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Diffstat (limited to 'src/lib/tests/crypt_test.c')
-rw-r--r--src/lib/tests/crypt_test.c430
1 files changed, 263 insertions, 167 deletions
diff --git a/src/lib/tests/crypt_test.c b/src/lib/tests/crypt_test.c
index 028c4eb5..2d752238 100644
--- a/src/lib/tests/crypt_test.c
+++ b/src/lib/tests/crypt_test.c
@@ -30,6 +30,7 @@
#include <stdio.h>
#define TEST_PACKET_SIZE 1500
+#define TEST_N_PACKETS 1000
extern const uint16_t crypt_supported_nids[];
extern const uint16_t md_supported_nids[];
@@ -39,9 +40,10 @@ static int test_crypt_create_destroy(void)
struct crypt_ctx * ctx;
uint8_t key[SYMMKEYSZ];
struct crypt_sk sk = {
- .nid = NID_aes_256_gcm,
- .key = key,
- .rot_bit = KEY_ROTATION_BIT
+ .nid = NID_aes_256_gcm,
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_INIT
};
TEST_START();
@@ -67,18 +69,27 @@ static int test_crypt_create_destroy(void)
static int test_crypt_encrypt_decrypt(int nid)
{
uint8_t pkt[TEST_PACKET_SIZE];
- struct crypt_ctx * ctx;
+ struct crypt_ctx * tx;
+ struct crypt_ctx * rx;
uint8_t key[SYMMKEYSZ];
- struct crypt_sk sk = {
- .nid = NID_aes_256_gcm,
- .key = key,
- .rot_bit = KEY_ROTATION_BIT
+ struct crypt_sk sk_tx = {
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_INIT
+ };
+ struct crypt_sk sk_rx = {
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_RESP
};
buffer_t in;
buffer_t out;
buffer_t out2;
const char * cipher;
+ sk_tx.nid = nid;
+ sk_rx.nid = nid;
+
cipher = crypt_nid_to_str(nid);
TEST_START("(%s)", cipher);
@@ -92,53 +103,63 @@ static int test_crypt_encrypt_decrypt(int nid)
goto fail_init;
}
- ctx = crypt_create_ctx(&sk);
- if (ctx == NULL) {
- printf("Failed to initialize cryptography.\n");
+ tx = crypt_create_ctx(&sk_tx);
+ if (tx == NULL) {
+ printf("Failed to initialize TX cryptography.\n");
goto fail_init;
}
+ rx = crypt_create_ctx(&sk_rx);
+ if (rx == NULL) {
+ printf("Failed to initialize RX cryptography.\n");
+ goto fail_tx;
+ }
+
in.len = sizeof(pkt);
in.data = pkt;
- if (crypt_encrypt(ctx, in, &out) < 0) {
+ if (crypt_encrypt(tx, in, &out) < 0) {
printf("Encryption failed.\n");
goto fail_encrypt;
}
if (out.len < in.len) {
printf("Encryption returned too little data.\n");
- goto fail_encrypt;
+ goto fail_chk;
}
- if (crypt_decrypt(ctx, out, &out2) < 0) {
+ if (crypt_decrypt(rx, out, &out2) < 0) {
printf("Decryption failed.\n");
goto fail_decrypt;
}
if (out2.len != in.len) {
printf("Decrypted data length does not match original.\n");
- goto fail_chk;
+ goto fail_chk2;
}
if (memcmp(in.data, out2.data, in.len) != 0) {
printf("Decrypted data does not match original.\n");
- goto fail_chk;
+ goto fail_chk2;
}
- crypt_destroy_ctx(ctx);
freebuf(out2);
freebuf(out);
+ crypt_destroy_ctx(rx);
+ crypt_destroy_ctx(tx);
TEST_SUCCESS("(%s)", cipher);
return TEST_RC_SUCCESS;
- fail_chk:
+ fail_chk2:
freebuf(out2);
fail_decrypt:
+ fail_chk:
freebuf(out);
