diff options
Diffstat (limited to 'set4')
| -rw-r--r-- | set4/task27.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/set4/task27.c b/set4/task27.c new file mode 100644 index 0000000..ae279cd --- /dev/null +++ b/set4/task27.c @@ -0,0 +1,29 @@ +#include "../lib/lib.h" +#include "../lib/lib2.h" +#include "../lib/lib3.h" +#include "../lib/lib4.h" +#include <time.h> + + +int main() +{ + unsigned int hex[5]; + int i; + char text[] = "Rolling on the floor lauthing"; + char *key = "ROFL"; + + sha1_hmac(hex, text, strlen(text), key, strlen(key)); + for(i=0; i<5; i++) { + printf("%08x", hex[i]); + } + printf("\n"); + + if(sha1_hmac_verify(hex, text, strlen(text), key, strlen(key))) + printf("MACs are equal\n"); + + // tamper message change R to r + text[0] = 'r'; + + if(!sha1_hmac_verify(hex, text, strlen(text), key, strlen(key))) + printf("MACs of tampered message are NOT equal\n"); +} |