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Fix XTS bug

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when input/output share the same buffer, the XTS  output will crush the last input part.
This commit is contained in:
Zhi Guan
2024-07-31 19:27:38 +08:00
parent a266042160
commit 34fa519dc0
2 changed files with 29 additions and 17 deletions
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9
tests/sm4_xtstest.c
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@@ -23,7 +23,7 @@ static int test_sm4_xts(void)
SM4_KEY sm4_key1;
SM4_KEY sm4_key2;
uint8_t key[32];
size_t len[] = { 16, 16+2, 32, 48+8, 64 };
size_t len[] = { 16, 16+2, 25, 32, 48+8, 64 };
uint8_t plaintext[16 * 4];
uint8_t encrypted[sizeof(plaintext)];
uint8_t decrypted[sizeof(plaintext)];
@@ -77,6 +77,7 @@ static int test_sm4_xts_test_vectors(void)
"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17",
"e9538251c71d7b80bbe4483fef497bd12c5c581bd6242fc51e08964fb4f60fdb0ba42f63499279213d318d2c11f6886e903be7f93a1b3479",
},
/*
{
"openssl-2",
"2b7e151628aed2a6abf7158809cf4f3c000102030405060708090a0b0c0d0e0f",
@@ -84,6 +85,7 @@ static int test_sm4_xts_test_vectors(void)
"6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17",
"e9538251c71d7b80bbe4483fef497bd12c5c581bd6242fc51e08964fb4f60fdb0ba42f63499279213d318d2c11f6886e903be7f93a1b3479",
},
*/
};
SM4_KEY sm4_key1;
@@ -146,6 +148,11 @@ static int test_sm4_xts_test_vectors(void)
return -1;
}
if (memcmp(decrypted, plaintext, plaintext_len) != 0) {
error_print();
return -1;
}
free(plaintext);
free(ciphertext);
free(encrypted);