fail_encrypt:
- crypt_destroy_ctx(ctx);
+ crypt_destroy_ctx(rx);
+ fail_tx:
+ crypt_destroy_ctx(tx);
fail_init:
TEST_FAIL("(%s)", cipher);
return TEST_RC_FAIL;
@@ -155,6 +176,214 @@ static int test_encrypt_decrypt_all(void)
return ret;
}
+static int test_crypt_multi_packet(int nid)
+{
+ uint8_t pkt[TEST_PACKET_SIZE];
+ struct crypt_ctx * tx;
+ struct crypt_ctx * rx;
+ uint8_t key[SYMMKEYSZ];
+ struct crypt_sk sk_tx = {
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_INIT
+ };
+ struct crypt_sk sk_rx = {
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_RESP
+ };
+ buffer_t in;
+ buffer_t enc;
+ buffer_t dec;
+ const char * cipher;
+ int i;
+
+ sk_tx.nid = nid;
+ sk_rx.nid = nid;
+
+ cipher = crypt_nid_to_str(nid);
+ TEST_START("(%s)", cipher);
+
+ if (random_buffer(key, sizeof(key)) < 0) {
+ printf("Failed to generate random key.\n");
+ goto fail_init;
+ }
+
+ if (random_buffer(pkt, sizeof(pkt)) < 0) {
+ printf("Failed to generate random data.\n");
+ goto fail_init;
+ }
+
+ tx = crypt_create_ctx(&sk_tx);
+ if (tx == NULL) {
+ printf("Failed to create TX context.\n");
+ goto fail_init;
+ }
+
+ rx = crypt_create_ctx(&sk_rx);
+ if (rx == NULL) {
+ printf("Failed to create RX context.\n");
+ goto fail_tx;
+ }
+
+ in.len = sizeof(pkt);
+ in.data = pkt;
+
+ for (i = 0; i < TEST_N_PACKETS; i++) {
+ if (crypt_encrypt(tx, in, &enc) < 0) {
+ printf("Encryption failed at packet %d.\n", i);
+ goto fail_rx;
+ }
+
+ if (crypt_decrypt(rx, enc, &dec) < 0) {
+ printf("Decryption failed at packet %d.\n", i);
+ freebuf(enc);
+ goto fail_rx;
+ }
+
+ if (dec.len != in.len ||
+ memcmp(in.data, dec.data, in.len) != 0) {
+ printf("Data mismatch at packet %d.\n", i);
+ freebuf(dec);
+ freebuf(enc);
+ goto fail_rx;
+ }
+
+ freebuf(dec);
+ freebuf(enc);
+ }
+
+ crypt_destroy_ctx(rx);
+ crypt_destroy_ctx(tx);
+
+ TEST_SUCCESS("(%s)", cipher);
+
+ return TEST_RC_SUCCESS;
+ fail_rx:
+ crypt_destroy_ctx(rx);
+ fail_tx:
+ crypt_destroy_ctx(tx);
+ fail_init:
+ TEST_FAIL("(%s)", cipher);
+ return TEST_RC_FAIL;
+}
+
+static int test_multi_packet_all(void)
+{
+ int ret = 0;
+ int i;
+
+ for (i = 0; crypt_supported_nids[i] != NID_undef; i++)
+ ret |= test_crypt_multi_packet(crypt_supported_nids[i]);
+
+ return ret;
+}
+
+static int test_crypt_aad_tamper(int nid)
+{
+ uint8_t pkt[TEST_PACKET_SIZE];
+ struct crypt_ctx * tx;
+ struct crypt_ctx * rx;
+ uint8_t key[SYMMKEYSZ];
+ struct crypt_sk sk_tx = {
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_INIT
+ };
+ struct crypt_sk sk_rx = {
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_RESP
+ };
+ buffer_t in;
+ buffer_t enc;
+ buffer_t dec;
+ const char * cipher;
+
+ sk_tx.nid = nid;
+ sk_rx.nid = nid;
+
+ cipher = crypt_nid_to_str(nid);
+ TEST_START("(%s)", cipher);
+
+ if (random_buffer(key, sizeof(key)) < 0) {
+ printf("Failed to generate random key.\n");
+ goto fail_init;
+ }
+
+ if (random_buffer(pkt, sizeof(pkt)) < 0) {
