mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-14 19:50:12 +01:00
458 lines
12 KiB
C
458 lines
12 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "pk11pub.h"
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#include "secerr.h"
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#include "nss.h"
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static SECStatus
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hex_to_byteval(const char *c2, unsigned char *byteval)
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{
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int i;
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unsigned char offset;
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*byteval = 0;
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for (i=0; i<2; i++) {
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if (c2[i] >= '0' && c2[i] <= '9') {
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offset = c2[i] - '0';
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*byteval |= offset << 4*(1-i);
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} else if (c2[i] >= 'a' && c2[i] <= 'f') {
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offset = c2[i] - 'a';
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*byteval |= (offset + 10) << 4*(1-i);
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} else if (c2[i] >= 'A' && c2[i] <= 'F') {
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offset = c2[i] - 'A';
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*byteval |= (offset + 10) << 4*(1-i);
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} else {
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return SECFailure;
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}
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}
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return SECSuccess;
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}
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static SECStatus
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aes_encrypt_buf(
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const unsigned char *key, unsigned int keysize,
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const unsigned char *iv, unsigned int ivsize,
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unsigned char *output, unsigned int *outputlen, unsigned int maxoutputlen,
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const unsigned char *input, unsigned int inputlen,
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const unsigned char *aad, unsigned int aadlen, unsigned int tagsize)
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{
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SECStatus rv = SECFailure;
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SECItem key_item;
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PK11SlotInfo* slot = NULL;
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PK11SymKey *symKey = NULL;
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CK_GCM_PARAMS gcm_params;
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SECItem param;
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/* Import key into NSS. */
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key_item.type = siBuffer;
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key_item.data = (unsigned char *) key; /* const cast */
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key_item.len = keysize;
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slot = PK11_GetInternalSlot();
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symKey = PK11_ImportSymKey(slot, CKM_AES_GCM, PK11_OriginUnwrap,
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CKA_ENCRYPT, &key_item, NULL);
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PK11_FreeSlot(slot);
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slot = NULL;
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if (!symKey) {
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fprintf(stderr, "PK11_ImportSymKey failed\n");
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goto loser;
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}
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gcm_params.pIv = (unsigned char *) iv; /* const cast */
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gcm_params.ulIvLen = ivsize;
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gcm_params.pAAD = (unsigned char *) aad; /* const cast */
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gcm_params.ulAADLen = aadlen;
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gcm_params.ulTagBits = tagsize * 8;
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param.type = siBuffer;
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param.data = (unsigned char *) &gcm_params;
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param.len = sizeof(gcm_params);
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if (PK11_Encrypt(symKey, CKM_AES_GCM, ¶m,
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output, outputlen, maxoutputlen,
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input, inputlen) != SECSuccess) {
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fprintf(stderr, "PK11_Encrypt failed\n");
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goto loser;
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}
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rv = SECSuccess;
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loser:
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if (symKey != NULL) {
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PK11_FreeSymKey(symKey);
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}
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return rv;
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}
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static SECStatus
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aes_decrypt_buf(
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const unsigned char *key, unsigned int keysize,
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const unsigned char *iv, unsigned int ivsize,
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unsigned char *output, unsigned int *outputlen, unsigned int maxoutputlen,
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const unsigned char *input, unsigned int inputlen,
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const unsigned char *aad, unsigned int aadlen,
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const unsigned char *tag, unsigned int tagsize)
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{
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SECStatus rv = SECFailure;
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unsigned char concatenated[11*16]; /* 1 to 11 blocks */
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SECItem key_item;
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PK11SlotInfo *slot = NULL;
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PK11SymKey *symKey = NULL;
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CK_GCM_PARAMS gcm_params;
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SECItem param;
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if (inputlen + tagsize > sizeof(concatenated)) {
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fprintf(stderr, "aes_decrypt_buf: local buffer too small\n");
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goto loser;
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}
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memcpy(concatenated, input, inputlen);
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memcpy(concatenated + inputlen, tag, tagsize);
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/* Import key into NSS. */
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key_item.type = siBuffer;
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key_item.data = (unsigned char *) key; /* const cast */
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key_item.len = keysize;
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slot = PK11_GetInternalSlot();
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symKey = PK11_ImportSymKey(slot, CKM_AES_GCM, PK11_OriginUnwrap,
