124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
/*
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==============================================================================
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Name : Poly1305test.c
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Author : polfosol
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Version : 1.1.1.1
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Copyright : copyright © 2022 - polfosol
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Description : illustrating how the test vectors of Poly1305-AES are processed
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==============================================================================
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*/
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#include <stdio.h>
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#include "../micro_aes.h"
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#define TESTFILEPATH "Poly1305AES128.tv"
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static void str2bytes(const char* hex, uint8_t* bytes)
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{
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unsigned shl = 0;
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for (--bytes; *hex; ++hex)
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{
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if (*hex < '0' || 'f' < *hex) continue;
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if ((shl ^= 4) != 0) *++bytes = 0;
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*bytes |= (*hex % 16 + (*hex > '9') * 9) << shl;
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}
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}
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static void bytes2str(const uint8_t* bytes, char* str, const size_t len)
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{
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const char offset = 0x27; /* offset must be 7 for uppercase */
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size_t i = len + len, shr = 0;
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for (str[i] = 0; i--; shr ^= 4)
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{
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str[i] = bytes[i / 2] >> shr & 0xF | '0';
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if (str[i] > '9') str[i] += offset;
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}
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}
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static int ciphertest(uint8_t* key, uint8_t* nnc, uint8_t* d, uint8_t* m, size_t ds, char* r)
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{
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char sk[2*AES_KEY_SIZE + 33], smac[33], msg[30];
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uint8_t tmp[32], t = 0;
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sprintf(msg, "%s", "passed the test");
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AES_Poly1305(key, nnc, d, ds, tmp);
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t = memcmp(m, tmp, 16);
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if (t) sprintf(msg, "%s", "failed");
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bytes2str(key, sk, AES_KEY_SIZE + 16);
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bytes2str(m, smac, 16);
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sprintf(r, "%s\nK: %s\npoly: %s\n", msg, sk, smac);
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return t;
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}
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int main()
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{
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const char *linehdr[] = { "Keys = ", "Nonce = ", "Msg = ", "PolyMac = " };
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char buffer[0x20100], *value = "";
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size_t pass = 0, nf = 0, sk = 0, sd = 0;
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uint8_t i, n = 0, key[AES_KEY_SIZE + 16], nc[16], d[0x10100], m[16];
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FILE *fp, *fs, *ferr;
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fp = fopen(TESTFILEPATH, "r");
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fs = fopen("passed.log", "w");
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ferr = fopen("failed.log", "w");
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if (fp == NULL)
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{
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printf("File not found: %s\n", TESTFILEPATH);
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return 1;
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}
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if (!fs || !ferr) return 1;
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while (fgets(buffer, sizeof buffer, fp) != NULL)
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{
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buffer[strcspn(buffer, "\n")] = 0;
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if (strlen(buffer) < 4) continue;
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for (i = 0; i < 4; i++)
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{
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if (strncmp(buffer, linehdr[i], strlen(linehdr[i])) == 0)
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{
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value = strrchr(buffer, ' ') + 1;
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break;
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}
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}
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switch (i)
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{
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case 0:
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sk = strlen(value) / 2;
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if (sk == AES_KEY_SIZE + 16) str2bytes(value, key);
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break;
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case 1:
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str2bytes(value, nc);
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break;
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case 2:
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sd = strlen(value) / 2;
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str2bytes(value, d);
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++n;
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break;
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case 3:
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str2bytes(value, m);
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++n;
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break;
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}
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if (n == 2)
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{
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if (sk == AES_KEY_SIZE + 16)
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{
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n = ciphertest(key, nc, d, m, sd, buffer);
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fprintf(n ? ferr : fs, "%s\n", buffer); /* save the log */
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i = n == 0 ? ++pass : ++nf;
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}
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n = 0;
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}
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}
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printf ("Poly1305 test cases: %d\nsuccessful: %d\nfailed: %d\n", pass + nf, pass, nf);
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fclose(fp); fclose(fs); fclose(ferr);
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if (nf == 0)
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{
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remove("passed.log"); remove("failed.log");
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}
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return 0;
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}
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