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Only support 32-byte keys in ChaCha20{,Aligned}

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This commit is contained in:
Pieter Wuille
2022-09-21 17:39:48 -04:00
parent f21994a02e
commit 62ec713961
9 changed files with 46 additions and 53 deletions
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11
src/test/crypto_tests.cpp
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@@ -133,8 +133,9 @@ static void TestAES256CBC(const std::string &hexkey, const std::string &hexiv, b
static void TestChaCha20(const std::string &hex_message, const std::string &hexkey, uint64_t nonce, uint64_t seek, const std::string& hexout)
{
std::vector<unsigned char> key = ParseHex(hexkey);
assert(key.size() == 32);
std::vector<unsigned char> m = ParseHex(hex_message);
ChaCha20 rng(key.data(), key.size());
ChaCha20 rng(key.data());
rng.SetIV(nonce);
rng.Seek64(seek);
std::vector<unsigned char> out = ParseHex(hexout);
@@ -460,7 +461,7 @@ BOOST_AUTO_TEST_CASE(aes_cbc_testvectors) {
BOOST_AUTO_TEST_CASE(chacha20_testvector)
{
// Test vector from RFC 7539
// Test vectors from RFC 7539
// test encryption
TestChaCha20("4c616469657320616e642047656e746c656d656e206f662074686520636c617373206f66202739393a204966204920636f756"
@@ -503,12 +504,12 @@ BOOST_AUTO_TEST_CASE(chacha20_testvector)
BOOST_AUTO_TEST_CASE(chacha20_midblock)
{
auto key = ParseHex("0000000000000000000000000000000000000000000000000000000000000000");
ChaCha20 c20{key.data(), 32};
ChaCha20 c20{key.data()};
// get one block of keystream
unsigned char block[64];
c20.Keystream(block, CHACHA20_ROUND_OUTPUT);
unsigned char b1[5], b2[7], b3[52];
c20 = ChaCha20{key.data(), 32};
c20 = ChaCha20{key.data()};
c20.Keystream(b1, 5);
c20.Keystream(b2, 7);
c20.Keystream(b3, 52);
@@ -635,7 +636,7 @@ static void TestChaCha20Poly1305AEAD(bool must_succeed, unsigned int expected_aa
ChaCha20Poly1305AEAD aead(aead_K_1.data(), aead_K_1.size(), aead_K_2.data(), aead_K_2.size());
// create a chacha20 instance to compare against
ChaCha20 cmp_ctx(aead_K_1.data(), 32);
ChaCha20 cmp_ctx(aead_K_1.data());
// encipher
bool res = aead.Crypt(seqnr_payload, seqnr_aad, aad_pos, ciphertext_buf.data(), ciphertext_buf.size(), plaintext_buf.data(), plaintext_buf.size(), true);