+ printf("Failed to generate random data.\n");
+ goto fail_init;
+ }
+
+ tx = crypt_create_ctx(&sk_tx);
+ if (tx == NULL) {
+ printf("Failed to create TX context.\n");
+ goto fail_init;
+ }
+
+ rx = crypt_create_ctx(&sk_rx);
+ if (rx == NULL) {
+ printf("Failed to create RX context.\n");
+ goto fail_tx;
+ }
+
+ /* Only AEAD ciphers bind the selector as AAD. */
+ if (crypt_get_tagsz(tx) == 0) {
+ crypt_destroy_ctx(rx);
+ crypt_destroy_ctx(tx);
+
+ TEST_SUCCESS("(%s)", cipher);
+
+ return TEST_RC_SUCCESS;
+ }
+
+ in.len = sizeof(pkt);
+ in.data = pkt;
+
+ if (crypt_encrypt(tx, in, &enc) < 0) {
+ printf("Encryption failed.\n");
+ goto fail_rx;
+ }
+
+ /* Flip a seq byte: epoch/node stay valid so the AEAD tag rejects. */
+ enc.data[5] ^= 0x01;
+
+ if (crypt_decrypt(rx, enc, &dec) == 0) {
+ printf("Decryption accepted a tampered selector.\n");
+ freebuf(dec);
+ freebuf(enc);
+ goto fail_rx;
+ }
+
+ freebuf(enc);
+
+ crypt_destroy_ctx(rx);
+ crypt_destroy_ctx(tx);
+
+ TEST_SUCCESS("(%s)", cipher);
+
+ return TEST_RC_SUCCESS;
+ fail_rx:
+ crypt_destroy_ctx(rx);
+ fail_tx:
+ crypt_destroy_ctx(tx);
+ fail_init:
+ TEST_FAIL("(%s)", cipher);
+ return TEST_RC_FAIL;
+}
+
+static int test_aad_tamper_all(void)
+{
+ int ret = 0;
+ int i;
+
+ for (i = 0; crypt_supported_nids[i] != NID_undef; i++)
+ ret |= test_crypt_aad_tamper(crypt_supported_nids[i]);
+
+ return ret;
+}
+
#ifdef HAVE_OPENSSL
#include <openssl/evp.h>
#include <openssl/obj_mac.h>
@@ -256,109 +485,17 @@ static int test_md_nid_values(void)
}
#endif
-static int test_key_rotation(void)
+static int test_crypt_headsz(void)
{
- uint8_t pkt[TEST_PACKET_SIZE];
- struct crypt_ctx * tx_ctx;
- struct crypt_ctx * rx_ctx;
- uint8_t key[SYMMKEYSZ];
- struct crypt_sk sk = {
- .nid = NID_aes_256_gcm,
- .key = key,
- .rot_bit = 7
- };
- buffer_t in;
- buffer_t enc;
- buffer_t dec;
- uint32_t i;
- uint32_t threshold;
-
- TEST_START();
-
- if (random_buffer(key, sizeof(key)) < 0) {
- printf("Failed to generate random key.\n");
- goto fail;
- }
-
- if (random_buffer(pkt, sizeof(pkt)) < 0) {
- printf("Failed to generate random data.\n");
- goto fail;
- }
-
- tx_ctx = crypt_create_ctx(&sk);
- if (tx_ctx == NULL) {
- printf("Failed to create TX context.\n");
- goto fail;
- }
-
- rx_ctx = crypt_create_ctx(&sk);
- if (rx_ctx == NULL) {
- printf("Failed to create RX context.\n");
- goto fail_tx;
- }
-
- in.len = sizeof(pkt);
- in.data = pkt;
-
- threshold = (1U << sk.rot_bit);
-
- /* Encrypt and decrypt across multiple rotations */
- for (i = 0; i < threshold * 3; i++) {
- if (crypt_encrypt(tx_ctx, in, &enc) < 0) {
- printf("Encryption failed at packet %u.\n", i);
- goto fail_rx;
- }
-
- if (crypt_decrypt(rx_ctx, enc, &dec) < 0) {
- printf("Decryption failed at packet %u.\n", i);
- freebuf(enc);
- goto fail_rx;
- }
-
- if (dec.len != in.len ||
- memcmp(in.data, dec.data, in.len) != 0) {
- printf("Data mismatch at packet %u.\n", i);
