i_group_order_mu : cover property(disable iff(!reset_n|| zeroize) ecc_montgomerymultiplier.n_prime_i == 32'he88fdc45); | ||
cover_opa_i_0 : cover property(disable iff(!reset_n|| zeroize) (ecc_montgomerymultiplier.opa_i == '0)&&(ecc_montgomerymultiplier.opb_i == '0 || ecc_montgomerymultiplier.opb_i == (ecc_montgomerymultiplier.n_i-1)) ); | ||
cover_opa_i_prime_minus_1 : cover property(disable iff(!reset_n|| zeroize) (ecc_montgomerymultiplier.opa_i == (ecc_montgomerymultiplier.n_i-1))&&(ecc_montgomerymultiplier.opb_i == '0 || ecc_montgomerymultiplier.opb_i == (ecc_montgomerymultiplier.n_i-1)) ); | ||
cover_opb_i_0 : cover property(disable iff(!reset_n|| zeroize) (ecc_montgomerymultiplier.opb_i == '0)&&(ecc_montgomerymultiplier.opa_i == '0 || ecc_montgomerymultiplier.opa_i == (ecc_montgomerymultiplier.n_i-1)) ); | ||
cover_opb_i_prime_minus_1 : cover property(disable iff(!reset_n|| zeroize) (ecc_montgomerymultiplier.opb_i == (ecc_montgomerymultiplier.n_i-1))&&(ecc_montgomerymultiplier.opa_i == '0 || ecc_montgomerymultiplier.opa_i == (ecc_montgomerymultiplier.n_i-1)) ); | ||
cover_sub_b_o_zero: cover property(disable iff(!reset_n || zeroize) ecc_montgomerymultiplier.ready_o && ecc_montgomerymultiplier.sub_b_o[2*(ecc_montgomerymultiplier.PE_UNITS+1)]==0); | ||
cover_sub_b_o_one: cover property(disable iff(!reset_n || zeroize) ecc_montgomerymultiplier.ready_o && ecc_montgomerymultiplier.sub_b_o[2*(ecc_montgomerymultiplier.PE_UNITS+1)]== 1); | ||
cover_p_sub_internal: cover property (disable iff(!reset_n || zeroize) !$past(!reset_n || zeroize) && ecc_montgomerymultiplier.ready_o && (ecc_montgomerymultiplier.p_subtracted_internal == ( ecc_montgomerymultiplier.p_internal - ecc_montgomerymultiplier.n_i))); | ||
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endmodule | ||
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bind ecc_montgomerymultiplier fv_ecc_montgomerymultiplier_coverpoints_m fv_ecc_montgomerymultiplier_coverpoints( | ||
.clk(clk), | ||
.reset_n(reset_n), | ||
.zeroize(zeroize) | ||
); |
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