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CKA_DECRYPT, &key_item, NULL);
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PK11_FreeSlot(slot);
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slot = NULL;
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if (!symKey) {
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fprintf(stderr, "PK11_ImportSymKey failed\n");
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goto loser;
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}
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gcm_params.pIv = (unsigned char *) iv;
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gcm_params.ulIvLen = ivsize;
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gcm_params.pAAD = (unsigned char *) aad;
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gcm_params.ulAADLen = aadlen;
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gcm_params.ulTagBits = tagsize * 8;
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param.type = siBuffer;
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param.data = (unsigned char *) &gcm_params;
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param.len = sizeof(gcm_params);
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if (PK11_Decrypt(symKey, CKM_AES_GCM, ¶m,
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output, outputlen, maxoutputlen,
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concatenated, inputlen + tagsize) != SECSuccess) {
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goto loser;
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}
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rv = SECSuccess;
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loser:
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if (symKey != NULL) {
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PK11_FreeSymKey(symKey);
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}
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return rv;
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}
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/*
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* Perform the AES Known Answer Test (KAT) in Galois Counter Mode (GCM).
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*
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* respfn is the pathname of the RESPONSE file.
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*/
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static void
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aes_gcm_kat(const char *respfn)
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{
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char buf[512]; /* holds one line from the input REQUEST file.
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* needs to be large enough to hold the longest
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* line "CIPHERTEXT = <320 hex digits>\n".
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*/
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FILE *aesresp; /* input stream from the RESPONSE file */
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int i, j;
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unsigned int test_group = 0;
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unsigned int num_tests;
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PRBool is_encrypt;
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unsigned char key[32]; /* 128, 192, or 256 bits */
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unsigned int keysize;
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unsigned char iv[10*16]; /* 1 to 10 blocks */
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unsigned int ivsize;
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unsigned char plaintext[10*16]; /* 1 to 10 blocks */
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unsigned int plaintextlen = 0;
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unsigned char aad[10*16]; /* 1 to 10 blocks */
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unsigned int aadlen = 0;
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unsigned char ciphertext[10*16]; /* 1 to 10 blocks */
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unsigned int ciphertextlen;
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unsigned char tag[16];
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unsigned int tagsize;
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unsigned char output[10*16]; /* 1 to 10 blocks */
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unsigned int outputlen;
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unsigned int expected_keylen = 0;
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unsigned int expected_ivlen = 0;
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unsigned int expected_ptlen = 0;
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unsigned int expected_aadlen = 0;
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unsigned int expected_taglen = 0;
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SECStatus rv;
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if (strstr(respfn, "Encrypt") != NULL) {
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is_encrypt = PR_TRUE;
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} else if (strstr(respfn, "Decrypt") != NULL) {
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is_encrypt = PR_FALSE;
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} else {
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fprintf(stderr, "Input file name must contain Encrypt or Decrypt\n");
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exit(1);
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}
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aesresp = fopen(respfn, "r");
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if (aesresp == NULL) {
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fprintf(stderr, "Cannot open input file %s\n", respfn);
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exit(1);
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}
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while (fgets(buf, sizeof buf, aesresp) != NULL) {
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/* a comment or blank line */
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if (buf[0] == '#' || buf[0] == '\n') {
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continue;
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}
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/* [Keylen = ...], [IVlen = ...], etc. */
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if (buf[0] == '[') {
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if (strncmp(&buf[1], "Keylen = ", 9) == 0) {
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expected_keylen = atoi(&buf[10]);
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} else if (strncmp(&buf[1], "IVlen = ", 8) == 0) {
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expected_ivlen = atoi(&buf[9]);
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} else if (strncmp(&buf[1], "PTlen = ", 8) == 0) {
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expected_ptlen = atoi(&buf[9]);
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} else if (strncmp(&buf[1], "AADlen = ", 9) == 0) {
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expected_aadlen = atoi(&buf[10]);
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} else if (strncmp(&buf[1], "Taglen = ", 9) == 0) {
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expected_taglen = atoi(&buf[10]);
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test_group++;
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if (test_group > 1) {
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/* Report num_tests for the previous test group. */
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printf("%u tests\n", num_tests);
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}
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num_tests = 0;
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printf("Keylen = %u, IVlen = %u, PTlen = %u, AADlen = %u, "