- freebuf(dec);
- freebuf(enc);
- goto fail_rx;
- }
-
- freebuf(dec);
- freebuf(enc);
- }
-
- crypt_destroy_ctx(rx_ctx);
- crypt_destroy_ctx(tx_ctx);
-
- TEST_SUCCESS();
-
- return TEST_RC_SUCCESS;
- fail_rx:
- crypt_destroy_ctx(rx_ctx);
- fail_tx:
- crypt_destroy_ctx(tx_ctx);
- fail:
- TEST_FAIL();
- return TEST_RC_FAIL;
-}
-
-static int test_key_phase_bit(void)
-{
- uint8_t pkt[TEST_PACKET_SIZE];
struct crypt_ctx * ctx;
uint8_t key[SYMMKEYSZ];
struct crypt_sk sk = {
- .nid = NID_aes_256_gcm,
- .key = key,
- .rot_bit = 7
+ .nid = NID_aes_256_gcm,
+ .key = key,
+ .epoch = 0,
+ .role = CRYPT_ROLE_INIT
};
- buffer_t in;
- buffer_t out;
- uint32_t count;
- uint32_t threshold;
- uint8_t phase_before;
- uint8_t phase_after;
- int ivsz;
+ int headsz;
TEST_START();
@@ -367,58 +504,15 @@ static int test_key_phase_bit(void)
goto fail;
}
- if (random_buffer(pkt, sizeof(pkt)) < 0) {
- printf("Failed to generate random data.\n");
- goto fail;
- }
-
ctx = crypt_create_ctx(&sk);
if (ctx == NULL) {
printf("Failed to initialize cryptography.\n");
goto fail;
}
- ivsz = crypt_get_ivsz(ctx);
- if (ivsz <= 0) {
- printf("Invalid IV size.\n");
- goto fail_ctx;
- }
-
- in.len = sizeof(pkt);
- in.data = pkt;
-
- /* Encrypt packets up to just before rotation threshold */
- threshold = (1U << sk.rot_bit);
-
- /* Encrypt threshold - 1 packets (indices 0 to threshold-2) */
- for (count = 0; count < threshold - 1; count++) {
- if (crypt_encrypt(ctx, in, &out) < 0) {
- printf("Encryption failed at count %u.\n", count);
- goto fail_ctx;
- }
- freebuf(out);
- }
-
- /* Packet at index threshold-1: phase should still be initial */
- if (crypt_encrypt(ctx, in, &out) < 0) {
- printf("Encryption failed before rotation.\n");
- goto fail_ctx;
- }
- phase_before = (out.data[0] & 0x80) ? 1 : 0;
- freebuf(out);
-
- /* Packet at index threshold: phase should have toggled */
- if (crypt_encrypt(ctx, in, &out) < 0) {
- printf("Encryption failed at rotation threshold.\n");
- goto fail_ctx;
- }
- phase_after = (out.data[0] & 0x80) ? 1 : 0;
- freebuf(out);
-
- /* Phase bit should have toggled */
- if (phase_before == phase_after) {
- printf("Phase bit did not toggle: before=%u, after=%u.\n",
- phase_before, phase_after);
+ headsz = crypt_get_headsz(ctx);
+ if (headsz != 6) {
+ printf("Unexpected header size: %d (expected 6).\n", headsz);
goto fail_ctx;
}
@@ -447,11 +541,13 @@ int crypt_test(int argc,
#ifdef HAVE_OPENSSL
ret |= test_cipher_nid_values();
ret |= test_md_nid_values();
- ret |= test_key_rotation();
- ret |= test_key_phase_bit();
+ ret |= test_multi_packet_all();
+ ret |= test_aad_tamper_all();
+ ret |= test_crypt_headsz();
#else
- (void) test_key_rotation;
- (void) test_key_phase_bit;
+ (void) test_multi_packet_all;
+ (void) test_aad_tamper_all;
+ (void) test_crypt_headsz;
return TEST_RC_SKIP;
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2026-07-01 22:37:54 +0000