diff options
Diffstat (limited to 'cypher.cpp')
| -rw-r--r-- | cypher.cpp | 25 |
1 files changed, 9 insertions, 16 deletions
@@ -31,8 +31,6 @@ #include <stdexcept> #include <vector> -//#include "datatypes.h" - #include "cypher.h" extern "C" { @@ -63,17 +61,15 @@ Buffer NullCypher::getBitStream(u_int32_t length, seq_nr_t seq_nr, sender_id_t s return buf; } -void AesIcmCypher::cypher(Buffer& buf, seq_nr_t seq_nr, sender_id_t sender_id) -{ -} -Buffer AesIcmCypher::getBitStream(u_int32_t length, seq_nr_t seq_nr, sender_id_t sender_id) +void AesIcmCypher::cypher(Buffer& buf, seq_nr_t seq_nr, sender_id_t sender_id) { - Buffer buf(length); extern cipher_type_t aes_icm; - err_status_t status; + err_status_t status = err_status_ok; cipher_t* cipher = NULL; - uint8_t key[20] = { + uint32_t length = 0; + + uint8_t key[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13 @@ -84,13 +80,9 @@ Buffer AesIcmCypher::getBitStream(u_int32_t length, seq_nr_t seq_nr, sender_id_t // allocate cipher status = cipher_type_alloc(&aes_icm, &cipher, 30); - if(status) - return buf; // init cipher status = cipher_init(cipher, key, direction_any); - if(status) - return buf; //set iv // where the 128-bit integer value IV SHALL be defined by the SSRC, the @@ -100,17 +92,18 @@ Buffer AesIcmCypher::getBitStream(u_int32_t length, seq_nr_t seq_nr, sender_id_t // sizeof(k_s) = 112, random - iv.v32[0] ^= 0; iv.v32[1] ^= sender_id; iv.v32[2] ^= (seq_nr >> 16); iv.v32[3] ^= (seq_nr << 16); + status = cipher_set_iv(cipher, &iv); + + length = buf.getLength(); - status = cipher_output(cipher, buf, length); + status = cipher_encrypt(cipher, buf, &length); status = cipher_dealloc(cipher); - return buf; } |