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"Taglen = %u: ", expected_keylen, expected_ivlen,
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expected_ptlen, expected_aadlen, expected_taglen);
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/* Convert lengths in bits to lengths in bytes. */
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PORT_Assert(expected_keylen % 8 == 0);
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expected_keylen /= 8;
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PORT_Assert(expected_ivlen % 8 == 0);
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expected_ivlen /= 8;
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PORT_Assert(expected_ptlen % 8 == 0);
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expected_ptlen /= 8;
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PORT_Assert(expected_aadlen % 8 == 0);
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expected_aadlen /= 8;
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PORT_Assert(expected_taglen % 8 == 0);
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expected_taglen /= 8;
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} else {
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fprintf(stderr, "Unexpected input line: %s\n", buf);
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exit(1);
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}
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continue;
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}
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/* "Count = x" begins a new data set */
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if (strncmp(buf, "Count", 5) == 0) {
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/* zeroize the variables for the test with this data set */
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memset(key, 0, sizeof key);
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keysize = 0;
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memset(iv, 0, sizeof iv);
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ivsize = 0;
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memset(plaintext, 0, sizeof plaintext);
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plaintextlen = 0;
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memset(aad, 0, sizeof aad);
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aadlen = 0;
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memset(ciphertext, 0, sizeof ciphertext);
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ciphertextlen = 0;
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memset(output, 0, sizeof output);
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outputlen = 0;
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num_tests++;
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continue;
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}
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/* Key = ... */
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if (strncmp(buf, "Key", 3) == 0) {
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i = 3;
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while (isspace(buf[i]) || buf[i] == '=') {
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i++;
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}
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for (j=0; isxdigit(buf[i]); i+=2,j++) {
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hex_to_byteval(&buf[i], &key[j]);
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}
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keysize = j;
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if (keysize != expected_keylen) {
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fprintf(stderr, "Unexpected key length: %u vs. %u\n",
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keysize, expected_keylen);
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exit(1);
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}
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continue;
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}
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/* IV = ... */
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if (strncmp(buf, "IV", 2) == 0) {
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i = 2;
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while (isspace(buf[i]) || buf[i] == '=') {
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i++;
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}
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for (j=0; isxdigit(buf[i]); i+=2,j++) {
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hex_to_byteval(&buf[i], &iv[j]);
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}
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ivsize = j;
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if (ivsize != expected_ivlen) {
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fprintf(stderr, "Unexpected IV length: %u vs. %u\n",
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ivsize, expected_ivlen);
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exit(1);
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}
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continue;
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}
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/* PT = ... */
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if (strncmp(buf, "PT", 2) == 0) {
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i = 2;
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while (isspace(buf[i]) || buf[i] == '=') {
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i++;
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}
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for (j=0; isxdigit(buf[i]); i+=2,j++) {
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hex_to_byteval(&buf[i], &plaintext[j]);
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}
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plaintextlen = j;
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if (plaintextlen != expected_ptlen) {
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fprintf(stderr, "Unexpected PT length: %u vs. %u\n",
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plaintextlen, expected_ptlen);
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exit(1);
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}
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if (!is_encrypt) {
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rv = aes_decrypt_buf(key, keysize, iv, ivsize,
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output, &outputlen, sizeof output,
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ciphertext, ciphertextlen, aad, aadlen, tag, tagsize);
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if (rv != SECSuccess) {
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fprintf(stderr, "aes_decrypt_buf failed\n");
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goto loser;
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}
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if (outputlen != plaintextlen) {
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fprintf(stderr, "aes_decrypt_buf: wrong output size\n");
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goto loser;
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}
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if (memcmp(output, plaintext, plaintextlen) != 0) {
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fprintf(stderr, "aes_decrypt_buf: wrong plaintext\n");
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goto loser;
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}
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}
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continue;
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}
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/* FAIL */
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if (strncmp(buf, "FAIL", 4) == 0) {
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plaintextlen = 0;
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PORT_Assert(!is_encrypt);
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rv = aes_decrypt_buf(key, keysize, iv, ivsize,
