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LibCrypto: Add wrapper to EVP_PKEY_get_octet_string_param

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This commit is contained in:
Tete17
2025-12-29 23:55:12 +01:00
committed by Shannon Booth
parent 89dbdd3411
commit cabcf3ed66
3 changed files with 16 additions and 12 deletions
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11
Libraries/LibCrypto/OpenSSL.cpp
View File

@@ -67,4 +67,15 @@ ErrorOr<StringView> hash_kind_to_openssl_digest_name(Hash::HashKind hash)
}
}
ErrorOr<ByteBuffer> get_byte_buffer_param_from_key(OpenSSL_PKEY& key, char const* key_name)
{
size_t size;
OPENSSL_TRY(EVP_PKEY_get_octet_string_param(key.ptr(), key_name, nullptr, 0, &size));
auto buffer = TRY(ByteBuffer::create_uninitialized(size));
OPENSSL_TRY(EVP_PKEY_get_octet_string_param(key.ptr(), key_name, buffer.data(), buffer.size(), &size));
return buffer;
}
}

2
Libraries/LibCrypto/OpenSSL.h
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@@ -125,4 +125,6 @@ ErrorOr<UnsignedBigInteger> openssl_bignum_to_unsigned_big_integer(OpenSSL_BN co
ErrorOr<StringView> hash_kind_to_openssl_digest_name(Hash::HashKind hash);
ErrorOr<ByteBuffer> get_byte_buffer_param_from_key(OpenSSL_PKEY& key, char const* key_name);
}

15
Libraries/LibCrypto/PK/MLDSA.cpp
View File

@@ -157,18 +157,9 @@ ErrorOr<MLDSA::KeyPairType> MLDSA::generate_key_pair(MLDSASize size, ByteBuffer
auto* key_ptr = key.ptr();
OPENSSL_TRY(EVP_PKEY_generate(ctx.ptr(), &key_ptr));
// We reserve enough memory for the key size to be able to fit them all
auto pub = TRY(ByteBuffer::create_uninitialized(2592));
auto priv = TRY(ByteBuffer::create_uninitialized(4896));
seed = TRY(ByteBuffer::create_uninitialized(32));
size_t priv_len, pub_len, seed_len;
OPENSSL_TRY(EVP_PKEY_get_octet_string_param(key.ptr(), OSSL_PKEY_PARAM_ML_DSA_SEED, seed.data(), seed.size(), &seed_len));
OPENSSL_TRY(EVP_PKEY_get_octet_string_param(key.ptr(), OSSL_PKEY_PARAM_PRIV_KEY, priv.data(), priv.size(), &priv_len));
OPENSSL_TRY(EVP_PKEY_get_octet_string_param(key.ptr(), OSSL_PKEY_PARAM_PUB_KEY, pub.data(), pub.size(), &pub_len));
pub.trim(pub_len, true);
priv.trim(priv_len, true);
auto pub = TRY(get_byte_buffer_param_from_key(key, OSSL_PKEY_PARAM_PUB_KEY));
auto priv = TRY(get_byte_buffer_param_from_key(key, OSSL_PKEY_PARAM_PRIV_KEY));
seed = TRY(get_byte_buffer_param_from_key(key, OSSL_PKEY_PARAM_ML_DSA_SEED));
return KeyPairType {
{ pub },