TeaSpeak/tomcrypt
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rsa_test: improve a bit

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This commit is contained in:
Steffen Jaeckel 2014-08-21 12:43:42 +02:00
parent 536a199203
commit f86d36c676
1 changed files with 31 additions and 25 deletions
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56
testprof/rsa_test.c
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@ -100,6 +100,19 @@ static int rsa_compat_test(void)
return 0; return 0;
} }
static void _rsa_testPrint(const char* what, const unsigned char* p, const unsigned long l)
{
unsigned long x;
fprintf(stderr, "%s contents: \n", what);
for (x = 0; x < l; ) {
fprintf(stderr, "%02x ", p[x]);
if (!(++x % 16)) {
fprintf(stderr, "\n");
}
}
fprintf(stderr, "\n");
}
int rsa_test(void) int rsa_test(void)
{ {
unsigned char in[1024], out[1024], tmp[1024]; unsigned char in[1024], out[1024], tmp[1024];
@ -186,24 +199,9 @@ for (cnt = 0; cnt < len; ) {
return 1; return 1;
} }
if (len2 != rsa_msgsize || memcmp(tmp, in, rsa_msgsize)) { if (len2 != rsa_msgsize || memcmp(tmp, in, rsa_msgsize)) {
unsigned long x;
fprintf(stderr, "\nrsa_decrypt_key mismatch, len %lu (second decrypt)\n", len2); fprintf(stderr, "\nrsa_decrypt_key mismatch, len %lu (second decrypt)\n", len2);
fprintf(stderr, "Original contents: \n"); _rsa_testPrint("Original", in, rsa_msgsize);
for (x = 0; x < rsa_msgsize; ) { _rsa_testPrint("Output", tmp, len2);
fprintf(stderr, "%02x ", in[x]);
if (!(++x % 16)) {
fprintf(stderr, "\n");
}
}
fprintf(stderr, "\n");
fprintf(stderr, "Output contents: \n");
for (x = 0; x < rsa_msgsize; ) {
fprintf(stderr, "%02x ", out[x]);
if (!(++x % 16)) {
fprintf(stderr, "\n");
}
}
fprintf(stderr, "\n");
return 1; return 1;
} }
} }
@ -232,6 +230,8 @@ for (cnt = 0; cnt < len; ) {
} }
if (len2 != rsa_msgsize || memcmp(tmp, in, rsa_msgsize)) { if (len2 != rsa_msgsize || memcmp(tmp, in, rsa_msgsize)) {
fprintf(stderr, "rsa_decrypt_key mismatch len %lu", len2); fprintf(stderr, "rsa_decrypt_key mismatch len %lu", len2);
_rsa_testPrint("Original", in, rsa_msgsize);
_rsa_testPrint("Output", tmp, len2);
return 1; return 1;
} }
} }
@ -250,10 +250,16 @@ for (cnt = 0; cnt < len; ) {
fprintf(stderr, "rsa_decrypt_key_ex failed, %d, %d", stat, stat2); fprintf(stderr, "rsa_decrypt_key_ex failed, %d, %d", stat, stat2);
return 1; return 1;
} }
if (len2 != rsa_msgsize || memcmp(tmp, in, rsa_msgsize)) { if (len2 != rsa_msgsize) {
fprintf(stderr, "rsa_decrypt_key_ex mismatch len %lu", len2); fprintf(stderr, "rsa_decrypt_key_ex mismatch len %lu", len2);
return 1; return 1;
} }
if (memcmp(tmp, in, rsa_msgsize)) {
fprintf(stderr, "rsa_decrypt_key_ex mismatch data");
_rsa_testPrint("Original", in, rsa_msgsize);
_rsa_testPrint("Output", tmp, rsa_msgsize);
return 1;
}
} }
/* sign a message (unsalted, lower cholestorol and Atkins approved) now */ /* sign a message (unsalted, lower cholestorol and Atkins approved) now */
@ -354,10 +360,12 @@ for (cnt = 0; cnt < len; ) {
* (4) Forge the structure of PKCS#1-EMSA encoded data * (4) Forge the structure of PKCS#1-EMSA encoded data
* (4.1) Search for start and end of the padding string * (4.1) Search for start and end of the padding string
* (4.2) Move the signature to the front of the padding string * (4.2) Move the signature to the front of the padding string
* (4.3) Fill the message until the end with random data * (4.3) Zero the message until the end
* (5) Encrypt the package again * (5) Encrypt the package again
* (6) Profit :) * (6) Profit :)
* Verification process should succeed, but result should not be valid * For PS lengths < 8: the verification process should fail
* For PS lengths >= 8: the verification process should succeed
* For all PS lengths: the result should not be valid
*/ */
unsigned char* p = in; unsigned char* p = in;
@ -380,7 +388,7 @@ for (cnt = 0; cnt < len; ) {
printf("\nBefore:"); printf("\nBefore:");
for (cnt = 0; cnt < len3; ++cnt) { for (cnt = 0; cnt < len3; ++cnt) {
if (cnt%32 == 0) if (cnt%32 == 0)
printf("\n%3d:", cnt); printf("\n%3lu:", cnt);
printf(" %02x", p3[cnt]); printf(" %02x", p3[cnt]);
} }
#endif #endif
@ -397,15 +405,13 @@ for (cnt = 0; cnt < len; ) {
memmove(&p3[cnt+i], &p3[cnt2], len3-cnt2); memmove(&p3[cnt+i], &p3[cnt2], len3-cnt2);
/* (4.3) */ /* (4.3) */
for (cnt = cnt + len3-cnt2+i; cnt < len; ++cnt) { for (cnt = cnt + len3-cnt2+i; cnt < len; ++cnt) {
do { p3[cnt] = 0;
p3[cnt] = (unsigned char)rand();
} while (p3[cnt] == 0);
} }
#if 0 #if 0
printf("\nAfter:"); printf("\nAfter:");
for (cnt = 0; cnt < len3; ++cnt) { for (cnt = 0; cnt < len3; ++cnt) {
if (cnt%32 == 0) if (cnt%32 == 0)
printf("\n%3d:", cnt); printf("\n%3lu:", cnt);
printf(" %02x", p3[cnt]); printf(" %02x", p3[cnt]);
} }
printf("\n"); printf("\n");