I was following Tobias Bayer's example code to perform some AES
encryption. Code available at:
http://www.tobias-bayer.de/main/tutorials/libgcrypt.html
I made a simple modification to allow command line input to
demonstrate the problem, changing only the following lines:
int main(int argc, char *argv[])
{
const int BLOCKSIZE = 16;
int TEXTLEN = strlen(argv[1]);
unsigned char* plaintext = argv[1];
When I run the program (using libgcrypt 1.2.0, I realize it's out of
date, trying to get the sysadmin to update it), some input strings
are decrypted back with extra characters on the end. Note the
different length after decryption as well:
angus@dev:~/aes_test>./aes 12345678901
Key is: 92 75 26 AD C8 BC 36 C7 C 52 8 E3 BF 13 8C F9
Encrypting plaintext: 12345678901...
plaintext len: 11
Resulting ciphertext (hex): BA C6 2A 23 DC 39 0 D5 7E 48 CB
Decrypted text len: 11
Decrypted text: 12345678901
angus@dev:~/aes_test>./aes 123456789012
Key is: FF 5 76 50 41 9F 2B A0 1B 2F 3 D2 B0 9 A8 9D
Encrypting plaintext: 123456789012...
plaintext len: 12
Resulting ciphertext (hex): D6 FD 6E 93 53 4B 1F 1B 4F 6 41 99
Decrypted text len: 15
Decrypted text: 123456789012?
Is this a known bug in 1.2.0? I didn't see anything in the archives
or the change log, but didn't really find release notes.
Thanks in advance,
Steve Cochran
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Gcrypt-devel@gnupg.org
http://lists.gnupg.org/mailman/listinfo/gcrypt-devel
encryption. Code available at:
http://www.tobias-bayer.de/main/tutorials/libgcrypt.html
I made a simple modification to allow command line input to
demonstrate the problem, changing only the following lines:
int main(int argc, char *argv[])
{
const int BLOCKSIZE = 16;
int TEXTLEN = strlen(argv[1]);
unsigned char* plaintext = argv[1];
When I run the program (using libgcrypt 1.2.0, I realize it's out of
date, trying to get the sysadmin to update it), some input strings
are decrypted back with extra characters on the end. Note the
different length after decryption as well:
angus@dev:~/aes_test>./aes 12345678901
Key is: 92 75 26 AD C8 BC 36 C7 C 52 8 E3 BF 13 8C F9
Encrypting plaintext: 12345678901...
plaintext len: 11
Resulting ciphertext (hex): BA C6 2A 23 DC 39 0 D5 7E 48 CB
Decrypted text len: 11
Decrypted text: 12345678901
angus@dev:~/aes_test>./aes 123456789012
Key is: FF 5 76 50 41 9F 2B A0 1B 2F 3 D2 B0 9 A8 9D
Encrypting plaintext: 123456789012...
plaintext len: 12
Resulting ciphertext (hex): D6 FD 6E 93 53 4B 1F 1B 4F 6 41 99
Decrypted text len: 15
Decrypted text: 123456789012?
Is this a known bug in 1.2.0? I didn't see anything in the archives
or the change log, but didn't really find release notes.
Thanks in advance,
Steve Cochran
_______________________________________________
Gcrypt-devel mailing list
Gcrypt-devel@gnupg.org
http://lists.gnupg.org/mailman/listinfo/gcrypt-devel