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output, &outputlen, sizeof output,
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ciphertext, ciphertextlen, aad, aadlen, tag, tagsize);
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if (rv != SECFailure) {
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fprintf(stderr, "aes_decrypt_buf succeeded unexpectedly\n");
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goto loser;
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}
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if (PORT_GetError() != SEC_ERROR_BAD_DATA) {
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fprintf(stderr, "aes_decrypt_buf failed with incorrect "
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"error code\n");
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goto loser;
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}
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continue;
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}
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/* AAD = ... */
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if (strncmp(buf, "AAD", 3) == 0) {
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i = 3;
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while (isspace(buf[i]) || buf[i] == '=') {
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i++;
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}
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for (j=0; isxdigit(buf[i]); i+=2,j++) {
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hex_to_byteval(&buf[i], &aad[j]);
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}
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aadlen = j;
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if (aadlen != expected_aadlen) {
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fprintf(stderr, "Unexpected AAD length: %u vs. %u\n",
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aadlen, expected_aadlen);
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exit(1);
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}
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continue;
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}
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/* CT = ... */
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if (strncmp(buf, "CT", 2) == 0) {
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i = 2;
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while (isspace(buf[i]) || buf[i] == '=') {
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i++;
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}
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for (j=0; isxdigit(buf[i]); i+=2,j++) {
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hex_to_byteval(&buf[i], &ciphertext[j]);
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}
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ciphertextlen = j;
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if (ciphertextlen != expected_ptlen) {
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fprintf(stderr, "Unexpected CT length: %u vs. %u\n",
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ciphertextlen, expected_ptlen);
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exit(1);
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}
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continue;
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}
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/* Tag = ... */
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if (strncmp(buf, "Tag", 3) == 0) {
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i = 3;
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while (isspace(buf[i]) || buf[i] == '=') {
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i++;
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}
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for (j=0; isxdigit(buf[i]); i+=2,j++) {
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hex_to_byteval(&buf[i], &tag[j]);
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}
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tagsize = j;
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if (tagsize != expected_taglen) {
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fprintf(stderr, "Unexpected tag length: %u vs. %u\n",
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tagsize, expected_taglen);
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exit(1);
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}
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if (is_encrypt) {
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rv = aes_encrypt_buf(key, keysize, iv, ivsize,
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output, &outputlen, sizeof output,
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plaintext, plaintextlen, aad, aadlen, tagsize);
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if (rv != SECSuccess) {
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fprintf(stderr, "aes_encrypt_buf failed\n");
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goto loser;
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}
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if (outputlen != plaintextlen + tagsize) {
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fprintf(stderr, "aes_encrypt_buf: wrong output size\n");
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goto loser;
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}
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if (memcmp(output, ciphertext, plaintextlen) != 0) {
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fprintf(stderr, "aes_encrypt_buf: wrong ciphertext\n");
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goto loser;
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}
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if (memcmp(output + plaintextlen, tag, tagsize) != 0) {
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fprintf(stderr, "aes_encrypt_buf: wrong tag\n");
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goto loser;
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}
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}
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continue;
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}
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}
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/* Report num_tests for the last test group. */
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printf("%u tests\n", num_tests);
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printf("%u test groups\n", test_group);
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printf("PASS\n");
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loser:
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fclose(aesresp);
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}
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int main(int argc, char **argv)
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{
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if (argc < 2) exit(1);
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NSS_NoDB_Init(NULL);
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/*************/
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/* AES */
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/*************/
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if (strcmp(argv[1], "aes") == 0) {
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/* argv[2]=kat argv[3]=gcm argv[4]=<test name>.rsp */
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if (strcmp(argv[2], "kat") == 0) {
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/* Known Answer Test (KAT) */
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aes_gcm_kat(argv[4]);
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}
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}
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NSS_Shutdown();
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return 0;
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}
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