/**
Self-test the hash
@return 0 if successful, CRYPT_NOP if self-tests have been disabled
*/
int md2_test(void)
{
static const struct {
char *msg;
byte md[16];
} tests[] = {
{ "",
{0x83,0x50,0xe5,0xa3,0xe2,0x4c,0x15,0x3d,
0xf2,0x27,0x5c,0x9f,0x80,0x69,0x27,0x73
}
},
{ "a",
{0x32,0xec,0x01,0xec,0x4a,0x6d,0xac,0x72,
0xc0,0xab,0x96,0xfb,0x34,0xc0,0xb5,0xd1
}
},
{ "message digest",
{0xab,0x4f,0x49,0x6b,0xfb,0x2a,0x53,0x0b,
0x21,0x9f,0xf3,0x30,0x31,0xfe,0x06,0xb0
}
},
{ "abcdefghijklmnopqrstuvwxyz",
{0x4e,0x8d,0xdf,0xf3,0x65,0x02,0x92,0xab,
0x5a,0x41,0x08,0xc3,0xaa,0x47,0x94,0x0b
}
},
{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
{0xda,0x33,0xde,0xf2,0xa4,0x2d,0xf1,0x39,
0x75,0x35,0x28,0x46,0xc3,0x03,0x38,0xcd
}
},
{ "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
{0xd5,0x97,0x6f,0x79,0xd8,0x3d,0x3a,0x0d,
0xc9,0x80,0x6c,0x3c,0x66,0xf3,0xef,0xd8
}
}
};
int i;
md2Param mymd, * mp = &mymd;
byte buf[16];
for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
md2Reset(mp);
md2Update(mp, (byte*)tests[i].msg, strlen(tests[i].msg));
md2Digest(mp, buf);
if (memcmp(buf, tests[i].md, 16) != 0) {
return 5;
}
}
return 0;
}
error_t md2Compute(const void *data, size_t length, uint8_t *digest)
{
//Allocate a memory buffer to hold the MD2 context
Md2Context *context = osAllocMem(sizeof(Md2Context));
//Failed to allocate memory?
if(!context) return ERROR_OUT_OF_MEMORY;
//Initialize the MD2 context
md2Init(context);
//Digest the message
md2Update(context, data, length);
//Finalize the MD2 message digest
md2Final(context, digest);
//Free previously allocated memory
osFreeMem(context);
//Successful processing
return NO_ERROR;
}
